Tool operating assembly for a lens shaping machine

A tool operating assembly for a lens shaping machine to finish the peripheral edge of a corrective lens wherein said tool operating assembly is disposed in operative relationship relative to a lens operating assembly, the lens operating assembly comprising a lens support assembly to support the lens to be finished and a multi-axis lens positioning assembly to move a corrective lens relative to said tool operating assembly during the finishing operation to finish the peripheral edge of the corrective lens, said tool operating assembly comprises a multi-station tool support assembly including a turn-table to operatively support a plurality of tool assemblies each including a tool mounted thereon, said multi-station tool support assembly is rotatably coupled to a motor to selectively position one of said plurality of tool assembles at a finishing station adjacent the lens operating assembly to engage the peripheral edge or edge portion of the lens to be finished, a tool drive assembly comprising a substantially vertical tool drive shaft is disposed in vertical alignment relative to said finishing station and coupled to a tool drive motor, and a magnetically coupled clutch assembly to operatively couple said selected tool assembly and said tool drive assembly to rotate said selected tool assembly positioned at said finishing station during said finishing operation.