| 摘要 |
<p>The tool cutter (7) has a cutting edge (17) and V form face (21) which engages a groove (31) in a rotating tool holder (3) which has a profiled cut (39) to provide a spring section (43) against which the cutter is rotated by a tool in a triangular hole (13) to a stop position (27,45) at which it is held for operation.</p> |
