EDM
EDM is the abbreviation of the English word Electrical Discharge Machining, which uses a continuously moving thin metal wire (called an electrode wire) to perform pulse spark discharge on the work piece to erode the metal and cut it into shape. It is mainly used to process various complex and precise work pieces, such as punches, concave dies, fixed plates, etc. EDM has outstanding advantages such as small machining allowance, high machining precision, short production cycle, and low manufacturing cost, and have been widely used in production.