Gear manufacturing device and method for manufacturing gear

摘要

A gear manufacturing device includes a control unit (D) for synchronously rotating a work (1) rotating about a work axis (T) and a cutter (10) rotating about a cutter axis (S), the work axis (T) and the cutter axis (S) being skew to each other, the control unit (D) relatively moving the cutter (10) and the work (1) in an axial direction of the work (1) with a predetermined cutting depth, and a correction control portion (36) executing at least one of a position correction and a phase correction when an amplitude value of a vibration detected by a vibration sensor (15) during a machining reaches equal to or greater than a set value, the position correction for correcting a relative positional relationship in a direction to correct the cutting depth, the phase correction for correcting a relative phase in a direction to correct an unbalance cutting that is otherwise to be applied on a pair of tooth surfaces formed on the work (1).