Apparatus for moving a tool in a controlled manner.

摘要

Apparatus for moving a tool such as a grinding wheel (W) of a lens generating machine comprises a carrier (13) for the tool which is movable about a pivot (14) along an arcuate path and a cam and follower device (46, 42) operable to move the carrier (13) along a slideway (11) transverse to the arcuate path as a result of movement of the carrier (13) about the pivot (14). In that way the tool can be controlled so that it follows a locus determined by the two movements.