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4th axis rotary losing position when machine is turn on next day

Joined
Jul 3, 2014
Location
usa/ca/sfv
Hello everybody
i have a problem that i think may be an easy fix
i have a doosan dnm 500 vmc
with a kitagawa 4th axis rotary put on by ats systems
every day at night i return all axis to the home position even 4th axis then turn off machine
the next day i come in jog axis and then return all of them home
but the 4th axis is always off 1 to 3 degrees
does anybody have any experience with this problem and the corrective action
thanks
 
had similar trouble with a Makino it had moister in the encoder. try leaving the main breaker on and only turning off the NC power see if that changes anything. or just leave the machine on.
 








 
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