微细电火花三维加工中电极损耗补偿新方法

摘要

为解决微细电火花三维加工中存在的电极损耗问题,提出了一种使线性补偿法与均匀损耗法相结合的新的补偿方法.加工实验结果表明,使用这一新补偿方法可明显提高三维微细电火花加工的加工效率和底面粗糙度,并且减少电极损耗.与均匀损耗法相比,电极损耗长度可减少17.8%,表面粗糙度可降低9.9%,材料去除速率可提高10.1%.%To solve the electrode wear problem in three-dimensional micro-electrical discharge machining（3D micro-EDM）,a new compensation method of combination of linear compensation method（LCM） with uniform wear method（UWM） is presented.The experimental results show that the machining efficiency and the roughness on the bottom surface are improved obviously in 3D micro-EDM,and the electrode wear is reduced using this new method.Compared with the UWM,the length of electrode wear decreases by 17.8%,the surface roughness reduces by 9.9% and the material removal rate increases by 10.1%.