Raw materials (plates) are put into storage → shearing → stamping hydraulics → installation and mold debugging, the first piece is qualified → put into mass production → qualified parts are rust-proofed → put into storage
The concept and characteristics of cold stamping
1. Cold stamping refers to a pressure processing method that uses a mold installed on a press to apply pressure to the material at room temperature to cause separation or plastic deformation to obtain the required parts.
2. Characteristics of cold stamping
The product has stable dimensions, high precision, light weight, good stiffness, good interchangeability, high efficiency and low consumption, simple operation and easy automation.
Basic process classification of cold stamping
Cold stamping can be summarized into two categories: forming process and separation process.
1. The forming process is to cause plastic deformation of the blank without cracking to obtain stamping parts of a certain shape and size.
The forming process is divided into: drawing, bending, flanging, shaping, etc.
Drawing: A stamping process that uses a drawing die to turn a flat blank (process piece) into an open hollow piece.
Bending: A stamping method that bends plates, profiles, pipes or bars to a certain angle and curvature to form a certain shape.
Flanging: It is a stamping forming method that turns the sheet material into a straight edge along a certain curvature on the flat part or curved part of the blank.
2. The separation process is to separate the sheets according to a certain contour line to obtain stamping parts with a certain shape, size and cutting surface quality.
The separation process is divided into: blanking, punching, corner cutting, trimming, etc.
Blanking: Materials are separated from each other along a closed curve. When the part within the closed curve is used as the punched part, it is called punching.
Blanking: When materials are separated from each other along a closed curve, and the parts outside the closed curve are used as blanking parts, it is called blanking.
The current quality requirements for parts produced in stamping workshops are as follows:
1. The size and shape should be consistent with the inspection tool and the sample that has been welded and assembled.
2. The surface quality is good. Defects such as ripples, wrinkles, dents, scratches, abrasions, and indentations are not allowed on the surface. The ridges should be clear and straight, and the curved surfaces should be smooth and even in transition.
3. Good rigidity. During the forming process, the material should have sufficient plastic deformation to ensure that the part has sufficient rigidity.
4． Good workmanship. It should have good stamping process performance and welding process performance to reduce the production cost of stamping and welding. Stamping processability mainly depends on whether each process, especially the drawing process, can be carried out smoothly and production can be stable.
Post time: Dec-10-2023