基于响应曲面法电火花线切割回转零件实验研究  

Experimental Study on the Wire Electrical Discharge Machining of Rotary Parts Based on the Response Surface Method

作　　者：巩亚东[1] 马晓腾 孙瑶[1] GONG Ya-dong;MA Xiao-teng;SUN Yao(School of Mechanical Engineering ＆ Automation,Northeastern University,Shenyang 110819,China.)

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2018年第7期1005-1010,共6页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51375082)

摘　　要：以低速走丝电火花线切割加工回转铜钨合金(Cu W70)试件为研究对象,采用Design-Expert软件设计Box-Behnken实验,利用响应曲面法分析得出不同速度参数对工件表面粗糙度及材料去除率的影响规律,并得出兼顾加工效率与表面质量的最优工艺参数组合.结果表明,速度参数对表面粗糙度影响的主次关系为工件转速>进给速度>走丝速度;对材料去除率影响的主次关系为进给速度>工件转速>走丝速度.多目标参数优化得出:当工件转速为46 r/min,进给速度为1.0 mm/min,走丝速度为45 mm/s时,表面粗糙度达到0.882μm,材料去除率达到0.625 mm3/min.The low speed wire electrical discharge machining（ LS-WEDM） method was used to fabricate the rotary CuW70 workpiece. Box-Behnken experiment of CuW70 was designed with Design-Expert software,and the response surface method was used to analyze the influencing rule of different speed parameters on surface roughness and material removal rate. Then the optimized machining parameters for high machining efficiency and precision were obtained. The results showed that the influencing order of speed parameters on the surface roughness is followed by rotating speed,feeding speed and wire speed. And the influencing order of speed parameters on material removal rate is followed by feeding speed,rotating speed and wire speed. The multiobjective optimizing results indicated that when the rotating speed is 46 r/min,the feeding speed is1. 0 mm/min,and the wire speed is 45 mm/s,the surface roughness is 0. 882 μm and the material removal rate is 0. 625 mm^3/min.

关 键 词：低速走丝电火花线切割 铜钨合金 响应曲面法 表面粗糙度 材料去除率 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]