A novel multielectrode multiloop with series capacitance (MEMLSC) pulse generator is developed to improve the machining efficiency of electrical discharge machining (EDM). In the multielectrode discharge circuit system, each electrode is connected to an independent discharge circuit and forms a singular discharge loop with a common workpiece. A capacitance is serially inserted between each electrode to enhance the discharge and material removal. All the electrodes are coaxial servo-fed to erode workpiece materials. Compared with conventional EDM, which can generate only a singular discharge for each pulse, the MEMLSC pulse generator can dispersedly generate multiple discharges for each pulse. The machining characteristics are evaluated under varying discharge conditions to reveal the dependence of the workpiece material removal rate (MRR) and relative wear ratio (WR) on the capacitance, electrode number, and pulse width. The results of experiments on the MEMLSC and conventional EDM pulse generators show that compared with the latter, the former not only effectively improves the MRR (by more than 6 times) but also provides good machining surface quality and a moderate tool wear ratio (TWR).

为了提高电火花加工（EDM）的加工效率，开发了一种新型的串联电容多电极多环（MEMLSC）脉冲发生器。在多电极放电电路系统中，每个电极都连接到一个独立的放电电路，并与一个共同的工件形成一个单一的放电回路。在每个电极之间串联插入一个电容，以增强放电和材料去除。所有电极都是同轴伺服进给的，以腐蚀工件材料。与传统的EDM相比，传统的EDM只能为每个脉冲产生单个放电，而MEMLSC脉冲发生器可以为每个脉冲分散地产生多个放电。在变化的放电条件下评估加工特性，以揭示工件材料去除率（MRR）和相对磨损率（WR）对电容，电极数和脉冲宽度的依赖性。在MEMLSC和常规EDM脉冲发生器上进行的实验结果表明，与后者相比，前者不仅可以有效地提高MRR（超过6倍），而且还可以提供良好的加工表面质量和中等的刀具磨损率（TWR） 。