Re: [Emc-users] Cutting involute spur gears with 4 axis?

To Andy's point, it will work, it's just a matter of lots and lots of passes. For instance, see http://neme-s.org/Shaper%20Books/Michael_Moore/shaper%20gear%20cut.pdf for how it can be done on a metal shaper with a rack form tool. There is no need for an undercut. The same basic method

Re: [Emc-users] How to test original Bridgeport Series I CNC Mill

Igor, I have a Boss 5 still running the original control. Assuming you're feeding it 3 phase power, you press the E-stop override button (like you've done) and the light should go out. Then make sure that you're in setup mode on the rotary switch at the top right of the panel. Then you

Re: [Emc-users] How to test original Bridgeport Series I CNC Mill

N.C., Some research I've done tells me that most people just set the varispeed head to ~3300 RPM and use the VFD for speed control, but I'm trying to go all out and have total control. They even run it to 5500 RPM, but I'm not sure I want to strain the spindle bearings that much. Let me give

[Emc-users] Machine Tuning, Configuring Rigid Tapping, and Automatic Spindle Speed Control

I've gotten my Bridgeport BOSS 5 mill running fairly well. I'm using the Pico Systems USC board and LinuxCNC 2.4.6. First off, I observed that the default acceleration values in the Pico-Systems sample configs were too high for reliable operation of the axes on the BOSS. Particularly, the Z

Re: [Emc-users] Machine Tuning, Configuring Rigid Tapping, and Automatic Spindle Speed Control

With an open-loop system, there is no measurement available other than your ears or a dial indicator. As long as it doesn't lose steps, you are OK. When first starting to machine actual work, watch out for missed steps. Thanks Jon! That's what I was afraid you'd say ... The default

Re: [Emc-users] Bridgeport Stepper Inductance

I've got an old CNC Bridgeport Vertical Mill I'm looking to upgrade. I'm fairly sure it is a BOSS 5. It does have stepper motors on in, but haven't had a chance to check whether they are Superiors or Sigmas motors yet. Except for the motors, it looks exactly like this:

Re: [Emc-users] Emc-users Digest, Vol 76, Issue 124

Anyway, I've got some Parker OEM650 stepper drives on hand and would like to use those for my retrofit, but they will only accommodate phase inductances of 1 - 10 mH. Does anyone know what the inductances are for the Superiors and Sigmas? I can't answer this one with certainty, but

Re: [Emc-users] Stepper Inductance

Thank you for the effort... I guess I will have to put off this project a bit longer. At least until I can purchase some suitable drives. Well, if the drives are adequately protected, which I'm sure they are, it wouldn't hurt to hook them up and try ...

Re: [Emc-users] Hold-down straps

Andy, If you are familiar with metal shapers, these are commonly used work holders to enable planing the entire top surface of a workpiece. They are essentially a four sided shape. The jaw side and the bottom side are square, with the workpiece side angled at about 2 degrees from the jaw

Re: [Emc-users] Shapers

I have an Atlas 7 shaper -- far superior to my 10 lathe. It's almost exclusively made of cast iron, and quite sturdy. I enjoy using it to square up workpieces as it is easy to use and sometimes programming MDI codes in the mill just isn't worth the trouble for odd jobs. I have been working

Re: [Emc-users] Crowdsourced mass CNC produced private weapons

Igor, From a technical standpoint only (I'll leave the politics out of this), the AR-15 lower receiver (which he successfully printed in ABS plastic - see www.defensedistributed.com) is the portion which houses the fire control group. Most are made of 7075 Al forgings, or CNC machined from

Re: [Emc-users] Knee mill w/ encoder on knee

Sven, How did you fit the knee motor? I'm considering it myself but looking for some more details. I figure I'd have to mount knee limits on both ends of travel, and figure out how to fix the motor. Matt -- Everyone

Re: [Emc-users] Noise Problems with Pico Systems USC and Gecko 203V Stepper Drives

