Re: [Emc-users] Conversion Suggesions?
On 31 January 2014 05:30, Dave Cole linuxcncro...@gmail.com wrote: http://www.automationtechnologiesinc.com/wp-content/uploads/downloads/2014/01/2-Quadrant-BLDC-speed-driver-ver.-48ZWSK50-B-804-1.pdf It _looks_ like a conventional velocity-controlled servo drive (though I actually think it will be working in current mode). So, with PID in HAL, it ought to work just fine for position control. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 1/31/2014 7:41 AM, andy pugh wrote: On 31 January 2014 05:30, Dave Cole linuxcncro...@gmail.com wrote: http://www.automationtechnologiesinc.com/wp-content/uploads/downloads/2014/01/2-Quadrant-BLDC-speed-driver-ver.-48ZWSK50-B-804-1.pdf It _looks_ like a conventional velocity-controlled servo drive (though I actually think it will be working in current mode). So, with PID in HAL, it ought to work just fine for position control. If that drive follows these design ideas then I don't think you can do effective servo control with a 2 quadrant brushless DC drive. This document has some explanation as to why. Siemens always told us that 4 quadrant control was a requirement for effective controlled positioning - ala servo control. Here is an old TI app note. http://www.ti.com/lit/an/slua083/slua083.pdf Dave -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Wed, Jan 29, 2014 at 5:35 PM, Jeshua Lacock jes...@3dtopo.com wrote: Interesting - yeah works out to around the same price and would be a infinity better set up. Well, checking on Automation Tech, the same motor is listed at $78, I think. So, I don't know if Keling will honor the $52 price still on the Keling web site. The keling site may now be a zombie web site with nobody servicing the orders. I notice Lin Engineering seems to have the exact same motors, but they don't show prices online. Could I use the PWM Servo Amplifier to drive all 4 axes? One brushless PWM servo amp will drive each motor, so for 4 axes, you'd need 4 servo amps. Automation Technology is Keling. The Automation Tech web site is the current one. Dunno why John keeps the old site up and running other than as a visual redirect. He ought to scrap the entire old site and leave a dummy page with a link to the new site. Mark -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 01/30/2014 04:23 AM, Mark Wendt wrote: Automation Technology is Keling. The Automation Tech web site is the current one. Dunno why John keeps the old site up and running other than as a visual redirect. He ought to scrap the entire old site and leave a dummy page with a link to the new site. Yes, it is a real problem that he has two web stores with SIGNIFICANTLY different prices on the same items. I wonder if the Keling site is a zombie that no one has access to anymore? Jon -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
2014-01-30 Jeshua Lacock jes...@3dtopo.com: Or perhaps this driver: http://www.automationtechnologiesinc.com/products-page/nema23/dc-brushless-driver-for-kl23bls-115 Does anyone have experience with these drives? I have few servo motors whose current requirements are too large for 7i39 drive, so this one looks really tempting. But I feel reserved about the motor position feedback. So what functionality does it have? Only commutating current in phases? I feel confident that no feedback loop is closed in the drives. So are these drives any good? Viesturs -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 1/30/2014 2:44 PM, Viesturs Lācis wrote: 2014-01-30 Jeshua Lacock jes...@3dtopo.com: Or perhaps this driver: http://www.automationtechnologiesinc.com/products-page/nema23/dc-brushless-driver-for-kl23bls-115 Does anyone have experience with these drives? I have few servo motors whose current requirements are too large for 7i39 drive, so this one looks really tempting. But I feel reserved about the motor position feedback. So what functionality does it have? Only commutating current in phases? I feel confident that no feedback loop is closed in the drives. So are these drives any good? Viesturs I think that drive is targeted for the speed control market, not the servo positioning market. The hint is: pot control with external 5 volt control available Plus no mention of servo control, and it is only a 2 quadrant drive so it cannot regenerate power back into the power supply. A 4 quadrant drive is required for that. http://en.wikipedia.org/wiki/File:Four_quadrant_motion_control_of_a_motor.jpg Dave -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 30 January 2014 22:23, Dave Cole linuxcncro...@gmail.com wrote: The hint is: pot control with external 5 volt control available However, it might still work. LinuxCNC can output speed-dir if needed. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
Except that if you put it on an axis and you wanted to stop, the drive could not apply braking torque.. I can't imagine that working on a servo axis. Even steppers can apply braking torque. Dave On 1/30/2014 5:44 PM, andy pugh wrote: On 30 January 2014 22:23, Dave Cole linuxcncro...@gmail.com wrote: The hint is: pot control with external 5 volt control available However, it might still work. LinuxCNC can output speed-dir if needed. -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 30 January 2014 23:58, Dave Cole linuxcncro...@gmail.com wrote: Except that if you put it on an axis and you wanted to stop, the drive could not apply braking torque.. Surely there is no torque only when there is no position error. With the slightest hint of overshoot the motor will be applied in reverse? (unless when they talk of 2-quadrant control they really do mean that the motor will only provide torque in the current direction of motion, which would, on the face of it, be hard to enforce with only hall-sensor commutation) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Thursday 30 January 2014 20:28:27 Dave Cole did opine: Except that if you put it on an axis and you wanted to stop, the drive could not apply braking torque.. I can't imagine that working on a servo axis. Even steppers can apply braking torque. Dave I do, by making hal apply a staged dynamic braking load, so even with all that weight, I can do the reversal at the left end of a G33.1 in a hair over 2 seconds. From 350 rpm. On 1/30/2014 5:44 PM, andy pugh wrote: On 30 January 2014 22:23, Dave Cole linuxcncro...