Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Tue, 11 Jun 2013 18:12:16 -0400, you wrote: Someone mentioned there being an RMS conversion as part of the existing PWM to analog conversion methods but don't recall who now, can someone suggest a link for reading that might get me some insight on this? I mentioned the problem was to do with RMS in the pulsed signal, or so I recall in discussions on converting PWM to an analogue voltage. I think it's more to do with the Time constant on RC circuits like the one used on a lot of breakout boards. They do not give a linear response. Short of a look up comparison table I don't think you'll ever get it linear. Near enough should do anyway :) Steve Blackmore -- -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] minimum storage for LinuxCNC on desktop
On 12 June 2013 05:18, Bruce Layne linux...@thinkingdevices.com wrote: My favorite method of installing LinuxCNC is to download the ISO, but instead of burning a CD, I use unetbootin to create a bootable USB flash drive. It is actually even easier than that, as Ubuntu has a buit-in startup-disk creator. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
Can you point us to such a $500 depth sensor?. Thanks, Javier On Wed, Jun 12, 2013 at 4:34 AM, jeremy youngs jcyoung...@gmail.com wrote: why not just probe check the technology is already mature. not tryin to disuade just sayin i mean if you are developing it great please share in the wiki On Tue, Jun 11, 2013 at 9:53 PM, a k pccncmach...@gmail.com wrote: Hi i want to talk about 3d laser scanner. this is new technology that can be add to EMC2 Big picture is to generate intelligent milling machine machine tool. With 3d scanner machine tool can see inspect part that it cutting, analyze make correction and recut, Depth sensor cost around $500 and rest is software. I think that by adding 3d scanner ability to EMC2 possible create new generation 5th generation machine tool. thanks aram -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- We conclude that the Second Amendment protects an individual right to keep and bear arms. That right existed prior to the formation of the new government under the Constitution and was premised on the private use of arms for activities such as hunting and self-defense, the latter being understood as resistance to either private lawlessness or the depredations of a tyrannical government. - U.S. Court of Appeals, D.C. Circuit, March 9, 2007 jeremy youngs -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
--- On Tue, 6/11/13, a k pccncmach...@gmail.com wrote: i want to talk about 3d laser scanner. this is new technology that can be add to EMC2 Big picture is to generate intelligent milling machine machine tool. With 3d scanner machine tool can see inspect part that it cutting, analyze make correction and recut, Look up DAVID laser scanner. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
HI, My 2ct, when I tried 2 years ago to have a reliable 3d scanner for cheap, I tried the line laser option, cost nothing (a laser line is 5$ on ebay, and I recycle a good webcam). My conclusion were that the raw scan need a lot of cleaning before having anything useful for milling. Maybe it improved in the meantime, but it seems to be challenging to have something useful with this technology. Also, the laser will hate having dust in the air ... so for on the fly correction of the tool path ... Cheers, Yves, 2013/6/12 Gregg Eshelman g_ala...@yahoo.com: --- On Tue, 6/11/13, a k pccncmach...@gmail.com wrote: i want to talk about 3d laser scanner. this is new technology that can be add to EMC2 Big picture is to generate intelligent milling machine machine tool. With 3d scanner machine tool can see inspect part that it cutting, analyze make correction and recut, Look up DAVID laser scanner. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] K9 SmorgasBoard for testing LinuxCNC on BeagleBone
On Tue, Jun 11, 2013 at 11:14 PM, Steve Stallings steve...@newsguy.comwrote: Well, cutting it extremely close, but the developer's test bed for using a BeagleBone to run LinuxCNC is hopefully going to be at the fest in Wichita. The PCB is out for fab and we supposedly will get the blank boards Thursday morning. That gives me two days to assemble and test before leaving for Wichita. Dave has been working on firmware, so hopefully we get a chance to actually try some stuff. More details later, but here is a layout image of the PCB to look over: http://www.pmdx.com/k9/k9-image.pdf Cheers, Steve Stallings Crikey! That's a busy little board. Nice looking work Steve. Mark -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Machinekit LinuxCNC-on-BeagleBone Beta Release
On 12 June 2013 06:22, Charles Steinkuehler char...@steinkuehler.net wrote: You need to edit the one in /boot/uboot/, or more specifically, the one in the FAT partition of the SD Card. This was slightly complicated by the SD card being mounted at the time in a Virtual PC running on my Mac. So, /boot isn't the SD card at all. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wednesday 12 June 2013 06:07:19 andy pugh did opine: On 10 June 2013 00:20, Gene Heskett ghesk...@wdtv.com wrote: And this is with Pgain at about 40, but there is a speed instability, an almost random 50 rpm wandering that doesn't go away if I turn off the pwm dither, Any PID tuning for a nonlinear system is likely to be a compromise. The lincurve module is actually modelled on the type of structure we use at work to control nonlinear systems. Typically the P, I and D terms are the output of such a lookup table. (Which is why, rather unusually, that module has IO pins as well as outputs). So, rather than setting up a 12-entry linearisation curve, you could try a 3-entry curve to provide the P-term for your system. Up early, thought I'd play with lincurve.9 using halrun. Unforch, its not part of the 2.5.x sim installed on this machine. :( And with the repo locked... 8:( Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml All men are mortal. Socrates was mortal. Therefore, all men are Socrates. -- Woody Allen A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wednesday 12 June 2013 06:28:33 Steve Blackmore did opine: On Tue, 11 Jun 2013 18:12:16 -0400, you wrote: Someone mentioned there being an RMS conversion as part of the existing PWM to analog conversion methods but don't recall who now, can someone suggest a link for reading that might get me some insight on this? I mentioned the problem was to do with RMS in the pulsed signal, or so I recall in discussions on converting PWM to an analogue voltage. I think it's more to do with the Time constant on RC circuits like the one used on a lot of breakout boards. They do not give a linear response. Short of a look up comparison table I don't think you'll ever get it linear. Near enough should do anyway :) Steve Blackmore Thanks steve. Andy had mentioned lincurve.9 as a possible solution, but the version I save installed on this machine so I can run sims, doesn't have that module available. So I can't play what if using halrun. :( Problem is that I can type s60 thru s360 and pretty much get what was asked. From s400 on up, there is a huge positive curve. I have the tach set to display 1200 max at full scale. Entering s600 (gets about 770 revs, to pinning the tach at 1200 is around an s841 entry, a very large 'gain'. The new motors countershaft has a 3/1 stepdown, plus the gearing in the head, means that at 1200 indicated, the motor is about tapped out, about 6 grand. Thats a hell of a lot of well balanced cast iron flywheel, 6 in diameter, to be spinning that sort of rpms. And I'm looking at a storm headed my way they are saying we'll need to drag out our generators for. I've been trying to get a whole house, 18kw NG fired, but locally all they have is generac, junk. I want a kohler, better warranty, but no registered service people locally. So its not happening. One of the neighbors has a new generac, plenty big enough, but I drove past it during the last outage, and his overhead lights looked like they were running on 85 volts. My little 6kw, clipped onto the open main breaker isn't big enough to run the whole house AC, but the lights (100% ccfl) were fine. I wasn't impressed with the difference. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml A penny saved is a penny taxed. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Upgrade to ATC
2013/6/12 andy pugh bodge...@gmail.com: On 11 June 2013 21:10, Viesturs Lācis viesturs.la...@gmail.com wrote: (I am also wondering if a version of kwik-switch (which has the advantage of being bottom-actuated) could be made where… Is there any chance to see some kind of picture with this suggestion? I don't think it really matters, I wouldn't want to be going in to production. But Kwik-switch is this: http://www.tools-n-gizmos.com/specs/Tapers.html As you can see it looks _slightly_ like an ER collet socket. I saw a really nice ATC as an add-on that fits the common Chinese VFD spindles. It was very nice looking but expensive. /S -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] What is the Wichita meeting?
