Current situation and development trend of stamping technology
Release Time::2014-09-03
In recent years, along with the importance of the development of advanced manufacturing technology to obtain the consensus of hitherto unknown, stamping technology both in depth and width have beenhitherto unknown development, which is characterized with high technology, great changes have taken place in method and system.Computer technology, information technology, modern testing technology and so on stamping field penetration and integration,promote the formation and development of advanced stamping forming technology. This paper focuses on the development of automobile industry, discusses the current situation and development trend ofstamping technology.
Characteristics of 1 stamping technology development
The real development of stamping technology, industrial production began in the car. At the beginning of twentieth Century, industrial production American Ford automobile greatly promoted the research anddevelopment of punching operation. Research work basicallysimultaneously forming technique and forming in the sheet two, the key question is rupture, wrinkling and springback, involves the innovationformability prediction, forming method, and the analysis and control of the forming process. But most of the time in twentieth Century, thestamping technology to master basically is the experience type. Analysis tool is the forming mechanics classic, can solve problems is very limited.Research is focused on the forming performance and the formingmechanics, far can not meet the needs of the automotive industry. 60 years is an important period for the development of stamping technology,various new forming techniques have emerged. Especially the forming limit diagram (FLD) is proposed, the material properties, forming theory,forming the coordinated development of process and quality control,become a milepost technology development history of stamping.
Since the early 80's the development of finite element method and CAD technique, the 90 time with numerical simulation as the center and computer application technology has been developing rapidly andpracticability in the field of stamping, becomes a powerful tool forbehavioral research and process design of material deformation.Automotive stamping technology truly entered the analysis phase,starting from the empirical to the scientific forming traditional plate.
Throughout the development process of the century:
(1) the research and improvement of stamping performance is the development of complementary and stamping technology..
(2) the rapid development of automobile, aircraft and other industries, as well as energy factors are the main driving force for the development of stamping technology. Entering the new century, environmental factorsand the relevant legal constraints have become increasingly prominent,automotive lightweight design and manufacturing has become thecurrent important topic.
(3) the development of digital simulation of the forming process, the promotion of the traditional stamping technology to scientific, entered theranks of advanced manufacturing technology.
(4) the development of stamping technology involves all aspects ofenergy, material, mold, equipment etc.. Scientific analysis and control ofinnovation and its process technology is the core technology development; mold technology is the embodiment of stamping technology development, is an important factor in determining the product manufacturing cycle, cost, quality.
2, the development of advanced forming technology
Stamping technology is closely related with the development of materialsand structures. The next 10-15 years, the demands of the environment and the increasingly stringent environmental laws, will make big changesof automotive materials and structure. In order to reduce emissions CO2car city, to light, the development direction of the most prominent is to improve the material used for the specific strength and stiffness andlightweight structure and efficient development. Modern body structure,high strength steel accounted for about 25% of the. At present, in the continued development of ultra high strength steel at the same time, with the development of the new "efficient" structure and manufacturing technology, to make the body weight is less than 20%. But the more thedirection of attention is to expand the application material of aluminum,magnesium and other low density alloy in automotive.