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6. Machine Accuracy Measurement and Adjustment
- Y plane
① Measurement
Place a straight edge by laying down on the table in X-axis d
irection, set the indicator
to “0 ”
on both ends of the straight edge by setting up an indicator on the spindle head
and, then, measure maximum difference (measurement in the middle) while moving
X-axis.
▪ With this method, set one end to “0 ” and hit the other end slightly with a driver
handle, etc. while pressing the setting area with a finger. Both ends are adjusted to
“0 ” and the value for the center is taken as a measurement value.
※ If a Straight Edge was not prepared, measure both ends and center on X-axis
plane of a square ruler instead, when measuring X-Y squareness.
▶
Measurement position : Both ends and center of the straight edge side
▶
Tolerance : 0.005mm / 300mm
② Adjustment
If the straightness of the X-Y plane of the X-axis is wrong, an irregularity of the
machine feed level could be a possible cause, in which case re-leveling should be
performed by referring to “Machine Level Operation.”
▪ If the problem is not resolved by re-leveling as mentioned above, an X-axis LM
Guide defect or an LM Guide misalignment could be another possible cause, in
which case it will be necessary to replace the LM Guide or re-align it
problem.
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