VMC20 X-Axis Chattering/Vibrating

[WeTDrEaM]

Recently we have had our X axis chattering/shuttering. You can feel it in the sheet metal of the machine and see the chatter in diagonal cuts of the material. Anyone have any idea what this could be or how to fix it?

[WeTDrEaM]

ok, so after some thinking between myself and my partner we've come to the conclusion we probably screwed up adjusting the gibs on the X-Axis table. We had slop in x axis to where the table would move front to back a bit. So we tightened up the gibs and now we are having this problem. If you actually watch the table very closely when its moving left to right (x-axis) it stutters, if that makes sense. Almost stutters. All of the bad cutter marks are in any "angle cut". The left to right and up and down cuts are smooth still. Circles, angles, etc look like hell.. Below is a pic of what the angle cuts look like...

ANY HELP WILL BE GREATLY APPRECIATED. We have a few good jobs coming up and the machine isnt doing so well...

Not sure if we need to readjust the gibs for the x-axis or what.. If so, does anyone have a detailed procedure for us to run by other than what we already used?



PLEASE HELP!! lol

[DareBee]

The gibs should have a half thou clearance at the tightest spot.
If you disconnect the ballnut you should easily be able to slide the table full stroke by hand.

[MrBoss8]

Have you ruled out settings in your software? Or tried a completely different program to generate code, ruling out a software issue? Since the problem does not appear in single axis movement of x or y, it would seem to be either in your software, or your machine controller settings or setup, and probably has nothing to do with your machine, physically. The steps I see look way too consistent and faceted. Then again, check for garbage on the servo drive pulleys, that would not show up on single axis moves, but might on 2D moves? Just a thought.