The Basic Process Of Stamping

The Basic Process Of Stamping

Stamping is a production process that uses the power of conventional or special equipment to directly force and deform the metal sheet in the mold, so as to obtain product parts with certain shape, size and performance.

Sheet metal, stamping dies and equipment are the three elements of processing. Cold stamping is a method of cold deformation of metal. Therefore, commonly known as cold stamping or sheet metal stamping, referred to as stamping. It is one of the main methods of metal and plastic processing (or pressurization), and also belongs to the material forming engineering technology.

Stamping process sequence (blanking, cutting, trimming, tongue cutting, cutting, flaring, punching, punching, notch, center hole punching, fine blanking, continuous mode, single operation mode, combined punching, pressing Edge, embossing, forming) refers to the sequence of each process in the stamping process. The sequence of stamping process should be determined according to the requirements of workpiece shape, dimensional accuracy, process deformation law and material properties.

Generally follow the following principles:

(1) For stamping parts with holes or gaps, a single-process model is selected, and the holes or gaps are generally punched first. When selecting a progressive die, blanking is arranged as the last process.

(2) If the workpiece position is close and the size is two holes, the big hole should be punched first and then the big hole should be punched to avoid punching the material in the big hole and causing the hole to deform.

(3) For bending parts with holes, under normal circumstances, it can be bent first and then punched to simplify the mold structure. When the hole is located in the bending deformation area or close to the deformation area, and the hole has a benchmark and has high requirements, it should be bent first and then punched.

(4) For deep drawn parts with holes, generally deep drawing and then punching. When the position of the hole is at the bottom of the workpiece and the dimensional accuracy of the hole is not high, the hole can be punched first and then drawn, which is conducive to the deformation of the drawing and reduces the number of times of drawing. above

(5) Arrange the order of the bending migration trend of the material after the bending of the bending part from the material deformation angle and bending angle, usually the outer angle should be bent

(6) For complex rotor drawing parts, the drawing dimensions are large, and generally appear in the form of small sizes after drawing first. For complex rotors, the drawing size should be drawn after drawing for small size, and after drawing for large size outline.

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