涂层刀具铣削Ti6Al4V刀具寿命及切削参数优化  

Research on Tool Life in Ti6Al4V Milling with Coated Carbides and Cutting Parameter Optimization

作　　者：王晓琴[1,2] 艾兴[1] 赵军[1] 郭培全[2] 

机构地区：[1]山东大学机械工程学院,济南250061 [2]济南大学机械工程学院,济南250022

出　　处：《武汉理工大学学报》2008年第10期109-112,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50575126);全国优秀博士学位论文作者专项资金(200231);济南大学实验技术研究项目(XJ200619)

摘　　要：对涂层硬质合金刀具高速干铣削Ti6Al4V进行了正交试验,获得了刀具寿命的经验公式,并利用扫描电镜(SEM)和能谱(EDS)分析了刀具的磨损形态和磨损机理,粘结、扩散及氧化是涂层刀具的主要磨损机理。最后,利用等寿命-效率响应曲面法,对刀具铣削Ti6Al4V的切削参数进行了优化。效率不变的情况下,低速大切深可提高刀具寿命。A series of orthogonal milling tests was carried out in higher speed scale with coated carbides. The experiential function of tool life based on orthogonal experiment was developed. Then, the tool wear morphologies were examined by SEM and EDS, adhesion, diffusion and oxidation were the major wear mechanisms of coated carbides tool. Finally, the cutting parameters of coated carbide in Ti6Al4V dry milling were optimized based on tool life-efficiency contour analysis, the lower cutting speed and lager depth of cut are the better selection.

关 键 词：TI6AL4V 涂层硬质合金 刀具磨损 刀具寿命 切削效率 

分 类 号：TH117[机械工程—机械设计及理论] TG506.1[金属学及工艺—金属切削加工及机床]