一、电火花加工原理及其脉冲电源的发展电火花加工是直接利用电能对导电材料或零件进行尺寸加工的新工艺之一。其加工的机理,一般地可以说明如下。如图一所示,把被加工工件和工具电极相对置于绝缘的工作液(如煤油)中,工件和电极分别接脉冲电源的正、负两极,当两者相互靠近至很小的距离(约0.005～0.05毫米)时,工件和电极之间的某部分工作液被电离,并形成电 First, the EDM principle and the development of pulse power EDM is the direct use of electrical energy on the conductive material or part of the size of the new processing. The processing mechanism, generally can be described as follows. As shown in Figure 1, the workpiece and the tool electrode is placed in an insulating working fluid (such as kerosene), and the workpiece and the electrode are respectively connected to the positive and negative poles of the pulse power source. When the two are close to each other to a very small distance About 0.005 to 0.05 mm), a part of the working fluid between the workpiece and the electrode is ionized and forms electricity