| 摘要 |
<p>A machine tool has a circular support including a series of separable sections, with a gear movable thereon and connected to a plurality of spaced workpiece supporting pallets with rollers movably mounted between a plurality of work stations around the support, upon a pair of rails, one rail having a cam surface. A plurality of abutments are mounted on the support at each work station and supportably engage a pallet when at such station, the pallet being anchored to the abutments for machining of a workpiece. The pallet is lifted off the rails when at a work station and solely supported by the abutments. As the pallet leaves a work station, on advancing of the gear, the cam rail lifts one side of the pallet upwardly to a transfer position above the abutments, with the other side of the pallet lowered for engagement with the other rail.</p> |
