| 摘要 |
The undercutting drill comprises a spindle and a deflector plate bearing against the edge of the drill hole. The drill shank with the cutter is fixed to the plate in an inclined position. The spindle (14) is coupled to the plate (9) via a universal joint (8), while the cutter comprises a plate (7) protruding in the radial direction form the forward end of the shank (6). The plate can be a disc tapering towards one side. |
