Research and progress on optimum blank development shape methods for sheet metal forming

Study on calculation of blank expanding in shallow rectangular shell

Although available methods of blank expanding are useful for flat and equal-height shallow box workpiece,they are unsuitable methods to calculate the expanding blank of flat and height unequal box.

The whole process of realization of CAD system of axial forging supported by general AutoCAD and 3D solid modeling has been introduced, including 3DSM of forging, plotting of calculating blank graph, blanking step selection, die cavities design and arrangement, determination of die block size and final design of 3DSM of die and planar assembly drawing.