| 摘要 |
PURPOSE:To improve dimensioning accuracy by compensating the detection value of feed per revolution of a lapping machine from the relation between a predicted lapping time and abrasion loss of the lapping machine at the time of initial lapping, and thereafter compensating the above relation based on the measured value of the number of lappings at the time of lapping. CONSTITUTION:When the thickness of a work W during lapping is evaluated from feed per revolution of a lapping machine 1, the detection value of feed per revolution of the lapping machine 1 is compensated from the relation between a predicted lapping time and abrasion loss of the lapping machine 1 (the relation obtained from the lapping operations performed up to that time) at the time of initial lapping. And thereafter at the time of lapping, the above relation between the predicted lapping time and abrasion loss is corrected based on the measured value of the thickness of the work W after lapping, the detection value of feed per revolution of the lapping machine 1 is compensated from the corrected relation, and as a result, the dimensioning accuracy can be improved. |
