| 摘要 |
<p>The described cutting die for external thread differs from the conventional cutting dies by additional openings which are drilled at the edge of the usual chip openings (2) and into which cylindrical rams (6) of a slightly larger diameter are forced. As a result, the cutting teeth are bent in such a way that they then bite into the workpiece only in a very small, virtually punctiform region (Fig. 4). …<IMAGE>… </p> |
