Need Help!- Fanuc X axis vibration problem

[ahmed4040]

Does anyone know which parameters should be adjusted for Fanuc 0iMC with alpha-i motors when there is a vibration in X axis ?

this vibration appear at the end of X axis stroke (for b both sides)

Thanks

[CNC Viking]

I think that your X-axis amplifier is singing on its last vers...


Check this thread for different try-and-errors. I solved my problem by changing the amp after some back-and-forth testing such as swapping amps, swapping servo motors, even swapping encoders...

http://www.cnczone.com/forums/mazak_...oud_noice.html

[msa]

Hi

tray to ajust the prop gain (KW faktor)

(system-svtune)

This vorks 9 out of 10 tiems.

[underthetire]

If it's singing only on both ends, i would think its more of an issue with a ballscrew alignment.

[tc429]

Originally Posted by underthetire If it's singing only on both ends, i would think its more of an issue with a ballscrew alignment.

I agree- or if its a really used machine, there could be a hourglass wear to the work envelope, and someone adjusted the gibs in the worn center section...weve got a lot of machines in bad shape, see that happen a lot.

[CNC Viking]

I think it is linear bearings here, not gibbs.

Did you try adjusting the parameter(s)?