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早在我国社会主义经济建设大跃进时期,随着电火花穿孔加工工艺在冷冲模等生产中的应用,有人就试图用来加工型腔模,但没有成功。型腔模电火花穿孔加工工艺首先在锻模型腔粗规准加工生产中得到了应用。其主要设备有上海第八机床厂在1959年以后生产的配备4.3瓩脉冲发电机(以后改进为7瓩)的 D5540电脉冲穿孔加工机床和1965年鉴定随后生产的配备15瓩脉冲发电机(以后改进为20瓩)的 D5570电脉冲穿孔加工机床。以后几年,电火花加工在冲模和其他模具及另件生产中得到了比较广泛的应用和推广,其加工工艺方法和相应的装备都有多种多样的发展……。但是,在型腔模电火花加
Early in the Great Leap Forward period of socialist economic construction in our country, with the application of EDM perforation processing technology in the production of cold die, some people tried to process the cavity die without success. Cavity die EDM machining process first forging die cavity rough standard machining production has been applied. Its main equipment is the D5540 electric pulse perforating machine with 4.3 瓩 pulse generator (later improved to 7 瓩) produced by Shanghai Eighth Machine Tool Works after 1959 and the subsequent production of a 15 瓩 pulse generator (after 1965) Improved to 20 瓩) D5570 electric pulse punching machine. In the next few years, EDM has been widely used and popularized in the production of dies and other molds and other parts, and its processing methods and corresponding equipment have a wide range of development ....... However, EDM in the cavity mold