Grinding or polishing machine for optical lenses

Details Grinding or polishing machine for optical lenses Grinding or polishing machine for optical lenses

1983-03-15

1985-06-04

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

511315, 51215UE, 414225, 414744R, 414758, 414773, B24B 1302, B24B 2900

Patent

active

045205965

ABSTRACT:
A machine is of the type comprising an oscillating movable head with a tool-holding spindle, driven in rotation above a lens-support. The lens-support is borne by a vertically movable spindle which is mounted inside a sleeve, flared out at its upper part to form two bearing surfaces and, the lens-support comprises a ledge which surrounds the part of the sleeve containing the bearing surfaces. The lens-support rests on a head mounted for free rotation in a fixed pivot so that when the spindle is moved upwardly, the lens-support is immobilized in a horizontal position, to deposit the lenses to be polished thereon, or to remove them after the polishing operation. When the spindle is moved downwardly, the lens-support, then at a distance from the bearing surfaces, can oscillate freely during the lens-polishing operation, under the effect of the movable oscillating head.

REFERENCES:
patent: 2704424 (1955-03-01), D'Araucourt
patent: 2933863 (1960-04-01), Doll
patent: 3857205 (1974-12-01), Van Hare
patent: 3889426 (1975-06-01), Blum

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