| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce cost and required time for replacing a drill chuck with another drill chuck, in a drilling device constituted of a drilling machine having a drilling spindle and the drill chuck having a chuck body and connecting the chuck body to the drilling spindle to be releasable, non-rotatable and axially non-movable. SOLUTION: In the chuck body 5, a tenon 14 having rotationally asymmetrical cross section is arranged on a side directed to the drilling spindle 4. In the drilling spindle 4, a tenon receiving part 15 having cross section corresponding to the tenon 14 is provided. The tenon 14 is provided with a recess 16 extending in a peripheral direction. A locking member 18 is mounted on a receiving part wall 17. The locking member 18 can be shifted between position/attitude projected into the tenon receiving part 15 and position/attitude drawn back from the tenon receiving part 15 by a spindle ring 19.</p> |
