环形丝单向运丝电解线切割加工技术试验研究

为了解决加工间隙内电解加工产物的排除问题，在分析电解线切割加工特点的基础上,采用环形镀锌黄铜丝作为阴极，在电机的驱动下,使环形丝的运动方向与重力方向保持一致, 从而便于带出加工区的电解产物;在搭建的加工系统上进行了正交试验,研究加工电压、进给速度、电解液浓度及环形丝单向运丝速度对加工间隙的影响。最后采用优化的加工参数加工出缝宽为250μm、深宽比达20的五角星结构。

Experimental Research on Ring Wire WECM with Wire Travelling in One Direction

The electrolysis products in the gap always affected the WECM precision,a ring wire travelling in one direction during the process was proposed to enhance the efficiency of removing products,and the wire tension was controlled in constant to ensure the stability of wire travelling.The influence of several processing factors,such as wire travel speed,feed speed,concentration of electrolyte and voltage,on the machining process was investigated. Structures with high-aspect-ratio were fabricated,the width of the slits was 250μm  and the aspect ratio of  the slits was nearly 20.