摘要
建立了车削过程中进给方向毛刺形成的有限元模型。根据模拟结果,工件终端部形成一次毛刺和二次毛刺,一次毛刺和二次毛刺的形成过程分为正常切削阶段、端部变形阶段、继续切削阶段和毛刺形成阶段,仿真得到的毛刺尺寸和形态与实验结果吻合。根据各个阶段的等效应力和等效应变状态分布模拟结果进一步分析了进给方向毛刺形成的机理,同时分析了一次毛刺和二次毛刺形成过程的异同。
A finite element model was developed to simulate the feed direction burr form in turning,the primary burr and secondary burr were formed on the end of work-piece according to the FE simulation results.The primary burr and the secondary burr form are characterized by four stages,including normal cutting,deformation of end part,continue cutting and burr form.The simulation size and shapes of burr are consistent with the experimental.The mechanism of feed direction burr is analyzed through the effective stress and strain of simulation,and the difference between the primary burr form and the secondary burr form is analyzed.The present finite element model could be used to solve the prediction and mechanism of burr form.
出处
《机械科学与技术》
CSCD
北大核心
2011年第9期1485-1489,共5页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(50275066
50675088)资助
关键词
进给方向毛刺
有限元
一次毛刺
二次毛刺
形成机理
feed direction burr
finite element analysis
primary burr
secondary burr
form mechanism
