Stamping is one of the four major processes of automobile manufacturing. The manufacturing accuracy of the car body depends to a large extent on the accuracy of stamping and its assembly. Automotive stamping parts technology originated from the development and needs of mass production, especially the development of the automotive industry, and it is still the case now.
The development status of my country's automobile stamping parts technology is manifested in the following aspects.
1. High degree of automatic production of outer covering parts
The outer cover has high requirements on surface quality and can only rely on automated production. Although the automated production of automobile outer panels in my country is not high-speed stamping, the degree of automation is quite high. This is mainly reflected in the widespread use of automated line stamping.
In-line stamping generally consists of 4 presses to form a complete closed stamping line, with robots automatically feeding and picking parts in the middle, and the production cycle is about 10~15 times/min, typically the first double-action 1630T and the subsequent 800T Press composition.
2. Automatic or semi-automatic production of inner coverings such as floors and roofs
The production method of this kind of auto parts is mainly determined by batch, and generally adopts automatic or semi-automatic production. Except for joint ventures, local companies basically adopt semi-automatic stamping production methods at the beginning.
Semi-automated stamping places specific demands on the press. Firstly, the press table should be large; secondly, due to the large forming force, the first press should be 2000T or 2400T, and the follow-up press should be 1000T or 1250T or more.
3. Chassis frame parts are mostly manufactured by component companies
Chassis frame parts are mostly manufactured by parts companies and sent to OEMs. Large-scale parts companies generally have 6 stamping lines. Considering the convenience of quality control and production and logistics management of OEMs, such parts companies have welding and even subsequent painting or spraying processes, so that they can directly provide total parts to OEMs. into parts.
4. Rapid development of precision stamping technology
Precision stamping technology originated in Switzerland along with the development of the watch manufacturing industry. It is one of the key technologies in the development of the automobile industry and has important applications in the manufacture of some automobile assemblies, such as door hinge assemblies and glass regulator assemblies. The material thickness of this kind of parts is 3-5mm, which requires high precision, good strength and smooth and reliable assembly movement.
After years of development, precision stamping technology has made gratifying achievements in my country's automobile industry. At present, a number of powerful fine blanking enterprises have emerged in our country.
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