大重合度内齿轮齿根齿廓修形及其齿轮啮合特性分析  

Analysis on the tooth profile modification and meshing characteristics of gear root teeth in heavy fit

作　　者：于瑛瑛[1] Yu Yingying(Department of Electromechanic Engineering, Yantai AutomobileEngineering Professional College, Shandong Yantai, 265500, China)

机构地区：[1]烟台汽车工程职业学院机电工程系,山东烟台265500

出　　处：《机械设计与制造工程》2019年第4期124-126,共3页Machine Design and Manufacturing Engineering

基　　金：国家重点研发计划课题基金项目(2017YFC0804704)

摘　　要：为了提高渐开线齿轮的齿形重合度,提出一种大重合度内齿轮齿根齿廓修形设计方法,分析了大重合度齿形重合度、相对法曲率与共轭齿廓相对滑动率,利用有限元加载接触分析方法探讨了内啮合外齿轮的应力分布情况。研究结果表明:大重合度内齿轮和外齿轮形成了共轭齿廓。相对于渐开线齿形重合度,大重合度齿形重合度得到了明显的提升,约为渐开线齿形重合度的3倍。大重合度齿形具有恒定的相对滑动率,并且明显低于渐开线齿形对应的相对滑动率。对受450 N·m力矩作用的大重合度内啮合齿轮进行有限元仿真,结果表明该内啮合齿轮具有较高的齿面接触应力和齿根弯曲应力。In order to improve the contact degree of involute gear, a modified design method for the tooth root profile of internal gear with large contact degree is proposed, and the contact degree, relative normal curvature and relative sliding rate of conjugate tooth profile of internal gear with large contact degree are analyzed. The results show that the conjugate profile is formed by the inner gear and the outer gear. Compared with involute profile, high profile, the coincidence degree of tooth profile are improved obviously, which is about three times of the involute tooth profile coincidence degree. The relative slip rate of the involute profile is lower than that of the involute profile. Finite element simulation of high-contact internal meshing gear subjected to 450 Nom torque shows that the internal meshing gear has higher contact stress and root bending stress.

关 键 词：大重合度 内齿轮 啮合线 加载接触分析 

分 类 号：TH132.417[机械工程—机械制造及自动化]