Lens edging apparatus

Details Lens edging apparatus Lens edging apparatus

B - Operations, Transporting

24

B

51/22

B24B 9/14 (2006.01)

Patent

CA 1111652

IMPROVED LENS EDGING APPARATUS Abstract of the Disclosure An apparatus for edging the periphery of an ophthalmic lens to a predetermined outline or edge configuration, is characterized by a work holder for supporting and rotating a lens while moving an edge of the lens against a grinding surface of a grinding wheel. During grinding the lens is engaged with only a portion of the surface, and to prevent a groove from being formed in the surface a sensor automatically detects the highest point on the surface and controls movement of the work holder to move the lens thereagainst. In consequence, the wheel wears evenly, it retains a substantially cylindrical shape, all portions of its grinding surface are effectively used in grinding lenses, and formation of a groove in its surface is prevented, whereby the wheel does not require retruing or reshaping and its useful life is significantly increased.

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