Abrading – Abrading process – Glass or stone abrading
Patent
1998-03-09
2000-05-23
Eley, Timothy V.
Abrading
Abrading process
Glass or stone abrading
451 65, 451178, 451254, B24B 100
Patent
active
060660317
ABSTRACT:
A wafer to be chamfered is supported in such a manner as to rotate and to move in the X-axis direction and the Y-axis direction which are perpendicular to one another, and a periphery grinding wheel is rotatably placed on the Y-axis. To chamfer a circular part of the wafer, the circular part of the wafer is pressed against the rotating periphery grinding wheel, and then, the wafer is rotated. To chamfer an orientation flat of the wafer, the orientation flat of the wafer is pressed against the rotating periphery grinding wheel, and then, the wafer is fed in the X-axis direction.
REFERENCES:
patent: 5036624 (1991-08-01), Steere, Jr.
patent: 5097630 (1992-03-01), Maeda et al.
patent: 5295331 (1994-03-01), Honda et al.
patent: 5445554 (1995-08-01), Hosokawa
patent: 5538463 (1996-07-01), Hasegawa et al.
patent: 5609514 (1997-03-01), Yssunaga et al.
patent: 5658189 (1997-08-01), Kagamida
Ikeda Kazumi
Noguchi Etsuo
Eley Timothy V.
Nguyen Dung Van
Safran David S.
Tokyo Seimitsu Co. Ltd.
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