The processing of automotive parts in Dalian is a complex and critical process that requires advanced processing techniques, equipment, and quality control methods to ensure the quality and performance of automotive parts. Meanwhile, with the continuous advancement of technology, the processing of automotive parts will also continue to develop towards intelligence, greenness, and lightweighting.

With the development of technologies such as artificial intelligence, big data, and the Internet of Things, automotive parts processing will gradually achieve intelligence. For example, using intelligent robots for processing operations to achieve automated production; Utilize big data analysis to optimize the machining process, improve machining efficiency and quality. The intelligent machining system can monitor the parameters during the machining process in real time, automatically adjust the machining process, achieve adaptive machining, and improve machining accuracy and stability.

What are the key technical points of stamping in the processing of automotive parts in Dalian?

In the processing of automotive parts, stamping plays an important role, and its technical points mainly include the following aspects:

1、 Mold design and manufacturing

Reasonable mold structure

The structural design of stamping dies should be based on the shape, size, and precision requirements of the components. For example, for complex shaped components, it may be necessary to use multi station molds or progressive molds to improve production efficiency and processing accuracy.

The structure of the mold should ensure that the workpiece can be smoothly fed, positioned, and demolded during the stamping process, avoiding problems such as jamming and deformation.

High precision mold manufacturing

The manufacturing accuracy of molds directly affects the quality of stamped parts. The working parts of the mold, such as convex molds, concave molds, cutting edges, etc., should be manufactured using high-precision processing equipment and processes to ensure dimensional accuracy and surface quality.

The selection of mold materials is also very important. Suitable mold steel materials should be chosen based on the material, batch size, and processing requirements of the stamped parts to ensure the strength, hardness, and wear resistance of the mold.

2、 Control of stamping process parameters

Stamping pressure

Stamping pressure is one of the key factors affecting the quality of stamped parts. Excessive pressure may cause the workpiece to break or deform, while insufficient pressure may result in incomplete forming of the workpiece. Therefore, the stamping pressure should be selected reasonably based on the material, thickness, and shape of the workpiece.

In actual production, the stamping pressure can be controlled by adjusting parameters such as the tonnage and slider stroke of the stamping machine.

Stamping speed

The stamping speed also has a significant impact on the quality and production efficiency of stamped parts. Too fast speed may cause scratches, burrs, and other issues on the surface of the workpiece, while too slow speed can reduce production efficiency.

The stamping speed should be reasonably selected based on the material, thickness, and shape of the workpiece, as well as the structure and performance of the mold. Generally speaking, for thin sheets and small components, higher stamping speeds can be used; For thick plates and large components, the stamping speed should be appropriately reduced.

Mold gap

Mold gap refers to the gap between the convex mold and the concave mold. Excessive clearance may lead to burrs, deformations, and other issues at the edges of the workpiece, while insufficient clearance may result in increased mold wear and workpiece fracture.

The mold clearance should be reasonably selected based on the material, thickness, and precision requirements of the workpiece. Generally speaking, for thin sheets and high-precision components, the gap between molds should be small; For thick plates and low precision components, the mold gap can be appropriately increased.

3、 Material selection and processing

Appropriate materials

The stamping process of automotive parts should select suitable materials based on their usage requirements and performance characteristics. Common stamping materials include steel plates, aluminum plates, copper plates, etc. Different materials have different mechanical and processing properties, and should be selected according to specific circumstances.

For example, for components with high appearance requirements such as car body coverings, materials with good surface quality and good formability should be selected; For components that can withstand heavy loads, such as chassis components, materials with high strength and good toughness should be selected.

Material pretreatment

Before stamping, the material should be pre treated to improve its processing performance and quality. Pre treatment methods include annealing, normalizing, acid washing, phosphating, etc.

For example, for materials with high hardness, annealing treatment can be carried out to reduce their hardness and improve their plasticity; For materials with oxide scale or oil stains on the surface, acid washing or phosphating treatment can be carried out to remove the oxide scale and oil stains, and improve the surface quality of the material.

By using punching machines and molds to press and form sheet metal, it is possible to process automotive body coverings, chassis components, and more. Stamping processing has the advantages of high production efficiency, low cost, and high precision of parts. For example, large sheet metal parts such as car doors and engine hoods are usually manufactured using stamping methods.