| 摘要 |
PROBLEM TO BE SOLVED: To provide a grinder and grinding method by which highly accurate circularity can be achieved.SOLUTION: Since at least one of coolant dynamic pressure Fp and grinding efficiency Z is made different according to a phase &thetas; of a workpiece, a pressing force F(&thetas;) in a notching direction in which an eccentric cylindrical part receives from an abrasive wheel during grinding is made different according to the phase &thetas; and as a result, a deflection amount &egr;(&thetas;) of the eccentric cylindrical part is made different according to the phase &thetas; during the grinding. At this time, the grinder acquires the deflection amount &egr;(&thetas;) of the eccentric cylindrical part during the grinding on the basis of the shape and grinding conditions of the workpiece, calculates a first correction amount D1(&thetas;) with respect to a relative command position between the abrasive wheel and the eccentric cylindrical part on the basis of the deflection amount &egr;(&thetas;), and corrects the relative command position between the abrasive wheel and the eccentric cylindrical part on the basis of the first correction amount D1(&thetas;). |
