The factors of craze and transfiguration are analysed when the workpiece is cutting by wire-EDM machine, at the same time, the particular preventive measures are proposed.

分析了异形工件在进行线切割加工时出现开裂变形的原因，并制定了详细的预防措施。

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Mitsubishi wire cutting machine, EDM, drilling machines, grinders, milling machines, drilling bed;

三菱线切割机、火花机、打孔机、磨床、铣床、鑚床；

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