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Title: Fluctuating of ZERO position for X and Y [Print This Page]

Author: jacekheli Time: 2019-1-30 21:29
Title: Fluctuating of ZERO position for X and Y
Hello,
I'm using the DDCSV 2.1 with a hybrid stepper with encoders, ball screw (no lashes). Repeating the same g-code ZERO is fluctuating moreless 0.11mm on X and Y axis for each cycle. Does any one had the same problem? If possible please check on yours machine G-code by milling circle 20 times using start button only after finishing milling.
regards
Jacek

Author: jacekheli Time: 2019-1-31 16:14
Hi again,
I've prepared pictures to show the problem.
Main parameters:

Circle with radius 5 mm repeated 25 times and the efect.

Author: jacekheli Time: 2019-1-31 16:16
Last edited by jacekheli In 2019-1-31 16:19 Editor

I can't upload pictures directly, you can find here:Main parameters:
https://imgur.com/Hs9S3ya
https://imgur.com/HtnKE6U
Result:
https://imgur.com/1daoLy7

Author: jacekheli Time: 2019-1-31 16:16

Author: alexwalex Time: 2019-1-31 22:29
Invert parameters #418 and #419 and test.
If that doesn't help, then:
set the parameter #416 to 5000 and test again.

Author: jacekheli Time: 2019-2-1 15:07
Hello Alex,
thanks for support, after changes based on your recommendation zeroing is repeatable. Great!

I've the other issue. After homing the spindle is randomly shifted on X, Y and Z axis and evel on the screen I see 0.000 value for each axis, the spindle in shifted randomly. Do you have any idea how to solve the problem? For Home and Limit I installed Balluff inductive sensors.
Jacek

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