| 摘要 |
PROBLEM TO BE SOLVED: To prevent profile errors of a product gear in a method for machining gear flanks by grinding the gear flanks by making an external gear shape grinding wheel (or an external gear shape workpiece) engage with an internal gear shape workpiece (or an internal gear shape grinding wheel), and by rotating either the grinding wheel or the workpiece so as to make the mating member rotate, and further by reciprocating either the grinding wheel or the workpiece in the axial direction with respect to the mating member. SOLUTION: The relation among a rotational speed of the workpiece, the number of teeth of the workpiece, and a frequency of the axial reciprocation of either the grinding wheel or the workpiece with respect to the mating member are set so that the point of zero grinding speed at the stroke ends of the reciprocation is generated on the workpiece at random. As a result, it is prevented that the portion that cannot be ground because of the zero grinding speed is repeatedly generated at the same position on the workpiece.
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