| 摘要 |
Provided is a method of phasing a threaded grinding stone, as well as a gear grinding machine, the aforementioned method and machine being such that the phasing of the threaded grinding stone with respect to a gear to be machined or to a dresser can be performed at high speed. For the purpose of achieving the above, a threaded grinding stone (14) is phased with respect to a workpiece (W) or a disk dresser (32) prior to the engagement of the threaded grinding stone (14) with the workpiece (W) or with the disk dresser (32) during grinding or dressing. In performing this phasing, the phase of the threaded grinding stone (14) is adjusted in such a way that a tooth tip of the workpiece (W) or a blade tip of the disk dresser (32) faces the central position of an edge groove of the threaded grinding stone (14). Subsequently, starting from this rough phasing state, an intermediate phase is obtained by causing an edge surface of the threaded grinding stone (14) to contact an edge surface of the workpiece (W) or an edge surface of the disk dresser (32). Furthermore, the phase of the threaded grinding stone (14) is accurately adjusted so that the tooth tip of the workpiece (W) or the blade tip of the disk dresser (32) is disposed in this intermediate phase.
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