. Same with my > Amplifiers. I apply every technique I know and they now work the first > time. Before it would take days to debug. > > [image: poza-China-roboti-1280x620.jpg] > > On Thu, Aug 27, 2020 at 6:25 PM Matthew Herd wrote: > >> Hi Chris, >> >>

Re: [Emc-users] Mist Coolant

I use one of the soluble oils in my mister, at whatever the maximum mix ratio is. I don’t worry about rust too much, generally I try to use the minimum quantity to avoid fogging the shop. Although I am about to try a Fog Buster (once I finish installing it) to see if it works better than the

Re: [Emc-users] Mist Coolant

I should note that while chips are found far from my machine as well, the mister barely leaves any liquid behind when properly adjusted. The only thing I don’t like about the old Bijur setup is that it does tend to vaporize some of it. But the Fog Buster is supposed to minimize that. When

[Emc-users] Noise Problems with Pico Systems USC and Gecko 203V Stepper Drives

I spent some time the week before last investigating the noise issue that I’ve been having on my Bridgeport BOSS mill. The system architecture involves a single phase 240V input, which powers a VFD for the 2HP spindle motor, a 120V step down transformer to power some devices on the machine

Re: [Emc-users] Noise Problems with Pico Systems USC and Gecko 203V Stepper Drives

hen ferrite > cores on the wires help but they no nothing for 120 Hz. > > > > On Thu, Aug 27, 2020 at 10:00 AM Matthew Herd wrote: > >> I spent some time the week before last investigating the noise issue that >> I’ve been having on my Bridgeport BOSS mill. The sy

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

of these other issues, but if that’s the way it’s got to be, then so be it. > On Jul 21, 2020, at 1:27 PM, andy pugh wrote: > > On Tue, 21 Jul 2020 at 18:16, Matthew Herd wrote: > >> Thanks for the insights. I suspected something along these lines, even if I >> might have o

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

On a related note, I’ve noticed that the G-Code reference for G33 and G33.1 refers you to the integrators manual, but there’s little documentation on spindle synchronized motion. I’d be willing to add a section based on what I learn from this experience. It might be helpful to make sure

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

? Your spindle > seems to take a long time to reverse, so at high speeds you may be hitting > this limit. > > Best, > Rob > <https://github.com/LinuxCNC/linuxcnc/blob/master/src/emc/tp/tc.c#L856> > > On Tue, Jul 21, 2020 at 11:18 AM Matthew Herd wrote: > >&g

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

On Monday, July 20, 2020, 10:00:14 AM CDT, Matthew Herd > wrote: > > Thanks for the input Jon, Andy, and Scott. Unfortunately, it already counts > positive in the clockwise direction, so that’s not it. I’ll go through Jon’s > list of suggestions step by step when I get ba

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

respond to MDI commands. I had to go to manual mode and click the spindle stop button to get it to respond. Thanks! Matt > On Jul 20, 2020, at 12:47 PM, Jon Elson wrote: > > On 07/20/2020 10:51 AM, Matthew Herd wrote: >> Hi Andy, >> >> "But does it also count n

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

ris Albertson wrote: > > On Sat, Aug 1, 2020 at 11:40 AM Matthew Herd wrote: > >> Thanks Gene, I hope you’re well also. I disconnected that grounding wire, >> no difference observed in the ppmc.0.encoder.03.index behavior. The noise >> seems the same both when

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

need it) so I can't scope anything until tomorrow. Is it possible there's a pull-up resistor missing? Thanks, Matt On Fri, Jul 24, 2020 at 6:38 AM Matthew Herd wrote: > Thanks Andy, I’ll give the documentation a thorough read through and see > how it might be best incorporated. > >

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

seem to be both long and short, but I’d guess they’re about 80-90% true. Not at all what I’d expect, even with noise. Matt > On Aug 1, 2020, at 1:19 PM, Gene Heskett wrote: > > On Saturday 01 August 2020 12:10:55 Matthew Herd wrote: > >> I'm still having issues with the rigid tap

