石墨电极是电火花成型加工中经常采用的一种工具电极,它不仅具有良好的导电特性和化学稳定性,而且还具有耐腐蚀、热膨胀小等优点。但是,由于石墨质地坚硬而脆,因此采用常规的机械加工方法(如车、铣等加工方法)进行加工时,加工表面往往产生崩碎现象。尤其对于图形复杂、精细度高的石墨电极,采用机械加工方法就更为困难,甚至无法进行加工,而且加工中产生的大量粉尘会污染环境,危害健康。如果采用手工镂刻方法加工,则加工速度慢,精度 Graphite electrode is often used in EDM tool electrode, which not only has good conductivity and chemical stability, but also has the advantages of corrosion resistance, small thermal expansion. However, due to the hard and brittle graphite texture, when machining using conventional machining methods (such as car, milling and other processing methods), the machined surface tends to crumble. Especially for the graphically complex and high-precision graphite electrodes, it is more difficult or even impossible to process by using the machining method, and the large amount of dust generated during the processing can pollute the environment and endanger the health. If using manual engraving method of processing, the processing speed is slow, accuracy