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拉深件毛坯展开尺寸的计算一般都比较复杂。在工程计算中,往往都希望采用图表的形式,可将复杂的运算过程变成较为简便的作图方法。我们根据勾股定理,并采用简便的几何作图方法,将圆筒形拉深件和带凸缘拉深件毛坯展开尺寸进行图解计算,其过程分别叙述如下: 一、圆筒形拉深件毛坯展开尺寸的图解计算(图1) 圆筒形拉深件的毛坯形状仍为圆形。如果拉深件在变形前后的板料表面积不变,则毛坯的
Drawing parts rough drawing the size of the calculation are generally more complicated. In engineering calculations, often want to use the form of a chart, the complex calculation process into a more simple mapping method. According to the Pythagorean theorem, and using the simple geometric mapping method, the drawing parts of the cylindrical drawing parts and the flange drawing parts are graphically calculated. The process is described as follows: 1. Cylindrical drawing parts Graphical calculation of the unrolled blank (Figure 1) The blank shape of the cylindrical draw is still a circle. If the drawing parts before and after deformation of the sheet surface area unchanged, the rough