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« on: July 31, 2018, 11:02:11 PM »
Time to revisit this problem. Still having positional error with threading. It seems as when the tool is done cutting and moves back to it's starting position (X0 Z0) before going to it's home position (G53 X-.25 Z-.25) it's losing steps or jerking or something. You can hear it. But if I re-home the machine and bring that tool back to where it should be then it's good. So this means the belts are tight, the pulleys on the servos are not slipping and the servos are not losing steps. I say this, correct me if I'm wrong, but if the servos lose steps I'm assuming the machine would halt or give me an error. Also the belts and pulley are not it because when I start the machine up and home the machine I turn just the servos off and back on so they can home to their optical index. IF they were slipping that would be off as well when I tried to cut with a known diameter piece of stock.
BTW this only happens when threading. I run 20-30 pieces of stainless parts all the time (just turning no threading), last week in fact, and everything was dead nuts. I even tried tuning my servos to 40ipm instead of 80 and it still does it. It also does it if I change the final rapid moves in each block of code from G00 to G01, because that's where it's happening.
Any suggestions? I didn't try the single line threading as mentioned above yet.
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