精加工中刀具不同前角的有限元模拟研究  

Simulation of Different Tool Rake Angles in Finishing Methods by FEA

作　　者：王明海[1] 王虎军[2] 韩锰 刘中海[2] 

机构地区：[1]哈尔滨工业大学 [2]沈阳航空航天大学 [3]沈阳中之杰流体控制系统有限公司

出　　处：《工具技术》2010年第10期34-37,共4页Tool Engineering

基　　金：APTD-1204支持项目

摘　　要：基于刚塑性有限元方法进行有限元仿真模型的建立,运用自适应网格(ALE)划分法对网格进行重新划分。运用Johnson-cook强化模型和剪切失效模型来定义切屑的形成。运用有限元软件对金属切削进行了二维切削模拟,分析刀具前角对切屑变形、工件表面应力分布、已加工表面质量及刀尖附近加工表面切削温度的分布等的影响。The simulation model is established based on the rigid-plastic FEM,the mesh is remeshed by using adaptive mesh （ALE）technologies,the chip formation is defined by harding model and shear failure model of Johnson-cook. Through applying the simulation of FEA software in two-dimensional cutting process,the influences of rake angels on chip deformation,the distribution of strain on the the workplace,machined surface quality and the distribution of the cutting temperature on the machined surface which near to the tool tip are all have been analyzed.

关 键 词：精加工 前角 有限元分析 切屑变形 

分 类 号：TG501.2[金属学及工艺—金属切削加工及机床] TG702