The current development status of automotive stamping die technology

The 21st century has entered the information age, and the development of the information age is changing rapidly. The mold industry and enterprises need to develop and grasp the pulse of the times, consciously and actively adjust their technological structure. The traditional mold design and manufacturing technology will be replaced by applicable high technology, and the technical content of molds will gradually increase. Modern industrial enterprise management technology will also gradually replace the workshop style management mode. After decades of effort, the design and manufacturing capabilities of stamping dies in China have reached a relatively high level, and many modern design and manufacturing technologies, including information engineering and virtual technology, have been applied in many mold enterprises. (1) Chinese automotive stamping parts; The mold market has shown a growth trend with the vigorous development of automobiles, but most of the Chinese automotive stamping mold market has been divided by multinational companies around the world. Accelerating the localization of automotive stamping molds is the task of the automotive stamping industry. Without the low cost of domestic stamping molds, there would be no development of domestic cars, which is widely recognized, but low cost does not mean low level. At the same time as low-cost and diverse varieties, the development and improvement of domestic cars cannot be separated from the improvement of the level of domestic stamping parts. Domestic cars will not only continue to develop in the mid to low end market, but also continuously increase their market share in the mid market, and this trend is also evident. This will inevitably put forward higher and higher requirements for automotive stamping parts, which is also an inevitable trend in the automotive stamping parts mold market. Stamping parts enterprises should fully recognize this trend and rely on technological progress to maintain low costs and continuously improve the quality of stamping parts. (2) With the development of lightweight technology for automotive bodies and the increasingly widespread application of CAE and NVH technologies, lightweight, miniaturized, multifunctional, and integrated stamping parts will gradually replace traditional stamping parts through new structural designs and principles, becoming the mainstream of the automotive stamping industry. Due to the slow technological improvement and insufficient capabilities and application capabilities of domestic automotive mold enterprises, the capacity of domestic molds cannot meet the supporting needs of the domestic automotive industry, and a large part of automotive molds still need to rely on them. However, domestic mold companies occasionally have to change their initial market positioning and seize the middle and low-end markets due to insufficient production load. Automotive stamping parts molds are the development direction of mold companies. Although the survival problem of the enterprise has been solved, the low profit margin in the middle and low-end markets has resulted in limited investment and funds, forming a vicious cycle. Due to the large number of domestic middle and low-end automotive mold enterprises, they are facing increasingly fierce market competition. In addition to meeting the quality, cost, and cycle requirements of traditional mold enterprises, domestic automotive mold enterprises will also focus on the development and application of molds, which will become the direction for the future development of the domestic mold manufacturing industry. (3) Multi station progressive die is a type of mold developed on the basis of ordinary progressive die, with a long service life. It is an important representative of technology intensive molds and one of the development directions of stamping dies. This type of mold can not only perform punching and material cutting work, but also complete forming processes such as rib pressing, punching, bending, and stretching according to the characteristics and forming properties of the part structure. It can even complete assembly processes in the mold. When stamping, the strip or strip material is fed into the mold from the entrance end, and under strict control of step accuracy, it is continuously stamped at each station according to the order arranged by the forming process. After punching or cutting at the station, the stamped parts that meet the product requirements can be produced. (4) Precision stamping technology is one of the plastic forming methods for thick plate stamping, which is a high-tech and economically efficient method for producing large quantities and multifunctional black and non-ferrous metal parts. The precision stamping press completes a stamping process and produces one or more formed parts that can be directly used for assembly through processing on the precision stamping mold. Precision stamping parts have been widely used in electronics, computers, power, household appliances, automobiles, and aviation. At present, there are 40 countries in the world that use precision stamping technology. There are nearly 100 types of precision stamping parts on a car (sedan), including transmission forks, seats with adjusters, planetary gears, brake shoes, and steel backs. Precision stamping dies represent the development direction, precision requirements, and service life requirements of stamping dies, mainly for supporting industries such as electronic information, automotive, instrumentation, motors, and electrical appliances. (5) Multi station progressive dies and precision stamping dies have a considerable foundation in China, and technical equipment has been introduced. Some enterprises have produced products that have reached the world level, but most enterprises still have a large gap, and the total supply is in short supply. With the increasing and complex requirements for molds, the demand for mold processing accuracy is also becoming higher. Nowadays, the processing accuracy of many molds has reached ± 1-2 μ m, and it will soon develop to less than ± 1 μ m; As users demand shorter production cycles for molds, mold processing must meet requirements such as flexibility and continuous operation at full load for extended periods of time.