@gmail.com wrote: The hint is: pot control with external 5 volt control available However, it might still work. LinuxCNC can output speed-dir if needed. -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.cl ktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Home on the Range was originally written in beef-flat. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 1/30/2014 7:08 PM, andy pugh wrote: On 30 January 2014 23:58, Dave Cole linuxcncro...@gmail.com wrote: Except that if you put it on an axis and you wanted to stop, the drive could not apply braking torque.. Surely there is no torque only when there is no position error. With the slightest hint of overshoot the motor will be applied in reverse? (unless when they talk of 2-quadrant control they really do mean that the motor will only provide torque in the current direction of motion, which would, on the face of it, be hard to enforce with only hall-sensor commutation) Here is a link that Keling has for a similar motor. http://www.automationtechnologiesinc.com/products-page/dc-brushless-motor/kl34bls-series-12 At the bottom of the page is a another link showing how it can be controlled with a LPT breakoutboard and Mach3. http://www.automationtechnologiesinc.com/wp-content/uploads/downloads/2014/01/2-Quadrant-BLDC-speed-driver-ver.-48ZWSK50-B-804-1.pdf They have that wired similar to what someone would for a spindle drive control via Mach3. No positioning control, just speed. What else is odd about this diagram is that the C10 board does not have an analog output on it.. So they must be configuring Mach3 to send a PWM signal to the SV pin on the drive?? But apparently it works with that driver. Dave -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Jan 22, 2014, at 10:21 PM, Jon Elson el...@pico-systems.com wrote: 570 Oz-In is a lot, but of course, that is only at standstill. But, they should do fine, especially with a belt reduction. 5 A will require the big Gecko 203 drive. For that, you might consider Gecko's servo motors and our PWM servo drives. The price would be pretty close, and the performance will be a lot better. I can advise on specific models, encoders, etc. they have a very affordable size 23 brushless motor, the KL23BLS115, good for 180 Oz-In (but that is a RUNNING rating, not a standstill rating). $52 without encoder. You can get a good encoder with index from Digi-Key for about $38. I have found this motor to work quite well with my servo amps and our Universal PWM Controller. Hi Jon, Interesting - yeah works out to around the same price and would be a infinity better set up. Could I use the PWM Servo Amplifier to drive all 4 axes? I have had good luck with the encoders Kelling sells - I love that they have adjustable CPM. What encoders do you like? Anything else I need? Where does one get the connectors for your PWM Panel? One last question - how would you recommend going about adding a 5th axis? I could live with 4 axes for now manually setting a 5th axis (e.g. tilt - but 5 would be ideal). As a side note I have opted to upgrade the ACME screws to a ballscrews as the first step. Thanks, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Jan 29, 2014, at 10:22 AM, Jon Elson el...@pico-systems.com wrote: On 01/29/2014 04:04 AM, Jeshua Lacock wrote: they have a very affordable size 23 brushless motor, the KL23BLS115, good for 180 Oz-In (but that is a RUNNING rating, not a standstill rating). $52 without encoder. You can get a good encoder with index from Digi-Key for about $38. I have found this motor to work quite well with my servo amps and our Universal PWM Controller. Hi Jon, Interesting - yeah works out to around the same price and would be a infinity better set up. Well, checking on Automation Tech, the same motor is listed at $78, I think. So, I don't know if Keling will honor the $52 price still on the Keling web site. The keling site may now be a zombie web site with nobody servicing the orders. I notice Lin Engineering seems to have the exact same motors, but they don't show prices online. Could I use the PWM Servo Amplifier to drive all 4 axes? One brushless PWM servo amp will drive each motor, so for 4 axes, you'd need 4 servo amps. I see. That would pretty much be a deal breaker as just the power supply alone for 5 axes would be $750. Could I use something else (not that I don't think its not worth it - I just don't have the budget). Can I use toroidal or switching power supply (even if it may mean going with brushed motors)? Or perhaps this driver: http://www.automationtechnologiesinc.com/products-page/nema23/dc-brushless-driver-for-kl23bls-115 I have had good luck with the encoders Kelling sells - I love that they have adjustable CPM. What encoders do you like? That would be the AMT10x series. They are certainly very affordable, but have some lag when the motor is accelerating. I found it a lot easier to tune the servo loop when using classic optical encoders without interpolation. I remember you mentioning that now. Do you like U.S. Digital or what is your preference? Anything else I need? Where does one get the connectors for your PWM Panel? The connectors for the PWM controller are included. We now supply 2-part pluggable screw-terminal connectors. Oh nice! One last question - how would you recommend going about adding a 5th axis? I could live with 4 axes for now manually setting a 5th axis (e.g. tilt - but 5 would be ideal). Two PWM controllers can be daisy chained off one parallel port, to go up to 8 axes. You can use the extra channels for spindle encoder/speed control, jog pendant, etc. When you connect the additional controller, the driver automatically detects it and exports additional HAL pins. Awesome! Do they each get their own serial port? Best, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Jan 29, 2014, at 6:26 PM, Jon Elson el...