初始残余应力对齿轮磨削后应力分布的影响  

Influence on Stress Distribution of Initial Residual Stress after Gear Grinding

作　　者：王延忠[1] 李岩[1] 刘旸[1] 赵兴福[2] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]中航工业哈尔滨东安发动机(集团)有限公司工艺技术部,黑龙江哈尔滨150001

出　　处：《新技术新工艺》2016年第8期31-36,共6页New Technology & New Process

基　　金：航空A计划资助项目(ATR-125-02-101);国家自然科学基金资助项目(51275020);国家高科技支撑项目(2014BAF08B01

摘　　要：磨削作为齿轮加工的重要工序,对齿轮的精度和应力分布有决定性的影响,然而大部分关于齿轮磨削的研究极少考虑初始残余应力的影响,使得分析结果的准确度有所降低。利用有限元方法模拟了齿轮的热处理过程,获取了齿轮磨削前的初始残余应力,在此基础上进行了齿轮磨削仿真,得到了考虑初始残余应力的齿面残余应力分布和齿轮变形情况,给出了12Cr2Ni4A齿轮淬火温度的最佳区间。为精确获取齿轮磨削后的应力与变形情况提供了一种方法,同时为优化齿轮的热处理工艺提供了理论参考。As an important working procedure of gear machining, the grinding process has a decisive influence on the precision and stress distribution of the gear. However, most of the research on gear grinding rarely considers the fluence of initial residual stress, which results in lowering the precision of analytical results. Use the finite element method simulating the process of heat treatment of gear and gains the initial residual stress. On the basis, it accomplishes the gear grinding simulation considering the initial residual stress, and gets residual stress distribution and gear deformation distribution of the tooth surface, then also optimizes hardening heat of 12Cr2Ni4A. Offer a method to gain the deformation and stress distribu- tion of the gear after grinding, and provide a theoretical reference for optimizing heat treatment process of the gear.

关 键 词：齿轮磨削 初始残余应力 齿面变形 有限元方法 

分 类 号：TH132.413[机械工程—机械制造及自动化]