Loose Y-axis ballscrew
Posted: Thu 12 Sep , 2013 22:02 pm
Hi
I have been monitoring some 0.04mm backlash in the Y-axis on my 86-triac. Since I have shimmed my X-axis to now have a much better 0.004mm backlash I naturally thought that this was the case for the Y-axis too. So I made some shims and took the whole thing apart and then got the whole thing back together and at the same time tighten the wedges for the axises.
Now I was measuring 0.1mm backlash. Crap!!
After some headscratching I put a dial-indicator to the exposed end of the Y-axis ballscrew. And althogh it is kind of rough surface there I could clearly see that the whole ballscrew was moving about 0.1mm when changing direction when jogging the Y-axis.
So, question: has anyone ever had this issue and if so did you manage to fix it? I have no more time tonight to look at it but I have a bad feeling about this one. Is there a way of tightening the ball bearings that support the ballscew or is it a whole new setup that is needed?
Thanks
Per
I have been monitoring some 0.04mm backlash in the Y-axis on my 86-triac. Since I have shimmed my X-axis to now have a much better 0.004mm backlash I naturally thought that this was the case for the Y-axis too. So I made some shims and took the whole thing apart and then got the whole thing back together and at the same time tighten the wedges for the axises.
Now I was measuring 0.1mm backlash. Crap!!
After some headscratching I put a dial-indicator to the exposed end of the Y-axis ballscrew. And althogh it is kind of rough surface there I could clearly see that the whole ballscrew was moving about 0.1mm when changing direction when jogging the Y-axis.
So, question: has anyone ever had this issue and if so did you manage to fix it? I have no more time tonight to look at it but I have a bad feeling about this one. Is there a way of tightening the ball bearings that support the ballscew or is it a whole new setup that is needed?
Thanks
Per