| 摘要 |
The pot-shaped rock drill head (2) has cutters (1) of a hard material to penetrate through rock. They are secured to the drill rod (4) by an axial guide surface, with at least one radial carrier wing (5a-5c) through a bayonet locking groove (6a-6c) in a release mounting. Two cut-backs (7a,7b), axially opposite each other, allow the wings a limited axial movement. |