@pico-systems.com wrote: On 01/29/2014 04:35 PM, Jeshua Lacock wrote: I see. That would pretty much be a deal breaker as just the power supply alone for 5 axes would be $750. Could I use something else (not that I don't think its not worth it - I just don't have the budget). Can I use toroidal or switching power supply (even if it may mean going with brushed motors)? Or perhaps this driver: http://www.automationtechnologiesinc.com/products-page/nema23/dc-brushless-driver-for-kl23bls-115 Our PWM servo amp is not a power supply is is a power amplifier that takes a control signal and sends a measured amount of power to the motor. The Automation Tech device you mention is a SPINDLE driver, not meant for positioning servos. Understood, thank you for clearing that up! So I guess to use a power supply I would have to use something like a brushed motors, Gecko controllers and your USC instead (like I have now for another machine). The Automation Tech device says: DC Brushless Driver for KL23BLS-115. I thought KL23BLS-115 is the brushless motor you had recommended: http://www.automationtechnologiesinc.com/products-page/dc-brushless-motor/kl23bls-series-11 It says on the product description: An external voltage of 0-5V can also be used to control the speed. The direction of the motor is specified by direction control input. - See more at: http://www.automationtechnologiesinc.com/products-page/nema23/dc-brushless-driver-for-kl23bls-115#sthash.pyCNlU0w.dpuf; Apparently they also have a driver for their smaller brushless motors. I remember you mentioning that now. Do you like U.S. Digital or what is your preference? US Digital is OK, but the Avago encoders are not much more expensive, and you get a wide range of resolutions, as well as an index output. Cool, thanks! One last question - how would you recommend going about adding a 5th axis? I could live with 4 axes for now manually setting a 5th axis (e.g. tilt - but 5 would be ideal). Two PWM controllers can be daisy chained off one parallel port, to go up to 8 axes. You can use the extra channels for spindle encoder/speed control, jog pendant, etc. When you connect the additional controller, the driver automatically detects it and exports additional HAL pins. Awesome! Do they each get their own serial port? There is no serial port. These devices are controlled by the PC PARALLEL port, and one Par Port can control two boards. The boards synchronize between themselves over the par port bus. Sorry - I meant parallel port. Nice it only needs one! Would I need a special cable to connect the boards? Best, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sun, Jan 26, 2014 at 12:20 PM, Jon Elson el...@pico-systems.com wrote: I just don't worry about this idiot problem. If you've seen the picture of the $600 million NOAA weather satellite that fell over and got smashed in 2003, I just know that no matter HOW stupid a mistake I ever make, it will NEVER come close to that one! It cost Lockheed $150 million to fix, and the government paid the rest. (If you haven't seen it, just Google NOAA-19.) Jon Whoopsies... Mark -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sat, Jan 25, 2014 at 12:53 PM, Gene Heskett ghesk...@wdtv.com wrote: Gene, Hie thee to this divine web site, and look under Lead Screws, then PS style lead screws and PS style nuts. I've got one of these on my Z axis on my CNC saw beveler. The screws are some kind of modified acme, teflon coated. They're anti-backlash PS style nut is pretty much indestructible, and thankfully for me, idiot proof. http://www.pic-design.com/ Mark Looks neat although the spec'd accuracy is .003 at best. I grabbed the whole catalog.pdf for perusal when I am ready. I think some back repairs will happen first however. I like the idiot proof comment, cuz I'm the idiot that will test it. :) Cheers, Gene Gene, No worries. The idiot has already tested it. ;-) Mark -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sunday 26 January 2014 09:31:48 Mark Wendt did opine: On Sat, Jan 25, 2014 at 12:53 PM, Gene Heskett ghesk...@wdtv.com wrote: Gene, Hie thee to this divine web site, and look under Lead Screws, then PS style lead screws and PS style nuts. I've got one of these on my Z axis on my CNC saw beveler. The screws are some kind of modified acme, teflon coated. They're anti-backlash PS style nut is pretty much indestructible, and thankfully for me, idiot proof. http://www.pic-design.com/ Mark Looks neat although the spec'd accuracy is .003 at best. I grabbed the whole catalog.pdf for perusal when I am ready. I think some back repairs will happen first however. I like the idiot proof comment, cuz I'm the idiot that will test it. :) Cheers, Gene Gene, No worries. The idiot has already tested it. ;-) Mark Good to know, us idiots like company. ;-) -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.cl ktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Nick the Greek's Law of Life: All things considered, life is 9 to 5 against. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sun, Jan 26, 2014 at 9:32 AM, Gene Heskett ghesk...@wdtv.com wrote: On Sunday 26 January 2014 09:31:48 Mark Wendt did opine: On Sat, Jan 25, 2014 at 12:53 PM, Gene Heskett ghesk...@wdtv.com wrote: Gene, Hie thee to this divine web site, and look under Lead Screws, then PS style lead screws and PS style nuts. I've got one of these on my Z axis on my CNC saw beveler. The screws are some kind of modified acme, teflon coated. They're anti-backlash PS style nut is pretty much indestructible, and thankfully for me, idiot proof. http://www.pic-design.com/ Mark Looks neat although the spec'd accuracy is .003 at best. I grabbed the whole catalog.pdf for perusal when I am ready. I think some back repairs will happen first however. I like the idiot proof comment, cuz I'm the idiot that will test it. :) Cheers, Gene Gene, No worries. The idiot has already tested it. ;-) Mark Good to know, us idiots like company. ;-) And we're always good company. Humor-wise anyway. ;-) Mark -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sunday 26 January 2014 09:48:44 Mark Wendt did opine: On Sun, Jan 26, 2014 at 9:32 AM, Gene Heskett ghesk...@wdtv.com wrote: On Sunday 26 January 2014 09:31:48 Mark Wendt did opine: On Sat, Jan 25, 2014 at 12:53 PM, Gene Heskett ghesk...@wdtv.com wrote: Gene, Hie thee to this divine web site, and look under Lead Screws, then PS style lead screws and PS style nuts. I've got one of these on my Z axis on my CNC saw beveler. The screws are some kind of modified acme, teflon coated. They're anti-backlash PS style nut is pretty much indestructible, and thankfully for me, idiot proof. http://www.pic-design.com/ Mark Looks neat although the spec'd accuracy is .003 at best. I grabbed the whole catalog.pdf for perusal when I am ready. I think some back repairs will happen first however. I like the idiot proof comment, cuz I'm the idiot that will test it. :) Cheers, Gene Gene, No worries. The idiot has already tested it. ;-) Mark Good to know, us idiots like company. ;-) And we're always good company. Humor-wise anyway. ;-) Mark And I'm glad, otherwise we'd be insufferable. ;-) 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. The health of a democratic society may be measured by the quality of functions performed by private citizens. -- Alexis de Tocqueville A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sunday 26 January 2014 09:31:10 Mark Wendt did opine: On Sat, Jan 25, 2014 at 12:53 PM, Gene Heskett ghesk...