| 摘要 |
The tool (10) has a cup-shaped drill head (21) comprising a rotary drive slot (22) provided along a tool axis (A), and a drill rod with an end that is provided with rotary drive bars (12), where the drive bars are inserted into the rotary drive slot. The drill head and the drill rod are detachably connected with each other in a torque-proof manner by a coupling unit. The coupling unit has an elastic locking unit for holding the bars in the rotary drive slot, where the locking unit has a spring element (13) that is resiliently moveable in a circumferential direction of the drill head. |
