纯铜窄缝式电极电火花线切割加工试验研究  

Research of WEDM Parameters on Machining Narrow Slit Electrode of Pure Copper

作　　者：李文明[1] 张五金[1] 黎振[2] LI Wen-ming;ZHANG Wu-jin;LI Zhen(Department of Mechanical Engineering,Zhonghuan Information College Tianjin University of Technology,Tianjin 300380,China;School of Mechanical Engineering,Tianjin University of Technology and Education,Tianjin 300222,China)

机构地区：[1]天津理工大学中环信息学院机械工程系,天津300380 [2]天津职业技术师范大学机械工程学院,天津300222

出　　处：《机械设计与制造》2021年第5期99-102,共4页Machinery Design & Manufacture

基　　金：教育部高等教育司产学合作协同育人项目(201801086028);天津市普通高等学校本科教学质量与教学改革研究计划项目(171389702B)。

摘　　要：窄缝式电极可以代替凹槽式电极用于电火花成形微凸起结构。为研究纯铜窄缝式电极电火花线切割加工性能的影响规律,以峰值电流、脉冲宽度、脉冲间隔、间隙电压为试验因素,设计进行了正交试验。研究了各试验因素对切缝宽度、切割速度的影响关系,采用信噪比和灰关联度分析方法对多工艺目标进行优化参数组合。试验结果表明:各因素对切缝宽度影响强弱依次为,间隙电压、脉冲宽度、脉冲间隔、峰值电流;对切割速度影响强弱依次为,脉冲宽度、脉冲间隔、间隙电压、峰值电流,其中脉冲宽度、脉冲间隔对切割速度的影响起主导作用。脉冲宽度20μs、脉冲间隔40μs、峰值电流8档、间隙电压6档为最优组合参数,为纯铜窄缝式电极的制作提供理论指导。Instead of grooved electrode,narrow slit electrode could be used in EDM for micro-convex structure.In order to study the influence law of WEDM performance of pure copper narrow slit electrode,orthogonal experiment was carried out with peak current,pulse width,pulse interval and gap voltage as test factors.The influence of test factors on cutting slit width and cutting speed was studied.The method of SNR and grey correlation analysis was used to optimize the parameter combination of multi-objective.The test results showed that the primary and secondary order of factors affecting the cutting slit width is gap voltage,pulse width,pulse interval,peak current.The primary and secondary order of factors affecting the cutting speed is pulse width,pulse interval,gap voltage,peak current,among which pulse width and pulse interval play a leading role.The optimal combination parameters are pulse width 20μs,pulse interval 40μs,peak current 8 range and gap voltage 6 range,which provides theoretical guidance for the fabrication of pure copper narrow slit electrode.

关 键 词：纯铜窄缝式电极 电火花线切割 切缝宽度 切割速度 信噪比 灰色关联度 

分 类 号：TH16[机械工程—机械制造及自动化] TG661[金属学及工艺—金属切削加工及机床]