...and why isn't it promoted at http://linuxcnc.org? Regards, Sven -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On 12 June 2013 12:05, Gene Heskett ghesk...@wdtv.com wrote: Andy had mentioned lincurve.9 as a possible solution, but the version I save installed on this machine so I can run sims, doesn't have that module available. So I can't play what if using halrun. :( There isn't a lot to it, you could paste this: http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=blob;f=src/hal/components/lincurve.comp;h=4335245a14c5aa6a793f5c12bfba84cde40c76b6;hb=HEAD into a file called lincurve.comp and then comp --install it. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
On 12 June 2013 12:17, Sven Wesley svenne.d...@gmail.com wrote: ...and why isn't it promoted at http://linuxcnc.org? It only occurred to me last night that there is no mention of it on the forums at all. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] 3d scanner
In regards to a depth sensor, there's a good change Aram is referring to a Kinect or the Asus Xtion (Pro Live). There's been plenty of hacker-friendly attempts for point-n-shoot capture solutions using these over the years, adding to the laser-line, and distributed-light methods. The Xtion unit retails sub-$250, so it's an expensive experiment, but a contender for entry-level scanning - but it's only part of the hardware side. The DAVID project uses just laser and distributed light methods (at current, IIRC), so not a compatible software piece. There are retail packages that speak with a Kinect or Xtion, my favorite low-cost at the moment is Manctl's Skanect, but I also like the free Faro (tickler), Scenect. There are of course others. Most are Win32 or Win64 offerings only. OpenCV is often used as a framework for open-source attempts, so not all hope is lost if someone wants to try In a commercial environment, I do create and provide difference scans of parts in some cases as required by a client, but it's pretty rare. A big thing to note about volumetric scanning versus probing is that scanning gets you a profile, and it takes a lot of time; probing gets you parametric data and can be extremely fast. To implement an in-process scanning technique effectively, I would have to do it in between machining operations - not just at the end, as one part feature may be dependent upon the next, such as a helical thread inside a drilled then bored hole) - and although most faults like that would cause tool damage, I wouldn't want to write part programs so that each individual feature is a separate operation (that's what automation is supposed to make easier!) - thus the logic decision as to how to fix the problem won't exist. Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against. If you want accuracy, measuring scale on a single volumetric scan is near impossible. You need to have many angles and views stitched together to see past obstructions. Any imperfection in the part, including unintended, is recorded [perfectly]. Furthermore, the scanner is unable to understand chips, swarf or coolant sitting on the part - it will look like a fault in the part and raise an alarm. Get coolant on the lens and your scanning is of no value. Probing, on the other hand, can be more easily automated, and directed towards achieving the stated goal - whether or not a particular feature is within tolerance. I use both laser and depth-based scanning plus probing for a variety of tasks, but only probing on my machines. I would liken volumetric scanning versus probing to the earlier implementation of a webcam (camview by pavel et al, for example, which I really do applaud) for tool-length-setting (and more) versus a touch probe. Although I'm enamored with having a non-contact tool setter, a camera is much less tolerant of mistakes or changes in the environment than a touch probe. When you just want to get parts out, the touch probe JustWorks. That's not to say that having a volumetric scanner as a tool in a machine isn't a possibility or a value, but the historical intent for LCNC not to require a 64bit 8-core watercooled machine with Cray loadbalancing (sic) makes it a difficult challenge to have it integrated with LCNC. My preference would be to have it on a separate machine as a standalone application, but load the sensor as a tool when needed. The benefit is the automation of the motion of the camera (instead of human hand) which in that aspect, would return a much more accurate result. Since the software has to chew on the scanning result, it would actually be dangerous to have this type of interruption (and I guarantee it would be an interruption) to the safety of the LCNC realtime loop. Ted. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
sorry sent before finished , i agree with all of the other statements though On Wed, Jun 12, 2013 at 8:52 AM, jeremy youngs jcyoung...@gmail.com wrote: ted said Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against. If you want accuracy, measuring scale on a single volumetric scan is near impossible. You need to have many angles and views stitched together to see past obstructions. Any imperfection in the part, including unintended, is recorded [perfectly]. not exactly just compare it to an iges file that will never change . or other parametric solid On Wed, Jun 12, 2013 at 8:44 AM, Ted Hyde laser...@gmail.com wrote: In regards to a depth sensor, there's a good change Aram is referring to a Kinect or the Asus Xtion (Pro Live). There's been plenty of hacker-friendly attempts for point-n-shoot capture solutions using these over the years, adding to the laser-line, and distributed-light methods. The Xtion unit retails sub-$250, so it's an expensive experiment, but a contender for entry-level scanning - but it's only part of the hardware side. The DAVID project uses just laser and distributed light methods (at current, IIRC), so not a compatible software piece. There are retail packages that speak with a Kinect or Xtion, my favorite low-cost at the moment is Manctl's Skanect, but I also like the free Faro (tickler), Scenect. There are of course others. Most are Win32 or Win64 offerings only. OpenCV is often used as a framework for open-source attempts, so not all hope is lost if someone wants to try In a commercial environment, I do create and provide difference scans of parts in some cases as required by a client, but it's pretty rare. A big thing to note about volumetric scanning versus probing is that scanning gets you a profile, and it takes a lot of time; probing gets you parametric data and can be extremely fast. To implement an in-process scanning technique effectively, I would have to do it in between machining operations - not just at the end, as one part feature may be dependent upon the next, such as a helical thread inside a drilled then bored hole) - and although most faults like that would cause tool damage, I wouldn't want to write part programs so that each individual feature is a separate operation (that's what automation is supposed to make easier!) - thus the logic decision as to how to fix the problem won't exist. Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against. If you want accuracy, measuring scale on a single volumetric scan is near impossible. You need to have many angles and views stitched together to see past obstructions. Any imperfection in the part, including unintended, is recorded [perfectly]. Furthermore, the scanner is unable to understand chips, swarf or coolant sitting on the part - it will look like a fault in the part and raise an alarm. Get coolant on the lens and your scanning is of no value. Probing, on the other hand, can be more easily automated, and directed towards achieving the stated goal - whether or not a particular feature is within tolerance. I use both laser and depth-based scanning plus probing for a variety of tasks, but only probing on my machines. I would liken volumetric scanning versus probing to the earlier implementation of a webcam (camview by pavel et al, for example, which I really do applaud) for tool-length-setting (and more) versus a touch probe. Although I'm enamored with having a non-contact tool setter, a camera is much less tolerant of mistakes or changes in the environment than a touch probe. When you just want to get parts out, the touch probe JustWorks. That's not to say that having a volumetric scanner as a tool in a machine isn't a possibility or a value, but the historical intent for LCNC not to require a 64bit 8-core watercooled machine with Cray loadbalancing (sic) makes it a difficult challenge to have it integrated with LCNC. My preference would be to have it on a separate machine as a standalone application, but load the sensor as a tool when needed. The benefit is the automation of the motion of the camera (instead of human hand) which in that aspect, would return a much more accurate result. Since the software has to chew on the scanning result, it would actually be dangerous to have this type of interruption (and I guarantee it would be an interruption) to the safety of the LCNC realtime loop. Ted. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- We conclude that the Second
Re: [Emc-users] 3d scanner
ted said Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against. If you want accuracy, measuring scale on a single volumetric scan is near impossible. You need to have many angles and views stitched together to see past obstructions. Any imperfection in the part, including unintended, is recorded [perfectly]. not exactly just compare it to an iges file that will never change . or other parametric solid On Wed, Jun 12, 2013 at 8:44 AM, Ted Hyde laser...@gmail.com wrote: In regards to a depth sensor, there's a good change Aram is referring to a Kinect or the Asus Xtion (Pro Live). There's been plenty of hacker-friendly attempts for point-n-shoot capture solutions using these over the years, adding to the laser-line, and distributed-light methods. The Xtion unit retails sub-$250, so it's an expensive experiment, but a contender for entry-level scanning - but it's only part of the hardware side. The DAVID project uses just laser and distributed light methods (at current, IIRC), so not a compatible software piece. There are retail packages that speak with a Kinect or Xtion, my favorite low-cost at the moment is Manctl's Skanect, but I also like the free Faro (tickler), Scenect. There are of course others. Most are Win32 or Win64 offerings only. OpenCV is often used as a framework for open-source attempts, so not all hope is lost if someone wants to try In a commercial environment, I do create and provide difference scans of parts in some cases as required by a client, but it's pretty rare. A big thing to note about volumetric scanning versus probing is that scanning gets you a profile, and it takes a lot of time; probing gets you parametric data and can be extremely fast. To implement an in-process scanning technique effectively, I would have to do it in between machining operations - not just at the end, as one part feature may be dependent upon the next, such as a helical thread inside a drilled then bored hole) - and although most faults like that would cause tool damage, I wouldn't want to write part programs so that each individual feature is a separate operation (that's what automation is supposed to make easier!) - thus the logic decision as to how to fix the problem won't exist. Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against. If you want accuracy, measuring scale on a single volumetric scan is near impossible. You need to have many angles and views stitched together to see past obstructions. Any imperfection in the part, including unintended, is recorded [perfectly]. Furthermore, the scanner is unable to understand chips, swarf or coolant sitting on the part - it will look like a fault in the part and raise an alarm. Get coolant on the lens and your scanning is of no value. Probing, on the other hand, can be more easily automated, and directed towards achieving the stated goal - whether or not a particular feature is within tolerance. I use both laser and depth-based scanning plus probing for a variety of tasks, but only probing on my machines. I would liken volumetric scanning versus probing to the earlier implementation of a webcam (camview by pavel et al, for example, which I really do applaud) for tool-length-setting (and more) versus a touch probe. Although I'm enamored with having a non-contact tool setter, a camera is much less tolerant of mistakes or changes in the environment than a touch probe. When you just want to get parts out, the touch probe JustWorks. That's not to say that having a volumetric scanner as a tool in a machine isn't a possibility or a value, but the historical intent for LCNC not to require a 64bit 8-core watercooled machine with Cray loadbalancing (sic) makes it a difficult challenge to have it integrated with LCNC. My preference would be to have it on a separate machine as a standalone application, but load the sensor as a tool when needed. The benefit is the automation of the motion of the camera (instead of human hand) which in that aspect, would return a much more accurate result. Since the software has to chew on the scanning result, it would actually be dangerous to have this type of interruption (and I guarantee it would be an interruption) to the safety of the LCNC realtime loop. Ted. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- We conclude that the Second Amendment protects an individual right to keep and bear arms. That right existed prior to the formation of the new government under the Constitution and was premised on
Re: [Emc-users] LinuxCNC Integrator meeting Germany?