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

Aug 2020 at 14:03, Matthew Herd wrote: >>> I am guessing that the source of the trouble is probably the VFD, as >>> 80kHz seems like a plausible base frequency for driving an AC motor. >> >> Add an input filter to the VFD. They are not expensive. Look on eBay >>

Re: [Emc-users] Default Path Blending

I just ran into this issue (again). I did some searching and found that LinuxCNC defaults to G64 with no P value specified as of a certain version (2.7?). That caused some issues for me over the years, so I’d been manually specifying either G61 (exact path mode) or specifying G64 P0.001 (or

Re: [Emc-users] Default Path Blending

that value. See here: https://forum.linuxcnc.org/plasmac/37612-cut-path-not-following-gcode > On Jul 31, 2020, at 9:25 AM, Matthew Herd wrote: > > I just ran into this issue (again). I did some searching and found that > LinuxCNC defaults to G64 with no P value specified as of a c

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

value in isolating power and logic grounds or isolating either one from the machine. > On Aug 2, 2020, at 11:34 AM, Jon Elson wrote: > > On 08/01/2020 01:37 PM, Matthew Herd wrote: >> Thanks Gene, I hope you’re well also. I disconnected that grounding wire, >> n

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

Yes, I figured as much, but I figure it’s a problem that should be solved and the noise looks like a contributing factor. I am guessing that the source of the trouble is probably the VFD, as 80kHz seems like a plausible base frequency for driving an AC motor. Only the USC should be

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

Thanks Andy, I’ll give the documentation a thorough read through and see how it might be best incorporated. > On Jul 23, 2020, at 3:07 PM, andy pugh wrote: > > On Thu, 23 Jul 2020 at 17:06, Jon Elson wrote: > >>> Who is in charge of the integrator’s manual? I’d like to investigate >>>

Re: [Emc-users] Little gear I'm cutting. Thought it may interest people.

Hi Andy, Let’s say I were to purchase a hob like this one:

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

op 5 VFD parameter changes explained >> >> Chris Vavra >> >> Learning Objectives Setting five parameters can take care of most VFD >> programming. Consider VFD control met... >> >> >> >> >> >> >> >> &

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

I should also note I made an error in my revolutions calculation. It should be RPM / 2 / 60 sec * deceleration time = revolutions to stop, assuming linear deceleration. That’s probably the default for most drives. For 560 RPM, that comes out to 2.8 revolutions. So my observations at 2.9

Re: [Emc-users] Little gear I'm cutting. Thought it may interest people.

That’s a fascinating idea. I was pondering CNC’ing my shaper, but a fourth axis would be much easier. Even if you don’t have a conical tool bit. Albeit the surface finish might be a little rougher, it should work well enough for most applications. > On Jul 23, 2020, at 6:20 AM, andy pugh

Re: [Emc-users] Little gear I'm cutting. Thought it may interest people.

Great work! Seems like a nice way to maek a gear if you’re patient. > On Jul 22, 2020, at 10:39 PM, andrew beck wrote: > > Hey everyone just a quick video here. Might interest people. > > https://youtu.be/3u1bZxd-KCk > > Regards > > Andrew > >

Re: [Emc-users] Little gear I'm cutting. Thought it may interest people.

Hi Andy, In your second video you mention that the step generator for the rotary axis is tied to the spindle motion. What HAL pins need to be connected? Do you have an interface with a selectable ratio or do you just change the ratio in the HAL file? Matt > On Jul 24, 2020, at 5:17 PM,

Re: [Emc-users] Cutting plastic film

Perhaps a drag knife? https://www.amazon.com/Dog-River-Tools-Knife-Cutter/dp/B085BF98Z9/ref=asc_df_B085BF98Z9/?tag=bingshoppinga-20=df0===oe=cpla-4584001427192206=1

Re: [Emc-users] Cutting plastic film

I did some reading. Here’s a much cheaper one.

[Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

Hi all, I made my first attempt at using spindle synchronized motion for a rigid tapping operation on my Bridgeport BOSS mill today and it didn’t go as planned. It has a spindle encoder and a Pico USC board. I can use the spindle to read encoder counts and spindle position (I already use

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

I had a suspicion that the very long deceleration times might have exposed a bug in the software. I doubt I’m exceeding soft limits, but I’ll run some more tests when I play with it next. > On Jul 20, 2020, at 8:30 PM, Jon Elson wrote: > > On 07/20/2020 07:04 PM, Gene Heskett wrote: >> >> I

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

son wrote: > >> On 07/20/2020 05:27 PM, Matthew Herd wrote: >>> Working through Jon’s suggestions, the answers to his questions are >>> as follows. Also, I’m running version 2.7.11 if that helps. No >>> internet in my shop means it gets infrequent updates. >&

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

Ahh, so I do use limit switches and a homing routine. So it’s homing to the same position (plus or minus a few thousandths or so). > On Jul 21, 2020, at 11:07 AM, Jon Elson wrote: > > On 07/21/2020 04:20 AM, andy pugh wrote: >> On Tue, 21 Jul 2020 at 10:18, andy pugh wrote: >> >>> We are

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

The ppmc.0.encoder.03.index pin is something I can halscope easily enough. I was having a little trouble getting used to the halscope interface, and without a signal that I know will repeat every revolution, it’s hard to be sure you’re not just missing it with your scope parameters. I’m sure

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

It appears to increment/decrement by exactly 1 for each revolution, but I didn’t put a degree wheel on the spindle to be sure of my rotation measurement. > On Jul 20, 2020, at 11:58 AM, andy pugh wrote: > > On Mon, 20 Jul 2020 at 16:53, Matthew Herd wrote: > >> "

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

Thanks for the input Jon, Andy, and Scott. Unfortunately, it already counts positive in the clockwise direction, so that’s not it. I’ll go through Jon’s list of suggestions step by step when I get back to the machine in a few days and let you know how it goes. I also realized that a spindle

Re: [Emc-users] Problem with Rigid Tapping on USC Equipped Bridgeport

Hi Andy, "But does it also count negative in reverse?" Yes, counts go up and down, depending on the direction I turn the spindle, either manually or under power. Matt ___ Emc-users mailing list Emc-users@lists.sourceforge.net

Re: [Emc-users] Question Regarding Selective Assignments in HAL

. Manual link below for reference: http://linuxcnc.org/docs/devel/html/man/man9/spindle.9.html <http://linuxcnc.org/docs/devel/html/man/man9/spindle.9.html> Matt > On Dec 12, 2020, at 9:55 PM, Jon Elson wrote: > > On 12/12/2020 08:12 PM, Matthew Herd wrote: >> Whic

Re: [Emc-users] Question Regarding Selective Assignments in HAL

Thanks Andy, I’ll play with HAL today and see what happens. Jon, you’re using the motion pins (spindle.0.x) while the "Spindle" component also has the same naming format and some of the same names. It took me awhile to sort it out. See this forum thread for clarification:

Re: [Emc-users] Question Regarding Selective Assignments in HAL

that just hasn’t happened yet? Matt > On Dec 15, 2020, at 8:18 AM, andy pugh wrote: > > On Tue, 15 Dec 2020 at 11:47, Matthew Herd wrote: > >> I might take a look at modifying the component. I’m comfortable with C, so >> perhaps I can work it out pretty quickly. > >

Re: [Emc-users] Question Regarding Selective Assignments in HAL

iff-667b45662b7da3b4712ad1ead290305621b11f4d0e9569f095879d1c9eff5525> I was browsing Git. > On Dec 15, 2020, at 8:50 AM, andy pugh wrote: > > On Tue, 15 Dec 2020 at 13:47, Matthew Herd wrote: >> >> I see gearchange was rewritten but then the rewrite wasn’t put into the >> final release. > > Where are you

