叶轮叶片铣削残余应力模型的建立与验证  

Establishment and Verification of Milling Residual Stress Model for Impeller Blade

作　　者：王延忠[1,2] 张亚萍 吴泽刚 陈燕燕 WANG Yan-zhong;ZHANG Ya-ping;WU Ze-gang;CHEN Yan-yan(School of Mechanical Engineering and Automation of Beihang University,Beijing 100191,China;School of Mechanical and Electrical Engineering of Sanming University,Fujian Sanming 365004,China;Technology Department of Avic Harbin Dong'an Engine(Group)Co.,Ltd.,Heilongjiang Harbin 150001,China)

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]三明学院机电工程学院,福建三明365004 [3]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：《机械设计与制造》2021年第6期118-121,共4页Machinery Design & Manufacture

基　　金：航空发动机长寿命齿轮典型加工工艺可靠性建模分析技术(6140002050116HK01002)。

摘　　要：叶轮的疲劳危险部位处于分流叶片前缘,而决定分流叶片前缘残余应力的主要工序是叶片铣削加工。为了模拟叶片铣削过程中的残余应力状态,本文结合材料特性、刀具设计以及加工过程,完成了球头铣刀的三维建模。在此基础上考虑金属动态变形、材料失效、接触摩擦以及力热变换等因素,建立了叶轮叶片的铣削残余应力仿真计算模型,并对模型进行了试验验证。不同刀轴倾角下样件表面试验残余应力与仿真残余应力整体变化趋势一致,表明模型可靠。The fatigue dangerous part of the impeller is in the leading edge of the shunt blade,and the main process determining the residual stress in the leading edge of the shunt blade is blade milling.In order to simulate the residual stress state in the process of blade milling,the three-dimensional modeling of ball-end milling cutter was completed based on material characteristics,tool design and machining process.On this basis,considering the dynamic deformation of metal,material failure,contact friction and thermodynamic transformation,the milling residual stress model of impeller blade is established and verified by experiments.The experimental residual stresses on the surface of the sample at different inclination angles of tool axes are consistent with the simulated residual stresses,which indicates that the model is reliable.

关 键 词：叶轮叶片 铣削 残余应力 仿真模型 验证 

分 类 号：TH16[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]