Gearchange component with gear 1 as high gear

More
28 Oct 2018 22:47 - 28 Oct 2018 22:48 #119576 by blazini36
I had a chance to add the spindle index today. I Used an NPN proximity switch and stuck a 6mm grease fitting in the spindle ring set screw hole to trigger it. I removed the PhaseZ encoder wires from the index-input of the 7i76e and stuck the output wire from the proximity switch into index-.

I ran a program with 3 g33.1 moves. It ran OK but the Z axis stepper had some slight jerk to it. I assume this has to do with the motors encoder and the spindle index running slightly out of sync and the stepper position trying to correct for it. I reduced the Z max-acceleration from 15 to 10 and it smoothed out with only only a slight audible jerk. It runs smoother the faster I run the spindle as well

I'm wondering if there is anything else I can do to make the cycle more tolerant to running out of sync. There must be some level of error correction that I can adjust to make the move less sensitive. I'm just not sure what all is effected by a spindle synchronized move.
Last edit: 28 Oct 2018 22:48 by blazini36.

Please Log in or Create an account to join the conversation.

More
29 Oct 2018 00:31 #119579 by andypugh
I think that your assumption that the jerk is due to the Z being from somewhere else might be wrong. It seems likely that you would see the same thing even if the index was on the same encoder as the A and B.

Please Log in or Create an account to join the conversation.

More
29 Oct 2018 03:57 #119583 by blazini36
That was actually my bonehead mistake. I haven’t used the mill in a few and I forgot to hit the low gear button on the GUI after swapping belts. Much smoother now regardless of the acceleration settings.

Please Log in or Create an account to join the conversation.

Time to create page: 0.065 seconds
Powered by Kunena Forum