@wdtv.com wrote: Gene, Hie thee to this divine web site, and look under Lead Screws, then PS style lead screws and PS style nuts. I've got one of these on my Z axis on my CNC saw beveler. The screws are some kind of modified acme, teflon coated. They're anti-backlash PS style nut is pretty much indestructible, and thankfully for me, idiot proof. http://www.pic-design.com/ Mark Looks neat although the spec'd accuracy is .003 at best. I grabbed the whole catalog.pdf for perusal when I am ready. I think some back repairs will happen first however. I like the idiot proof comment, cuz I'm the idiot that will test it. :) Cheers, Gene Gene, No worries. The idiot has already tested it. ;-) Good to know I have company. ;-) Mark -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.cl ktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Nick the Greek's Law of Life: All things considered, life is 9 to 5 against. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sun, Jan 26, 2014 at 9:50 AM, Gene Heskett ghesk...@wdtv.com wrote: And we're always good company. Humor-wise anyway. ;-) Mark And I'm glad, otherwise we'd be insufferable. ;-) Cheers, Gene I resemble that remark. ;-) Mark -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sunday 26 January 2014 10:13:19 Mark Wendt did opine: On Sun, Jan 26, 2014 at 9:50 AM, Gene Heskett ghesk...@wdtv.com wrote: And we're always good company. Humor-wise anyway. ;-) Mark And I'm glad, otherwise we'd be insufferable. ;-) Cheers, Gene I resemble that remark. ;-) Mark And that is something I wouldn't ever refer to you as being. Myself now, thats a different horse... 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Live within your income, even if you have to borrow to do so. -- Josh Billings A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sun, Jan 26, 2014 at 10:16 AM, Gene Heskett ghesk...@wdtv.com wrote: And I'm glad, otherwise we'd be insufferable. ;-) Cheers, Gene I resemble that remark. ;-) Mark And that is something I wouldn't ever refer to you as being. Myself now, thats a different horse... Cheers, Gene No worries Gene. My wife tells me that all the time. ;-) Mark -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
I just don't worry about this idiot problem. If you've seen the picture of the $600 million NOAA weather satellite that fell over and got smashed in 2003, I just know that no matter HOW stupid a mistake I ever make, it will NEVER come close to that one! It cost Lockheed $150 million to fix, and the government paid the rest. (If you haven't seen it, just Google NOAA-19.) Jon -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Sunday 26 January 2014 13:05:06 Jon Elson did opine: I just don't worry about this idiot problem. If you've seen the picture of the $600 million NOAA weather satellite that fell over and got smashed in 2003, I just know that no matter HOW stupid a mistake I ever make, it will NEVER come close to that one! It cost Lockheed $150 million to fix, and the government paid the rest. It cost Lockheed $150 million to fix, but the taxpayers paid the rest. There, I fixed it for you. :) (If you haven't seen it, just Google NOAA-19.) Jon -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.cl ktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. For good, return good. For evil, return justice. A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
REN NOAA-19. Neat. The building behind mine @work tests space vehicles, and, for some of the testing people can not be in the same room, in case of bits flying off (e.g., program the linear accelerator to simulate an Airiane 5 launch, and see what happens to the satellite. Don't think they've dropped anything by accident, but there's always a first time, I'd guess. Have not been through in years, but an interesting place to visit, for sure! John. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Thu, Jan 23, 2014 at 2:32 PM, Gene Heskett ghesk...@wdtv.com wrote: On Thursday 23 January 2014 14:30:41 andy pugh did opine: On 23 January 2014 15:24, Gene Heskett ghesk...@wdtv.com wrote: Agreed and amen. Unforch, the size of ball screws it takes to do that to my HF micromill, are made out of pure unobtainium. The smallest I can buy on fleabay is 12mm http://www.zappautomation.co.uk/en/miniature-ballscrews-6-12mm-diameter/ 38-r0801-ballscrew.html Or maybe look at the vendors on Aliexpress? http://www.aliexpress.com/store/group/ball-screw/609097_211302591.html as an example. I used an 8mm on my lathe/mill and despite my concerns it has been entirely adequate. http://www.cnczone.com/forums/mini_lathe/63621-mini_lathe_cross_slide_ba llscrew_solutions-2.html#post509784 Figuratively speaking Andy, you had a lot more real estate to play with than I did in my 7x12. But my real question is where the heck did you buy those screws? Thanks. Cheers, Gene Gene, Hie thee to this divine web site, and look under Lead Screws, then PS style lead screws and PS style nuts. I've got one of these on my Z axis on my CNC saw beveler. The screws are some kind of modified acme, teflon coated. They're anti-backlash PS style nut is pretty much indestructible, and thankfully for me, idiot proof. http://www.pic-design.com/ Mark -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Saturday 25 January 2014 12:50:35 Mark Wendt did opine: On Thu, Jan 23, 2014 at 2:32 PM, Gene Heskett ghesk...@wdtv.com wrote: On Thursday 23 January 2014 14:30:41 andy pugh did opine: On 23 January 2014 15:24, Gene Heskett ghesk...