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图1所示的零件系矩形动框线圈骨架。它的上下两个平面带有异形凸缘,是我厂从国外引进的关键元件之一。它的用途是作为线圈的刚性支承及磁电系仪表中得到可动部分的必要阻尼。其材料为铝,少数使用杜拉铝或紫铜。该零件如按带凸缘的矩形件拉深时,其成型工艺性是很差的,这是因为:1.零件凸缘与直壁部分的圆角半径很小,不利于矩形拉探成型的顺利进行。2.矩形件的角部(?)角圆角半径较小,根据毛坯的相对厚度t/D×100、相对圆角半
The parts shown in Figure 1 are rectangular bobbin bobbins. Its top and bottom two planes with shaped flange, is one of the key components imported from abroad by our factory. Its purpose is to serve as a rigid support for the coil and the necessary damping of the movable part of the magnetoelectric instrument. The material is aluminum, a small number of Duola aluminum or copper. The parts, such as the flange with a rectangular piece of drawing, the molding process is very poor, it is because: 1. Parts flange and straight wall part of the fillet radius is small, is not conducive to rectangular pull forming Smooth progress. 2. Rectangular corner (?) Corners fillet radius smaller, according to the relative thickness of the blank t / D × 100, relative to the fillet half