Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1986-07-09
1987-12-22
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
5116571, 51 55, 384 12, B24B 4908
Patent
active
047139137
ABSTRACT:
A machine for grinding the cavity in a mold for optical lenses has a spherical grinding tool which is precisely positioned with respect to the center line of a rotary table upon which it is mounted by air slides, which air slides move the tool in orthogonal directions. The carriages of the air slides move relative to center rails. A film of air between the top plate of each air slide and the center rail is supplied at a pressure which supports the weight on the carriage. When precise alignment between the grinding tool and the center line is obtained, a first air supply is cut off and a second air supply is maintained to lock the air slides in the position of alignment.
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patent: 4504048 (1985-03-01), Shiba
patent: 4569562 (1986-02-01), Sato
"Moore Precision Turning and Grinding Machines", Moore Special Tool Co., Inc., 1985.
Corning Glass Works
Kurtz R. E.
Turner B. R.
Whitehead Harold D.
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