@wdtv.com wrote: Agreed and amen. Unforch, the size of ball screws it takes to do that to my HF micromill, are made out of pure unobtainium. The smallest I can buy on fleabay is 12mm http://www.zappautomation.co.uk/en/miniature-ballscrews-6-12mm-diame ter/ 38-r0801-ballscrew.html Or maybe look at the vendors on Aliexpress? http://www.aliexpress.com/store/group/ball-screw/609097_211302591.ht ml as an example. I used an 8mm on my lathe/mill and despite my concerns it has been entirely adequate. http://www.cnczone.com/forums/mini_lathe/63621-mini_lathe_cross_slid e_ba llscrew_solutions-2.html#post509784 Figuratively speaking Andy, you had a lot more real estate to play with than I did in my 7x12. But my real question is where the heck did you buy those screws? Thanks. Cheers, Gene Gene, Hie thee to this divine web site, and look under Lead Screws, then PS style lead screws and PS style nuts. I've got one of these on my Z axis on my CNC saw beveler. The screws are some kind of modified acme, teflon coated. They're anti-backlash PS style nut is pretty much indestructible, and thankfully for me, idiot proof. http://www.pic-design.com/ Mark Looks neat although the spec'd accuracy is .003 at best. I grabbed the whole catalog.pdf for perusal when I am ready. I think some back repairs will happen first however. I like the idiot proof comment, cuz I'm the idiot that will test it. :) 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Nothing is more admirable than the fortitude with which millionaires tolerate the disadvantages of their wealth. -- Nero Wolfe A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
Quoth Jeshua Lacock. I figured backlash was common to just about all reasonably priced mills, and I was wondering what folks did with them to compensate with CNC. FWIW, I cnc'd my WMD30LValike reasonably priced mill using the standard ACME screws thinking that backlash could be compensate for by software and/or that the backlash wouldn't annoy me. Neither was true (cutting forces push/pull the tool around the backlash envelope creating facets on the work) and I'm now in the middle of retro-fitting ballscrews ...which I should have done in the first place; Gawd knows there's enough advice on that there Internet saying 'just fit ballscrews'. -- Regards, Russell | Russell Brown | MAIL: russ...@lls.com PHONE: 01780 471800 | | Lady Lodge Systems | WWW Work: http://www.lls.com | | Peterborough, England | WWW Play: http://www.ruffle.me.uk | -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Thursday 23 January 2014 09:13:54 Russell Brown did opine: Quoth Jeshua Lacock. I figured backlash was common to just about all reasonably priced mills, and I was wondering what folks did with them to compensate with CNC. FWIW, I cnc'd my WMD30LValike reasonably priced mill using the standard ACME screws thinking that backlash could be compensate for by software and/or that the backlash wouldn't annoy me. Neither was true (cutting forces push/pull the tool around the backlash envelope creating facets on the work) and I'm now in the middle of retro-fitting ballscrews ...which I should have done in the first place; Gawd knows there's enough advice on that there Internet saying 'just fit ballscrews'. Agreed and amen. Unforch, the size of ball screws it takes to do that to my HF micromill, are made out of pure unobtainium. The smallest I can buy on fleabay is 12mm and those nuts are 3x the size on the 8mm cartridge nut and screw that I got one of from Steve (PMDX) a couple years ago. There is not room for the 12mm screws I can get from asia in the micromill. So, come warmer weather, I'll see if I can make a suitable container for the thermally molded acetal nuts per that link I reposted yesterday. 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Microsoft is not Y2K compliant: Windows 95, 98, ... and back again to 01 A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
Tex Steve (PMDX) have done a couple ball screw micromills. I go to the monthly meetings and have seen them;) I think Tex has to machine the nut a little to fit but they appear to work great. Might want to drop Steve a line again and see what they're doing if he doesn't pipe in here first. On Thu, Jan 23, 2014 at 9:24 AM, Gene Heskett ghesk...@wdtv.com wrote: On Thursday 23 January 2014 09:13:54 Russell Brown did opine: Quoth Jeshua Lacock. I figured backlash was common to just about all reasonably priced mills, and I was wondering what folks did with them to compensate with CNC. FWIW, I cnc'd my WMD30LValike reasonably priced mill using the standard ACME screws thinking that backlash could be compensate for by software and/or that the backlash wouldn't annoy me. Neither was true (cutting forces push/pull the tool around the backlash envelope creating facets on the work) and I'm now in the middle of retro-fitting ballscrews ...which I should have done in the first place; Gawd knows there's enough advice on that there Internet saying 'just fit ballscrews'. Agreed and amen. Unforch, the size of ball screws it takes to do that to my HF micromill, are made out of pure unobtainium. The smallest I can buy on fleabay is 12mm and those nuts are 3x the size on the 8mm cartridge nut and screw that I got one of from Steve (PMDX) a couple years ago. There is not room for the 12mm screws I can get from asia in the micromill. So, come warmer weather, I'll see if I can make a suitable container for the thermally molded acetal nuts per that link I reposted yesterday. 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. Microsoft is not Y2K compliant: Windows 95, 98, ... and back again to 01 A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Thursday 23 January 2014 12:43:06 Stephen Dubovsky did opine: Tex Steve (PMDX) have done a couple ball screw micromills. I go to the monthly meetings and have seen them;) I think Tex has to machine the nut a little to fit but they appear to work great. Might want to drop Steve a line again and see what they're doing if he doesn't pipe in here first. Steve sent me an 8mmx5 that I cut down and used for the X screw in my 7x12. I did not modify the nut, but made a one piece cage for it I had to pry open a little to get it wrapped around the nut, squeezed it back shut with my vice, held shut by the mounting screws, and that works well. He had fitted some slightly oversized balls, and said he could supply more at $XX per if I was interested, but a couple more attempts to get that in motion for at least 2 more have faded into the no reply from Steve category. They are only 13 long, and with my bigger tables from LMS fitted, not long enough for the X even with an extension similar to what I did in the lathe. The Y is long enough I would move the motor to the rear to keep me from bruising myself as I walk by, but the X