Joe, It's been a few years since I did scaling, but I remember using a formula in the integrator's manual. It took into account motor revolution, leadscrew pitch, etc. And resulted in very specific number (for each axis) to plug into the ini file. I then verified each axis move with a dial indicator. This isn't much of a reply but I hope it helps. Jim
----- Original Message ----- From: Joe Spanier <[email protected]> To: [email protected] <[email protected]> Sent: Sun Feb 26 15:20:20 2012 Subject: [Emc-users] Axis Scale not quite right. HELPP!! Hello I recently built a new control for my cnc router. The router has been working for over a year, but I decided to rebuild the control with better drivers. The current configuration is as follows KL-5056 drivers C-10 BOB 40v 10amp power supply X axis -Green monster 425ozin motor from probotix.com- set to 16 microstepping at 4.3 amps- 25 pitch roller chain Y axis - Green monster 425ozin motor from probotix.com- set to 16 microstepping at 4.3 amps- 1/2-10 5 start acme screw Z axis 282 ozin motor from Keling inc also set to 16 microstepping at 4.3 amps 1/2-10 single start acme I also changed computers when I set this controller up. The new computer is an AMD 2.2ghz single core with 2 gig of ram The latency test came back around 44000us if I remember right. Now onto my problems All the parts that are coming off the machine are undersize. Tonight I cut some 3" circles that were coming out almost .020" under. My straight line travel is also about that much under. Im running about .012 of backlash comp on my X axis to compensate for the chain, which I also ran in my old configuration with great results. Im at a loss on how to handle this now and really just want a working machine again. Do you guys have any ideas on what could be causing this? Thanks for your time,Joe ________________________________ From: "[email protected]" <[email protected]> To: [email protected] Sent: Sunday, February 26, 2012 2:13 PM Subject: Emc-users Digest, Vol 70, Issue 131 Send Emc-users mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://lists.sourceforge.net/lists/listinfo/emc-users or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Emc-users digest..." Today's Topics: 1. Re: OT - Andy Pugh (Dave Caroline) 2. Re: OT: thread rolling (Ed) 3. Re: Why APT? (dave) 4. Re: Why APT? (Kirk Wallace) 5. Re: Film Emulsion for Encoder Wheels? (Jon Elson) 6. Re: OT - Andy Pugh (Dave) 7. Re: Film Emulsion for Encoder Wheels? (Dave) ---------------------------------------------------------------------- Message: 1 Date: Sun, 26 Feb 2012 18:51:06 +0000 From: Dave Caroline <[email protected]> Subject: Re: [Emc-users] OT - Andy Pugh To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <calfygtnbrxv_dvl1lkqfpjsnx25klizzw2fsbkxp_lhkmgj...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 I think there be bugs http://www.clipperroundtheworld.com/index.php/teams/derry-londonderry//crew-profiles/crew/ Dave Caroline On Sun, Feb 26, 2012 at 6:46 PM, dave <[email protected]> wrote: > http://www.w-w-i.com/clipper_1112_race/gallery.php?srcher=Andy+Pugh&strict=yes&gp=i&ht=20513&kt=20265&pg=1 > > ------------------------------------------------------------------------------ > Virtualization & Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------ Message: 2 Date: Sun, 26 Feb 2012 13:20:09 -0500 From: Ed <[email protected]> Subject: Re: [Emc-users] OT: thread rolling To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=us-ascii; format=flowed Roland Jollivet wrote: > And I thought thread rolling required huge rollers.... > > http://www.youtube.com/watch?v=rt8VfgfWa54 > > OK, it is a small OD, but I did'nt think it was doable. The whole > contraption looks pretty lightweight . > > Regards > Roland Lightweight except in price. My smaller roller head will do from 12mm to 22mm threads the larger will do 14mm to 32mm. I priced the smaller at $4K+ and the larger at twice that. These I picked up for under $100 after scrapping the lathe they came with. They are the slick trick if you have a lot of threads to make as they are much faster than even a CNC lathe. Setup time can be a killer on small jobs. Ed. ------------------------------ Message: 3 Date: Sun, 26 Feb 2012 11:22:03 -0800 From: dave <[email protected]> Subject: Re: [Emc-users] Why APT? To: [email protected] Message-ID: <20120226112203.66f882f9@dsk> Content-Type: text/plain; charset=US-ASCII On Sun, 26 