基于正交试验的MS-WEDM第二次切割工艺参数优化  

Parameter Optimization of the Second Time Cutting Process of MS-WEDM Based on Orthogonal Experiment

作　　者：郭翠霞[1,2] 李贵东 刘康[1,2] 杜睿 杨得胜 GUO Cuixia;LI Guidong;LIU Kang;DU Rui;YANG Desheng(School of Mechanical Engineering,Sichuan University of Science&Engineering,Zigong Sichuan 643000, China;Sichuan Provincial Key Lab of Process Equipment and Control,Zigong Sichuan 643000,China;;Sichuan Fiberglass Group Co.,Ltd.,Deyang Sichuan 618500,China;Zigong Jiate CNC Machinery Manufacturing Co.,Ltd.,Zigong Sichuan 643000,China)

机构地区：[1]四川理工学院机械工程学院,四川自贡643000 [2]过程装备与控制工程四川省高校重点实验室,四川自贡643000 [3]四川省玻纤集团有限公司,四川德阳618500 [4]自贡市嘉特数控机械制造有限公司,四川自贡643000

出　　处：《机床与液压》2018年第23期108-111,共4页Machine Tool & Hydraulics

基　　金：过程装备与控制工程四川省高校重点实验室开放基金项目(GK201702);四川省教育厅基金项目(16ZB0253);四川理工学院国家级大学生创新创业训练计划项目资助(201610622061)

摘　　要：研究MS-WEDM多次切割中第二次切割参数对表面质量和切割速度的影响规律,寻求最优参数组合,有利于提高多次切割的加工质量。采用单因素试验研究第二次切割参数的脉宽、脉间、功放、丝速等参数对表面粗糙度和切割速度的影响规律,选取4水平4因素进行正交试验,用综合评分法将表面粗糙度和切割速度的多目标优化问题转化为加权综合评分的单目标问题。结果表明:更优的加工参数方案为脉冲宽度6μs、脉冲间隔5μs、功放1个、丝速6 m/s,并通过试验验证,其表面粗糙度为1. 54μm,切割速度为149. 43 mm^2/min,加权综合评分为0. 26。The influence of the second time cutting parameters of MS-WEDM multiple cutting on surface quality and cutting speed was studied to find the optimal combination of parameters,which was conducive to improve the quality of multiple cutting.A single factor experiment was used to study the influences of the second cutting parameters on the surface roughness and cutting speed,such as pulse width,inter-pulse,power amplifier,and wire speed.Four levels and four factors were selected for orthogonal test.Multi-objective optimization problem of the surface roughness and the cutting speed was transformed into single objective problem of the weighted comprehensive score by comprehensive evaluation method.The results show that the optimal machining parameters are 6μs pulse width,5μs inter-pulse,1 power amplifier,6 m/s wire speed,and through the test verification,the surface roughness is 1.54μm,cutting speed is 149.43 mm 2/min,the weighted comprehensive score is 0.26.

关 键 词：电火花线切割 第二次切割工艺参数 正交试验 加权综合评分 

分 类 号：TH161[机械工程—机械制造及自动化]