Hi people. I'm from Northern Italy and I would be happy to participate to a meeting in southern Germany (Munich or Landshut that for me is about 500/600km ). Of course during the weekend time. :-) Alex On Tue, Jun 11, 2013 at 12:33 PM, Maximilian H mhemc2nos...@googlemail.comwrote: Hello Everybody, southern Germany sounds great to me ;) (Especially since I am living close to Stuttgart). So I'd love to come. BR Max. Hello all. Is there a LinuxCNC integrator workshop planned in/around Germany within the next year or so? If not - are there people interested in attending/getting an integrator meeting up? I will probably finish the 6-axis Manutechttp://www.youtube.com/watch?v=wslOMT6_e6k at work somewhen this year and feel confident enough to help others out (well I have to read up on all my notes again first ;-). Btw. I'm located in Stuttgart, Germany if someone else is close by. Cheers, Christian -- How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wed, 12 Jun 2013, Gene Heskett wrote: Date: Wed, 12 Jun 2013 07:05:56 -0400 From: Gene Heskett ghesk...@wdtv.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] looking for a non-linearity in spindle speed control. On Wednesday 12 June 2013 06:28:33 Steve Blackmore did opine: On Tue, 11 Jun 2013 18:12:16 -0400, you wrote: Someone mentioned there being an RMS conversion as part of the existing PWM to analog conversion methods but don't recall who now, can someone suggest a link for reading that might get me some insight on this? I mentioned the problem was to do with RMS in the pulsed signal, or so I recall in discussions on converting PWM to an analogue voltage. I think it's more to do with the Time constant on RC circuits like the one used on a lot of breakout boards. They do not give a linear response. Short of a look up comparison table I don't think you'll ever get it linear. Near enough should do anyway :) Steve Blackmore Thanks steve. Andy had mentioned lincurve.9 as a possible solution, but the version I save installed on this machine so I can run sims, doesn't have that module available. So I can't play what if using halrun. :( Problem is that I can type s60 thru s360 and pretty much get what was asked. From s400 on up, there is a huge positive curve. I have the tach set to display 1200 max at full scale. Entering s600 (gets about 770 revs, to pinning the tach at 1200 is around an s841 entry, a very large 'gain'. The new motors countershaft has a 3/1 stepdown, plus the gearing in the head, means that at 1200 indicated, the motor is about tapped out, about 6 grand. Thats a hell of a lot of well balanced cast iron flywheel, 6 in diameter, to be spinning that sort of rpms. And I'm looking at a storm headed my way they are saying we'll need to drag out our generators for. I've been trying to get a whole house, 18kw NG fired, but locally all they have is generac, junk. I want a kohler, better warranty, but no registered service people locally. So its not happening. One of the neighbors has a new generac, plenty big enough, but I drove past it during the last outage, and his overhead lights looked like they were running on 85 volts. My little 6kw, clipped onto the open main breaker isn't big enough to run the whole house AC, but the lights (100% ccfl) were fine. I wasn't impressed with the difference. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml A penny saved is a penny taxed. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Getting a highly linear analog output vs duty cycle from a PWM source is trivial, it requires: 1. Equal high and low drive impedance from PWM source to the RC filter (hint: swamp output impedance of PWM source with resistor) 2. Minimal delays (pulse width distortion) in the PWM signal 3. Buffering the RC filter from load Peter Wallace Mesa Electronics -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
this is what we need to be working toward :) http://www.faro.com/en-us/products/metrology/measuring-arm-faro-scanarm/overview On Wed, Jun 12, 2013 at 7:53 AM, jeremy youngs jcyoung...@gmail.com wrote: sorry sent before finished , i agree with all of the other statements though On Wed, Jun 12, 2013 at 8:52 AM, jeremy youngs jcyoung...@gmail.com wrote: ted said Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against. If you want accuracy, measuring scale on a single volumetric scan is near impossible. You need to have many angles and views stitched together to see past obstructions. Any imperfection in the part, including unintended, is recorded [perfectly]. not exactly just compare it to an iges file that will never change . or other parametric solid On Wed, Jun 12, 2013 at 8:44 AM, Ted Hyde laser...@gmail.com wrote: In regards to a depth sensor, there's a good change Aram is referring to a Kinect or the Asus Xtion (Pro Live). There's been plenty of hacker-friendly attempts for point-n-shoot capture solutions using these over the years, adding to the laser-line, and distributed-light methods. The Xtion unit retails sub-$250, so it's an expensive experiment, but a contender for entry-level scanning - but it's only part of the hardware side. The DAVID project uses just laser and distributed light methods (at current, IIRC), so not a compatible software piece. There are retail packages that speak with a Kinect or Xtion, my favorite low-cost at the moment is Manctl's Skanect, but I also like the free Faro (tickler), Scenect. There are of course others. Most are Win32 or Win64 offerings only. OpenCV is often used as a framework for open-source attempts, so not all hope is lost if someone wants to try In a commercial environment, I do create and provide difference scans of parts in some cases as required by a client, but it's pretty rare. A big thing to note about volumetric scanning versus probing is that scanning gets you a profile, and it takes a lot of time; probing gets you parametric data and can be extremely fast. To implement an in-process scanning technique effectively, I would have to do it in between machining operations - not just at the end, as one part feature may be dependent upon the next, such as a helical thread inside a drilled then bored hole) - and although most faults like that would cause tool damage, I wouldn't want to write part programs so that each individual feature is a separate operation (that's what automation is supposed to make easier!) - thus the logic decision as to how to fix the problem won't exist. Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against. If you want accuracy, measuring scale on a single volumetric scan is near impossible. You need to have many angles and views stitched together to see past obstructions. Any imperfection in the part, including unintended, is recorded [perfectly]. Furthermore, the scanner is unable to understand chips, swarf or coolant sitting on the part - it will look like a fault in the part and raise an alarm. Get coolant on the lens and your scanning is of no value. Probing, on the other hand, can be more easily automated, and directed towards achieving the stated goal - whether or not a particular feature is within tolerance. I use both laser and depth-based scanning plus probing for a variety of tasks, but only probing on my machines. I would liken volumetric scanning versus probing to the earlier implementation of a webcam (camview by pavel et al, for example, which I really do applaud) for tool-length-setting (and more) versus a touch probe. Although I'm enamored with having a non-contact tool setter, a camera is much less tolerant of mistakes or changes in the environment than a touch probe. When you just want to get parts out, the touch probe JustWorks. That's not to say that having a volumetric scanner as a tool in a machine isn't a possibility or a value, but the historical intent for LCNC not to require a 64bit 8-core watercooled machine with Cray loadbalancing (sic) makes it a difficult challenge to have it integrated with LCNC. My preference would be to have it on a separate machine as a standalone application, but load the sensor as a tool when needed. The benefit is the automation of the motion of the camera (instead of human hand) which in that aspect, would return a much more accurate result. Since the software has to chew on the scanning result, it would actually be dangerous to have this type of interruption (and I guarantee it would be an interruption) to the safety of the LCNC realtime loop. Ted. -- This
Re: [Emc-users] 3d scanner
-Original Message- From: Stuart Stevenson [mailto:stus...@gmail.com] Sent: Wednesday, June 12, 2013 9:05 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] 3d scanner this is what we need to be working toward :) http://www.faro.com/en-us/products/metrology/measuring-arm-far o-scanarm/overview Regardless of how well it works, or how much it costs that is one wicked looking tool! -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] minimum storage for LinuxCNC on desktop
a while back I put the livecd on a usb stick since I don't know if I have any working cdrom drives. I carry around a usb drive with a number of linux distros on it for diagnostic purposes On Wed, Jun 12, 2013 at 3:55 AM, andy pugh bodge...@gmail.com wrote: On 12 June 2013 05:18, Bruce Layne linux...@thinkingdevices.com wrote: My favorite method of installing LinuxCNC is to download the ISO, but instead of burning a CD, I use unetbootin to create a bootable USB flash drive. It is actually even easier than that, as Ubuntu has a buit-in startup-disk creator. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
On Wed, 12 Jun 2013 13:17:05 +0200 Sven Wesley svenne.d...@gmail.com wrote: ...and why isn't it promoted at http://linuxcnc.org? Mostly because we're a bunch of knuckleheads. Is this you? https://www.facebook.com/sven.wesley I ask because if it is, you probably don't live in the US (if you're wondering, it was the diacritical marks that gave you away). Anyway, Wichita, Kansas is where Stuart Stevenson has his airplane parts making shop. Every once in a while he (and Roland Friestad in Galesburg, Illinois before him) has a get together of the linuxcnc developers. It's hard to recommend that someone attend these meetings unless they are a hard core linuxcnc enthusiast. If you've never been to one, whatever you imagine these meetings to be like is probably wrong. Let's just say they are a rather singular experience, kind of like Burning Man but a lot smaller and without girls. Anyway, if I have the right Sven Wesley, you seem to be one of those X-Games/Extreme Sports guys so I can't rule out the possibility that you might own an airplane. If so, and you decide to show up, call me on my cell at (443)789-4628 and I'll get you picked up from the airport (ICT). If you come, I'll buy you a steak dinner (apologies if you're vegan). Thanks, Matt -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Machinekit LinuxCNC-on-BeagleBone Beta Release
Am 12.06.2013 um 12:08 schrieb andy pugh bodge...@gmail.com: On 12 June 2013 06:22, Charles Steinkuehler char...@steinkuehler.net wrote: You need to edit the one in /boot/uboot/, or more specifically, the one in the FAT partition of the SD Card. This was slightly complicated by the SD card being mounted at the time in a Virtual PC running on my Mac. So, /boot isn't the SD card at all. I have wasted too much time trying to get the Mac SD card reader in a MBP to work with Virtualbox, or sensibly from the OSX shell layer for these purposes. I have dusted off a Acer Revo which I now use as linux-driven card driver, and that works. - Michael -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Machinekit LinuxCNC-on-BeagleBone Beta Release
On 12 June 2013 15:33, Michael Haberler mai...@mah.priv.at wrote: I have wasted too much time trying to get the Mac SD card reader in a MBP to work with Virtualbox, or sensibly from the OSX shell layer for these purposes. It _appears_ to work entirely as one would expect in VMWare Fusion. Certainly making an SD card with mungkie's RPi image was no problem at all. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
On 12 June 2013 13:52, jeremy youngs jcyoung...@gmail.com wrote: not exactly just compare it to an iges file that will never change . or other parametric solid Going from a point-cloud to a parametric solid is not even slightly easy. However, in this case I guess that you could create a virtual point-cloud from the IGES file for point-by-point comparison. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Just our first retroffiting with linuxCNC
Hello, This is a video of our first machine working with linuxCNC. It is in a platform shoes factory in Spain. http://youtu.be/ehIIegO4gHQ Regards, Luis Bellot -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Unimat CNC Lathe demo'd last night.
