Homing and Backlash Compensation
01 Apr 2016 02:35 - 01 Apr 2016 02:41 #72500
by squan09
Homing and Backlash Compensation was created by squan09
Does backlash have any effect when homing. I just noticed that one axis is moving the same distance as what I have my backlash set to. I do not ever remember noticing this before though.
It only seems to be happening when I perform a jog at max velocity over some distance. Not sure what that distance is yet, but if I just tap the jog then home it will sometimes move and sometimes not.
It only seems to be happening when I perform a jog at max velocity over some distance. Not sure what that distance is yet, but if I just tap the jog then home it will sometimes move and sometimes not.
Last edit: 01 Apr 2016 02:41 by squan09.
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02 Apr 2016 11:44 #72560
by BigJohnT
Replied by BigJohnT on topic Homing and Backlash Compensation
If you have enough backlash that you can see it, you really need to fix that. A CNC mill needs to have no backlash.
JT
JT
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02 Apr 2016 17:23 #72574
by squan09
Replied by squan09 on topic Homing and Backlash Compensation
Yes that's true, but is this normal behavior. I couldn't find anything about backlash effects on homing and it's inconsistent behavior is odd. Also I could only verify that the position command was the same distance as the backlash compensation using halscope and when I probed the other axes I have backlash compensation on this wasn't happening.
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02 Apr 2016 17:41 #72576
by BigJohnT
Replied by BigJohnT on topic Homing and Backlash Compensation
I don't know what normal is for backlash compensation, I've never used it. I do know it has some limitations IIRC.
JT
JT
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