发明名称 DIE FOR CUTTING AND FOR DEEP DRAWING
摘要 This die is to be used in metal processing in the production of thin-wall bulky articles from sheet material. The use of the die ensures the reduction of the number of transitions at a guaranteed uniform roughness of the parts drawn. The consumption of fluids is reduced which allows installing the die in universal pressing equipment. The die consists of a fixed body to which are coaxially fixed a drawing and trimming die and in the opening of the trimming die a trimming punch is placed. The trimming punch is fixed to an upper plate and the drawing punch - to guiding columns. Both plates are interconnected by guiding columns. Under the drawing die in the body, a chamber is formed which is filled with fluid and is connected with the drawing die and with a side tank. Cams are attached to the upper plate which is pressed close to rollers attached to the body at the level of the trimming die.
申请公布号 BG48355(A1) 申请公布日期 1991.02.15
申请号 BG19890088568 申请日期 1989.05.25
申请人 VISSH MASHINNOÙELEKTROTEKHNICHESKI INSTITUT 发明人 KOSTOV, EMIL S.;KOVACHEV, TOSHKO M.
分类号 B21D22/20;(IPC1-7):B21D22/20 主分类号 B21D22/20
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