渐开线直齿圆柱齿轮增速传动和减速传动齿根弯曲应力对比分析  

Comparison of Tooth Bending Strength of Speed-increasing and Speed-reducing Involute Spur Gears

作　　者：王鹏[1,2] 杨策 郭琢 林家春[1,2] 石照耀[1,2] WANG Peng;YANG Ce;GUO Zhuo;LIN Jiachun;SHI Zhaoyao(Beijing Engineering Research Center of Precision Measurement Technology and Instruments(Beijing University of Technology),Beijing 100124;Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124)

机构地区：[1]北京工业大学北京市精密测控技术与仪器工程技术研究中心,北京100124 [2]北京工业大学材料与制造学部,北京100124

出　　处：《机械工程学报》2023年第5期130-141,共12页Journal of Mechanical Engineering

基　　金：国家自然科学基金资助项目(51775003,52075006)。

摘　　要：增速传动齿轮是风力发电机等各类增速齿轮传动系统中的关键零件,其设计和修形主要参考减速传动齿轮来进行。由于啮合点处滑动摩擦力的影响,增速传动齿轮的啮合特性与减速传动齿轮存在较大的差异,因而减速传动齿轮的设计制造经验不能直接应用于增速传动齿轮。以应用最广泛的渐开线直齿圆柱齿轮为研究对象,运用危险截面法和有限元啮合仿真方法,进行了增速传动和减速传动轮齿弯曲应力的对比分析研究。结果表明,相同传动功率条件下,与减速传动相比,增速传动大轮在齿根啮合区对应的弯曲应力减小,而齿顶啮合区对应的弯曲应力增大,最大增幅达27.8%;增速传动小轮弯曲应力的变化趋势与大轮相反。研究工作为增速传动齿轮的设计和修形及建立面向增速传动齿轮的设计方法提供了重要的理论支撑。Speed-increasing gears are key parts of many gear transmission systems,for instance,wind turbine gearboxes.Due to the friction force between contacting gear tooth surfaces,the meshing characteristics between speed-increasing and-reducing gear pairs are different,therefore,the knowledge and experience of the former cannot be directly applied to the latter.Based on the most widely used involute spur gears,employing the bending strength calculation standards and Abaqus software,the tooth bending stress under speed-increasing and-reducing cases are analyzed and compared.The comparison shows that,with the same transmission power,the maximum speed-increasing bending stress of the gear will decrease for the dedendum area,and increase for the addendum area by 27.8%,compared with the speed-reducing case.On the contrary,the bending stress of pinion will increase for the dedendum and decrease for the addendum.This work will help to develop a new approach for the design and modification of speed-increasing gears.

关 键 词：增速传动 齿根弯曲应力 渐开线直齿圆柱齿轮 滑动摩擦力 啮合特性 

分 类 号：TH132[机械工程—机械制造及自动化]