G"day,
I haven't been on here in a long time but I have a question someone might be able to answer.
The problem I am having is with a cnc converted knee mill that I did myself.
What is happening is when I drive X or Y axis in either direction with the drive belts connected (timing belts & pulleys) it goes fine for a bit the it has a moment where it "slips" a little and then continues.
Of course this is no good for cnc jobs.
I have so far eliminated the belts and pulleys as culprits, which only leaves, the ballnuts or motors.
If I disconnect the belts it is free as a bird, it just doesn't like being loaded up.
Funnily, the Z axis doesn't "slip" and that is under a heap of load with an un counterbalanced table that has to weigh well over 50 kg, maybe more.

So any hints, as I'm stumped.
Thanks.
Deane.