Any defect on the surface of automobile stamping parts will affect the beauty of products

2022-03-18 17:12:38

The manufacturing of automobile stamping parts is difficult, and the main factors are as follows:

1. Surface quality of automotive stamping products.

Any defect on the surface of automobile stamping parts will affect the beauty of products, so defects are not allowed on the surface of automobile stamping parts. Automotive stamping parts require clear and smooth decorative edges, uniform transition and symmetrical left and right, and the edge line connection between automotive body external stamping parts must be smooth. Stamping parts must not only meet the requirements of structure and function, but also meet the requirements of surface quality.

2. Overall size of automobile stamping parts.

The shape of automobile body stamping parts is mostly three-dimensional shape. It is difficult to accurately make its size and shape in automobile body stamping parts. Therefore, the overall size of automobile body stamping parts is generally determined with the help of the main model. The position, shape and size of various holes and the shape of three-dimensional curved surface must be consistent with the main model, and the dimensions of stamping parts of automobile body that cannot be marked must be measured through the main model. Due to the very complex shape, the rebound of materials is difficult to control, which increases the difficulty of controlling the accuracy of product shape and dimension.

3. Strength and rigidity of automobile stamping parts.

During the deep drawing of automobile body stamping parts, the rigidity of some parts is usually poor, resulting in local sinking of products. Moreover, when the automobile body stamping parts with poor strength and rigidity are vibrated, they will produce a hollow sound. If the automobile body stamping parts are assembled into a car, and the automobile will vibrate at high speed, it will seriously reduce the service life of the automobile body stamping parts.

4. Processing technology of automobile stamping parts.

The structural shape and size of stamping parts of automobile body determine that its process is complex. It is impossible to process them directly in one process, and at least three processing processes are required. However, the spatial surface shape of automobile body stamping parts and the bosses, ribs and edges on the surface should be formed by one-time drawing as far as possible, otherwise it is difficult to ensure the surface smoothness and geometric consistency of automobile body stamping parts.

Automobile stamping technology is developing towards the production direction of precision, multi-function, high efficiency, energy saving, safety and cleaning. The manufacturing process level and quality of stamping workpiece have a direct impact on automobile manufacturing quality and cost to a great extent.

In automobile manufacturing, 60% - 70% of metal parts need to be formed by plastic processing. Stamping processing is an important means. It is one of the basic, traditional and important metal processing processes. In medium and heavy-duty vehicles, most of the covering parts such as body outer plate, and some load-bearing and supporting parts such as frame, carriage and other auto parts are auto stamping parts. It is characterized by light weight and good stiffness. After plastic deformation, the internal structure of the metal is improved and the strength of the stamping parts is improved.