Ti6Al4V钛合金切削加工的数值模拟
2020-10-23
作者：宋新华1，2，高红旺1，田正芳1，宋斌1
单位：1张家界航空工业职业技术学院；2湖南大学汽车车身先进设计制造国家重点实验室
摘要：采用DEFORM软件建立三维有限元模型对切削过程进行数值模拟，研究了不同切削速度、背吃刀量和进给量的切削用量三要素对切削力F和切削温度θ的影响。结果表明，在切削用量三要素中，对切削力F影响的主次顺序为切削速度＜进给量＜背吃刀量；对切削温度θ影响的主次顺序为背吃刀量＜进给量＜切削速度，模拟结果与之前的试验结果基本吻合。分析切削力和切削温度可预测Ti6Al4V钛合金的最佳工艺参数，对揭示Ti6Al4V钛合金切削加工过程的基本规律具有实际意义。
关键词：Ti6Al4V钛合金；有限元法；切削力；切削温度
中图分类号：TG166.5；TH161文献标志码：ADOI：10.3969/j.issn.1000-7008.2020.07.009
Numerical Simulation of Titanium Alloy Ti6Al4V in Cutting Proce
Song Xinhua，Gao Hongwang，Tian Zhengfang，Song Bin
Abstract:In order to study the cutting mechanism of Ti6Al4V alloys，the threedimensional finite element model of cutting process is simulated by using DEFORM software.The effects of cutting speed，cutting depth and feed rate on cutting force F and cutting temperature θ are analyzed.The original cause of change in cutting force and temperature is analyzed.The simulation results show that the order of influence on the cutting force F is：cutting speed＜feed rate＜cutting depth，the order of influence on cutting temperature θ is：cutting depth＜feed rate＜cutting speed.The optimum cutting process parameters of Ti6Al4V alloy can be predicted by analyzing the cutting force and cutting temperature，it is of practical significance to reveal the basic rules of Ti6Al4V cutting process.
Keywords:Ti6Al4V alloy；finite element method；cutting force；cutting temperature