I took the little CNC Unimat lathe out to the meeting of the OVAR (Ottawa, Canada) informal railway modellers group last night. There's usually about 125 people that show up. The CNC lathe was just running a turning program, no spindle going, (no swarf to throw around over other exhibits). Interesting the comments; did not matter the age of the questioner; some good interest. Of course, many of the attendees did not really comment; these people come from all walks of life, and I'm sure many of them have never seen a lathe in operation (but are most likely better HO scale modellers than I could ever be - everyone has their own strengths) Was looking for another Unimat headstock to put a stepper motor on, so I can go quickly from splashing brass at 5,000 rpm to cutting cams at 1 rpm. We'll see what the grapevine turns up. Here's my blog, I'll probably update it this coming weekend again: http://cnc-for-model-engineers.blogspot.com John A. Stewart. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wednesday 12 June 2013 11:01:33 andy pugh did opine: On 12 June 2013 12:05, Gene Heskett ghesk...@wdtv.com wrote: Andy had mentioned lincurve.9 as a possible solution, but the version I save installed on this machine so I can run sims, doesn't have that module available. So I can't play what if using halrun. :( There isn't a lot to it, you could paste this: http://git.linuxcnc.org/gitweb?p=linuxcnc.git;a=blob;f=src/hal/component s/lincurve.comp;h=4335245a14c5aa6a793f5c12bfba84cde40c76b6;hb=HEAD into a file called lincurve.comp and then comp --install it. I must have a broken install here, I copy/pasted it from the ff screen into gedit, saved it then: gene@coyote:~/linuxcnc$ comp --install lincurve.comp The program 'comp' can be found in the following packages: * mailutils-mh * nmh Try: sudo apt-get install selected package gene@coyote:~/linuxcnc$ halrun halcmd: comp --install lincurve.comp stdin:1: parameter or pin 'comp' not found halcmd: exit Do I need to add to my $PATH? Currently /opt/toolshed/bin:/opt/eagle/bin:/home/gene/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games Thanks Andy. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml Being Ymor's right-hand man was like being gently flogged to death with scented bootlaces. -- Terry Pratchett, The Colour of Magic A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
I'm interested in whether you could use a leap for this. https://leapmotion.com/product I am still trying to get ahold of one :-) DougM On Wed, Jun 12, 2013 at 1:42 AM, Watier Yves w...@tieryves.com wrote: HI, My 2ct, when I tried 2 years ago to have a reliable 3d scanner for cheap, I tried the line laser option, cost nothing (a laser line is 5$ on ebay, and I recycle a good webcam). My conclusion were that the raw scan need a lot of cleaning before having anything useful for milling. Maybe it improved in the meantime, but it seems to be challenging to have something useful with this technology. Also, the laser will hate having dust in the air ... so for on the fly correction of the tool path ... Cheers, Yves, 2013/6/12 Gregg Eshelman g_ala...@yahoo.com: --- On Tue, 6/11/13, a k pccncmach...@gmail.com wrote: i want to talk about 3d laser scanner. this is new technology that can be add to EMC2 Big picture is to generate intelligent milling machine machine tool. With 3d scanner machine tool can see inspect part that it cutting, analyze make correction and recut, Look up DAVID laser scanner. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
On 6/12/2013 9:41 AM, Matt Shaver wrote: On Wed, 12 Jun 2013 13:17:05 +0200 Sven Wesley svenne.d...@gmail.com wrote: ...and why isn't it promoted at http://linuxcnc.org? Mostly because we're a bunch of knuckleheads. Is this you? https://www.facebook.com/sven.wesley I ask because if it is, you probably don't live in the US (if you're wondering, it was the diacritical marks that gave you away). Anyway, Wichita, Kansas is where Stuart Stevenson has his airplane parts making shop. Every once in a while he (and Roland Friestad in Galesburg, Illinois before him) has a get together of the linuxcnc developers. It's hard to recommend that someone attend these meetings unless they are a hard core linuxcnc enthusiast. If you've never been to one, whatever you imagine these meetings to be like is probably wrong. Let's just say they are a rather singular experience, kind of like Burning Man but a lot smaller and without girls. Anyway, if I have the right Sven Wesley, you seem to be one of those X-Games/Extreme Sports guys so I can't rule out the possibility that you might own an airplane. If so, and you decide to show up, call me on my cell at (443)789-4628 and I'll get you picked up from the airport (ICT). If you come, I'll buy you a steak dinner (apologies if you're vegan). If you are vegan, I'll buy you a carrot. :-) Ken Thanks, Matt -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] LinuxCNC Integrator meeting Germany?
Hello, I am also from the near of stuttgart (south of stuttgart, near Tübingen) - so that location would be very fine for me - well, I hope there will be enough free chairs! Has anyone an idea for a good location in stuttgart for many people - I think there will be a lot of guys ;-) Jan Maier Hi people. I'm from Northern Italy and I would be happy to participate to a meeting in southern Germany (Munich or Landshut that for me is about 500/600km ). Of course during the weekend time. :-) Alex On Tue, Jun 11, 2013 at 12:33 PM, Maximilian H mhemc2nos...@googlemail.comwrote: Hello Everybody, southern Germany sounds great to me ;) (Especially since I am living close to Stuttgart). So I'd love to come. BR Max. Hello all. Is there a LinuxCNC integrator workshop planned in/around Germany within the next year or so? If not - are there people interested in attending/getting an integrator meeting up? I will probably finish the 6-axis Manutechttp://www.youtube.com/watch?v=wslOMT6_e6k at work somewhen this year and feel confident enough to help others out (well I have to read up on all my notes again first ;-). Btw. I'm located in Stuttgart, Germany if someone else is close by. Cheers, Christian -- How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On 12 June 2013 16:05, Gene Heskett ghesk...@wdtv.com wrote: I must have a broken install here, You need linuxcnc-dev (I don't actually know why comp isn't installed as standard, I don't think it is enormous) http://www.linuxcnc.org/docs/html/hal/comp.html Section 2 -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Unimat CNC Lathe demo'd last night.
On 12 June 2013 15:54, John Alexander Stewart ivatt...@gmail.com wrote: Was looking for another Unimat headstock to put a stepper motor on, so I can go quickly from splashing brass at 5,000 rpm to cutting cams at 1 rpm. We'll see what the grapevine turns up. Sounds like a job for a small servo motor, then it can do both. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wednesday 12 June 2013 11:07:52 Peter C. Wallace did opine: On Wed, 12 Jun 2013, Gene Heskett wrote: Date: Wed, 12 Jun 2013 07:05:56 -0400 From: Gene Heskett ghesk...@wdtv.com Reply-To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] looking for a non-linearity in spindle speed control. On Wednesday 12 June 2013 06:28:33 Steve Blackmore did opine: On Tue, 11 Jun 2013 18:12:16 -0400, you wrote: Someone mentioned there being an RMS conversion as part of the existing PWM to analog conversion methods but don't recall who now, can someone suggest a link for reading that might get me some insight on this? I mentioned the problem was to do with RMS in the pulsed signal, or so I recall in discussions on converting PWM to an analogue voltage. I think it's more to do with the Time constant on RC circuits like the one used on a lot of breakout boards. They do not give a linear response. Short of a look up comparison table I don't think you'll ever get it linear. Near enough should do anyway :) Steve Blackmore Thanks steve. Andy had mentioned lincurve.9 as a possible solution, but the version I save installed on this machine so I can run sims, doesn't have that module available. So I can't play what if using halrun. :( Problem is that I can type s60 thru s360 and pretty much get what was asked. From s400 on up, there is a huge positive curve. I have the tach set to display 1200 max at full scale. Entering s600 (gets about 770 revs, to pinning the tach at 1200 is around an s841 entry, a very large 'gain'. The new motors countershaft has a 3/1 stepdown, plus the gearing in the head, means that at 1200 indicated, the motor is about tapped out, about 6 grand. Thats a hell of a lot of well balanced cast iron flywheel, 6 in diameter, to be spinning that sort of rpms. And I'm looking at a storm headed my way they are saying we'll need to drag out our generators for. I've been trying to get a whole house, 18kw NG fired, but locally all they have is generac, junk. I want a kohler, better warranty, but no registered service people locally. So its not happening. One of the neighbors has a new generac, plenty big enough, but I drove past it during the last outage, and his overhead lights looked like they were running on 85 volts. My little 6kw, clipped onto the open main breaker isn't big enough to run the whole house AC, but the lights (100% ccfl) were fine. I wasn't impressed with the difference. Cheers, Gene -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users Getting a highly linear analog output vs duty cycle from a PWM source is trivial, it requires: 1. Equal high and low drive impedance from PWM source to the RC filter (hint: swamp output impedance of PWM source with resistor) Much easier said than done where dealing with one of Arturo's products. He does not supply schematics, and I have only reverse drawn perhaps 10% of the C41. I get the impression there is more layers than what can be seen to his boards. Its for sure that the opto device is an on-off only device, needing the help of an 74LS240 buffer chip that is now an 74HCT240, and which we both know does not have equal src and sink abilities even in our wildest dreams. 2. Minimal delays (pulse width distortion) in the PWM signal Thats good here. Rise fall times are well under 100ns when looked at by my 100mhz dual trace. 3. Buffering the RC filter from load On that point, I'd need to trace the output stage again, but I think the load is hanging directly across an LM358, which is ATM buffering the filtering capacitor with a gain of about 1.25 that I installed in order to get closer to the plus rail. As I switched its 12 volts up to 15.5, those two resistors could likely be removed. IOW it sure looks buffered by the LM358. Another item I found while dickin around with the OEM 250 watt controller, was that its pot arm input _was_ the summing junction, and that a 10k resistor in series with the 'arm of the pot input connection made an amazing difference in the linearity of the control, and did it with an un- measurable amount of voltage drop, un-measurable to a 10 meg input digital meter. And its something I have not tried here yet with this much bigger controller, and probably should. The effect I am seeing certainly walks like a brother to that particular duck. That would be a relatively easy item to restore amidst the stuff I have pasted on the bottom of that board now to make that gain of
[Emc-users] Should I or Shouldn't I?
I accidentally bought another lathe from eBay. It is beautifully made, in the 1920s, with no regard to cost practicality or logic. One of these: http://www.lathes.co.uk/rivett/page2.html It isn't quite as nice as the one in the pictures, and has no changewheels or screwcutting box. (imagine is stops short at the back of the headstock). Should I CNC it? If I do, I would have to do it sympathetically. (My other hobby is vehicles from the same era). As the entire cross-slide pops off at the flick of a lever, it is not difficult to imagine a slot-on CNC cross-slide, possibly incorporating a tool turret. In this respect the conversion is easier than the Chinese lathe I converted. However, the Z-axis poses something of a quandry. There is no way at all to swap the leadscrew to a ballscrew. It sits snugly in a semicircular slot in the bed. So, perhaps I could mount a ballscrew on a bracket at the back. Then I could slot-on the CNC top-slide and bolt it to the nut, and if I wanted to use the lathe in manual mode I could unbolt it, swap back to the manual toolslide, and resort to craftsmanship. Or, I could just convert it to an electric leadscrew with an Arduino and sell it on as a working lathe. I do think it needs to be mounted on an oak cabinet like the original Rivett ones. I think that looks great :-) (Then flat-belt drive to a motor/vfd mounted underneath) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
On 12 June 2013 16:10, Kenneth Lerman kenneth.ler...@se-ltd.com wrote: If you are vegan, I'll buy you a carrot. :-) I'll take you up on the carrot if it is a generic offer. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wednesday 12 June 2013 11:44:39 andy pugh did opine: On 12 June 2013 16:05, Gene Heskett ghesk...@wdtv.com wrote: I must have a broken install here, You need linuxcnc-dev (I don't actually know why comp isn't installed as standard, I don't think it is enormous) http://www.linuxcnc.org/docs/html/hal/comp.html Section 2 Got it Andy thanks for the quick reply, but if I don't get at this yard, I'll be making pea soup without the peas before this day is over. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml Abraham Lincoln didn't die in vain. He died in Washington, D.C. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Unimat CNC Lathe demo'd last night.
