Automobile stamping die is an important technological equipment for automobile production

2020-03-23 15:19:03

A large number of cold stamping processes have been used in the production of automobile parts and stamping parts, which are suitable for the needs of automobile stamping parts industry with many varieties and large batch production. In medium and heavy-duty vehicles, most of the covering parts, such as body outer panel, and some load-bearing and supporting parts, such as frame, carriage and other auto parts are automobile stamping parts. Stamping indicates that the steel used for cold stamping is mainly steel plate and steel strip, accounting for 72.6% of the total steel consumption of the vehicle. The relationship between cold stamping materials and the production of automotive stamping parts is very close. The quality of materials not only determines the performance of the product, but also directly affects the process design of automotive stamping parts, and affects the quality, cost, service life and production organization of the product. Therefore, reasonable selection is necessary Material is an important and complex work.

In the downstream industry of mould, the use of mould in automobile manufacturing industry is relatively large. In the developed countries of automobile manufacturing industry such as the United States, Germany and Japan, the output value of automobile stamping die industry accounts for more than 40% of the output value of the whole industry of mould. In China, about one third of the mould products are for automobile manufacturing industry. Generally, more than 1000 to 1500 sets of stamping dies are needed to produce a common car, accounting for about 40% of the output value of all the dies required for the production of the whole car.

Automobile stamping die is an important process equipment of automobile production, its design and manufacturing time accounts for about 2 / 3 of the automobile development cycle, and it is one of the main constraints of automobile type change. Stamping means that the stamping die of automobile has the characteristics of large size, complex working surface and high technical standard, which belongs to technology intensive products. In the past, the structure design of single process die and compound die was widely used in automobile stamping die. With the improvement of technology and equipment level, the multi position die and progressive die which can reduce cost and improve production efficiency were gradually applied in the design and manufacturing of automobile stamping die, and became the development direction of automobile stamping die manufacturing technology.

The development history of automobile welding parts in the last century can be seen as follows:

(1) The research and improvement of stamping performance is complementary to the development of stamping technology.

(2) The rapid development of automobile, aircraft and other industries, as well as energy factors are the main driving force of stamping technology development. In the new century, environmental factors and related legal constraints are increasingly prominent. Lightweight design and manufacturing of automobile has become an important issue.

(3) With the development of digital simulation technology in forming process, traditional stamping technology has been promoted to be scientific and advanced manufacturing technology.

(4) The development of stamping technology involves material, energy, mold, equipment and other aspects. The innovation of process method and the scientific analysis and control of its process are the core of technological development; the die technology is the embodiment of the development of stamping technology and an important factor determining the manufacturing cycle, cost and quality of products.