What Is Deep Drawing Stamping

Deep drawing, also called drawing, drawing, calendaring, etc., refers to the use of a die to punch a flat blank of a certain shape obtained after punching into various open hollow parts or reduce the diameter of the open hollow blank to increase the height. Kind of mechanical processing technology. The deep-drawing process can be used to manufacture cylindrical, stepped, tapered, spherical, box-shaped and other irregularly shaped thin-walled parts. Cooperating with other stamping and forming processes such as flanging, bulging, flaring, and necking, it can also manufacture extremely complex parts. Therefore, the deep drawing process occupies a very important position in the production process of industrial sectors such as automobiles, airplanes, tractors, electrical appliances, instruments, and electronics.

The stamping process of making cup-shaped parts from flat slabs is also called drawing. Through deep drawing, hollow parts with cylindrical, spherical, tapered, box-shaped, stepped, flanged and other complex shapes can be made. The combination of deep drawing and flanging, bulging, flaring, and necking can be used to make stamping parts with more complex shapes. Automobile bodies, fuel tanks, basins, cups and boiler heads are all deep-drawn parts. The deep drawing equipment is mainly a mechanical press. In the drawing process of the cylindrical workpiece, the slab is reduced from the initial diameter D 0 to the cylindrical diameter of the stamping part. Indicates the size of the drawing deformation, which is called the degree of drawing deformation. When the degree of deformation is large, the deformation force required for deep drawing may be greater than the strength of the side wall of the formed part, and the workpiece will be broken. In order to increase the degree of drawing deformation to produce a satisfactory workpiece, the drawing with a large degree of deformation is often divided into two or more passes, and the diameter is gradually reduced and the height is increased.