Abstract: A method for processing a gear includes a first cutting process starting the cutting of a work by moving a cutter in a first cutting direction while maintaining a cutting depth of the work at a setting value and reducing the cutting depth of the work before a first cutter portion reaches an end portion of a cutting area in the first cutting direction and a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process, maintaining the cutting depth of the work at the setting value, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction.

Abstract: A gear manufacturing device includes a control unit for synchronously rotating a work rotating about a work axis and a cutter rotating about a cutter axis, the work axis and the cutter axis being skew to each other, the control unit relatively moving the cutter and the work in an axial direction of the work with a predetermined cutting depth, and a correction control portion executing at least one of a position correction and a phase correction when an amplitude value of a vibration detected by a vibration sensor 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.

Abstract: A method for processing a gear includes a first cutting process starting the cutting of a work by moving a cutter in a first cutting direction while maintaining a cutting depth of the work at a setting value and reducing the cutting depth of the work before a first cutter portion reaches an end portion of a cutting area in the first cutting direction and a second cutting process synchronously rotating the work and the cutter in a reverse direction of rotational directions of the work and the cutter in the first cutting process, maintaining the cutting depth of the work at the setting value, and cutting the end portion of the cutting area by moving the cutter in a second cutting direction.