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第20届国际机床设计与研究会议(International MTDR)于1979年9月10日至14日在英国伯明翰举行。在会议上发表的电加工论文共有十二篇。其中五篇是有关电火花成型加工、线切割加工和电解加工工艺。英国曼彻斯特大学理工学院的K.腊贾戈帕耳和C.F.诺布尔在《电火花切割的若干特性》一文中宣布,已经证实在弛张式脉冲电源的线切割机床上,作用于电极丝上的力的持续时间小于脉冲周期的5％。同时,他们又以此为前提,推导了电极丝上任意一点在任一瞬间的位
The 20th International Machine Design and Research Conference (International MTDR) was held in Birmingham, United Kingdom from September 10 to September 14, 1979. In the conference published a total of 12 papers in electrical processing. Five of them are related to EDM, wire cutting and electrolytic processing. K. Larja Godpall and CF Noble at the Institute of Technology, University of Manchester, UK, announced in a paper entitled “Several Characteristics of EDM,” that it has been demonstrated that wire tensioned machines operate on wire electrodes The duration of the force is less than 5% of the pulse period. At the same time, they also as a precondition to derive the electrode wire at any point in any moment