Messages

91

General Mach Discussion / single block

« on: November 10, 2005, 01:43:03 PM »

Hi,
I have a problem with single block not working or doing wierd stuff. Last nite I clicked single block, let it come down near part & looked away at screen for a bit. It started cutting when I was not ready for it and kept on going, block after block. I clicked single block off then on and it stopped at the end of the next block as it should. Then later I clicked it near the end of a toolpath in preparation to check the next move and it took off, at least AWAY from the part. It did this during an arc out of a contour. I restarted and it worked as it should. I had this problem a lot with Mach 2 and now it's doing it with Mach 3(v 1.83.012 I think).
Any ideas?

Thanks
Mark

92

General Mach Discussion / Re: motor tuning?

« on: November 01, 2005, 09:04:28 PM »

Update
Thanks John
was able to finally get Mach to accept (and keep) a value in pulse width. It did change tho, as I opened & closed Mach. Seems to like keeping 3 in place so thats where I'll leave it. Didn't make much difference tho. I did change backlash feedrate(% of feedrate) and that seemed to really help. It was 8%. I have it at 50% now and seems to work well. It seemed to always stop as soon as it started; maybe compensating for BL? Does this make any sense?
I'll take what I can get. Ran program thru about 10 or 12 times successfully

Mark

93

General Mach Discussion / Re: motor tuning?

« on: November 01, 2005, 01:50:44 PM »

I've closed & reopened Mach, but still the same thing. I put in a 1(or 2) and save and everythings fine, but when I open motor tuning page again all are 0.

 

Mark

94

General Mach Discussion / motor tuning?

« on: October 31, 2005, 08:22:25 PM »

I'm trying to tune my motors on my micro-mill. I have servos, and the one on X sometimes starts to move them stops. I have to set acceleration to an incredibly low value (.5 or so) to get it to run somewhat reliably. I tried to set the step pulse width to something other than 0 but it won't save it Have latest version(1.83.012) as of this writing. Other axes work well as is & I can rapid all. Just have problems feeding, usually near end of program!

Thanks
Mark