| 摘要 |
PROBLEM TO BE SOLVED: To provide a gear in which a bottleneck of a hot thickness flow in forging is improved by providing a flange on a tooth end surface to form fiber flow inside a tooth shape in a dense manner, and the surface pressure fatigue strength and flexure fatigue strength of the gear are improved.SOLUTION: In a gear, fiber flow is formed inside a tooth shape by forging, and a flange is provided on the tooth end surface of a main tooth. |
