Factory Die Punching Tool Hot Forming

Working principle of stamping forming molds

Stamping forming mold is a commonly used tool for processing metal sheets. It places the metal sheet between two molds and applies pressure to cause plastic deformation, thereby obtaining the desired shape of the part. The working principle of stamping forming molds is based on the principles of material plastic deformation and mold mechanics.

The working principle of stamping forming molds involves the process of material plastic deformation. When the metal sheet is subjected to external forces, the internal grain structure changes, and the metal atoms rearrange, resulting in plastic deformation of the metal sheet. During the stamping process, by applying pressure, the metal sheet undergoes plastic deformation under the action of the mold, ultimately obtaining the desired shape of the part.

The working principle of stamping forming molds also involves the principles of mold mechanics. The mold is composed of an upper mold and a lower mold, and the space between the upper and lower molds is called the stamping chamber. The structure of the upper and lower molds both have the desired part shape, and the metal sheet is clamped in the middle by the closure of the upper and lower molds. During the stamping process, applying pressure causes a shape change in the stamping chamber between the upper and lower molds, resulting in plastic deformation of the metal sheet. The design and manufacturing of molds should consider the plastic deformation characteristics of materials and the strength and stiffness requirements of molds to ensure the stability of the stamping process and the consistency of part quality.

The working principle of stamping forming molds can be described by the following steps:

1. Design mold: Design the structure and shape of the upper and lower molds based on the required part shape and size. The design of the mold should take into account the plastic deformation characteristics of the material and the strength and stiffness requirements of the mold.

2. Manufacturing of molds: According to the design drawings, manufacture the upper and lower molds. The manufacturing process includes steps such as mold material selection, processing and manufacturing, and heat treatment.

3. Mold installation: Install the upper and lower molds on the punching machine, ensuring the position and alignment of the upper and lower molds.

4. Prepare metal sheets: Prepare metal sheets and cut and pretreat them according to the shape and size of the parts.

5. Start stamping: Place the metal sheet between the upper and lower molds, and apply pressure through the punch to change the shape of the stamping chamber between the upper and lower molds. The metal sheet undergoes plastic deformation under the action of the mold, ultimately obtaining the desired shape of the part.

6. Inspection of parts: After stamping is completed, take out the parts for inspection to check whether the dimensions and surface quality of the parts meet the requirements.

The working principle of stamping forming molds is based on the principles of material plastic deformation and mold mechanics. By applying pressure, the metal sheet undergoes plastic deformation, ultimately obtaining the desired part shape. The design and manufacturing of stamping forming molds should take into account the plastic deformation characteristics of materials and the strength and stiffness requirements of the mold, to ensure the stability of the stamping process and the consistency of part quality. Stamping molds are widely used in the manufacturing industry and are important tools for achieving mass production and improving production efficiency.

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