Background
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For information, see "About Angular Contact Bearing Pre-Load".
Required Tools
To Adjust the Angular Contact Bearing Pre-Load
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Under typical use, no adjustment of pinned connections should be necessary. In the event of a hard crash, you can use shims to make minor alignment adjustments between pinned components. Small adjustments (less than 0.010 inches) will generally not require a full disassembly of the pinned connection. In these cases, the alignment dowels can be left in place, and the shims can be inserted into a small opening created by loosening the bolted connections.
Looking for more information?
This is a section of the PCNC 440 operator's manual. To view the whole manual, go to Tormach document UM10372.
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Backlash Compensation
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Backlash compensation is only available on Pathpilot version 2.2 and above for all machines |
Backlash compensation is used after the gib and angular contact bearings have been adjusted to less than .001” of lost motion.
Use the “ADMIN SET_AXIS_BACKLASH” command in the MDI line to apply backlash compensation. Use X/Y/Z following the command to indicate the axis to apply backlash compensation to and a number following the axis to indicate the amount of compensation to apply. Compensation is limited to .005” per axis.
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The “ADMIN GET_AXIS_BACKLASH” command will display the current amount of backlash for each axis. The “ADMIN RESET_AXIS_BACKLASH” command will reset the backlash values of all axes to 0.
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Note: There is no backlash compensation for the A axis.