| 摘要 |
The tool has a chisel head (1) comprising a chisel bit (5) at a free axial end of the chisel head and forming a bracket bit (7) to the chisel bit in an axially-displaced manner. The bracket bit is released by removal of tool material, and replaces a part of the chisel bit, where the removal of materials is decreased to tool wear. A reinforcing structure (8) runs adjacent to a transition region between the chisel bit and the bracket bit for reinforcing the chisel head. The reinforcing structure comprises two reinforcing parts (9a, 9b), which run axially and form additional bracket bits. |
