| 摘要 |
<p>The procedure, in which the cutting edge (8) of a drill bit is sharpened by an automatically-controlled grinding wheel (15), includes the detection and recording of a series of points on the cutting edge to permit a programmed control of the grinding wheel's movements. It differs by having the grinding wheel linked to an ultrasound or piezoelectric contact detector (17) via recording (16) and control (19) units which stop its movement after contact with the aforementioned points is detected, and their positions are recorded. The wheel is then controlled according to the recorded positions of the points to sharpen the cutting edge.</p> |
