| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for grinding an annular workpiece which can improve the circularity of a thin-wall annular workpiece at a low cost. SOLUTION: The method for grinding the annular workpiece 3 comprises grinding the outer peripheral surface or the inner peripheral surface of an annular workpiece 3, grasped by an electromagnetic chuck mechanism 21, with a grindstone 2 abutted against the outer peripheral surface or the inner peripheral surface and further jetting and supplying a grinding fluid 23 to a site to be ground by the grindstone 2 to grind the outer peripheral surface or the inner peripheral surface of the annular workpiece 3 by a centerless grinding method. According to the method, in a finishing step of a grinding cycle, by reducing an external force which acts on the annular workpiece 3, the deformation amount of the annular workpiece 3 by the external force can be reduced, whereby the circularity of a thin-wall annular workpiece 3 can be improved at low cost. COPYRIGHT: (C)2010,JPO&INPIT
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