has only enough room for about a .700 tall nut maximum, and those flange less cartridges are .750 in diameter. One might be able to polish about 30-35 thou off the sides and turn the recycle tubes to the side and find room that way. My Z drive is a turning nut design that could be adapted to a 16mm screw fairly easily, but its now a 1/2 10 tpi acme with a pair of nook nuts to adjust the backlash, and since I added ball bearings against the post to triple the bearing length of the sled casting, is now working very well, backlash might be a thou the stiction seems to be totally gone. Carving a pcb just deep enough to cut the copper without damaging the glass under it is now possible. The lack of some method to do plated holes, or a source of micro rivets to do the same is one of the two of my major impediments to doing good double sided pcb's now. The other is lack of spindle rpms at 2500 max, which is why I asked about those cheap chinese R8 equipt motors that put 12k revs in a 52mm diameter package. But I lagged off on that when somebody mentioned the sloppy run-out of that R8's connection to the motor shaft would guarantee. Anyway, if Steve is copying the mail here, I'd like 2 more of those. At the moment, I am up to my formerly x-rated things in trying to restore an HP4815A RF Vector Voltmeter, its probe is very fragile electrically, and not HP repairable since back in the '87 time frame. I just bought one, cosmetically brand new but without the probe, I have the docs, and believe myself able to repair one, or make another, but that seems nigh impossible without way better pix than there are in a pdf, where a grad student at Walla Walla University tried to make one with usable but not spectacular results. He didn't take near enough pictures, and the pcb's he did make I would have been tempted to throw away as scrap. Apparently he had no access to a real probe to disect it for ideas. I have no clue what coax was used in the probe cabling either, a real puzzle since the cabling they used was about .3 in diameter, and contained 9 coax cables in that .3, all matched to about 1/16 in length since the whole thing is a sampler with nominally 1.2ns sampling pulses. Making it work right, from scratch, probably needs a P.R. witch doctor waving a specific breed of dead chicken over it. But I'd give it a shot if a had one to disect that I couldn't repair. And I think I could repair one if I could buy a bum one. The problem? A 15 volt static charge will destroy it. See offer of 100 USD for one I can disect in the sig. TBT, ebay needs a WTB section. 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. I selected E5 ... but I didn't hear Sam the Sham and the Pharoahs! A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 23 January 2014 15:24, Gene Heskett ghesk...@wdtv.com wrote: Agreed and amen. Unforch, the size of ball screws it takes to do that to my HF micromill, are made out of pure unobtainium. The smallest I can buy on fleabay is 12mm http://www.zappautomation.co.uk/en/miniature-ballscrews-6-12mm-diameter/38-r0801-ballscrew.html Or maybe look at the vendors on Aliexpress? http://www.aliexpress.com/store/group/ball-screw/609097_211302591.html as an example. I used an 8mm on my lathe/mill and despite my concerns it has been entirely adequate. http://www.cnczone.com/forums/mini_lathe/63621-mini_lathe_cross_slide_ballscrew_solutions-2.html#post509784 -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Thursday 23 January 2014 14:30:41 andy pugh did opine: On 23 January 2014 15:24, Gene Heskett ghesk...@wdtv.com wrote: Agreed and amen. Unforch, the size of ball screws it takes to do that to my HF micromill, are made out of pure unobtainium. The smallest I can buy on fleabay is 12mm http://www.zappautomation.co.uk/en/miniature-ballscrews-6-12mm-diameter/ 38-r0801-ballscrew.html Or maybe look at the vendors on Aliexpress? http://www.aliexpress.com/store/group/ball-screw/609097_211302591.html as an example. I used an 8mm on my lathe/mill and despite my concerns it has been entirely adequate. http://www.cnczone.com/forums/mini_lathe/63621-mini_lathe_cross_slide_ba llscrew_solutions-2.html#post509784 Figuratively speaking Andy, you had a lot more real estate to play with than I did in my 7x12. But my real question is where the heck did you buy those screws? Thanks. 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. My mind can never know my body, although it has become quite friendly with my legs. -- Woody Allen, on Epistemology A pen in the hand of this president is far more dangerous than 200 million guns in the hands of law-abiding citizens. -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 01/21/2014 11:10 PM, Jeshua Lacock wrote: Greetings, I am the proud new owner of an Bolton Tools AT750 combination lathe and mill see here: http://3DTOPO.com/Bolton-AT750.jpg I am super impressed with the machine so far. Ugh, we have a somewhat similar machine at work, it is pretty awful. I wish you'd asked here before buying it. there are so many limitations in workspace, etc. it is a real pain to do anything bigger than a thimble in size. Will you be using the original leadscrews? They have a lot of backlash. If you tighten a vise on the table it binds the Y travel. The Z mechanism is really laughable, backlash between the quill and pinion is probably several mm. I did a square-column mill some time ago and replaced the Z rack and pinion with an eBay ballscrew. The X and Y screws on that machine were quite tolerable. The Pico USC will be fine, but depending on the drivers used, may not be necessary. If you use Gecko drives with the 10 X microstepping, the USC starts to look good due to the required step rate. The Gecko drivers are VERY good. Jon -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Jan 22, 2014, at 10:25 AM, Jon Elson el...