On the requirement of surface quality of automobile sheet metal parts

2020-06-20 15:56:04

Any defect on the surface of automobile body stamping parts will affect the appearance of products, so it is not allowed to have defects on the surface of automobile stamping parts. Automobile stamping parts require clear and smooth decorative edges, even transition and symmetrical left and right, and the edges and lines between automobile body stamping parts must be smooth. Stamping parts not only need to meet the requirements of structure and function, but also the requirements of surface quality.

Overall dimension and shape of automobile sheet metal parts.

The shape of automotive body stamping parts is mostly three-dimensional shape, so it is difficult to accurately make its size shape in automotive body stamping parts, so the main model is generally used to determine the overall size of automotive body stamping parts. The position and shape size of various holes and the shape of three-dimensional surface must be consistent with the main model, and the dimensions that can't be marked for automobile body stamping parts must be measured through the main model. Because of the very complex shape, it is difficult to control the rebound of materials, and it increases the difficulty of controlling the accuracy of the product's shape dimension.

The strength and rigidity of automobile stamping parts.

During the deep drawing of automobile body stamping parts, the rigidity of some parts is usually poor, which causes the product to sink locally. And the automobile body stamping parts with unsatisfactory strength and rigidity will produce a hollow sound when they are vibrated.

Processing technology of automobile stamping parts.

The structure, shape and size of automotive body stamping parts determine the complexity of its process, which can not be directly processed in one process, but at least three processes. However, the shape of the space surface of the automotive body stamping parts and the convex, rib and edge on the surface should be drawn once as much as possible, otherwise it is difficult to ensure the smooth surface of the automotive body stamping parts and the consistency of the geometry.

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