Re: [Emc-users] Question Regarding Selective Assignments in HAL

Ahh, very interesting. For the time being I’ll work on my own component and see what I find. Thanks Andy! > On Dec 15, 2020, at 9:12 AM, andy pugh wrote: > > On Tue, 15 Dec 2020 at 13:57, Matthew Herd wrote: >> >> https://github.com/Lin

Re: [Emc-users] Question Regarding Selective Assignments in HAL

ndicates the reverse of the actual arrangement. I hope that makes sense. > On Dec 15, 2020, at 9:16 AM, Matthew Herd wrote: > > Ahh, very interesting. For the time being I’ll work on my own component and > see what I find. Thanks Andy! > >> On Dec 15, 2020, at 9:12 AM, and

Re: [Emc-users] Tooling availability questions

I’ll second Boston Gear. I was able to get change gears for my Atlas lathe from them as off the shelf parts. > On Dec 17, 2020, at 2:29 PM, jrmitchellj wrote: > > Are you bent on making them yourself, or would you consider purchasing? > > Check out Boston gear (bostongear,com) or Martin gear

[Emc-users] Question Regarding Selective Assignments in HAL

Hi All, I’m sure there’s a simple answer for my question, but I haven’t been able to figure it out. Currently the configuration for the spindle forward and reverse outputs is as follows: # connect spindle fwd/rev to I/O controller net SpindleFwd <= ppmc.2.dout.00.out net SpindleFwd =>

Re: [Emc-users] Question Regarding Selective Assignments in HAL

ll run in reverse without any other input. > On Dec 12, 2020, at 11:53 AM, Jon Elson wrote: > > On 12/12/2020 08:12 AM, Matthew Herd wrote: >> Hi All, >> >> I’m sure there’s a simple answer for my question, but I haven’t been able to >> figure it out. Currently th

Re: [Emc-users] Question Regarding Selective Assignments in HAL

the primary goal is getting the machine running again. Matt > On Dec 15, 2020, at 6:23 AM, andy pugh wrote: > > On Tue, 15 Dec 2020 at 01:42, Matthew Herd wrote: >> >> I’ve spent some time playing with the spindle component. It seems to have a >> numbe

Re: [Emc-users] Checking vfd hookup question?

wdershelt (Author) > > If we desire respect for the law, we must first make the law respectable. > > - Louis D. Brandeis > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > ___ > > Emc-users mail

Re: [Emc-users] Checking vfd hookup question?

In my research on resistor sizing, I heard reports that Haas uses stove elements for their braking resistors. On factory machines, no less. Of course that’s second hand, so I can’t say it’s true. > On Dec 22, 2020, at 7:15 PM, Chris Albertson > wrote: > > I knew some one who found he could

Re: [Emc-users] Question Regarding Selective Assignments in HAL

I’ve spent some time playing with the spindle component. It seems to have a number of bugs, beyond the issue with the documentation. Somehow a negative speed command multiplied by a negative gear ratio yields a negative speed. And the forward and reverse pins track the commanded speed, not

Re: [Emc-users] limit switch configuration on lathe in linxcnc (2.7)

I think the question you’re asking is how to use the limit switch as a home input. On my bridgeport mill, a single limit switch trips on the min and max limits. I also use this for home. I do this by assigning the same hardware pin to axis.0.home-sw-in (or axis.1, axis.2, etc)

Re: [Emc-users] Rpi Pico

Agreed. It looks promising, but no more so than a "Blue Pill" or similar boards. Also, what voltages does it operate on? I wasn’t able to find that in the literature but I didn’t dig into their documentation that deeply. Nonetheless, it seems like info that should be part of the specs. >

