铣削γ-TiAl球头立铣刀几何角度优化设计  

Research on Geometry Parameters Optimization of Ball-end Milling for Machiningγ-TiAl Alloy

作　　者：郝涛 汪振华[1] 胡宏宇 Hao Tao;Wang Zhenhua;Hu Hongyu(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京市210094

出　　处：《工具技术》2023年第7期116-120,共5页Tool Engineering

摘　　要：钛铝合金具有良好的物理和力学性能,在航空航天及汽车领域具有广泛的应用前景。由于其高温强度高、导热率低及室温脆性等特性,加工时存在切削力较大、切削温度高等问题,是一种典型的难加工材料,因此开发一款针对该种材料加工的球头立铣刀具有十分重要的意义。本文通过三维有限元仿真技术,以降低铣削力和铣削温度为优化目标,求得球头铣刀前角、螺旋角和后角三个几何参数的最优组合;分析这三个几何参数对切削力和切削温度的影响,实现刀具几何参数的优化设计。γ-TiAl Alloy has a wide range of application prospects in the aerospace and automotive fields because of its great physical and mechanical properties.However,due to its high temperature strength,low thermal conductivity,room temperature brittleness and so on,there are problems such as large cutting force and high cutting temperature during machining,it makesγ-TiAl become a typical material which is difficult to machine.Therefore,it is of great significance to develop a ball-end mill for this kind of material.In this paper,three-dimensional finite element simulation technology is used to obtain the optimal combination of three geometric parameters of ball-end mill,the optimization objective is to reduce the milling force and milling temperature.The influence of three geometric parameters on the cutting force and cutting temperature is analyzed,and the optimal design of the geometric parameters of the ball-end mill is realized.

关 键 词：球头立铣刀 Γ-TIAL DEFORM-3D 几何参数优化 切削力 切削温度 

分 类 号：TG714[金属学及工艺—刀具与模具] TH162[机械工程—机械制造及自动化]