| 摘要 |
The invention concerns a machining tool, in particular a face cutter for machining fibre-reinforced materials such as carbon-fibre-reinforced plastics, glass-fibre-reinforced plastics or plastics reinforced with polyester threads. The machining tool comprises a plurality of main flutes (1, 2, 3, 4, 5, 6), which form with a trailing premachining land in each case a cutting wedge with a premachining cutting edge (13, 14, 15, 16, 17, 18), and a plurality of auxiliary flutes (7, 8, 9, 10, 11, 12), which correspond to the plurality of main flutes (1, 2, 3, 4, 5, 6), each trail one of the main flutes (1, 2, 3, 4, 5, 6) in the peripheral sense, each distance in the peripheral sense a postmachining land from the pre-machining land leading in the peripheral sense, and form with the postmachining land a cutting wedge with a postmachining cutting edge (19, 20, 21, 22, 23, 24). The invention is characterized in that the premachining cutting edges (13, 14, 15, 16, 17, 18) extend alternately with left-hand twist about and untwisted along the tool axis, the postmachining cutting edges (19, 21, 23) trailing the left-hand twisted premachining cutting edges (13, 15, 17) extending untwisted along the tool axis, and the postmachining cutting edges (20, 22, 24) trailing the untwisted premachining cutting edges (14, 16, 18) extending with a left-hand twist about the tool axis. |
