V-profile grinding wheel

Details V-profile grinding wheel V-profile grinding wheel

1994-08-19

1996-08-06

Kisliuk, Bruce M.

Abrading

Rigid tool

451 43, 451255, 451256, 451547, 451541, B23F 2103, B23F 2123, B24B 500, B24B 716

Patent

active

055428762

ABSTRACT:
A grinding wheel for V-profiling ophthalmic lenses of various diameters, powers and thicknesses has a V-shaped groove circumferentially thereabout which defines a forward V surface and a rear V surface meeting at a nadir of the groove. A rear flat surface tapers outwardly in relation to an axis of rotation of the wheel from a rear edge of the rear V surface toward a rear face of the wheel. The forward V surface is of a first grinding aggressiveness, the rear V surface is of second grinding aggressiveness greater than the first grinding aggressiveness and the rear flat surface is of third grinding aggressiveness substantially greater than the second grinding aggressiveness. In a preferred embodiment, the wheel also has a forward flat surface tapering outwardly in relation to the axis of rotation of the wheel from a forward edge of the forward V surface toward a forward face of the wheel. The forward flat surface is of grinding aggressiveness substantially greater than the second grinding aggressiveness and equal to or less than the grinding aggressiveness of the rear flat surface.

REFERENCES:
patent: 3673738 (1972-07-01), Stern
patent: 3894361 (1975-07-01), Georgiadis et al.
patent: 3919811 (1975-11-01), Hedelin

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