| 摘要 |
<p>The former has a punch (1) operated by a press. The punch is fixed to a support plate (2) by a screw (3). The mandrel (1a) supports the work piece (4) which is fixed axially on the plate (5) by a screw (6). The tool holder (7) is fixed to the retaining ring (9) by a screw (8). The rollers are maintained in grooves (14) in a cage (13). The cage positions the rollers radially. The cylindrical centre ring (11) is held by two retaining rings (9,12).</p> |
