Importance

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Abstract

[Problem] To provide a gear machining device enabling machining by a plurality of tools with a simple configuration. [Solution] A gear machining device according to the present invention includes: a base; a tool support unit that is disposed on the base, and has internal gear-shaped first and second tools; a workpiece support unit that is disposed on the base, and rotatably supports a gear to be machined; and a control unit that controls driving of the tool support unit and the workpiece support unit, the first tool and the second tool are immovably fixed at an interval in an axial direction of each of the first tool and the second tool; each of the first and second tools machines while meshing with the gear to be machined, the workpiece support unit is relatively movable with respect to the tool support unit in a first direction along an axial direction of the gear to be machined, the workpiece support unit is relatively movable with respect to the gear to be machined in such a second direction as to approach and separate from the first and second tools, the tool support unit is rotatable around a vertical axis extending vertically on the base, and the control unit sets one of the first tool and the second tool as a tool for machining that machines the gear to be machined, and machines the gear to be machined after moving the tool for machining to such a position that the tool for machining meshes with the gear to be machined.

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First Claim