| 摘要 |
PURPOSE:To stabilize surface roughness of an inner surface of a worked hole at the optimum value to be without fluctuation by the number of working. CONSTITUTION:Surface roughness of a grinding wheel 11 is detected by a contactless surface roughness sensor 45 for every processing cycle, expansion pressure in the next work cycle is increased when the detected surface roughness is excessively small because of loading, the expansion pressure in the next work cycle is reduced when the detected surface roughness is excessively large, and honing work is performed, thereby the surface roughness of a finished surface of an inner surface 5 of a worked hole is stabilized at the optimum to be without fluctuation by the number of working. |
