Nine trends in the development of automotive mold technology at home and abroad

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In the development of the automotive mold industry at home and abroad, the mold technology presents the following development trends.
1. mold three-dimensional design position has been consolidated
The three-dimensional design of the mold is an important part of the digital mold technology, and it is the basis for the integration of mold design, manufacturing and inspection. Japan's Toyota, the United States General Motors and other companies have realized the three-dimensional design of the mold, and achieved good results. Some of the practices adopted in the three-dimensional design of molds abroad are worthy of our reference. In addition to the three-dimensional design of the mold is conducive to the realization of integrated manufacturing, another advantage is to facilitate interference inspection, motion interference analysis, to solve a problem in the two-dimensional design.
2. stamping process simulation (CAE) is more prominent
In recent years, with the rapid development of computer software and hardware, the simulation technology of stamping forming process (CAE) plays an increasingly important role. In the United States, Japan, Germany and other developed countries, CAE technology has become a necessary part of the mold design and manufacturing process, widely used to predict forming defects, optimize the stamping process and mold structure, improve the reliability of mold design, reduce the test time. Many domestic automobile mold enterprises have also made significant progress in the application of CAE and achieved good results. The application of CAE technology can greatly save the cost of mold testing and shorten the development cycle of stamping dies, which has become an important means to ensure the quality of molds. CAE technology is gradually making the mold design from experience design to scientific design.
3. digital mold technology has become the mainstream direction
In recent years, the rapid development of digital mold technology is an effective way to solve many problems in the development of automobile mold. The so-called digital mold technology is the application of computer technology or computer-aided technology (CAX) in the mold design and manufacturing process. Summarizing the successful experience of the application of computer-aided technology in domestic and foreign automobile mold enterprises, digital automobile mold technology mainly includes the following aspects: ①Design for manufacturability (DFM), that is, considering and analyzing manufacturability in design to ensure the success of the process. The auxiliary technology of mold surface design, the development of intelligent surface design technology. ③ CAE-assisted analysis and simulation of stamping process, predict and solve possible defects and forming problems. ④ Replace the traditional two-dimensional design with three-dimensional mold structure design. ⑤ Mold manufacturing process using CAPP, CAM and CAT technology. ⑥ Under the guidance of digital technology, solve the problems in the process of mold testing and stamping production.
The rapid development of 4. mold processing automation
Advanced processing technology and equipment is an important basis for improving productivity and ensuring product quality. In the advanced automotive mold enterprises equipped with dual-table CNC machine tools, automatic tool changer (ATC), automatic processing of the photoelectric control system, the workpiece online measurement system is not uncommon. CNC machining has developed from a simple surface processing to a comprehensive surface and structural surface processing, from low-speed processing to high-speed processing, processing automation technology is developing very rapidly.
5. high strength steel plate stamping technology is the future development direction
High-strength steels are increasingly used in automobiles due to their excellent properties in terms of yield ratio, strain hardening characteristics, strain distribution capacity and impact energy absorption. At present, the high strength steel used in automobile stamping parts mainly includes baking varnish hardening steel (BH steel), dual phase steel (DP steel), transformation induced plasticity steel (TRIP steel) and so on. The International Ultra-Light Body Project (ULSAB) expects 97% of the advanced concept models (ULSAB-AVC) to be launched in 2010 to be made of high-strength steel, and the proportion of advanced high-strength steel plates in vehicle materials will exceed 60%, and the proportion of dual-phase steel will account for 74% of vehicle steel plates.