Stamping technology is one of the four major processes in automobile manufacturing industry. The manufacturing accuracy of automobile body largely depends on the stamping technology and assembly accuracy. The development and needs of large-scale production have stimulated the development of stamping technology, especially the development of automobile industry. Stamping technology is widely used, and so far, China's automobile stamping technology is mainly shown in the following aspects:

1. The degree of automatic production of outer panels is high

Because the outer panel has good surface quality requirements, it is best to rely on automatic production. Moreover, although the automatic production of automobile outer panel in China is not high-speed stamping technology, it also has a high level of automation, which is mainly reflected in the widely used automatic line stamping.

The stamping line is generally a complete closed stamping line composed of four presses. The robot automatically completes the feeding and taking of parts. The production rhythm is about 10 ~ 15 times / min. the typical ones are the first double acting 1630t press and the subsequent 800t press.

2. Floor and roof coverings need to be produced automatically or semi automatically

The production mode of these parts is mainly determined by batch, and generally adopts automatic or semi-automatic production. In addition to joint ventures, local enterprises basically adopted the semi-automatic stamping production mode at the beginning, with specific requirements for semi-automatic stamping machines.

3. Parts enterprises manufacture chassis frame parts

Generally, chassis frame parts are mostly produced by parts and components, which are mainly sent to the main engine factory for treatment. Large parts companies generally have six stamping production lines. Considering the convenience of quality control and production logistics management of the main engine plant, these parts companies have welding and even subsequent painting or spraying processes, so they can directly provide assembly parts to the main engine plant.

4. Rapid development of precision stamping technology

With the development of clock manufacturing industry, precision stamping technology originated in Switzerland and is one of the key technologies for the development of automobile industry. It has important applications in the manufacture of some automobile assemblies, such as door hinge assembly, window regulator assembly and so on. The thickness of this part is 3-5mm. After years of development, it requires high precision, good strength and stable and reliable assembly action. Precision stamping technology has made gratifying achievements in China's automobile industry. At present, a number of powerful precision stamping enterprises have emerged in China.