| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite gear cutting tool capable of increasing productivity while stably ensuring accuracy of a gear shape (a gear to be cut) applied to a material to be cut.SOLUTION: A plurality of rough cutting blades 3a are provided at the outer periphery of a gear-shaped skiving part 3 around an axis O of a tool 1. A plurality of finish cutting blades 4a are provided at the outer periphery of a gear-shaped shaving part 4 around the axis O. Serration grooves are formed on both tooth surfaces of the finish cutting blades 4a respectively. The skiving part 3 and the shaving part 4 are arranged coaxially side by side in a direction of the axis O. The plurality of rough cutting blades 3a and the plurality of finish cutting blades 4a have the same number of teeth, and the corresponding cutting blades 3a, 4a are disposed continuously in a tooth trace direction. |
