| 摘要 |
A central turret rotates continuously on a central axis and carries a plurality of planetary turrets 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.
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