Re: [Emc-users] Rpi Pico

Just looked again and can confirm it’s in one of their spec listings (1.8-5.5V), but not in another one. > On Jan 21, 2021, at 11:41 AM, Dave Cole wrote: > > It has some interesting sub processors to handle I/O. Reminds me of the sub > processors on the Beagle Board Black. >

Re: [Emc-users] lathe paths with linux cnc and CAD software

t; > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/

Re: [Emc-users] Spindle Control

1. VFD w/ 3 phase 2hp motor on a mill 2. Planned implementation of hybrid VFD and vari-speed controlled speed, but currently set manually via the vari-speed head. > On Jun 13, 2021, at 3:49 PM, John Dammeyer wrote: > > Quick little survey on what everyone has on their machine for spindle

Re: [Emc-users] Advice on Tuning Servo System

Gene, that’s very odd behavior. My machine isn’t homed (still just working on basic tuning) when I’m doing my tests and your behavior sounds similar. I wonder if we could determine the reason for this difference in behavior. > On Jun 30, 2021, at 9:25 PM, Gene Heskett wrote: > > On

Re: [Emc-users] Advice on Tuning Servo System

t 8:55 AM, Matthew Herd wrote: > > Ok I thought so. I just want to confirm that setting all PID parameters to 0 > will allow the velocity commands to pass through. I’d think I’d need P=1 or > something along those lines? > > I hope to try this one evening this week if

Re: [Emc-users] Advice on Tuning Servo System

; DIRHOLD= 1000 > STEPLEN= 2000 > STEPSPACE = 1000 > STEP_SCALE = 15000.0 > MIN_LIMIT = -0.04 > MAX_LIMIT = 13.5 > # tested backlash at 4.2" from home 14MAR2020 > BACKLASH = 0.0189 > > > HOME_OFFSET = -0.1 > #HOME_SEARCH_VEL = -0.8 > #HOME_LATCH_V

Re: [Emc-users] Advice on Tuning Servo System

Ahh, thanks Les. I like the simulated encoder option. The best part is it’s as easy as flipping a switch. Unfortunately wiring up the drive is a bit more of an ordeal, although I do have a bunch of steppers and drives as they were what was replaced. If I get desperate I’ll go that route.

Re: [Emc-users] Advice on Tuning Servo System

NITS = inch ANGULAR_UNITS = degree DEFAULT_LINEAR_VELOCITY = 1 MAX_LINEAR_VELOCITY = 8.33 DEFAULT_LINEAR_ACCELERATION = 15.0 MAX_LINEAR_ACCELERATION = 20.0 > On Jun 27, 2021, at 8:07 PM, Matthew Herd wrote: > > Hi All, > > It’s been a long time, but I finally go

Re: [Emc-users] Advice on Tuning Servo System

ives configured? Is the step/direction > commanding position to the drives or velocity? If you are using position (the > most common with step/dir) all of your PID tuning should be done in the > drive. Do you have feedback to LCNC from the encoders? > > Les > > On 28/06/2

Re: [Emc-users] Advice on Tuning Servo System

gt;> MAX_VELOCITY = 8.33 >> MAX_ACCELERATION = 10.0 > > Your velocity looks way out. That's 500IPM. While 1kW servos should be able > to run the machine this fast with the right gearing I can't see it lasting > very long. > > Les > > &g

Re: [Emc-users] Advice on Tuning Servo System

t; of an oddity. It has a very large diameter and fairly fine pitch. It's >> lubricated from the central lube system. The combination of large >> diameter and thick way oil means you get a lot of viscous friction >> losses in the nut. If I remember correctly I limited mine to som

Re: [Emc-users] >3-axis CAM Development

> Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Matthew Herd Email: herd.m...@gmail.com Cell: 610-608-8930 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] Advice on Tuning Servo System

Hi All, It’s been a long time, but I finally got my servos mounted on my mill today. While attemping to tune them I encountered great frustration. I have 1kW Yaskawa clone AC servo motors and drives that accept step and direction signals and provide encoder feedback which is currently

