Hello,
I started cutting today on a machine that was recently converted. During the
course of two hours the y axis drifted about 15 thousandths and the x axis 5.
I have this machines sibling running 20 hours a week and it shows no signs of
drift. The sibling is running emc 1.xx and a different servo amp.
My understanding of tuning is that if I have a bad tune the machine might not
get where I tell it to go, but it will still know where it is. Similarly with
backlash if it has 3 thousandths in backlash if it moves to the right then the
left and returns to a mid point the backlash should cancel out and I return to
where I should.
The machine is running a pico-system servo setup with emc 2.1.7(I think).
Encoders are on the motors and the motors are belted to the ballscrews. I have
new belts and similar tension to the other machine.
Is this drifting a function of the iron or the controller?
As always thanks.
Richard
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