| 摘要 |
<p>A central turret (36) rotates continuously on a central axis and carries a plurality of planetary turrets (58-68) that rotate on their own axes. An index drive intermittently moves each planetary turret through a cycle consisting of both a period of rotation through a fraction of a revolution on the planetary turret axis and a period of dwell at an indexed position. The planetary turrets each carry a plurality of tool heads and during successive periods of dwell, a successive one of the tool heads is presented to a workstation. A workpiece carrier supports a workpiece in proximity to the workstation. Rams operatively engage the workpiece and tool head as the successive tool heads dwell at the workstation. In this way, a workpiece is processed by a plurality of tool heads during a single revolution around the central axis.</p> |