Re: [Emc-users] Advice on Tuning Servo System

Ok I thought so. I just want to confirm that setting all PID parameters to 0 will allow the velocity commands to pass through. I’d think I’d need P=1 or something along those lines? I hope to try this one evening this week if I can get to the shop. Thanks again! Matthew Herd herd.m

Re: [Emc-users] Advice on Tuning Servo System

fig. It creates a stepper config > without any PID. You can basically cut and paste from that to your hal files. > The drives themselves are doing the PID work in your setup. > > Les > > On 28/06/2021 22:31, Matthew Herd wrote: >> Hi John and Les, >> >>

Re: [Emc-users] Advice on Tuning Servo System

Ok I thought so. I just want to confirm that setting all PID parameters to 0 will allow the velocity commands to pass through. I’d think I’d need P=1 or something along those lines? I hope to try this one evening this week if I can get to the shop. Matthew Herd herd.m...@gmail.com 610-608

Re: [Emc-users] Can't find the PP. Where is lspci or equiv ?

I installed the LinuxCNC 2.8.0 Debian 10 Buster PREEMPT-RT ISO a few months ago direct from the downloads page (http://linuxcnc.org/downloads/ ). I can confirm that lspci worked for me. > On May 4, 2021, at 3:58 PM, Ed wrote: > > On 5/4/21 2:46 PM, andy pugh

Re: [Emc-users] Can't find the PP. Where is lspci or equiv ?

To be clear, I may have had to run install pciutils to get it to work, but I know it worked. I have install notes somewhere, but they aren’t handy. > On May 4, 2021, at 5:51 PM, andy pugh wrote: > > On Tue, 4 May 2021 at 22:06, Ed wrote: > >> Just installed 2.8 Wheezy and lspci works great.

Re: [Emc-users] Dealing with Servo Faults

I agree, I feel like that’s a fairly safe assumption, although I acknowledge that it is possible the drives might run away. I figure the best way to handle drive faults is to trigger an e-stop (via HAL) so that all drives and the spindle halt motion. Then you could one-shot the fault clear

Re: [Emc-users] PCB fabrication

I’ve used JLC PCB without issue. The boards always look nice and I haven’t had an issue with them. I’ve probably used them for about a half dozen boards. > On Feb 10, 2021, at 12:26 PM, andy pugh wrote: > > On Wed, 10 Feb 2021 at 17:14, Alan Condit wrote: >> >> Can anyone tell me what

Re: [Emc-users] Gear cutting setup on low-cost HF mill??

That’s basically Andy’s idea to simulate a fellows gear shaper by interpolating the tooth form. It’s probably the easiest way if you can work out the math and lock the quill rotation. And grind the appropriate size cutter. Matt > On Mar 11, 2021, at 1:39 PM, Peter Hodgson wrote: > > Could

Re: [Emc-users] Problem with E Stop Logic

lly sure. > > > I checked the firmware, and the ver 3 also has the 1 us > stretch on the come-out-of-estop pulse, so that should not > be the problem. > > Jon > > > ___ > Emc-users mailing list > Emc-users@lists.source

Re: [Emc-users] Problem with E Stop Logic

Yes you had previously mentioned the need to use the first board E Stop input and not use the second board’s E Stop input. That was already correctly wired. Matthew Herd herd.m...@gmail.com 610-608-8930 > On Feb 16, 2021, at 7:14 PM, Jon Elson wrote: > > On 02/16/2021 03:58 PM, Mat

[Emc-users] Problem with E Stop Logic

I’ve been working on a new configuration using a fresh install from the live image for 2.8.0 and have had some trouble with my E Stop logic. I am using two Pico USC boards and a config based on the default USC with encoder sample. When I attempt to click the red button (F1 in Axis) the