Andy; On Wed, Jun 12, 2013 at 11:22 AM, andy pugh bodge...@gmail.com wrote: Sounds like a job for a small servo motor, then it can do both. Maybe my focus is too narrow, but I have the steppers and controllers from another project, and the spindle comes out of the headstock s easily... For demoing to the unwashed masses, I thought that having a 2nd spindle with and, out comes the original and in goes this one and voila - look what we can do here! I've applied for a table at the Ottawa (Canada) Maker Faire this coming Aug31/Sep1 weekend; want to show what is both easy and possible - maybe two conflicting goals? John A. Stewart. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
Andy; On Wed, Jun 12, 2013 at 10:50 AM, andy pugh bodge...@gmail.com wrote: Going from a point-cloud to a parametric solid is not even slightly easy. It's not that hard. In my Android App (for instance) I take STL vertices, group them, then recreate triangles; it makes rendering much faster, and lighting/texturing much better. John Alexander Stewart (if you are incredibly interested, search Google Play for my name - I'm not going to advertise here!) -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Just our first retroffiting with linuxCNC
On 6/12/13 08:22 , Luis Bellot wrote: Hello, This is a video of our first machine working with linuxCNC. It is in a platform shoes factory in Spain. http://youtu.be/ehIIegO4gHQ Hi Luis, that's very cool! I love seeing people use LinuxCNC in production environments. Do you have a picture of the finished shoe? The video description said you're using a modified version of LinuxCNC, just out of curiosity what changes did you make? -- Sebastian Kuzminsky -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On Wed, 12 Jun 2013 16:35:55 +0100 andy pugh bodge...@gmail.com wrote: Should I CNC it? By asking this question the way you did, it's obvious that you understand the problem. That said, you may not be able to achieve the very high level of tastefulness de rigueur in a project like this. It's not just you; there might not be anyone who could pull that off. All I can say is that I am already haunted by the ghosts of classic hardware that I screwed up when I was young and stupid. Think carefully before you add another skeleton to your closets. Good Luck, Matt -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On Wed, 12 Jun 2013 16:35:55 +0100 andy pugh bodge...@gmail.com wrote: Should I CNC it? It's a neat old machine, but it's not the Mona Lisa. Converting it to CNC is not some sort of crime against humanity. Follow your own sensibilities and I'm sure you'll do just fine. I think it's great that people respect old machines and want to preserve them. However, I also believe in property rights. You bought it, so it's yours. If you want to bolt some motors to it and connect it to a computer and make it do tricks the manufacturers would have never imagined, then go for it. Don't let anyone tell you that you may have bought it but you have no right to modify it and you must restore it to its original condition or you're some sort of vandal. If they want to preserve that machine, THEY should buy it and spent their money to restore it and put it in their vintage machine museum. This topic reminds me of the local historical trust. They get the local government to pass ordinances and zoning restrictions telling people who own old houses what color they're allowed to paint them, what restoration they must do and what improvements they can't make to their property, which contractors are authorized to do historical restoration, etc. They don't own the property, but they are somehow entitled to make every significant decision concerning the property. I'm stripping a lot of parts off a neat old Clausing lathe that I don't need after I convert it to CNC - cross slide, lead screws, all the complex hardware associated with threading, reversing drum switch, etc. I'll eBay that stuff for anyone who wants to restore their old Clausing lathe. As C3PO said, if any of my parts could be of use, I'll gladly donate them. I was probably a Mongol or Visigoth in a previous life. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
Hi Andy; I have a pedal powered lathe built in 1909. It was converted to electric motor power in 1965. I use it for quick one of a kind job, a lot quicker than programing the CNC Lathe. Just a thought. Don On Wed, Jun 12, 2013 at 12:01 PM, Matt Shaver m...@mattshaver.com wrote: On Wed, 12 Jun 2013 16:35:55 +0100 andy pugh bodge...@gmail.com wrote: Should I CNC it? By asking this question the way you did, it's obvious that you understand the problem. That said, you may not be able to achieve the very high level of tastefulness de rigueur in a project like this. It's not just you; there might not be anyone who could pull that off. All I can say is that I am already haunted by the ghosts of classic hardware that I screwed up when I was young and stupid. Think carefully before you add another skeleton to your closets. Good Luck, Matt -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
We have a monarch 10EE that is going to be converted to cnc... Some people cringe at that. I don't.. sam On 6/12/2013 12:05 PM, Bruce Layne wrote: On Wed, 12 Jun 2013 16:35:55 +0100 andy pugh bodge...@gmail.com wrote: Should I CNC it? It's a neat old machine, but it's not the Mona Lisa. Converting it to CNC is not some sort of crime against humanity. Follow your own sensibilities and I'm sure you'll do just fine. I think it's great that people respect old machines and want to preserve them. However, I also believe in property rights. You bought it, so it's yours. If you want to bolt some motors to it and connect it to a computer and make it do tricks the manufacturers would have never imagined, then go for it. Don't let anyone tell you that you may have bought it but you have no right to modify it and you must restore it to its original condition or you're some sort of vandal. If they want to preserve that machine, THEY should buy it and spent their money to restore it and put it in their vintage machine museum. This topic reminds me of the local historical trust. They get the local government to pass ordinances and zoning restrictions telling people who own old houses what color they're allowed to paint them, what restoration they must do and what improvements they can't make to their property, which contractors are authorized to do historical restoration, etc. They don't own the property, but they are somehow entitled to make every significant decision concerning the property. I'm stripping a lot of parts off a neat old Clausing lathe that I don't need after I convert it to CNC - cross slide, lead screws, all the complex hardware associated with threading, reversing drum switch, etc. I'll eBay that stuff for anyone who wants to restore their old Clausing lathe. As C3PO said, if any of my parts could be of use, I'll gladly donate them. I was probably a Mongol or Visigoth in a previous life. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
Bruce; On Wed, Jun 12, 2013 at 1:05 PM, Bruce Layne linux...@thinkingdevices.comwrote: I think it's great that people respect old machines and want to preserve them. However, I also believe in property rights. You bought it, so it's yours. ... I'm of Scottish descent. Should I sell one of my lathes, and I can get more for it as a manual lathe, then the CNC stuff is coming off, the handles going on, and EBay gets the CNC parts, and my bank account gets an added boost ;-) (I actually have an old Wade CAV lathe; round bed, aluminium castings, that might make a neat CNC conversion. It's sitting in my workshop right now... have to see if I can get the cross slide adjusted better; if not, it's getting passed along the food chain) John A. Stewart. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Should I or Shouldn't I?
On 12 June 2013 17:35, andy pugh bodge...@gmail.com wrote: I accidentally bought another lathe from eBay. It is beautifully made, in the 1920s, with no regard to cost practicality or logic. One of these: http://www.lathes.co.uk/rivett/page2.html It isn't quite as nice as the one in the pictures, and has no changewheels or screwcutting box. (imagine is stops short at the back of the headstock). Should I CNC it? If I do, I would have to do it sympathetically. (My other hobby is vehicles from the same era). As the entire cross-slide pops off at the flick of a lever, it is not difficult to imagine a slot-on CNC cross-slide, possibly incorporating a tool turret. In this respect the conversion is easier than the Chinese lathe I converted. However, the Z-axis poses something of a quandry. There is no way at all to swap the leadscrew to a ballscrew. It sits snugly in a semicircular slot in the bed. So, perhaps I could mount a ballscrew on a bracket at the back. Then I could slot-on the CNC top-slide and bolt it to the nut, and if I wanted to use the lathe in manual mode I could unbolt it, swap back to the manual toolslide, and resort to craftsmanship. Or, I could just convert it to an electric leadscrew with an Arduino and sell it on as a working lathe. I do think it needs to be mounted on an oak cabinet like the original Rivett ones. I think that looks great :-) (Then flat-belt drive to a motor/vfd mounted underneath) If it's a piece of iron to you, then hack away. If you see value in it's authenticity, then why not fix it up and re-sell it, and put the money towards a more 'appropriate' machine. (presumably more recent) I have a similar dilemma, but with a mint condition Myford 7 that was my fathers'. I haven't switched it on for 3 years because it's a pain to use, but why CNC it and butcher it when I have a CNC lathe already??? Regards Roland Regards Roland -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
andy pugh wrote: On 12 June 2013 16:10, Kenneth Lerman kenneth.ler...@se-ltd.com wrote: If you are vegan, I'll buy you a carrot. :-) I'll take you up on the carrot if it is a generic offer. There's an Indian place in Wichita that is VEY good! They had a lentil soup there that I'd love to get the recipe for. I think both Jeff and Chris Radek (have to specify last name there, we have a couple Chris's) are both vegan, so you will be in good company. Jon -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
