Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1986-04-21
1989-03-14
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
511313, 51217T, 51240T, 51277, B24B 500
Patent
active
048115231
ABSTRACT:
An apparatus for fine machining of plane surfaces of disk-shaped workpieces having an unmachined bearing side and a slight wall thickness is described. The apparatus is provided with a chuck, preferably realted, for receiving the workpiece and a cup wheel. To assure that the pieces are supported over a defined and sufficiently large area to prevent both tilting during the machining and bending due to the machine pressure, so that a surface of highly accurate shape is attainable, the chuck for receiving the workpiece is provided with three fixed support pins distributed over the circumference and against which the workpiece is pressed. Between the three fixed support pins, a plurality of further support elements are provided, which can be supportingly fixed against the bearing side of the workpiece once the workpiece has been placed upon the three fixed support pins.
REFERENCES:
patent: 2573668 (1951-10-01), Long et al.
patent: 4213698 (1980-07-01), Firtion et al.
patent: 4357006 (1982-11-01), Hayes
patent: 4693035 (1987-09-01), Doyle
Konken Johann
Schmitz Heinz-Gunter
Rachuba Maurina
Schmidt Frederick R.
Supfina Maschinenfabrik Hentzen KG
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