| 摘要 |
PURPOSE: To make the measured value of a machined hole inner diameter in honing work approach the target value even with the temperature change of a workpiece during conveyance to an inner diameter measuring process after the end of workpiece honing work. CONSTITUTION: The inner diameter and temperature of a master ring 59, and the inner diameter and temperature of a cylinder bore 25B are respectively measured by a probe 11 and a thermocouple 65 provided at a gage head 63. On the basis of the measured value, a first arithmetic circuit 67 computes the inner diameter of a cylinder bore 25B with temperature difference taken into account, and the correction value of a machined hole inner diameter is computed from the difference between the computed inner diameter value and the target inner diameter value of the cylinder bore 25B. |
