Geometric modeling and strength analysis of gear with s-shaped tooth profile and small number of teeth

被引：3
|
作者：
Sun Q. [1 ]
Sun Y. [1 ,2 ]
机构：
[1] Key Laboratory of Mechanism and Equipment Design of Ministry of Education, Tianjin University, Tianjin
[2] Engineering Research Center of Light-Duty Power Machine of Ministry of Education, Tianjin University, Tianjin
来源：
Sun, Yuehai (yuehaisun@tju.edu.cn) | 1600年 / Tianjin University卷 / 49期
关键词：
Gear; Gear with small number of teeth; Involute; S-shaped tooth profile;
D O I：
10.11784/tdxbz201512003
中图分类号：
学科分类号：
摘要：
The large contact stress of involute gear pair with small number of teeth causes a low load-carrying capacity and failure in wide application. To solve this problem, an S-shaped tooth profile was proposed that could achieve concave-convex profile meshing based on sinusoidal rack tool. A curvilinear equation of sinusoidal rack tool was introduced, a mathematical model of S-shaped tooth profile was deduced, and a geometry model of S-shaped tooth profile with small number of teeth was established. Then, the calculation method of induced normal curvature of S-shaped tooth profile was analyzed, simulation analysis on the contact stress of gear pair was conducted by FEM, and finally a comparative analysis on S-shaped tooth profile gear and involute gear with small number of teeth was made. The results show that the S-shaped tooth profile gear pair with mutual conjugate meshing shares the same equation, and one common rack tool or hob can be used to machine them, improving greatly the load-carrying capacity of the gear pair with small number of teeth. © 2016, Editorial Board of Journal of Tianjin University(Science and Technology). All right reserved.
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页码：702 / 708
页数：6
相关论文
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