齿轮齿条转向机构虚拟评估与优化关键技术研究  

Research on key technologies of simulation and optimization for gear-rack steering mechanism

作　　者：沈国强[1] 王志刚[1] 万民伟 吴伟 吴欣[1] 金成柱[1] SHEN Guo-qiang;WANG Zhi-gang;WAN Min-wei;WU Wei;WU Xin;JIN Cheng-zhu(School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018;Hangzhou Shibao Auto Steering Gear Co.,Ltd., Hangzhou 310018)

机构地区：[1]杭州电子科技大学机械工程学院,浙江杭州310018 [2]杭州世宝汽车方向机有限公司,浙江杭州310018

出　　处：《机械设计》2018年第6期77-81,共5页Journal of Machine Design

基　　金：浙江省自然科学基金资助项目(LY14E050025);中国博士后基金资助项目(2013M541769);国家自然科学基金资助项目(51475130);浙江省科技计划公益技术研究工业资助项目(2013C31137)

摘　　要：基于经验公式和有限元仿真技术,研究齿轮齿条转向机构在极端工况下的性能评估与优化技术。首先通过与Hertz公式理论计算的对比,验证了接触仿真技术的有效性,进而研究了极端工况下齿轮齿条啮合接触过程。通过对比经验公式与仿真值的差异,发现传统啮合强度校核公式在弹性范围内与有限元仿真数据非常吻合,当材料处于塑性变形阶段时,两者差异较大。最后基于仿真技术对转向器进行了仿真与优化,并对优化后的转向器进行了静扭试验,通过与试验数据对比,验证了仿真技术的有效性。Based on theoretical calculations and finite element simulation technology, performance evaluation and optimization technologies for gear-rack steering mechanism under severe load conditions were research. First, by comparing with theoretical values obtained from the Hertz formula, the effectiveness of the finite element simulation technique was verified. Then,gear-rack meshing process under severe load condition was studied, and by comparing the theoretical data and the simulation data, it was found that the data obtained by using these two methods agrees well under elastic domain, but shows obvious difference when the stress is exceeding yield stress of the gear. Finally, the performance of the gear was simulated and optimized by using the finite element method, and the effectiveness of the simulation method was demonstrated by comparing with the experimental data.

关 键 词：转向 齿轮齿条 仿真 结构优化 接触 

分 类 号：TH122[机械工程—机械设计及理论]