| 摘要 |
PROBLEM TO BE SOLVED: To provide a grinding technology (grinding device and method for grinding) enlarging a grinding wheel size (diameter size) and enabling preventing quick deterioration of grinding accuracy by extending a lifetime of the grinding wheel and shortening the grinding time of a bearing race ring (body to be ground) and improving grinding efficiency by raising the peripheral speed. SOLUTION: In the grinding device including two rotating members 22a, 22b contacting the body to be ground 20 in a state rotating around predetermined axes and rotating the body to be ground, one supporting member 24 supportingly positioning the body to be ground rotated, and the grinding wheel 26 that is made to pressingly contact a treatment object surface 20s of the body to be ground in a state not contacting the two rotating members and grinds the treatment object surface, at least one of the two rotating members contacts the body to be ground on both sides or on one side only of the grinding wheel in the axial direction with a position of the grinding wheel with respect to the predetermined axial direction taken as a reference. COPYRIGHT: (C)2010,JPO&INPIT
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