DOUBLE SURFACE GRINDING DEVICE FOR THIN DISK-SHAPED WORK PIECE

Japanese Patent JP3673904

B2

PROBLEM TO BE SOLVED: To provide a device capable of simultaneously and easily grinding both surfaces of a thin disk-shaped work piece and capable of being downsized.
SOLUTION: A double surface grinding device is provided with a pair of grinding wheels 8, 9, and a work piece rotating device for supporting and rotating a work piece W so that the machining surfaces (b) of both surfaces of the work piece W may face the circular grinding surfaces of the grinding wheels 8, 9 and a part of the outer periphery of the work piece W and the center (c) may be positioned inside the outer peripheries of the grinding wheels. The work piece rotating device is, provided with a pair of position holding belts 21, 22 for pinching a part of the work piece W projecting from between the grinding wheels 8, 9 from both sides in the radial direction and for moving it in the circumferential direction of the work piece W, grooves 23 for supporting the work piece W in the axial and radial directions by fitting the outer periphery of the work piece W are provided on respective belts 21, 22, and at least one of the belts 21, 22 is a driving belt for rotating the work piece W by being rotated in the circumferential direction of the work piece W.

JPH09192993	VERTICAL TWIN HEAD SURFACE GRINDING MACHINE
JP2001162524	POLISHING METHOD
JP2010179395	MANUFACTURING METHOD FOR GLASS SUBSTRATE

Toshio Ishii

JP32259596A

July 20, 2005

December 03, 1996

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Koyo Machine Industry Co., Ltd.

B24B7/17; (IPC1-7): B24B7/17

JP5292188A
JP5277911A

Einosuke Kishimoto
Moriichi Kishimoto
Akira Watanabe
Norihiko Hibi

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