Backlash , Any suggestions ?

[philgiggins]

Hi Jazz,
The first thing i did was go around and check every relevant nut bolt and coupler ! They all seemed to be fine. But no harm to have another look.
Rack and Pinion are 20' pitch, pinion moves 94.2mm per revolution. Geared down by 5:1. Ball screw on Y is a 2010 its ran from a belt 1:1 (2 no 34-5M-15mm (TL) Timing Pulley) and on Z its a direct drive 2505,

I was having some resonance issues at slow speeds when i first started cutting so i upped the microstep setting on the driver and it helped a lot. I upped it to 4000. When i talked to company they suggested putting it back down to 800. I will try this on Monday.

Im pretty sure its not a binding issue. I can jog around no hassle as 10/12 m/min. Although maybe that could change under load. I need to eliminate it 1 thing at a time.

Acceleration is set to 100 ( this is low i think ) Max speed is set to 5m/min.
If i cut below 2.5m/min i have no issue its when i go above this the problem starts....

Thanks Philip