I am in the process of converting a Monarch 10EE to cnc. It was a gift so no expense up front. If it hadn't been a gift I would not have paid much or anything for it because it was shipped from Monarch as a Basic Model in 1953. As a Basic model it is pretty much a second op machine but a really nice one at that. There is no threading capability and no taper attachment. Modifying the machine to bring it a toolroom model would require thousands of dollars in parts and some serious line boring capability. Not even remotely feasible. Probably the most used function of my smaller CNC lathe is threading strange or exotic threads. The fact that the 10EE has NO threading capability at all (no lead screw and no thread gearing) makes it marginally useful to me. However with Minor mods to the machine such as a few extra tapped holes in the casting and a pinned coupling on the exposed backside of the cross feed screw and an encoder disk on the spindle it will be a CNC lathe to die for. When I have finished the lathe will be fully functional in the manual mode using the manual controls and only be operated in CNC mode when required. The ball screws, nuts and servos will come from my spares and I'm guessing that it will cost me less that $400 out of pocket for bearings belts and pulleys. I can't imagine not doing it. If however. the machine had been a pristine tool room model I might have to think twice before converting it. Even I have a tiny little smidgen of respect for nostalgia. Cecil -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On Wed, 2013-06-12 at 19:28 +0200, Roland Jollivet wrote: On 12 June 2013 17:35, andy pugh bodge...@gmail.com wrote: I accidentally bought another lathe from eBay. It is beautifully made, in the 1920s, with no regard to cost practicality or logic. One of these: http://www.lathes.co.uk/rivett/page2.html It isn't quite as nice as the one in the pictures, and has no changewheels or screwcutting box. (imagine is stops short at the back of the headstock). Should I CNC it? If I do, I would have to do it sympathetically. (My other hobby is vehicles from the same era). As the entire cross-slide pops off at the flick of a lever, it is not difficult to imagine a slot-on CNC cross-slide, possibly incorporating a tool turret. In this respect the conversion is easier than the Chinese lathe I converted. However, the Z-axis poses something of a quandry. There is no way at all to swap the leadscrew to a ballscrew. It sits snugly in a semicircular slot in the bed. So, perhaps I could mount a ballscrew on a bracket at the back. Then I could slot-on the CNC top-slide and bolt it to the nut, and if I wanted to use the lathe in manual mode I could unbolt it, swap back to the manual toolslide, and resort to craftsmanship. Or, I could just convert it to an electric leadscrew with an Arduino and sell it on as a working lathe. I do think it needs to be mounted on an oak cabinet like the original Rivett ones. I think that looks great :-) (Then flat-belt drive to a motor/vfd mounted underneath) If it's a piece of iron to you, then hack away. If you see value in it's authenticity, then why not fix it up and re-sell it, and put the money towards a more 'appropriate' machine. (presumably more recent) I have a similar dilemma, but with a mint condition Myford 7 that was my fathers'. I haven't switched it on for 3 years because it's a pain to use, but why CNC it and butcher it when I have a CNC lathe already??? Regards Roland Hi all, I have a Jet lathe that I'm deep into converting to CNC. If I had it to do again I would buy a CNC lathe with a dead control. So much good stuff comes with that approach, servo motors, limit switches, etc. Unfortunately, just getting dead iron here is expensive. It is bad enough from LA but much worse from IL east. Hard to win. maybe not even 2 cents worth. Dave -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Just our first retroffiting with linuxCNC
2013/6/12 Sebastian Kuzminsky s...@highlab.com On 6/12/13 08:22 , Luis Bellot wrote: Hello, This is a video of our first machine working with linuxCNC. It is in a platform shoes factory in Spain. http://youtu.be/ehIIegO4gHQ Hi Luis, that's very cool! I love seeing people use LinuxCNC in production environments. Do you have a picture of the finished shoe? The video description said you're using a modified version of LinuxCNC, just out of curiosity what changes did you make? Yes, please, share more details of what is under the hood! From the description it seems that you have integrated toolpath calculation (CAM) in LinuxCNC. Is that really so? -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
2013/6/12 andy pugh bodge...@gmail.com I accidentally bought another lathe from eBay. Thank you very much, this sentence made my day! Was it a hardcore weekend to take 3 days to uncover all the consequences? :)) -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
Gentlemen, I always enter these meetings (Galesburg and Wichita) without a personal agenda. This allows me to enjoy whatever opportunity presents itself. This meeting is by no means exclusive to developers. Everyone is welcome/encouraged to attend. The more the merrier. Come and have fun. I can understand being disappointed with not completing a task or project during the week but if you get to know all the people you will find help that lasts far longer than the meeting week. Remember, a meeting and fee schedule do not exist. As for why it is not promoted and the website or forum or IRC - I have no idea. I am hardly ever on the forum, hardly ever on IRC. thanks Stuart Look forward to seeing whomever shows up. :) -- dos centavos -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
yeah - made me laugh I have done that a time or two (not a lathe) and wasn't even drinking. On Wed, Jun 12, 2013 at 3:25 PM, Viesturs Lācis viesturs.la...@gmail.comwrote: 2013/6/12 andy pugh bodge...@gmail.com I accidentally bought another lathe from eBay. Thank you very much, this sentence made my day! Was it a hardcore weekend to take 3 days to uncover all the consequences? :)) -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- dos centavos -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
My shop workload will not let me stay the whole week. So should I come for the beginning or the end?I have 3 days to spend. On Jun 12, 2013, at 12:45 PM, Jon Elson el...@pico-systems.com wrote: andy pugh wrote: On 12 June 2013 16:10, Kenneth Lerman kenneth.ler...@se-ltd.com wrote: If you are vegan, I'll buy you a carrot. :-) I'll take you up on the carrot if it is a generic offer. There's an Indian place in Wichita that is VEY good! They had a lentil soup there that I'd love to get the recipe for. I think both Jeff and Chris Radek (have to specify last name there, we have a couple Chris's) are both vegan, so you will be in good company. Jon -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wednesday 12 June 2013 17:20:57 Gene Heskett did opine: On Wednesday 12 June 2013 11:44:39 andy pugh did opine: On 12 June 2013 16:05, Gene Heskett ghesk...@wdtv.com wrote: I must have a broken install here, You need linuxcnc-dev (I don't actually know why comp isn't installed as standard, I don't think it is enormous) http://www.linuxcnc.org/docs/html/hal/comp.html Section 2 Got it Andy thanks for the quick reply, but if I don't get at this yard, I'll be making pea soup without the peas before this day is over. Cheers, Gene Call me a dummy, Andy. Had synaptic install it, even added its location to my $PATH, but halrun still can't find it. Same error. Do I need a chaw of Kentucky Twist to make it work? Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml Support your local police force -- steal!! A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
usually - in my experience - the end of the week is usually the busiest.. We are driving Wednesday morning and leaving Sunday. sam On 06/12/2013 04:08 PM, tcninj...@yahoo.com wrote: My shop workload will not let me stay the whole week. So should I come for the beginning or the end?I have 3 days to spend. On Jun 12, 2013, at 12:45 PM, Jon Elson el...@pico-systems.com wrote: andy pugh wrote: On 12 June 2013 16:10, Kenneth Lerman kenneth.ler...@se-ltd.com wrote: If you are vegan, I'll buy you a carrot. :-) I'll take you up on the carrot if it is a generic offer. There's an Indian place in Wichita that is VEY good! They had a lentil soup there that I'd love to get the recipe for. I think both Jeff and Chris Radek (have to specify last name there, we have a couple Chris's) are both vegan, so you will be in good company. Jon -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] looking for a non-linearity in spindle speed control.
On Wednesday 12 June 2013 17:35:33 Gene Heskett did opine: On Wednesday 12 June 2013 17:20:57 Gene Heskett did opine: On Wednesday 12 June 2013 11:44:39 andy pugh did opine: On 12 June 2013 16:05, Gene Heskett ghesk...@wdtv.com wrote: I must have a broken install here, You need linuxcnc-dev (I don't actually know why comp isn't installed as standard, I don't think it is enormous) http://www.linuxcnc.org/docs/html/hal/comp.html Section 2 Got it Andy thanks for the quick reply, but if I don't get at this yard, I'll be making pea soup without the peas before this day is over. Cheers, Gene Call me a dummy, Andy. Had synaptic install it, even added its location to my $PATH, but halrun still can't find it. Same error. Do I need a chaw of Kentucky Twist to make it work? Cheers, Gene Progress, maybe, different error anyway: gene@coyote:~/linuxcnc$ sudo comp --install lincurve.comp Traceback (most recent call last): File /usr/bin/comp, line 1338, in module main() File /usr/bin/comp, line 1307, in main process(f, mode, outfile) File /usr/bin/comp, line 1178, in process a, b = parse(filename) File /usr/bin/comp, line 411, in parse a, b = f.split(\n;;\n, 1) ValueError: need more than 1 value to unpack Does this work with the std 10.04.4 python install? Copy-paste from FF error? Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene is up! My views http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml Marriage is the process of finding out what kind of man your wife would have preferred. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
2013/6/12 Matt Shaver m...@mattshaver.com: On Wed, 12 Jun 2013 13:17:05 +0200 Sven Wesley svenne.d...@gmail.com wrote: ...and why isn't it promoted at http://linuxcnc.org? Mostly because we're a bunch of knuckleheads. Is this you? https://www.facebook.com/sven.wesley I ask because if it is, you probably don't live in the US (if you're wondering, it was the diacritical marks that gave you away). Anyway, Wichita, Kansas is where Stuart Stevenson has his airplane parts making shop. Every once in a while he (and Roland Friestad in Galesburg, Illinois before him) has a get together of the linuxcnc developers. It's hard to recommend that someone attend these meetings unless they are a hard core linuxcnc enthusiast. If you've never been to one, whatever you imagine these meetings to be like is probably wrong. Let's just say they are a rather singular experience, kind of like Burning Man but a lot smaller and without girls. Anyway, if I have the right Sven Wesley, you seem to be one of those X-Games/Extreme Sports guys so I can't rule out the possibility that you might own an airplane. If so, and you decide to show up, call me on my cell at (443)789-4628 and I'll get you picked up from the airport (ICT). If you come, I'll buy you a steak dinner (apologies if you're vegan). Thanks, Matt Yes, that's me. And it's not very difficult to find me, with or without diacrit's (NSA; is it good or bad from a terrorist point of view to have a 1 in a 9-billion unique name?). This is more or less the only communication channel I'm using for LinuxCNC. As I see it it's kinda sad that here is a large open community but the core(?) developers get together without anyone outside the developer's list knowing about it. I would say I'm very pro LinuxCNC and even though I don't have time to code anything right now because of other software projects it might be possible that I chime in somewhere in the future. And with that said, I think more people like me would involve themselves in the project if we could at least get a glance what's happening. Don't get me wrong here, you all do a terrific job, my machines runs daily thanks to your work and of course you should meat up and have a bear or two. Carrots aren't for pilots. On the other hand (I have expressed the same opinion before) I think there are too many communication channels for this project. Several mailing list, IRC, forum here forum there, wiki documents everywhere. I could have missed it, there probably was a note somewhere (several people do know about it for sure) but I couldn't find a reference what it is all about. Where I live, companies can clear out VAT against investments. I have too much VAT generated by sales right now and a business trip to the states could easily been covered by the firm. You never now, next time I might show up. If I know about it. BTW, I do have a license. But I prefer it engineless. ;) http://www.youtube.com/watch?feature=player_detailpagev=J3NyptGJzLo#t=159s And my carrot soup is kicking. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Upgrade to ATC
2013/6/12 Sven Wesley svenne.d...@gmail.com: I saw a really nice ATC as an add-on that fits the common Chinese VFD spindles. It was very nice looking but expensive. /S Found it! http://store.blurrycustoms.com/SearchResults.asp?Cat=46 -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Unimat CNC Lathe demo'd last night.
