In the development of the automotive mold industry at home and abroad, the mold technology presents the following development trends.
First, the three-dimensional design status of the mold has been consolidated
The three-dimensional design of the mold is an important part of the digital mold technology, and is the basis for the integration of mold design, manufacturing and inspection. Japan's Toyota, the United States and other companies have achieved the three-dimensional design of the mold, and achieved good application results. Some of the practices adopted by foreign countries in the three-dimensional design of molds are worth learning. In addition to facilitating integrated manufacturing, the three-dimensional design of the mold is convenient for interference inspection, and can perform motion interference analysis to solve a problem in the two-dimensional design.
Second, the simulation of the stamping process (CAE) is more prominent
In recent years, with the rapid development of computer software and hardware, the simulation technology (CAE) of the stamping process has played 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, and reduce the test time. Many domestic auto mold companies 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 trial mold and shorten the development cycle of stamping die, which has become an important means to ensure the quality of the mold. CAE technology is gradually transforming mold design from empirical design to scientific design.
Third, digital mold technology has become the mainstream
The rapid development of digital mold technology in recent years is an effective way to solve many problems faced in the development of automotive molds. The so-called digital mold technology is the application of computer technology or computer aided technology (CAX) in the mold design and manufacturing process. Summarize the successful experience of domestic and foreign automotive mold enterprises in the application of computer-aided technology. Digital automotive mold technology mainly includes the following aspects: 1 Design for manufacturability (DFM), which considers and analyzes manufacturability during design to ensure the success of the process. 2 The auxiliary technology of mold surface design develops intelligent profile design technology. 3CAE assists in the analysis and simulation of the stamping process, predicting and resolving possible defects and forming problems. 4 Replace the traditional two-dimensional design with a 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 that arise during the trial mold process and in the stamping production.
Fourth, the rapid development of mold processing automation
Advanced processing technology and equipment is an important foundation for improving productivity and ensuring product quality. It is not uncommon in the advanced automobile mold enterprises to have CNC machines with double tables, automatic tool changers (ATC), automatic machining photoelectric control systems, and on-line workpiece measurement systems. CNC machining has evolved from simple profile processing to full-scale machining of profile and structural surfaces. From medium to low speed machining to high speed machining, machining automation technology has developed rapidly.
5. High-strength steel plate stamping technology is the future development direction
High-strength steels have an excellent use in automobiles due to their excellent characteristics in terms of yield ratio, strain hardening characteristics, strain distribution capability, and collision energy absorption. At present, high-strength steels used in automotive stampings mainly include paint-hardened steel (BH steel), duplex steel (DP steel), and phase change induced plastic steel (TRIP steel). The International Ultralight Body Project (ULSAB) expects 97% of the advanced concept models (ULSAB-AVC) launched in 2010 to be high-strength steels, and the proportion of advanced high-strength steel sheets in vehicle materials will exceed 60%, and duplex The proportion of steel will account for 74% of the steel plate for vehicles.