@pico-systems.com wrote: On 01/21/2014 11:10 PM, Jeshua Lacock wrote: Greetings, I am the proud new owner of an Bolton Tools AT750 combination lathe and mill see here: http://3DTOPO.com/Bolton-AT750.jpg I am super impressed with the machine so far. Ugh, we have a somewhat similar machine at work, it is pretty awful. I wish you'd asked here before buying it. there are so many limitations in workspace, etc. it is a real pain to do anything bigger than a thimble in size. Hi Jon, Hmmm, what machine are you referring to? I just checked and I have full 8x12x3 inches of travel for the mill. I have been using it to lathe hardened steel shafts and has been turning like a dream so far. Haven't yet milled anything though. Will you be using the original leadscrews? They have a lot of backlash. If you tighten a vise on the table it binds the Y travel. The Z mechanism is really laughable, backlash between the quill and pinion is probably several mm. I did a square-column mill some time ago and replaced the Z rack and pinion with an eBay ballscrew. The X and Y screws on that machine were quite tolerable. I figured backlash was common to just about all reasonably priced mills, and I was wondering what folks did with them to compensate with CNC. I just checked the backlash on my Z and with the micro-adjust knob I can not feel any discernible backlash. I certainly can feel backlash on the Z quick feed and on the X and Y leadscrews. Eventually I would like to replace them with anti-backlash ballscrews. I would like to get the machine up and running first if I can expect reasonable results from it. I think I read somewhere a while back someone compensated for the backlash in software and virtually eliminated the problem without having to replace the leadscrews. Speaking of anti-backlash ballscrews, have you guys seen this printable: http://www.thingiverse.com/thing:125529 I have printed them out - and they work amazing! On a 3/4 shaft it takes over 100 pounds of force before it slips - and you can pretty much make it tight as you like within reason. NIce thing is it just slips too - no damage when overloaded. It is also configureable for travel per revolution. The Pico USC will be fine, but depending on the drivers used, may not be necessary. If you use Gecko drives with the 10 X microstepping, the USC starts to look good due to the required step rate. The Gecko drivers are VERY good. Yeah I was planning on going with Gecko. Good to know, thanks Jon! I guess the biggest uncertainty right now is how much torque I might need on a machine like this. I was guessing something like the first stepper listed here: http://www.kelinginc.net/NEMA23Motor.html Cheers, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Wednesday 22 January 2014 19:14:34 Jeshua Lacock did opine: On Jan 22, 2014, at 10:25 AM, Jon Elson el...@pico-systems.com wrote: On 01/21/2014 11:10 PM, Jeshua Lacock wrote: Greetings, I am the proud new owner of an Bolton Tools AT750 combination lathe and mill see here: http://3DTOPO.com/Bolton-AT750.jpg I am super impressed with the machine so far. Ugh, we have a somewhat similar machine at work, it is pretty awful. I wish you'd asked here before buying it. there are so many limitations in workspace, etc. it is a real pain to do anything bigger than a thimble in size. Hi Jon, Hmmm, what machine are you referring to? I just checked and I have full 8x12x3 inches of travel for the mill. I have been using it to lathe hardened steel shafts and has been turning like a dream so far. Haven't yet milled anything though. Will you be using the original leadscrews? They have a lot of backlash. If you tighten a vise on the table it binds the Y travel. The Z mechanism is really laughable, backlash between the quill and pinion is probably several mm. I did a square-column mill some time ago and replaced the Z rack and pinion with an eBay ballscrew. The X and Y screws on that machine were quite tolerable. I figured backlash was common to just about all reasonably priced mills, and I was wondering what folks did with them to compensate with CNC. I just checked the backlash on my Z and with the micro-adjust knob I can not feel any discernible backlash. I certainly can feel backlash on the Z quick feed and on the X and Y leadscrews. Eventually I would like to replace them with anti-backlash ballscrews. I would like to get the machine up and running first if I can expect reasonable results from it. I think I read somewhere a while back someone compensated for the backlash in software and virtually eliminated the problem without having to replace the leadscrews. Speaking of anti-backlash ballscrews, have you guys seen this printable: http://www.thingiverse.com/thing:125529 That is a cute idea, but you likely have zero real repeatability. And that IS the name of this game. The only place that would be usable would be with real servos getting feedback from a linear scale encoder driven by the table you are moving. That of course adds 300 to 500 USD per axis. There is a link for how to make nuts that fit your screws, usually with less than a thou of backlash, using acetal/delrin for the nut material. http://bbs.homeshopmachinist.net/threads/43645-Making-Acetal-leadscrew- nuts-the-easy-way These have the advantage of less friction than a std nut under load, very low wear rate and virtually zero backlash when molded around your existing screws. I don't know as I would try and make a half nut assembly that way, but a full nut on the Z with my ball screw and nut on my lathe has not been a problem as I just use the keyboard to move it. I have the stuff on hand, and will fit at least the X/Y on my small mill come warm weather again. They are pushing 15 yo, and are very close to shot. I have printed them out - and they work amazing! On a 3/4 shaft it takes over 100 pounds of force before it slips - and you can pretty much make it tight as you like within reason. NIce thing is it just slips too - no damage when overloaded. It is also configureable for travel per revolution. The Pico USC will be fine, but depending on the drivers used, may not be necessary. If you use Gecko drives with the 10 X microstepping, the USC starts to look good due to the required step rate. The Gecko drivers are VERY good. Yeah I was planning on going with Gecko. Good to know, thanks Jon! I guess the biggest uncertainty right now is how much torque I might need on a machine like this. I was guessing something like the first stepper listed here: http://www.kelinginc.net/NEMA23Motor.html Cheers, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.cl ktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users 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) Genes Web page http://geneslinuxbox.net:6309/gene NOTICE: Will pay 100 USD for an HP-4815A defective but complete probe assembly. If you just try long enough and hard enough, you can always manage to boot yourself in the
Re: [Emc-users] Conversion Suggesions?
