Machine with an intermittently rotating table for the preformance of work operations

A machine for performing work operations on workpieces, comprising a work table for supporting said workpieces, said table being rotatable about a vertical axis, means for intermittently rotating said table about said vertical axis, a plurality of operating units disposed peripherally about the table and mounted for movement toward and away from workpieces carried by the table, a central shaft lying on the axis of rotation of the work table and movable both axially and rotatably relative to the work table, means responsive to axial movement of the shaft to move said operating units toward workpieces on the table, said responsive means comprising cams carried by the shaft and engageable with cam followers whose movement moves the operating units, indexing means engageable with the table to fix the rotated position of the table so that when the table is stationary, the workpieces will be in registration with the operating units, means for engaging said indexing means with and disengaging said indexing means from the work table whereby the work table undergoes its rotary movement when said indexing means are disengaged, and means to rotate the shaft when the indexing means are disengaged thereby to permit return axial movement of said shaft in the rotated position thereof with said cams out of contact with said cam followers.