Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1981-05-15
1983-12-06
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
B24B 2500
Patent
active
044185014
ABSTRACT:
A lapping method and apparatus providing accurate lapping of a workpiece surface and substantially even wear of the lap surface in the course of a lapping operation cycle. The workpiece having a surface to be lapped is held in an oscillating plate reciprocated along a first axis, and displaced at a much lower rate along a second axis. The plate is reciprocated along the first axis by means of a rigid link pivotally attached at one end to the plate and at another end to a rotating eccentric. The plate is displaced along the second axis by means of a pair of rigid parallel links pivotally attached to the plate at one end and pivotally attached each to a rotating eccentric at their other end.
REFERENCES:
patent: 180707 (1876-08-01), Eusminger
patent: 1491101 (1924-04-01), Hoke
patent: 1537658 (1925-05-01), Carhart
patent: 1612470 (1926-12-01), Russ
patent: 4060939 (1977-12-01), Dubied
PTX-Pentronix, Inc.
Whitehead Harold D.
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