强化碎屑排屑策略提高往复走丝电火花线切割加工效率的研究  

Study on Strengthen Chip comminuting and removal Strategy to Improve Machining Efficiency of Reciprocated-WEDM

作　　者：何赐文 赵晋胜 何良贞 翟杨 HE Ciwen;ZHAO Jinsheng;HE Liangzhen;ZHAI Yang(Beijing Dongxing Lubricant Limited Company,Beijing 100102,China;Institute of Science and Technology Information,Beijing Academy of Science and Technology,Beijing 100089,China)

机构地区：[1]北京东兴润滑剂有限公司,北京100102 [2]北京市科学技术研究院科技情报研究所,北京100089

出　　处：《电加工与模具》2023年第1期22-25,43,共5页Electromachining & Mould

摘　　要：首先,采用30 000帧/s高速摄像观测记录、分析电火花线切割加工过程的微观状态,确定影响高速切割加工的关键影响因素;接着,采用具有好的包裹性和容纳性的水溶性放电介质,实施了同时向极间叠加低频放电脉冲和高频放电脉冲的火花放电控制策略,构成强化碎屑排屑方法;然后,通过粒度分布测试对比分析了不同放电控制策略的切割加工效果;最后,确定纳秒和微秒两级高频放电脉冲叠加控制策略是提高碎屑能力和排屑能力的有效方法,结合采用双丝筒长丝系统,可显著提高往复走丝电火花线切割的切割效率。First,using 30 000 frames/s high-speed camera observation to record and analyze the micro-state of the EDM wire-cutting process,the key factors affecting the HS-WEDM were determined.Then,a spark discharge control strategy,which simultaneously superimposes low-frequency discharge pulses and high-frequency discharge pulses between the poles based on a water-soluble dielectric with good encapsulation and inclusivity,was implemented to constitute an strengthen chip comminuting and removal method. Then,the effect of cutting process with different discharge control strategies is compared and analyzed by particle size distribution test. Finally,it was determined that the nanosecond and microsecond two-stage high-frequency discharge pulse superimposed controlling strategy is an effective method to improve chip comminuting and chip removal ability. In combination with the ultra-long wire reciprocated-WEDM with dual tensile reels winded,the cutting efficiency of reciprocated-WEDM can be significantly improved.

关 键 词：电火花线切割加工 强化碎屑排屑 粒度分布 双丝筒长丝系统 切割效率 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]