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Effects of tooth modifications on the dynamic characteristics of thin-rimmed gears under surface wear
Mechanism and Machine Theory ( IF 5.2 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.mechmachtheory.2020.103870
Yifan Huangfu , Zhifang Zhao , Hui Ma , Hongzheng Han , Kangkang Chen

Abstract Considering the thin rim structure and gear tooth modifications, a three-dimensional wear prediction model is proposed. Unitizing the proposed model, the contact pattern and the wear distribution are analyzed. For gear pairs with asymmetric rim structure, obvious stress concentration will lead to the severe wear on one edge of the gear tooth. Aiming at balancing the wear distribution and reducing vibration, an optimization scheme of the tooth modification (including the tip relief and the helix angle modification) is proposed. After adopting tooth modifications, the severe wear at one edge is almost eliminated. The fluctuation of the transmission error decreases significantly. The dynamic characteristics of thin-rimmed gears over the whole wear process are analyzed. It is found that the tooth modification is beneficial to shorten the running-in period and decelerate the failure process in the period of performance degradation.

中文翻译:

齿面修形对薄边齿轮表面磨损动态特性的影响

摘要 考虑薄轮辋结构和轮齿变形,提出了三维磨损预测模型。结合所提出的模型,分析了接触模式和磨损分布。对于非对称轮辋结构的齿轮副,明显的应力集中会导致轮齿一侧的磨损严重。以平衡磨损分布和减振为目标,提出了齿形修形(包括齿尖后角修形和螺旋角修形)的优化方案。采用改齿后,几乎消除了一侧刃口的严重磨损。传输误差的波动显着减小。分析了薄边齿轮在整个磨损过程中的动态特性。
更新日期:2020-08-01
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