| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of grinding a workpiece using a grinder capable of avoiding the effect of thermal displacement to improve the grinding accuracy of the grinder for a specified time after the operation of the grinder is started. Ž<P>SOLUTION: In the start cycle, a thermal displacement correction value is considered as an acceptance criterion grinding position and the target grinding position of the start cycle. In the next cycle or subsequent, when a measurement grinding position is within an evaluation range A, the difference between the acceptance criterion grinding position and the measurement grinding position is deducted from the target grinding position of the previous cycle, and the obtained result is considered as the target grinding position of the next cycle. When the measurement grinding position is within an evaluation range B, the difference between a criterion grinding position A and the measurement grinding position is deducted from the target grinding position of the previous cycle, and the obtained result is considered as the target grinding position of the next cycle. When the measurement grinding position C is within an evaluation range C, the difference between a criterion grinding position B and the measurement grinding position is deducted from the target grinding position of the previous cycle, and the obtained result is considered as the target grinding position of the next cycle. When the measurement grinding position is within an acceptance evaluation range, the grinding of the workpiece is completed. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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