Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1991-04-01
1993-04-13
Rachuba, M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
5116572, 51 76R, 51105R, 51 3, 51289R, B24B 4900
Patent
active
052011453
ABSTRACT:
A monocrystal ingot conveying/surface grinding apparatus has a plurality of surface grinding devices 221A to 225A disposed serially, a rail 16A disposed adjacent to the ceiling along the devices, a conveying/attitude-adjusting device 20A guided by the rail 16A and having an X-Y-.theta.-.phi. stage 24 and conveyers 14 and 23 disposed below an end portion of the rail 16A and arranged to convey monocrystal ingots 10 before they are ground. The attitude of the monocrystal ingot 10 is adjusted so as to make the grinding rotation center of the monocrystal ingot 10 coincide with the center of each of clamp rotational shafts 70A and 70B of each of the surface grinding devices 221A to 225A. Furthermore, the surfaces of the monocrystal ingots 10 are ground to form cylindrical shapes by the surface grinding devices 221A to 225A, the monocrystal ingots 10 being conveyed by the conveying/attitude-adjusting device 20A and the conveyers 14 and 23. Endoscopes 82A and 82B are inserted into through holes 79A and 79B formed in the shaft core portions of the rotational clamp shafts so that the two end surfaces of the monocrystal ingot 10 are imaged by cameras 84A and 84B.
REFERENCES:
patent: 4651472 (1987-03-01), Scheder et al.
patent: 4879846 (1989-11-01), Menard et al.
patent: 4951422 (1990-08-01), Ibe et al.
patent: 5007204 (1991-04-01), Ibe et al.
Rachuba M.
Shin-Etsu Handotai Company Limited
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