立式铣削走刀轨迹对工件表面完整性影响的研究  

The Impact of Vertical Milling Tool-Path on the Integrity of Work Piece Surface

作　　者：张德清[1] 罗磊[1] 张泽胤 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《组合机床与自动化加工技术》2015年第9期24-27,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(51175339)

摘　　要：采用有限云仿真与实验结合的方法对铣削过程中走刀轨迹对316L不锈钢材料工件表面完整性的影响进行研究分析。通过Abaqus/Explict有限元建立了三维热-力耦合立铣模型,模拟四种不同走刀轨迹条件下的铣削加工过程,得到工件加工表面残余应力与塑性应变的分布。在仿真分析的基础上设计了相应的铣削加工实验,选定的走刀轨迹和切削参数与有限元仿真一致,并对实验加工得到的表面进行表面形貌、表面硬度和表面粗糙度的测量分析。结合有限元仿真与实验结果研究表明,与其他走刀轨迹相比较,环切式(由外向内)走刀轨迹得到的表面完整性更为理想。The study on the impacton the integrity of work piece surface with different kinds of milling tool-paths is presented by FEM and experimental methods. Firstly, a three-dimensional thermal - mechanical milling model is built by Abaqus/Explict. Four kinds of residual stress and plastic deformation distributionof different tool-paths are analyzed. Secondly, based on the simulationresults, several milling experiments on 316L stainless steel work piece are setup and the surface hardness, roughness and surface topography are measured. With the result of FEM and experimental analysis, itis shown that the more ideal surface integrity with the contour parallel tool-path （ from outside to inside） can be achieved.

关 键 词：走刀轨迹 表面完整性 残余应力 三维立铣建模 

分 类 号：TH162[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]