基于最优修形设计的变速器齿轮性能优化  

PERFORMANCE OPTIMIZATION OF TRANSMISSION GEAR BASED ON OPTIMAL MODIFICATION DESIGN

作　　者：韩炜 任智群 HAN Wei;REN ZhiQun(Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China;Hubei Collaboration Innovation Center for Automotive Components,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学现代汽车零部件技术湖北省重点实验室,武汉430070 [2]武汉理工大学汽车零部件技术湖北省协同创新中心,武汉430070

出　　处：《机械强度》2020年第5期1130-1136,共7页Journal of Mechanical Strength

基　　金：国家科技部863基金项目(2011AA11A260);国家重点研发计划(2017YFB0103900)资助。

摘　　要：以某款五挡变速器的齿轮传动机构为研究对象,利用Romax Designer软件,建立了该变速器齿轮传动机构的仿真模型,并对修形前4挡齿轮的承载情况、传递误差和齿面载荷分布情况进行了仿真分析。根据齿轮齿向修形和齿廓修形的理论,利用正交试验原理分析4挡齿轮三维修形参数的变量范围,然后利用遗传算法对齿轮修形参数实施优化,得到最优的齿轮修形参数组合,并利用整车试验验证了这一方法的有效性。对比优化前后的结果可知,利用齿轮三维修形技术可以较大程度地降低齿轮承受的应力,降低齿轮传递误差的波动幅值,优化齿轮齿面的应力分布情况,降低振动噪声。同时也能够证明利用此方法可以有效地改善齿轮的啮合情况,是优化齿轮啮合性能的有效手段。Taking the gear transmission mechanism of a five-gear transmission as the research object,the simulation model of the gear transmission mechanism of the transmission is established by using Romax Designer software,and the load-bearing situation,transmission error and load distribution on the tooth surface of the 4 th gear are simulated and analyzed.According to the theory of tooth lead modification and tooth profile modification,the variable range of three-dimensional modification parameters of the 4 th gear is analyzed by orthogonal experiment principle.Then the genetic algorithm is used to optimize the modification parameters of gear,and the optimal combination of modification parameters is obtained.The validity of this method is verified by vehicle test.By comparing the results before and after optimization,it can be seen that the three-dimensional gear modification technology can greatly reduce the stress of the gear,reduce the fluctuation amplitude of the transmission error of the gear,optimize the stress distribution of the gear tooth surface,and reduce the vibration noise.At the same time,it can be proved that this method can effectively improve the meshing condition of gears and is an effective means to optimize the meshing performance of gears.

关 键 词：变速器 齿轮修形 传递误差 遗传算法 性能优化 

分 类 号：TH132.41[机械工程—机械制造及自动化]