On 12 June 2013 17:01, John Alexander Stewart ivatt...@gmail.com wrote: I've applied for a table at the Ottawa (Canada) Maker Faire this coming Aug31/Sep1 weekend; want to show what is both easy and possible - maybe two conflicting goals? I wouldn't have said so, it isn't like the area of the Venn diagram which is the overlap of easy and impossible is very large :-) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
On 12 June 2013 17:15, John Alexander Stewart ivatt...@gmail.com wrote: Going from a point-cloud to a parametric solid is not even slightly easy. It's not that hard. In my Android App (for instance) I take STL vertices, group them, then recreate triangles; it makes rendering much faster, and lighting/texturing much better. That isn't quite the same thing, though. A scanned point cloud probably has too many points, and the position of each point has some dither. Deciding what is noise and what is features is one complication. It gets even harder if you have two surfaces very close together (an inside and an outside for example). Even if you build an STL from the points, that is still nowhere near a parametric solid. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On 12 June 2013 18:28, Roland Jollivet roland.jolli...@gmail.com wrote: If it's a piece of iron to you, then hack away. If you see value in it's authenticity, then why not fix it up and re-sell it, and put the money towards a more 'appropriate' machine. (presumably more recent) Fixing it up will require at least some form of power-shaft and leadscrew drive. Whilst I do have the technology to make up a set of backgears, I doubt that anyone would want it even then. To be honest I like the Steampunk ethos of a quarter-sawn oak CNC lathe :-) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] What is the Wichita meeting?
Very cool! N. Christopher Perry On Jun 12, 2013, at 17:50, Sven Wesley svenne.d...@gmail.com wrote: 2013/6/12 Matt Shaver m...@mattshaver.com: On Wed, 12 Jun 2013 13:17:05 +0200 Sven Wesley svenne.d...@gmail.com wrote: ...and why isn't it promoted at http://linuxcnc.org? Mostly because we're a bunch of knuckleheads. Is this you? https://www.facebook.com/sven.wesley I ask because if it is, you probably don't live in the US (if you're wondering, it was the diacritical marks that gave you away). Anyway, Wichita, Kansas is where Stuart Stevenson has his airplane parts making shop. Every once in a while he (and Roland Friestad in Galesburg, Illinois before him) has a get together of the linuxcnc developers. It's hard to recommend that someone attend these meetings unless they are a hard core linuxcnc enthusiast. If you've never been to one, whatever you imagine these meetings to be like is probably wrong. Let's just say they are a rather singular experience, kind of like Burning Man but a lot smaller and without girls. Anyway, if I have the right Sven Wesley, you seem to be one of those X-Games/Extreme Sports guys so I can't rule out the possibility that you might own an airplane. If so, and you decide to show up, call me on my cell at (443)789-4628 and I'll get you picked up from the airport (ICT). If you come, I'll buy you a steak dinner (apologies if you're vegan). Thanks, Matt Yes, that's me. And it's not very difficult to find me, with or without diacrit's (NSA; is it good or bad from a terrorist point of view to have a 1 in a 9-billion unique name?). This is more or less the only communication channel I'm using for LinuxCNC. As I see it it's kinda sad that here is a large open community but the core(?) developers get together without anyone outside the developer's list knowing about it. I would say I'm very pro LinuxCNC and even though I don't have time to code anything right now because of other software projects it might be possible that I chime in somewhere in the future. And with that said, I think more people like me would involve themselves in the project if we could at least get a glance what's happening. Don't get me wrong here, you all do a terrific job, my machines runs daily thanks to your work and of course you should meat up and have a bear or two. Carrots aren't for pilots. On the other hand (I have expressed the same opinion before) I think there are too many communication channels for this project. Several mailing list, IRC, forum here forum there, wiki documents everywhere. I could have missed it, there probably was a note somewhere (several people do know about it for sure) but I couldn't find a reference what it is all about. Where I live, companies can clear out VAT against investments. I have too much VAT generated by sales right now and a business trip to the states could easily been covered by the firm. You never now, next time I might show up. If I know about it. BTW, I do have a license. But I prefer it engineless. ;) http://www.youtube.com/watch?feature=player_detailpagev=J3NyptGJzLo#t=159s And my carrot soup is kicking. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
I support the idea of using what you need and removing what you don't need. I was going to use discarding instead of removing but when you get the to shops you will see why I did not use discarding. :) On Wed, Jun 12, 2013 at 5:33 PM, andy pugh bodge...@gmail.com wrote: On 12 June 2013 18:28, Roland Jollivet roland.jolli...@gmail.com wrote: If it's a piece of iron to you, then hack away. If you see value in it's authenticity, then why not fix it up and re-sell it, and put the money towards a more 'appropriate' machine. (presumably more recent) Fixing it up will require at least some form of power-shaft and leadscrew drive. Whilst I do have the technology to make up a set of backgears, I doubt that anyone would want it even then. To be honest I like the Steampunk ethos of a quarter-sawn oak CNC lathe :-) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- dos centavos -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Upgrade to ATC
On 12 June 2013 23:07, Sven Wesley svenne.d...@gmail.com wrote: Found it! http://store.blurrycustoms.com/SearchResults.asp?Cat=46 Isn't that a complete replacement spindle? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On 06/12/2013 03:33 PM, andy pugh wrote: On 12 June 2013 18:28, Roland Jollivet roland.jolli...@gmail.com wrote: If it's a piece of iron to you, then hack away. If you see value in it's authenticity, then why not fix it up and re-sell it, and put the money towards a more 'appropriate' machine. (presumably more recent) Fixing it up will require at least some form of power-shaft and leadscrew drive. Whilst I do have the technology to make up a set of backgears, I doubt that anyone would want it even then. To be honest I like the Steampunk ethos of a quarter-sawn oak CNC lathe :-) If I may, my vote would be to restore the Rivett back to the original condition. It seems to me to be the shortest path to having something of value. If you need a CNC lathe, sell the Rivett, and buy an HNC or CHNC which would be a much better CNC project, but I'm biased. I have these on my someday list: http://www.wallacecompany.com/machine_shop/Std_Engr_Works/ (1916-18?) http://www.wallacecompany.com/machine_shop/Craftsman_AA_109/ (1950's?) http://www.wallacecompany.com/old_lathe/ (1950's?) The Oak stand is way cool: http://www.lathes.co.uk/rivett/img13.gif The oak stand reminds me of when I was a young machinist and Gerstner tools boxes where a prized possession. http://www.gerstnerusa.com/index.html ... and when I was at the UC Santa Barbara Physics machine shop. It had, if I recall correctly, thick, end grain pine floors, which were very nice to work on. -- Kirk www.wallacecompany.com/machine_shop -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On 13 June 2013 00:22, Kirk Wallace kwall...@wallacecompany.com wrote: If I may, my vote would be to restore the Rivett back to the original condition. It seems to me to be the shortest path to having something of value. If you need a CNC lathe, sell the Rivett, and buy an HNC or CHNC which would be a much better CNC project, but I'm biased. I already have a CNC lathe, though I mainly use it for one-off and experimental style work. In fact the CNC aspect for me is mainly an extension of conventional power feed that returns to the start point and takes another cut until completed. I do 95% of the things I do on the lathe just using the same 6 macros. So, I have concluded that what I need is a conventional lathe, with a large spindle bore, a set of rests, and that will fit in a small space. In fact what I need is probably a Harrison M250, or better still the M280 CNC trainer version. I only really bought the Rivett because they have fascinated me since I saw them on the lathes.co.uk page. I paid £120 for it, which at the moment isn't a great sum of money to me. I spent £99 on a ballscrew for my milling machine only a week ago. However, I do want to make the Rivett useful and usable again. It was bought as for parts or not working and I am determined that it won't leave me in the same state. It needs a motor and drive system, and underdrives always look neatest to me with the flat-bed lathes, so that is decided. I don't have any of the changewheel or screwcutting gearbox parts (other than the quadrant). Finding the parts seems unlikely, certainly at a sensible cost. What would make a lot of sense would be to replace the original changewheel arrangement with an electronic leadscrew drive. (this could easily be a second motor inside the cabinet, and a toothed belt drive, and would be effectively invisible. This could be nothing more than an Arduino with an LCD display. Add three gear-tooth sensors inside the backgear cover, and the machine suddenly becomes quite useful. (Though I am also short of a threading indicator) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] OT: USM Motors
Has anyone here worked on ultrasonic motors? I need to repair one (Canon lens) and need some insight. Such as, is there something like a continuity check to see what part of the motor might have a fault? http://en.wikipedia.org/wiki/Ultrasonic_motor http://www.noliac.com/Files/Billeder/Pdf/Pdf%20%20external/Piezoelectric_ultrasonic_motors.pdf http://photo.net/canon-eos-digital-camera-forum/00QHjI -- Kirk http://www.wallacecompany.com/machine_shop/index.html -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On 06/12/2013 04:43 PM, andy pugh wrote: ... snip So, I have concluded that what I need is a conventional lathe, with a large spindle bore, a set of rests, and that will fit in a small space. In fact what I need is probably a Harrison M250, or better still the M280 CNC trainer version. ... snip I don't have any of the changewheel or screwcutting gearbox parts (other than the quadrant). Finding the parts seems unlikely, certainly at a sensible cost. Making the gears and other bits should not take a lot of magic. It becomes a machining project instead of a software/electronics project. What would make a lot of sense would be to replace the original changewheel arrangement with an electronic leadscrew drive. (this could easily be a second motor inside the cabinet, and a toothed belt drive, and would be effectively invisible. This could be nothing more than an Arduino with an LCD display. Add three gear-tooth sensors inside the backgear cover, and the machine suddenly becomes quite useful. (Though I am also short of a threading indicator) The ELS controllers I found: http://www.autoartisans.com/ELS/ http://www.cnccookbook.com/MTLatheElecLeadMockDocs.htm don't need a threading indicator, as far as I can tell. -- Kirk http://www.wallacecompany.com/machine_shop/index.html -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On Thu, 2013-06-13 at 00:43 +0100, andy pugh wrote: On 13 June 2013 00:22, Kirk Wallace kwall...@wallacecompany.com wrote: If I may, my vote would be to restore the Rivett back to the original condition. It seems to me to be the shortest path to having something of value. If you need a CNC lathe, sell the Rivett, and buy an HNC or CHNC which would be a much better CNC project, but I'm biased. I already have a CNC lathe, though I mainly use it for one-off and experimental style work. In fact the CNC aspect for me is mainly an extension of conventional power feed that returns to the start point and takes another cut until completed. I do 95% of the things I do on the lathe just using the same 6 macros. So, I have concluded that what I need is a conventional lathe, with a large spindle bore, a set of rests, and that will fit in a small space. In fact what I need is probably a Harrison M250, or better still the M280 CNC trainer version. I only really bought the Rivett because they have fascinated me since I saw them on the lathes.co.uk page. I paid £120 for it, which at the moment isn't a great sum of money to me. I spent £99 on a ballscrew for my milling machine only a week ago. However, I do want to make the Rivett useful and usable again. It was bought as for parts or not working and I am determined that it won't leave me in the same state. It needs a motor and drive system, and underdrives always look neatest to me with the flat-bed lathes, so that is decided. I don't have any of the changewheel or screwcutting gearbox parts (other than the quadrant). Finding the parts seems unlikely, certainly at a sensible cost. What would make a lot of sense would be to replace the original changewheel arrangement with an electronic leadscrew drive. (this could easily be a second motor inside the cabinet, and a toothed belt drive, and would be effectively invisible. This could be nothing more than an Arduino with an LCD display. Add three gear-tooth sensors inside the backgear cover, and the machine suddenly becomes quite useful. (Though I am also short of a threading indicator) Hi, In a mild fit of madness I thought about offsetting the spindle and the tailstock several inches in X and an inch plus in Y to emulate a slantbed. Thinking back on the whole project I should have just built a lathe with a decent bore and very responsive Z and X designed to do threading on (rifle) barrel shanks. Ah! Hindsight is such good stuff. ;-) Taper, etc can be done nicely on a standard lathe. Dave dave -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: USM Motors
