| 摘要 |
PURPOSE:To provide a method for corrective grinding where the grinding and of a unsymmetrical, highly precise die, a non-spherical lens or the like can be automated with high precision. CONSTITUTION:A self-copying grinding device 1 and an automatic measuring instrument 2 are provided on a spindle head 4 of an NC machine tool to be controlled by a control device 3 to execute the measurement and the corrective grinding of the surface of a work, and during the measurement, the moving error and the thermal drift of the machine is corrected, and at the same time, the real grinding quantity per pass is monitored from the results of measurement, the following grinding quantity is presumed thereby, the number of the following grinding is set, and the correction factor is introduced to prevent the overshoot due to the variance of the grinding quantity. |
