机械式变速器齿轮啮合周期接触载荷及应力分析  

Analysis of Periodic Contact Load and Stress of Gear Meshing of Mechanical Transmission

作　　者：甄帅[1] ZHEN Shuai(Chuzhou Vocational and Technology College,Chuzhou Anhui 239000,China)

机构地区：[1]滁州职业技术学院,安徽滁州239000

出　　处：《重庆科技学院学报（自然科学版）》2023年第5期89-93,107,共6页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：安徽省高校自然科学研究重点项目“智能果蔬一体机创新设计及运动特性研究”(KJ2020A0996),“机器人软体夹持器设计及运动特性研究”(KJ2019A1135)。

摘　　要：当机械式变速器齿轮存在边缘接触时,就会产生一定的干扰信号,严重影响其啮合周期接触应力的分析效果。为此,提出机械式变速器齿轮啮合周期接触载荷及应力分析。通过Pro/E建模软件对齿轮展开参数化建模处理,定义齿轮的接触属性,施加接触载荷,从静态和动态2方面对齿轮啮合周期接触应力进行分析,计算齿轮不同状态下的接触应力。静态下的齿轮啮合接触可直接输出分析结果;对于动态下的齿轮啮合接触,首先需要确定每一帧变化的最大等效应力,然后完成整体应力分析。实验结果表明:在齿轮存在边缘接触的情况下,此方法的计算时间在100 s以内,最高计算误差为1.7%,应力变化模拟较准确,抗干扰性较强。In the analysis of periodic contact stress of gear meshing in mechanical transmission,when there is edge contact in the gears,a certain interference signal will be generated,which seriously affects the analysis effect.Therefore,a periodic contact load and stress analysis of gear meshing in mechanical transmission is proposed.Pro E modeling software is used to develop parametric modeling of gears.After the gear parameters are input,the size of the gear is determined by using the relationship calculation formula,the contact attribute of the gear is defined and the contact load is applied.On this basis,the periodic contact stress of gear meshing is analyzed from both static and dynamic aspects,and the contact stress under different states of the gear is calculated.For the static gear meshing contact,the analysis results can be directly output.For the dynamic gear meshing contact,it is first necessary to determine the maximum equivalent stress for each frame change to complete the overall stress analysis.The experimental results show that the calculation time of the proposed method is less than 100 s,the maximum calculation error is 1.7%,the stress change simulation is accurate,and the overall anti-interference performance is improved in the case of gear edge contact.

关 键 词：机械式 变速器 齿轮 啮合周期 接触载荷 应力分析 

分 类 号：TH132[机械工程—机械制造及自动化]