低滑动率摆线正齿轮啮合特性与疲劳寿命研究  

STUDY ON MESHING CHARACTERISTICS AND FATIGUE LIFE OF CYCLOIDAL SPUR GEARS WITH LOW SLIDING RATE

作　　者：许建民 郑庆杰 刘坤 龚晓岩 宋雷 XU JianMin;ZHENG QingJie;LIU Kun;GONG XiaoYan;SONG Lei(School of Mechanical and Automotive Engineering,Xiamen University of Technology,Fujian 361024,China;The High Educational Key Laboratory for Flexible Manufacturing Equipment of Fujian Province(Xiamen Institute of Technology),Fujian 361021,China)

机构地区：[1]厦门理工学院机械与汽车工程学院,福建361024 [2]柔性化装备制造集成福建省高校重点实验室(厦门工学院),福建361021

出　　处：《机械强度》2024年第4期992-998,共7页Journal of Mechanical Strength

基　　金：国家重点研发计划项目(2023YFB3406500);福建省自然科学基金面上项目(2020J01269);柔性化制造装备集成福建省高校重点实验室(厦门工学院)开放课题(pk1fmeik2020002)资助。

摘　　要：为提高齿轮的传动性能,基于啮合线原理提出了一种低滑动率摆线正齿轮。首先通过齿轮啮合原理推导出摆线正齿轮齿廓与过渡曲线方程;然后基于齿廓参数与重合度公式计算得出其最大重合度为3.0134;最后分析了摆线正齿轮啮合过程中的稳定性、接触应力和疲劳寿命。结果表明,高重合度摆线齿轮齿间切向啮合力为1238.2 N,与相同工况下的渐开线标准齿轮相比,减小了5.24%;通过疲劳寿命分析可知,最小疲劳寿命为4.534×10^(6)次,齿面接触应力主要集中在齿轮啮合位置以及齿根部位,因此疲劳破坏易发生于主动轮与从动轮啮合处以及齿根部位。In order to improve the transmission performance of gears,a low sliding rate cycloidal spur gear based on the meshing line principle was presented.Firstly,the equations of gear sub tooth profile and transition curve were derived from the gear meshing principle.Then,the maximum degree of overlap was calculated as 3.0134 based on the gear meshing principle and the overlap equation.Finally,computer simulation was conducted to analyze the stability,contact stress and fatigue life during the meshing process.The results show that the tangential meshing force between the teeth of the high overlap cycloidal gear is 1238.2 N,which is 5.24%smaller than that of the involute standard gear under the same working condition.The fatigue life analysis shows that the minimum fatigue life is 4.534×10^(6)times,and the tooth surface contact stress is mainly concentrated in the gear meshing position and the tooth root part,so the fatigue damage is easy to occur in the driving gear and driven gear meshing and tooth root part.

关 键 词：摆线正齿轮 重合度 滑动率 疲劳寿命 

分 类 号：TH132.46[机械工程—机械制造及自动化]