聚晶金刚石刀具高速铣削SiC_p/2009Al复合材料工艺参数的优化  

Process Parameter Optimization of PCD Tool during High Speed Milling for SiC_p/2009Al Composites

作　　者：张帅[1] 徐九华[1] 葛英飞[1,2] 傅玉灿[1] 边卫亮[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]南京工程学院机械制造及其自动化江苏省重点建设学科,南京211167

出　　处：《机械工程材料》2011年第12期48-51,106,共5页Materials For Mechanical Engineering

基　　金：国家"863"计划资助项目(2009AA04Z116);江苏省高校自然科学基金资助项目(09KJB460004);航空科学基金资助项目(20090343006)

摘　　要：使用聚晶金刚石(PCD)刀具用正交试验设计法,对不同体积分数碳化硅颗粒增强铝基复合材料进行了高速铣削试验,建立了刀具耐用度和表面粗糙度经验公式,以最低单件成本、最低表面粗糙度、最高刀具耐用度为目标函数,运用遗传算法对高速铣削工艺参数进行了多目标优化。结果表明:增强颗粒体积分数是影响刀具耐用度的最显著因素,切削速度v次之,而每齿进给量fz和径向切削深度aw的影响不显著;诸因素对表面粗糙度影响的显著性从高到底依次为fz、φ、v、aw,优化的工艺参数为切削速度v=760m·min-1,每齿进给量fz=0.08mm,径向切削深度aw=3mm,增强颗粒体积分数φ=17%。High-speed milling tests were carried out on the SiCp/2009Al composites with different volume fractions of SiC particles using polycrystalline diamond （PCD） tools through the method of orthogonal experiments design. The empirical formulas of tool life and surface roughness were established. In order to obtain lowest unit cost, lowest surface roughness and longest tool life, genetic algorithm had been used to optimize the processing parameters. The results show that volume fraction φ of SiC particles had the most remarkable effect on tool life, cutting speed v was the second significant factor, fz and radial aw had no significant effects on tool life. The significance of factors for effecting surface roughness was in sequence of fz, v and aw. The optimized process parameters was v=760 m·min^-1 , fv=0. 08 mm, aw=3mm, φ=17%.

关 键 词：PCD刀具 复合材料 高速铣削 多目标优化 

分 类 号：TG506.1[金属学及工艺—金属切削加工及机床]