Re: [Emc-users] Problem with E Stop Logic

loop is wired to din.15. > On Feb 14, 2021, at 9:47 PM, Jon Elson wrote: > > On 02/14/2021 08:02 PM, Matthew Herd wrote: >> I’ve been working on a new configuration using a fresh install from the live >> image for 2.8.0 and have had some trouble with my E Stop logic. I

Re: [Emc-users] Problem with E Stop Logic

Jon Elson wrote: > > On 02/14/2021 09:03 PM, Matthew Herd wrote: >> Thank you Jon. So it’s impossible to reassign dout.15 to E-stop enable? >> I’m using the first board for the E-stop loop, but attempting to use dout.15 >> on the second board to enable my servo drives. >

Re: [Emc-users] Problem with E Stop Logic

Great, I may not be able to get back to the machine to test until the weekend, but will update you as soon as I am able to test. But given the results I’ve seen with the sample config, I doubt it’ll work. > On Feb 15, 2021, at 10:43 AM, Jon Elson wrote: > > On 02/15/2021 05:21 AM

Re: [Emc-users] Minimally printed rotary. Initial torque testing..

gt; > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > _______ > > Emc-users mailing list > > Emc-u

Re: [Emc-users] TLO: value modified

Try opening the tool table from the drop-down menu. I forget which drop down it is. Then you can modify the offsets manually. > On Jul 14, 2021, at 8:24 PM, John Dammeyer wrote: > > Somehow I've put an offset into the X axis for Tool #1. In the expanded > display it shows up. Load tool #2

Re: [Emc-users] Harmonic Drive

So I imagine it is possible to post-process a thermal plastic gear, but at that point, maybe it’d be better to set up a gear skiving machine to make the flex rings. If you can get the cutter and angle a rotary axis with respect to the spindle, you should be able to do it without much hassle.

Re: [Emc-users] Choice of CNC conversions

www dot autoartisans dot com > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Matthew Herd Email: herd.m...@gmail.com Cell: 610-608-8930 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Power Draw Bar

I believe (but could be wrong) that Haas machines use a single momentary switch on the head to release the drawbar. Matthew Herd > On Nov 14, 2021, at 8:18 AM, ken.stra...@gmail.com wrote: > > I'm unsure of commercial machines but I use only a foot switch on my > Tormach. Tha

Re: [Emc-users] Touch Probe

Is there a provision for tool setting a face mill or a tool with a different center height than the outside diameter? Or do those have to be done manually? I imagine the spindle orientation would also matter for most tool setters due to the spacing of the inserts. Matthew Herd herd.m

Re: [Emc-users] Spindle positioning.

What about a custom draw bar with an Andy Pugh style air cylinder release? Seems simpler to engineer the mechanism than do all this control. Just have a drawbar that’s normally retracted with a flange. Engage the flange with a mechanism on an air cylinder to release.

Re: [Emc-users] Spindle positioning.

Hi John, You don’t need pull studs on the R-8 collets, just thread the draw bar into the collet. Either until it stops or loctite the draw bar at the right depth. Then use a Belleville washer and air cylinder setup like Andy’s. Matt > On Nov 22, 2021, at 1:32 PM, John Dammeyer wrote: > >

Re: [Emc-users] Meanwell SE600-48 Power Supply

I have some older meanwell supplies which are actively cooled. In those units, the fans run all the time. But I’d imagine that their newer models would implement fan control to save a bit of power and reduce noise. > On Jul 15, 2021, at 1:21 PM, Chris Albertson > wrote: > > If you place

Re: [Emc-users] pressure sensor?

c-users > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Matthew Herd Email: herd.m...@gmail.com Cell: 610-608-8930 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] pressure sensor?

for enclosures for a tracking device. I haven’t ever interfaced it to LinuxCNC, I’m afraid. But the parts were very reliable and the accuracy was pretty good. Matt Matthew Herd herd.m...@gmail.com 610-608-8930 > On Mar 10, 2022, at 5:16 PM, gene heskett wrote: > > On Thursday, 10 March 2

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