What are the technical characteristics of automobile stamping die processing?

Automobile stamping die processing has the technical characteristics of high precision, high complexity, high efficiency, high surface quality requirements and the need to use special materials and processes. The following is a detailed introduction:

high-precision

The precision of automobile stamping die directly affects the dimensional accuracy and assembly accuracy of automobile parts. For example, the precision of automobile panel dies is usually required to be within ±0.01mm, so as to ensure that the stamped panels can be accurately matched with other parts and meet the overall appearance and performance requirements of automobiles.

High complexity

The structure of automobile stamping die is complex, which often contains many parts and complex motion mechanisms. Taking the die for large automobile panels as an example, its structure usually includes an upper die holder, a lower die holder, a male die, a female die, a blank holder, a guiding mechanism, a discharging mechanism and other parts. Moreover, the mold surface is usually a complex three-dimensional surface, which needs to be designed and machined through a complex mathematical model.

high efficiency

Automobile production is usually mass production, which requires high production efficiency of stamping die. In order to improve production efficiency, advanced processing equipment and technology are often used in automobile stamping die processing, such as high-speed cutting and multi-axis linkage processing. These processing methods can greatly shorten the processing time and improve the production efficiency on the premise of ensuring the precision and quality of the mold.

High surface quality requirements

The surface quality of automobile stamping die directly affects the surface quality of stamping parts and the service life of the die. Therefore, the machining of automobile stamping die requires high surface quality, and the surface roughness of the die is usually required to reach Ra 0.8-Ra 1.6 μ m.. In order to meet this requirement, it is necessary to adopt fine grinding, polishing and other processes in the machining process to treat the die surface.

Use special materials and processes

Automobile stamping dies need to bear large pressure, impact force and friction force, so die steel materials with high strength, high wear resistance and high toughness are needed. Common die steels are Cr12MoV, H13, etc. At the same time, in order to improve the performance and service life of the die, some special heat treatment processes and surface treatment processes, such as quenching, tempering, nitriding and hard chromium plating, need to be adopted. These processes can improve the hardness, wear resistance, corrosion resistance and demoulding performance of the die.