On Jan 22, 2014, at 5:39 PM, Gene Heskett ghesk...@wdtv.com wrote: On Wednesday 22 January 2014 19:14:34 Jeshua Lacock did opine: Speaking of anti-backlash ballscrews, have you guys seen this printable: http://www.thingiverse.com/thing:125529 That is a cute idea, but you likely have zero real repeatability. And that IS the name of this game. The only place that would be usable would be with real servos getting feedback from a linear scale encoder driven by the table you are moving. That of course adds 300 to 500 USD per axis. Hi Gene, Anecdotally so far repeatability seems perfect. You can see the virtual threads marked (by a little oil on the rod). As far as I can tell unless you exceed the pressure and make it slip - it stays perfectly in the virtual threads... In any event I am going to do some tests with a dial indicator that I can share here if there is any interest. Also, I am going to place a level across a set of them, place a laser pointer on the level and mark the point on the wall. After moving to and from that point - any angular difference will be greatly exaggerated and should be completely obvious. Cheers, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On Jan 22, 2014, at 5:39 PM, Gene Heskett ghesk...@wdtv.com wrote: There is a link for how to make nuts that fit your screws, usually with less than a thou of backlash, using acetal/delrin for the nut material. http://bbs.homeshopmachinist.net/threads/43645-Making-Acetal-leadscrew- nuts-the-easy-way These have the advantage of less friction than a std nut under load, very low wear rate and virtually zero backlash when molded around your existing screws. I don't know as I would try and make a half nut assembly that way, but a full nut on the Z with my ball screw and nut on my lathe has not been a problem as I just use the keyboard to move it. Nice! Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
i did this with my mill and am truly impressed with its repeatability. i think you can give up on software compensation for backlash though with your factory screws . simply make the nuts and go from there it will save much time and effort jeremy youngs -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 01/22/2014 05:58 PM, Jeshua Lacock wrote: Hmmm, what machine are you referring to? I just checked and I have full 8x12x3 inches of travel for the mill. Well, yours seems to have the adjustable head height, ours doesn't. It also sounds like yours may be overall a larger machine that ours. I have been using it to lathe hardened steel shafts and has been turning like a dream so far. Haven't yet milled anything though. Yes, it seemed it made a better lathe than a mill for us, too. But, since I have a Bridgeport mill and now a 3500 Lb. Sheldon lathe, maybe I'm just prejudiced. I figured backlash was common to just about all reasonably priced mills, and I was wondering what folks did with them to compensate with CNC. The X and Y on my 150 Lb minimill was surprisingly low. See http://pico-systems.com/minimill.html I usually only use it at shows to demo my CNC hardware and LinuxCNC, so it is lightly used, but backlash is still just a couple thousandths of an inch. I just checked the backlash on my Z and with the micro-adjust knob I can not feel any discernible backlash. I certainly can feel backlash on the Z quick feed and on the X and Y leadscrews. Well, that's where the backlash is, so twiddling the fine feed knob is misleading you. What you need to do is put a dial test indicator on the quill and push up and down and see how much the indicator moves. Eventually I would like to replace them with anti-backlash ballscrews. I would like to get the machine up and running first if I can expect reasonable results from it. I think I read somewhere a while back someone compensated for the backlash in software and virtually eliminated the problem without having to replace the leadscrews. No, that is a fantasy. For X-Y positioning work, ONLY, you can sort of eliminate backlash, but the fact is the screws don't constrain the table, so cutting forces can move it over the range of the backlash. Even without cutting forces, the motors would have to move at infinite speed to get from one side of the backlash to the other to create correct motion. So, in my opinion, backlash compensation is a fantasy that doesn't work in actual practice. Speaking of anti-backlash ballscrews, have you guys seen this printable: http://www.thingiverse.com/thing:125529 Threadless? Then, what gives you predictable movement? Nothing, I gather. So, you can move left or right, but without a measuring device on the table, you have no idea how much it has moved. Yeah I was planning on going with Gecko. Good to know, thanks Jon! I guess the biggest uncertainty right now is how much torque I might need on a machine like this. I was guessing something like the first stepper listed here: http://www.kelinginc.net/NEMA23Motor.html 570 Oz-In is a lot, but of course, that is only at standstill. But, they should do fine, especially with a belt reduction. 5 A will require the big Gecko 203 drive. For that, you might consider Gecko's servo motors and our PWM servo drives. The price would be pretty close, and the performance will be a lot better. I can advise on specific models, encoders, etc. Jon -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Conversion Suggesions?
On 01/22/2014 08:41 PM, Jon Elson wrote: 570 Oz-In is a lot, but of course, that is only at standstill. But, they should do fine, especially with a belt reduction. 5 A will require the big Gecko 203 drive. For that, you might consider Gecko's servo motors and our PWM servo drives. The price would be pretty close, and the performance will be a lot better. I can advise on specific models, encoders, etc. Sorry, I screwed that up a LOT. Gecko does not sell motors, of course! I meant Keling, which is now http://www.automationtechnologiesinc.com/ they have a very affordable size 23 brushless motor, the KL23BLS115, good for 180 Oz-In (but that is a RUNNING rating, not a standstill rating). $52 without encoder. You can get a good encoder with index from Digi-Key for about $38. I have found this motor to work quite well with my servo amps and our Universal PWM Controller. Jon -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Conversion Suggesions?
Greetings, I am the proud new owner of an Bolton Tools AT750 combination lathe and mill see here: http://3DTOPO.com/Bolton-AT750.jpg I am super impressed with the machine so far. I am open to any suggestions for converting the machine to full LinuxCNC. I was thinking for budget and simplicity to go with steppers with perhaps Pico System's Universal Stepper Controller. How much torque is recommend? To control the spindles, should I get VFCs? Any recommended to work well with LinuxCNC? I think I will gear down the steppers at least 2:1 if not more. Recommendations would be great here too! Thanks a Zillion! Cheers, Jeshua Lacock Founder/Engineer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431iu=/4140/ostg.clktrk ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
