| 摘要 |
PROBLEM TO BE SOLVED: To provide automatic, stable and high coaxiality accuracy at inversion working. SOLUTION: This device to rotate a work 2 by an angle of 180 deg. for positioning it and to coaxially/inversely process the work 2 comprises a pallet 3 for calibration to be exchanged with a pallet 1 for loading a work by a pallet changer and fixing a reference member 4 on its upper face, and a work rotation axis detecting means 7 for rotating the pallet 3 by 180 deg. and measuring the center of the reference member 4 for detecting the center of a work rotation axis 5.
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