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   With the rapid development of the automotive industry and the rapid updating of vehicle models, the requirements for the appearance quality of automobiles are becoming higher and higher. This requires mold design and manufacturing personnel to pay attention to the factors that affect the quality of panel stretching parts, and to analyze and control them in practical work, fundamentally improving the quality of panel stretching parts and laying the foundation for obtaining a better automotive appearance.

   In recent years, there have been many new developments in the forming process of automotive stamping parts, especially in new technologies such as precision punching, precision forming, precision shearing, composite material forming, superplastic forming, soft mold forming, and electromagnetic forming. The precision of automotive stamping parts is increasing day by day, and the production rate is also greatly improving. Stamping processing is being raised to a high-quality and new level of development. In previous years, precision stamping mainly referred to precision punching of flat parts. However, now, in addition to precision punching, precision bending, deep drawing, stamping, etc. can also be used for three-dimensional precision forming of complex parts.

   Due to the introduction of CAE, stamping forming has gradually evolved from finite element analysis of stress and strain to the use of computers for process simulation and analysis, in order to achieve optimal design of the stamping process. Computer-aided design has also been developed in the design of stamping blanks, which can optimize the layout or drawing blanks.

   In addition, the research on stamping forming performance and forming limit, the determination of forming difficulty of stamping parts, and the development of forming prediction technologies all mark that stamping forming has embarked on the scientific stage guided by stamping theory from the original experience and experimental analysis stage, leading to the development path of Computer-aided engineering and intelligence of stamping forming.

   In order to meet the needs of large-scale and efficient production, various automated feeding and discharging mechanisms have been widely used in stamping molds and equipment. For large stamping parts, such as automotive panels, specialized robotic arms or robots are equipped, which not only greatly improves the quality and productivity of stamping parts, but also increases the safety of stamping work and workers. In the mass production of small and medium-sized parts, multi-station progressive molds, multi-station presses, or high-speed presses are now widely used. In terms of small batch and multi variety production, flexible manufacturing systems are being developed. In order to adapt to the need for continuous mold replacement during multi variety production, a rapid mold replacement system has been successfully developed. Now, replacing a large stamping mold can be completed in only 6-8 minutes. In addition, in recent years, integrated manufacturing systems have also been introduced into stamping processing systems, with the emergence of stamping processing centers, which have fully automated design, stamping production, part transportation, warehousing, quality inspection, and production management.

   Stamping processing is achieved through molds. From the perspective of molds, the level of mold production technology has become an important indicator of a product's manufacturing level, as molds largely determine the quality, efficiency, and development ability of new products. The consensus has also been reached that molds are the basic process equipment for industrial production. According to statistics, 60% to 80% of components in products such as electronics, automobiles, motors, electrical appliances, instruments, meters, home appliances, and communication rely on molds for forming. The high precision, high complexity, high consistency, high productivity, and low consumption of using molds to produce parts are unmatched by other processing and manufacturing methods. At the same time, stamping processing has also created huge value added. Moulds are "benefit amplifiers", and the value of products produced with molds is often dozens or hundreds of times the value of the molds themselves. It can be seen that sheet metal stamping and its mold manufacturing technology have made and will continue to make significant contributions to the development of the national economy. With the development of China's economy, the demand for the development of this production technology and professional technical talents will continue to increase. Therefore, strengthening the research on sheet metal stamping and its mold manufacturing technology is of great significance.