Feb 2012 09:00:59 -0600 Stuart Stevenson <[email protected]> wrote: > I am an unashamed proponent of APT so take these comments in that > light. < massive snip> I can understand. You are good at it and you also have a very expensive and well supported version. I don't believe that is true of the conversion of APT from FORTRAN to the present code. It is very difficult to learn to use a package when there is no way to discern between bugs ( inadvertently introduced in translation) and user mistakes. I'm wondering if it might not be better to use the original code and run under a 360 emulator. Slow and sure (?) would be much better than fast and not so sure. I've had a simple move from start point to a line end up nowhere near the line. Practical? I did get a simple square to work but try something a bit more complicated and the results are not so good. ;-( Dave ------------------------------ Message: 4 Date: Sun, 26 Feb 2012 11:40:28 -0800 From: Kirk Wallace <[email protected]> Subject: Re: [Emc-users] Why APT? To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <1330285228.1288.51.camel@neptune> Content-Type: text/plain; charset="UTF-8" On Sun, 2012-02-26 at 11:22 -0800, dave wrote: > On Sun, 26 Feb 2012 09:00:59 -0600 > Stuart Stevenson <[email protected]> wrote: > > > I am an unashamed proponent of APT so take these comments in that > > light. > < massive snip> > > I can understand. You are good at it and you also have a very expensive > and well supported version. > > I don't believe that is true of the conversion of APT from FORTRAN to > the present code. It is very difficult to learn to use a package when > there is no way to discern between bugs ( inadvertently introduced in > translation) and user mistakes. I'm wondering if it might not be better > to use the original code and run under a 360 emulator. Slow and sure (?) > would be much better than fast and not so sure. I've had a simple move > from start point to a line end up nowhere near the line. > > Practical? > > I did get a simple square to work but try something a bit more > complicated and the results are not so good. ;-( > Dave I'm a little confused, my understanding is that there are two linux APT packages. One that was started from scratch, in C, is not finished and stalled, Aptos? The other in Fortran or rather based on, and sorta works, Apt360? -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------ Message: 5 Date: Sun, 26 Feb 2012 13:58:52 -0600 From: Jon Elson <[email protected]> Subject: Re: [Emc-users] Film Emulsion for Encoder Wheels? To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Kirk Wallace wrote: > I don't think laser printer output is nearly fine enough for .005" lines > and spaces, at least for a contact print. > > Right, that's why I made my own laser photoplotter, with 1000 x 1000 DPI. But, you may need even more. Some printing and copy outfits have laser plotters/typesetters that run at much higher resolution. And, of course, PCB makers have really high res. photoplotters. > I'm thinking of a single line mask scaled up by 25x taped to a box with > a strobe inside. Then mount the target to a rotary table and flash each > line in sequence through a camera lens to get the proper scale. It could > take a long time to do 1000 lines, but I think I know of some software > that could automate the process. > Arrgh, you are re-inventing the 1970's Gerber photoplotter. Jon ------------------------------ Message: 6 Date: Sun, 26 Feb 2012 15:05:20 -0500 From: Dave <[email protected]> Subject: Re: [Emc-users] OT - Andy Pugh To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Yep, since they haven't left port yet (I think) the logs seems to be of an older trip. Dave On 2/26/2012 1:51 PM, Dave Caroline wrote: > I think there be bugs > http://www.clipperroundtheworld.com/index.php/teams/derry-londonderry//crew-profiles/crew/ > > Dave Caroline > > On Sun, Feb 26, 2012 at 6:46 PM, dave<[email protected]> wrote: > >> http://www.w-w-i.com/clipper_1112_race/gallery.php?srcher=Andy+Pugh&strict=yes&gp=i&ht=20513&kt=20265&pg=1 >> >> ------------------------------------------------------------------------------ >> Virtualization& Cloud Management Using Capacity Planning >> Cloud computing makes use of virtualization - but cloud computing >> also focuses on allowing computing to be delivered as a