Kirk Wallace wrote: Has anyone here worked on ultrasonic motors? I need to repair one (Canon lens) and need some insight. Such as, is there something like a continuity check to see what part of the motor might have a fault? Probably not. The piezo components are going to look like big capacitors. Possibly you could get a voltage spike out of them by rapping on the motor. Jon -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On 13 June 2013 01:21, Kirk Wallace kwall...@wallacecompany.com wrote: Making the gears and other bits should not take a lot of magic. It becomes a machining project instead of a software/electronics project. But the result is rather tedious. Have you used a changewheel-only lathe? Having said that, I nearly always feed at the same rate on my cnc lathe, so perhaps it wouldn't be so bad. I do have feed-override there though. The better solution would be to recreate the Norton box, but that looks like a real project. The ELS controllers I found: http://www.autoartisans.com/ELS/ http://www.cnccookbook.com/MTLatheElecLeadMockDocs.htm don't need a threading indicator, as far as I can tell. One claims to have electronic half-nut control. Whatever that does. I can't see any way for them to know where you have wound the carriage back to, so I do think a threading indicator is still needed. The second one appears to give very much the same style of working as my LinuxCNC setup. But probably at rather more cost, and rather less extra capability. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
Both of those require stepper motors and spindle sensing, that's the electronic half-nut control, you would only have to add a thing or two more and you would have a complete CNC setup. Martin From: bodge...@gmail.com Date: Thu, 13 Jun 2013 02:48:02 +0100 To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Should I or Shouldn't I? The ELS controllers I found: http://www.autoartisans.com/ELS/ http://www.cnccookbook.com/MTLatheElecLeadMockDocs.htm don't need a threading indicator, as far as I can tell. One claims to have electronic half-nut control. Whatever that does. I can't see any way for them to know where you have wound the carriage back to, so I do think a threading indicator is still needed. The second one appears to give very much the same style of working as my LinuxCNC setup. But probably at rather more cost, and rather less extra capability. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
On 06/12/2013 06:48 PM, andy pugh wrote: ... snip One claims to have electronic half-nut control. Whatever that does. I can't see any way for them to know where you have wound the carriage back to, so I do think a threading indicator is still needed. One is supposed to engage the half-nut when the indicator reaches an appropriate location. I suspect the ELSs have an index sensor so they know when to start the thread, just like LinuxCNC. The second one appears to give very much the same style of working as my LinuxCNC setup. But probably at rather more cost, and rather less extra capability. I use LinuxCNC on my manual bridgeport as a DRO and Spindle controller. http://www.wallacecompany.com/machine_shop/EMC2/dro_vfd/ This was quite a while ago, now that I am getting better at Glade I'll need to redo this app. The Bridgeport had an Accurite display, but I sold it for what it would have cost to buy a PC for the LinuxCNC DRO. If you don't hack into the lathe proper, I'll 'allow' you to belt up the lead screw, install scales on the axes, hook up a VFD and tie it together with LinuxCNC. :) -- Kirk http://www.wallacecompany.com/machine_shop/index.html -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: USM Motors
On 06/12/2013 06:25 PM, Jon Elson wrote: Kirk Wallace wrote: Has anyone here worked on ultrasonic motors? I need to repair one (Canon lens) and need some insight. Such as, is there something like a continuity check to see what part of the motor might have a fault? Probably not. The piezo components are going to look like big capacitors. Possibly you could get a voltage spike out of them by rapping on the motor. Jon I do get a small voltage from the motor pins when I flex the ring, but at the time I had no information on what the pins did. I now have the service manual, which has a schematic of the drive circuit (an H-bridge). It shows four signals going to the motor, Phase A, Phase B, Ground, and Feedback. One plan might be to reproduce the circuit and have LinuxCNC provide the signals, then see what the feedback does or maybe see the motor move. There are a couple of 200 Volt capacitors in the circuit so this should make it more interesting. -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Upgrade to ATC
Lovely! But, alas, out of my non-professional price range. I built my whole machine for what that cost. N. Christopher Perry On Jun 12, 2013, at 18:07, Sven Wesley svenne.d...@gmail.com wrote: 2013/6/12 Sven Wesley svenne.d...@gmail.com: I saw a really nice ATC as an add-on that fits the common Chinese VFD spindles. It was very nice looking but expensive. /S Found it! http://store.blurrycustoms.com/SearchResults.asp?Cat=46 -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] OT: USM Motors
Aside from hooking up / rigging up an LCR meter and checking the capacitance of the various 'phases', there isn't much you can do. This measurement might indicate a cracked piezo element or broken contact where the circuit looks like a OC. Mechanically, there might be excessive surface wear / contamination on the friction surface. These are the first things I'd investigate. N. Christopher Perry On Jun 12, 2013, at 19:58, Kirk Wallace kwall...@wallacecompany.com wrote: Has anyone here worked on ultrasonic motors? I need to repair one (Canon lens) and need some insight. Such as, is there something like a continuity check to see what part of the motor might have a fault? http://en.wikipedia.org/wiki/Ultrasonic_motor http://www.noliac.com/Files/Billeder/Pdf/Pdf%20%20external/Piezoelectric_ultrasonic_motors.pdf http://photo.net/canon-eos-digital-camera-forum/00QHjI -- Kirk http://www.wallacecompany.com/machine_shop/index.html -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Should I or Shouldn't I?
andy you will not find a finer headstock, i agree to leave it in a condition that is readily convertable to original, but it is lacking enough that oyu need a solution anyhow so , convert it and make use of it or sell to someone that will restore it . i am going to cnc my 505 rivett in the near future but i will not alter it from stock On Wed, Jun 12, 2013 at 10:25 PM, Kirk Wallace kwall...@wallacecompany.comwrote: On 06/12/2013 06:48 PM, andy pugh wrote: ... snip One claims to have electronic half-nut control. Whatever that does. I can't see any way for them to know where you have wound the carriage back to, so I do think a threading indicator is still needed. One is supposed to engage the half-nut when the indicator reaches an appropriate location. I suspect the ELSs have an index sensor so they know when to start the thread, just like LinuxCNC. The second one appears to give very much the same style of working as my LinuxCNC setup. But probably at rather more cost, and rather less extra capability. I use LinuxCNC on my manual bridgeport as a DRO and Spindle controller. http://www.wallacecompany.com/machine_shop/EMC2/dro_vfd/ This was quite a while ago, now that I am getting better at Glade I'll need to redo this app. The Bridgeport had an Accurite display, but I sold it for what it would have cost to buy a PC for the LinuxCNC DRO. If you don't hack into the lathe proper, I'll 'allow' you to belt up the lead screw, install scales on the axes, hook up a VFD and tie it together with LinuxCNC. :) -- Kirk http://www.wallacecompany.com/machine_shop/index.html -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- We conclude that the Second Amendment protects an individual right to keep and bear arms. That right existed prior to the formation of the new government under the Constitution and was premised on the private use of arms for activities such as hunting and self-defense, the latter being understood as resistance to either private lawlessness or the depredations of a tyrannical government. - U.S. Court of Appeals, D.C. Circuit, March 9, 2007 jeremy youngs -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] 3d scanner
the above mentioned faro arm compares the product to the iges file and verifies . these are nice the one i used was 17000 out of the box . they are absolutely necessary for 5 axis swarfed surfaces on airframe parts . as to point cloud to parametric solid i have no idea how to do that so i will take your word for it . what i was infering to was this part of the statement Even if it did, one would have to scan a known-good-master at each step of the production for the test scan to reference against you wouldnt need a known good master if you were able to use an ices or other model to compare it to . that was the point of my comment but i now see the point cloud issue at hand . and your solution However, in this case I guess that you could create a virtual point-cloud from the IGES file for point-by-point comparison. which is basically working the problem backwards is exactly what the faro arm does , and is what i intended to convey by my previous post . now how it does it and why ??? well i never asked as the parts we were checking were 12 k eack so i was more worried about proper operation :) On Wed, Jun 12, 2013 at 10:50 AM, andy pugh bodge...@gmail.com wrote: On 12 June 2013 13:52, jeremy youngs jcyoung...@gmail.com wrote: not exactly just compare it to an iges file that will never change . or other parametric solid Going from a point-cloud to a parametric solid is not even slightly easy. However, in this case I guess that you could create a virtual point-cloud from the IGES file for point-by-point comparison. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- We conclude that the Second Amendment protects an individual right to keep and bear arms. That right existed prior to the formation of the new government under the Constitution and was premised on the private use of arms for activities such as hunting and self-defense, the latter being understood as resistance to either private lawlessness or the depredations of a tyrannical government. - U.S. Court of Appeals, D.C. Circuit, March 9, 2007 jeremy youngs -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Upgrade to ATC
Den 13 jun 2013 05:21 skrev N. Christopher Perry n_christopher_pe...@me.com: Lovely! But, alas, out of my non-professional price range. I built my whole machine for what that cost. N. Christopher Perry I know. Way too expensive. But it's at least an idea that could be developed. There are several Chinese spindle producers that sells a model with built in changer. You find them alibaba.com. Still pricey though. /S -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Upgrade to ATC
Den 13 jun 2013 01:18 skrev andy pugh bodge...@gmail.com: On 12 June 2013 23:07, Sven Wesley svenne.d...@gmail.com wrote: Found it! http://store.blurrycustoms.com/SearchResults.asp?Cat=46 Isn't that a complete replacement spindle? Yes but it is made as a piggy back on a Chinese spindle. /S -- This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
