Method and apparatus for high precision lapping machines

Details Method and apparatus for high precision lapping machines Method and apparatus for high precision lapping machines

1978-01-04

1980-07-01

Smith, Gary L.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

511659, 5116593, B24B 3702

Patent

active

042099498

ABSTRACT:
A method and apparatus is disclosed for high precision lapping. This high precision is accomplished by the lapping stroke between the lap and the workpiece always having a substantially constant predetermined stroke in one direction and an approximately constant predetermined stroke in the other direction. The approximately constant stroke is accomplished by sensing the contact force between the lap and the workpiece and stopping an engaging stroke therebetween when a predetermined contact force is reached and then starting a constant disengaging stroke. When the substantially constant predetermined disengaging stroke is completed, the engaging stroke begins.

REFERENCES:
patent: 1562587 (1925-11-01), Ranagan
patent: 2128751 (1938-08-01), Krohn
patent: 2787090 (1957-04-01), Peterson
patent: 3487582 (1970-01-01), Hatukano
patent: 3557494 (1971-01-01), Bullen
patent: 3672101 (1972-06-01), Grosseau
patent: 3702043 (1972-11-01), Welbourn
patent: 3848365 (1974-11-01), Bovensiepen
patent: 3903653 (1975-09-01), Imhoff

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