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X axis wobble along Y during X motion (and vice versa)
Hey guys, I just completed my V-Core 3.1 and noticed a motion system issue. here are the summary of the problem:
Issue observation:
1) X axis wobble along Y during X axis movement (same for Y axis): https://drive.google.com/file/d/1KBno_NA2EgNNHVjQ_mW-qBEWDhvndrYf/view?usp=share_link
2) Printed parts exhibit “wavy” surfaces along X and Y axis (they are supposed to be straight)
3) X wobble is more pronounced when toolhead is nearer to either ends of the x gantry
4) Wave surface is very consistent and appears on the same area of re-printed parts.
Troubleshooting steps that I've done so far:
1) Double checked upper and lower belts are exactly the same length, mounted as symmetrically as possible
2) Double checked Y linear rails to ensure no binding is observed over entire range of motion
3) Re-tensioned belts, using Voron 2.4 method to measure frequency to ensure equal tension.
4) Verified that the motor pulleys are positioned such that the belt runs in the middle of the toothed section with visible gap on the top and bottom
5) Checked pulley and idler rotation smoothness, noticed upper belt has significant more friction: caused by deformed top motor bracket printed part due to excessive motor screw tightening: reprinted and solved, but unfortunately the issue still persists.
6) Check for motor pulley off-center wobble: removed both motors and run a print for direct observation, https://drive.google.com/file/d/1zzXlGQ1N5aefQ2jg43cFf9m_aX-4KLHk/view?usp=share_link. I don't see any excessive wobble, so i cant be sure about this.
7) Turned off input shaper and pressure advance: same issue
8) Gradually reduce belt tension to bare minimum : same issue
9) Replaced V3.1 x axis front facing idlers with 3.0 toothed idlers: same issue
10) Swapped XY motor with Z axis motors (to verify that its not a motor issue): same issue,
At this point, Im pretty much out of idea and wondering if it is a firmware related issue? any help is very much appreciated!
Issue observation:
1) X axis wobble along Y during X axis movement (same for Y axis): https://drive.google.com/file/d/1KBno_NA2EgNNHVjQ_mW-qBEWDhvndrYf/view?usp=share_link
2) Printed parts exhibit “wavy” surfaces along X and Y axis (they are supposed to be straight)
3) X wobble is more pronounced when toolhead is nearer to either ends of the x gantry
4) Wave surface is very consistent and appears on the same area of re-printed parts.
Troubleshooting steps that I've done so far:
1) Double checked upper and lower belts are exactly the same length, mounted as symmetrically as possible
2) Double checked Y linear rails to ensure no binding is observed over entire range of motion
3) Re-tensioned belts, using Voron 2.4 method to measure frequency to ensure equal tension.
4) Verified that the motor pulleys are positioned such that the belt runs in the middle of the toothed section with visible gap on the top and bottom
5) Checked pulley and idler rotation smoothness, noticed upper belt has significant more friction: caused by deformed top motor bracket printed part due to excessive motor screw tightening: reprinted and solved, but unfortunately the issue still persists.
6) Check for motor pulley off-center wobble: removed both motors and run a print for direct observation, https://drive.google.com/file/d/1zzXlGQ1N5aefQ2jg43cFf9m_aX-4KLHk/view?usp=share_link. I don't see any excessive wobble, so i cant be sure about this.
7) Turned off input shaper and pressure advance: same issue
8) Gradually reduce belt tension to bare minimum : same issue
9) Replaced V3.1 x axis front facing idlers with 3.0 toothed idlers: same issue
10) Swapped XY motor with Z axis motors (to verify that its not a motor issue): same issue,
At this point, Im pretty much out of idea and wondering if it is a firmware related issue? any help is very much appreciated!
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