1
General Mach Discussion / Re: Mach3 turn threading problem with Z feedrate
« on: February 08, 2020, 09:15:32 AM »
Try programing the thread start further away from the work. Also, you might look at your spindle tach and make sure its got enough slot to get a good solid pulse from the tach sensor back to mach.
also, check motor acceleration settings and see if lowering them helps.
Also, my experience is with a slot too small on the tachometer disc, i could not get threading to work. Opened up the slot and it works fine for me. I do not think the mach rpom dro reads as accurate as you might think it does. I suspect this dro causes problems as it does not always appear to be tracking exactly the rpm.
These are just best guesses. based on past expierence.
also, check motor acceleration settings and see if lowering them helps.
Also, my experience is with a slot too small on the tachometer disc, i could not get threading to work. Opened up the slot and it works fine for me. I do not think the mach rpom dro reads as accurate as you might think it does. I suspect this dro causes problems as it does not always appear to be tracking exactly the rpm.
These are just best guesses. based on past expierence.