service. >> http://www.accelacomm.com/jaw/sfnl/114/51521223/ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > ------------------------------------------------------------------------------ > Virtualization& Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------ Message: 7 Date: Sun, 26 Feb 2012 15:13:42 -0500 From: Dave <[email protected]> Subject: Re: [Emc-users] Film Emulsion for Encoder Wheels? To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed I'm not meaning to be a joy killer, but have you looked at the encoder wheels that you can buy from places like US Digital? The seem really cheap to me at $18 for a qty 1 - 2" diameter disk including a hub. Higher volumes and the prices drops quickly. I bet if you call them they will tell you how they make those. They are pretty open about their technology. Dave On 2/26/2012 12:59 PM, Greg Bernard wrote: > Why not use a laser cutting service to make encoders? The cost is reasonable > and they are capable of<0.002 features. Here is one in my area: > http://www.gatewaylaser.com/cutting.html. > > > > >> ________________________________ >> From: charles green<[email protected]> >> To: Enhanced Machine Controller (EMC)<[email protected]> >> Sent: Sunday, February 26, 2012 6:24 AM >> Subject: Re: [Emc-users] Film Emulsion for Encoder Wheels? >> >> nanosecond scale light pulses can be had for the focussing of a laser on a >> rotating pin hole in a sheet of houshold aluminium foil. i was just looking >> for single pulses, and used just one foil pin hole mounted on a cardboard >> disk about 100mm dia on a little dc motor. cnc with a pin punch instead of >> a spinning cutter could certainly generate a circular array of such holes. >> tip for small pin holes: use many layers of foil, and select from the >> bottom most layers. >> >> --- On Sat, 2/25/12, Kirk Wallace<[email protected]> wrote: >> >> >> From: Kirk Wallace<[email protected]> >> Subject: Re: [Emc-users] Film Emulsion for Encoder Wheels? >> To: "Enhanced Machine Controller (EMC)"<[email protected]> >> Date: Saturday, February 25, 2012, 9:41 AM >> >> >> On Sat, 2012-02-25 at 08:25 -0800, charles green wrote: >> >>> if you can work in 35mm space, make a large laser print of the wheel, >>> photograph it a few stops under exposed, over develop it, and cut the >>> finished disk out of the negative. works for crude diffractive lenses >>> too. >>> >> ... snip >> >> I need a larger encoder and preferably on glass, but I do have some >> Graflex cameras that hold larger film. I also have my father's darkroom >> equipment, but getting it all working again could be a whole other time >> and money sink. >> -- >> Kirk Wallace >> http://www.wallacecompany.com/machine_shop/ >> http://www.wallacecompany.com/E45/index.html >> California, USA >> >> >> ------------------------------------------------------------------------------ >> Virtualization& Cloud Management Using Capacity Planning >> Cloud computing makes use of virtualization - but cloud computing >> also focuses on allowing computing to be delivered as a service. >> http://www.accelacomm.com/jaw/sfnl/114/51521223/ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> ------------------------------------------------------------------------------ >> Virtualization& Cloud Management Using Capacity Planning >> Cloud computing makes use of virtualization - but cloud computing >> also focuses on allowing computing to be delivered as a service. >> http://www.accelacomm.com/jaw/sfnl/114/51521223/ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> >> >> >> > ------------------------------------------------------------------------------ > Virtualization& Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------ ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ ------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users End of Emc-users Digest, Vol 70, Issue 131 ****************************************** ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users This communication is for the use of the intended recipient only. It may contain information that is privileged and confidential. If you are not the intended recipient of this communication, the disclosure, copying, distribution or use hereof is prohibited. If you have received this communication in error, please advise me by return e-mail or by telephone and then delete it immediately.
<<attachment: winmail.dat>>
------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2
_______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
