On the Surface Quality Requirements of Automobile Sheet Metal Parts

2019-09-02 14:09:36

There are any defects on the surface of automobile body stamping parts, which will affect the beauty of the products, so the surface of automobile stamping parts is not allowed to have defects. Automobile stamping parts require clear decorative edges, smooth, uniform transition and symmetrical left and right, and the edge connection between automobile body exterior stamping parts must be smooth. Stamping parts not only need to meet the structural and functional requirements, but also must meet the requirements of surface quality.

The overall size and shape of automobile sheet metal parts.

The shape of automobile body stamping parts is mostly three-dimensional. It is difficult to accurately make the size and shape of automobile body stamping parts. Therefore, the main model is usually used to determine the shape and size of automobile body stamping parts. The position and size of holes and the shape of three-dimensional surface must be consistent with the main model, and the dimension of automobile body stamping parts that can not be marked should be measured by the main model. Because of the complex shape, the springback of materials is difficult to control, which increases the difficulty of controlling the accuracy of product shape dimension.

Strength rigidity of automobile stamping parts.

When automobile body stamping parts are deep drawn, the rigidity of some parts is usually poor, which leads to local sinking of products. Moreover, when the stamping parts of the automobile body with unsatisfactory rigidity are vibrated, a kind of void sound will be produced. If the stamping parts of the automobile body are assembled into a car, and the automobile will vibrate at high speed, then the life of the stamping parts of the automobile body will be seriously reduced.

Processing technology of automobile stamping parts.

The structure shape and size of automobile body stamping parts determine the complexity of its process. It is impossible to process directly in one process, at least three processes are needed. However, the shape of the space surface of automobile body stamping parts and the convex, ribs and edges on the surface should be formed by one drawing as far as possible. Otherwise, it is difficult to ensure the surface smoothness and geometric consistency of automobile body stamping parts.

The technology of automobile stamping parts is developing towards the direction of precision, multi-function, high efficiency, energy saving, safe and clean production. The manufacturing technology level and quality of stamping parts have a direct impact on the quality and cost of automobile manufacturing to a large extent.