车齿成形齿面接触性能数值仿真与分析  

Contact Performance Numerical Simulation and Analysis of Gear Skiving

作　　者：陈永鹏 肖磊 Chen Yongpeng;Xiao Lei(School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074

出　　处：《机械传动》2024年第1期14-19,27,共7页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(52205446);重庆市自然科学基金项目(cstc2021jcyj-msxm1096)。

摘　　要：车齿工艺具有材料去除率高、成形精度好等优点,且能实现内齿轮等特殊结构齿轮的高效加工,推进车齿工艺精加工可以有效提高生产率并降低成本。然而,由于车齿成形齿面存在进给刀痕,齿面接触性能尚未明晰。首先,根据车齿工艺运动学原理,构建了车齿成形非光滑齿面的齿轮实体模型;然后,基于有限元方法对非光滑齿面的接触应力进行了仿真计算,并与国际标准推荐的齿轮承载能力计算结果进行了对比验证;最后,分析了进给量以及螺旋线修形系数对齿轮接触应力的影响规律。结果表明,车齿成形齿面接触应力与进给量呈非线性正相关;而螺旋线修形对齿面接触应力极值影响较小,但对应力分布区域影响显著。Gear skiving process has the advantages of high material removal rate,good forming accuracy and so on,and can realize the efficient machining of gears with special structure such as inner gears.It can effec⁃tively improve productivity and reduce cost by advancing the finishing process of gears.However,due to the presence of feed marks on the forming tooth surface,the contact performance of the tooth surface is not clear.In this study,firstly,according to the kinematic principle of gear skiving,a solid model of gears with non-smooth tooth surface is constructed.Then,the contact stress of non-smooth tooth surface is simulated by the finite ele⁃ment method,and the results are compared with the calculation results of the bearing capacity of gears recom⁃mended by international standards.Finally,the influences of feed and tooth modification coefficient on gear con⁃tact stress are analyzed.The results show that there is a nonlinear positive correlation between the contact stress and the feed.The tooth modification has little effect on the extreme value of contact stress,but has significant ef⁃fect on the stress distribution area.

关 键 词：车齿 有限元分析 接触应力 工艺参数 

分 类 号：TG61[金属学及工艺—金属切削加工及机床]