Patent ID: 7376482
Filing Date: 2008-05-20
Classification: B24B

Abstract:
1. A grinding method in a grinding apparatus which comprises a workpiece support device for supporting a workpiece to be rotatable about an axis, and a wheel head carrying a rotating grinding wheel and wherein the workpiece support device and the wheel head are fed relative to each other in a direction traversing the axis for grinding a machining portion of the workpiece with the grinding wheel at a grinding point, the grinding method comprising steps of: determining rigidity values in respective rotational phases of the machining portion of the workpiece, wherein the rotational phases comprise phases of a single 360° rotation of the workpiece; and grinding the machining portion while controlling the rotational speed of the workpiece about the axis so that the rotational speed of the workpiece is made to be slow for a rotational phase in which the rigidity of the workpiece is low, but to be fast for another rotational phase in which the rigidity of the workpiece is high.