| 摘要 |
PURPOSE:To set a working time constant, and equalize conditions of a finished surface for a single work by maintaining a surface pressure to an inner surface of a working hole of a grinding wheel provided at a holding tool at a desired value. CONSTITUTION:Prior to performing honing work, an expansion pressure (p) by an oil pressure source 29 is measured by an oil pressure gauge 35, and a pressing pressure of a grinding wheel 19 generated by this expansion pressure (p) is measured by using a pressure measuring ring 51. Mutual relationship of these measured values is maintained in a specified relationship which is predetermined, and a valve 33 is opened/closed to control the expansion pressure (p) for setting the pressing pressure at a set value. |
