在电子和电器产品中常用大量的铝或铜制的矩形薄壁深筒零件。这类零件最好用冷挤工艺制造。因为矩形冷挤凹模孔不易在凹模体上作到精确的中分,所以很难采用以圆锥形叫模体为基础的冷挤模通用模架结构。若采用普通标准模架结构,组装凹模或更换凸、凹模时,产生偏心无法修正,只好重钻销钉孔,甚至报废凹模或模架。采用无导向的敞开式简单结构时,对冲床精度和模具安装技术 In electronics and electrical products commonly used in large quantities of aluminum or copper rectangular thin-walled deep-tube parts. Such parts are best made by cold extrusion process. Because the rectangular cold extrusion die hole is not easy to make accurate cent in the die body, so it is difficult to use the conical die-based cold die common mold base structure. If the use of common standard mold structure, the assembly or replacement of convex die, concave die, the eccentric can not be corrected, had to re-drill pin hole, and even scrap die or die. The use of open-oriented, simple structure, the accuracy of punch and mold installation technology