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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 3    March 2016

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Tooth surface geometry optimization of spiral bevel and hypoid gearsgenerated by duplex helical method with circular profile blade
ZHANG Yu(张宇)1, YAN Hong-zhi(严宏志)1, ZENG Tao(曾韬)1, 2, ZENG Yi-yu(曾亦愚)2

1. State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410012, China;
2. Changsha HaliangKaishuai Precision Machinery Co. Ltd., Changsha 410100, China

Abstract:In order to effectively improve meshing performance of spiral bevel and hypoid gears generated by the duplex helical method, the effects of straight lined and circular cutting edges profile on meshing and contact of spiral bevel and hypoid gears were investigated analytically. Firstly, a mathematical model of spiral bevel and hypoid gears with circular blade profile was established according to the cutting characteristics of the duplex helical method. Based on a hypoid gear drive, the tooth bearings and the functions of transmission errors of four design cases were analyzed respectively by the use of the tooth contact analysis (TCA), and the contact stresses of the four design cases were analyzed and compared using simulation software. Finally, the curvature radius of the circular profile blade was optimized. The results show that the contact stresses are availably reduced, and the areas of edge contact and severe contact stresses can be avoided by selecting appropriate circular blade profile. In addition, the convex and concave sides are separately modified by the use of different curvature radii of inside and outside blades, which can increase the flexibility of the duplex helical method.

 

Key words: circular blade profile; duplex helical method; spiral bevel and hypoid gears; modification; contact stress

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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