Machine for processing optical workpieces, in particular plastic spectacle lenses

A machine for processing optical workpieces, of plastics material, comprising a machine housing enclosing a working space, which lies between a workpiece spindle, which is arranged at the machine housing and by way of which the workpiece is drivable to rotate about a workpiece axis of rotation, and a fast-tool servo, which is arranged at the machine housing, for producing an oscillating feed movement of a lathe tool in the direction of the workpiece, wherein provided for the workpiece spindle or the fast-tool servo is a drivable carriage, which is guided by at least two guide surfaces of a guide arrangement and by way of which a relative advance movement between workpiece and lathe tool can be produced, the advance movement running transversely to the feed movement and defining therewith a processing plane in which engagement between lathe tool and workpiece takes place for the processing, and wherein the guide arrangement is mounted on the machine housing such that the processing plane extends between the two guide surfaces.