Our backlash on Z gone wild so we are looking for the cause....
Removed the ball screw (with the servo block). I did not feel any noticable backlash on the screw, but after puttingit back i checked the ballscrew's axial movement which is according to the dial is a bit too mutch. 0,30-0,4 mm ( 0.0118 INCH).
Ive measured this by using a dial indicator, touching the bottom of the ball screw - fixing nut has been removed from there !
What do you think ? Bearing fail on the top ?
Or this is normal ? I dont think that....
Thread: 4020 HT Z axis issue ?
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12-30-2014, 08:33 PM #1
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4020 HT Z axis issue ?
FADAL VMC4020 HT 1995, Z 28" (if true) , 88HS , 10K rmp , 21 TC geneva /rotary/ , VH-65 (A-axis) ,3ph 400V , metric, NO conveyor, No palette. (+alternative DC AMP)
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01-03-2015, 07:24 AM #2
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the bearings are bad
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