| 摘要 |
<p>PURPOSE:To operate centering and measure hole diameters accurately even when there is a deviation between contact-detection head and spindle, by controlling the rotation or stop of a spindle corresponding to the operational instruction given to an arithmetic and control device. CONSTITUTION:In processing work W, a tool is fitted to spindle 17. But, in centering a hole already process or measuring a hole diameter, contact-detection head TS is fitted to it. When the contact surface of contact-detection head TS comes into contact with work W, detection signal TDS is output by contact-detection circuit 3. Arithmetic and control device 4, in operating centering, exercises control in such a manner that contact detection is performed under the condition where contact-detection head TS is being rotated. In measuring a hole diameter, it exercises control in such a manner that contact-detection is performed under the condition where head TS is stopped. Hence, even when there is a deviation of center between head TS and spindle 17, it is possible to make an accurate measurement.</p> |
