| 摘要 |
The invention relates to a rock drill comprising a drill head. At least two blades (3, 4) are arranged on the drill head, said blades being oriented substantially radially in relation to the longitudinal axis of the drill when seen from the top. The blades have respective preferably continuous cutting edges that are defined by an advancing face (3b) and a trailing flank (4c). The invention is characterized in that the flank on at least one blade has at least one substantially convex shape (4d) (flank dome) which defines together with the face a substantially convex shape in the cutting edge (cutting edge dome). |
