Radially adjustable grinding wheel for grinding concave surfaces

Details Radially adjustable grinding wheel for grinding concave surfaces Radially adjustable grinding wheel for grinding concave surfaces

1975-05-15

1976-10-19

Smith, Al Lawrence

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51309R, B24D 506, B24D 308

Patent

active

039863034

ABSTRACT:
A lens grinding machine with a radially adjustable work holder on which various sizes of lens carriers with lens blanks to be ground, may be mounted and moved at various predetermined radii across the peripheral abrasive surface of a radially adjustable grinding wheel rotatable in a plane normal to a plane of movement of the lens blanks. The grinding wheel has a slotted support center with flexible and resilient deformable walls supporting bonded abrasive segments containing alkali insoluble metal coated abrasive in an alkali soluble metal bond and is mounted on an arbor adapted with means to clamp the wheel and to vary the shape of the deformable walls and radius of the wheel. Wheel truing means are provided which heats and rotates the grinding wheel into forceful engagement with an adjustable rotatable truing roll to soften and form the peripheral surface of the wheel to the desired radius which is then dressed by an application of an alkali solution to remove only a sufficient amount of the metal bond to expose the peripheral abrasive elements.

REFERENCES:
patent: 2348132 (1944-05-01), Hyland
patent: 2627707 (1953-02-01), Brooks
patent: 2746217 (1956-05-01), Breisch
patent: 3375181 (1968-03-01), Koech
patent: 3573013 (1971-03-01), Curn
patent: 3879901 (1975-04-01), Caveney

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