Patent ID: 9623502
Date: 2017-04-18
CPC Classifications: B23F

Claim:
1. A gear machining device for machining tooth bottoms and first and second side surfaces of teeth of a gear by using a machining tool which has a rotation axis inclined relative to a rotation axis of a workpiece and feeding the machining tool relatively in a rotation axis direction of the workpiece by rotating the machining tool in synchronization with a rotation of the workpiece, the gear machining device comprising: a tool state memorizing portion for memorizing tool states each including a position or a posture of the machining tool relative to the workpiece and obtained based on a profile of the machining tool, which includes a tooth bottom tool state memorizing portion for memorizing a tooth bottom tool state for machining the tooth bottom between adjacent teeth of the gear, a first side surface tool state memorizing portion for memorizing a first side surface tool state of the machining tool for machining a first side surface of one of the adjacent teeth facing the tooth bottom and a second side surface tool state memorizing portion for memorizing a second side surface tool state of the machining tool for machining a second side surface of the other of the adjacent teeth facing the tooth bottom; and a machining control portion for controlling machining of the tooth bottoms, the first side surfaces and the second side surfaces under respective tool states of the machining tool memorized in the tooth bottom tool state memorizing portion, the first side surface tool state memorizing portion and the second side surface tool state memorizing portion.