| 摘要 |
PROBLEM TO BE SOLVED: To automatically position a drill surface to be ground relative to the grinding face of a grinding wheel in drill regrinding work. SOLUTION: In this method, only a pair of the flanks 7a and 7b of the drill tip section 2 clamped by a drill chuck 12 in a method that the tip of a drill 1 to be reground is kept at the same position are selectively enlarged and imaged in a CCD camera 33, and a flat main spindle connecting the centers of a pair of enlarged projection images 49a and 49b is calculated using an image processing system 34, and the motor A 37 connected to the drill chuck 12 is rotated through a control system 4 to make the flat main shaft align with a preset reference axis. Then, in the case where the drill 1 moves to a position where the drill 1 is ground while being turned in the face perpendicular to a turning shaft, the reference axis is set by making the projected line of the cross line of the drill 1 align with the direction of the turning shaft. |
