准静态工况下渐开线直齿轮齿面磨损建模与分析

发布时间：2018-06-01 00:26

本文选题：直齿轮 + 齿面磨损　；参考：《机械工程学报》2017年05期

【摘要】：根据Hertz理论和Archard磨损公式,建立面向真实工况的直齿圆柱齿轮准静态磨损模型,并对其齿面磨损特性进行了数值仿真。计算表明,理想工况下直齿轮副齿面沿齿宽方向均匀磨损,其在节圆附近的磨损量最小,而在小齿轮靠近齿根部位的磨损量最大;当存在啮合偏差时,齿面磨损深度沿齿向不再均布。在此基础上,进一步分析了负载工况和磨损循环次数对齿面磨损量的影响。分析表明,负载转矩和循环次数对齿面磨损量影响显著,近似呈指数映射关系。当以减磨延寿为齿轮设计目标时,必须计入负载工况和齿轮役期的影响。最后,分析了齿轮啮合偏差和微观修形对齿面磨损量的影响。研究表明,从改善齿面载荷分布和减缓齿面磨损角度考量,应严控齿轮啮合偏差量,并可通过制定合适的齿面修形策略来减缓齿面磨损失效。
[Abstract]:According to Hertz's theory and Archard's wear formula, a quasi-static wear model of spur cylindrical gear under real working conditions is established, and its tooth surface wear characteristics are numerically simulated. The calculation results show that the tooth surface of spur gear pair is uniformly worn along the width of the tooth under ideal working conditions, and the wear amount near the pitch circle is the smallest, while the wear amount near the tooth root is the largest in the pinion gear, and when there is a meshing deviation, The tooth surface wear depth is no longer uniformly distributed along the tooth direction. On this basis, the influence of load condition and wear cycle number on tooth surface wear is further analyzed. The analysis shows that the load torque and cycle times have a significant effect on the tooth surface wear, and approximate exponential mapping relationship. The effect of load condition and gear service period must be taken into account when reducing wear and prolonging life of gear. Finally, the influence of gear meshing deviation and micro modification on tooth surface wear is analyzed. The research shows that the gear meshing deviation should be strictly controlled from the angle of improving the load distribution of the tooth surface and reducing the tooth surface wear, and the tooth surface wear failure can be alleviated by making the appropriate profile modification strategy.
【作者单位】：安徽工业大学机械工程学院;
【基金】：国家自然科学基金(51375013,51405003) 安徽省自然科学基金(1208085ME64)资助项目
【分类号】：TH132.41

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