斜齿轮动力接触分析及动态特性优化  

Dynamic Contact Analysis and Optimization of Dynamic Characteristic of Helical Gear

作　　者：杨钢[1] 

机构地区：[1]重庆交通大学机电与汽车工程学院,重庆400074

出　　处：《机械传动》2013年第6期64-68,共5页Journal of Mechanical Transmission

摘　　要：以某斜齿轮副为例,建立了该齿轮副的参数化三维几何模型及动力接触有限元分析模型。采用显式动力学计算方法对轮齿动态等效应力、齿根弯曲应力、主从动轮的相对转速及冲击力等动力学特性进行了数值仿真。分析表明,轮齿在啮合过程中存在较大的啮合冲击;主从动轮间有明显的转速差,且从动轮负载转矩越大,冲击力就越大。同时对齿廓修形与齿轮副动态特性间的关系进行了详细研究,并基于计算数据提出了改善齿轮副冲击与齿根应力的最佳修形参数,以达到优化其动态特性的目的。Taking a helical gear pair as an example, the parametric three - dimensional geometric model and dy- namic contact finite element analysis model of the helical gear pair are established. Based on the explicit dynamic cal- culation method, some dynamic characteristic are got by the numerical simulations, such as the tooth dynamic equiva- lent stress, tooth root bending stress, relative speed and impact force. The results show that it has a greater meshing impact during the meshing process, and obvious speed difference between driving wheel and driven wheel, the greater load torque of driven wheel, the greater the impact force becomes. At the same time, the relationships between modifi- cation of the tooth profile and the dynamic characteristics of gear pair is also studied in detail, and based on the nu- merical simulation data, the best parameters which could improve impact and tooth bending stress of gear pair are pro- posed in order to optimize the dynamic characteristics.

关 键 词：斜齿轮 动力特性 修形 有限元法 

分 类 号：TH132.41[机械工程—机械制造及自动化]