China's automotive stamping hardware mold prospects

In recent years, the level of stamping dies in China has greatly improved. Large stamping dies have been able to produce a single set of molds weighing more than 50 tons. The cover molds for mid-range cars can also be produced domestically. According to Luo Baihui, the secretary-general of the International Model Association, the stamping molds in China have achieved great development in terms of quantity, quality, technology, and capability. However, compared with the needs of the national economy and the advanced world level, the gap is still very high. Large, some large-scale, sophisticated, complex, long-life high-grade molds are still imported in large quantities every year, especially the cover molds for mid- to high-end cars, which are still mainly imported.

Automotive mold design and manufacturing capabilities

The 21st century has entered the information age. The development of the information age is changing with each passing day. The development of the mold industry and enterprises must grasp the pulse of the times and consciously and actively adjust their own technological structure. The traditional mold design and manufacturing technology must be carried out with advanced and applicable high and new technology. The technical content of molds will surely increase gradually and rapidly, and modern industrial enterprise management technology will also gradually replace the workshop-style management model. After decades of efforts, the design and manufacturing capabilities of stamping dies in our country have reached a high level. Many modern design and manufacturing technologies, including information engineering and virtual technology, have been applied in many mold companies. In spite of this, China's stamping mold design and manufacturing capabilities still have a big gap compared with the market needs and the international advanced level.

Around the automobile body trial production and rapid manufacturing of large-scale cover molds, some new rapid prototyping methods have emerged in recent years. For example, moldless multi-point molding and laser shock and electromagnetic molding technologies have been used in production. All of them show the advantages of reducing costs and improving efficiency. These are mainly manifested in high-end cars and large and medium-sized car cover molds and high-precision die, in terms of design and processing technology and capabilities, there is a big gap. The car cover mold has the characteristics of great difficulty in design and manufacture, high quality and precision, and can represent the level of the cover mold.

Although the design and manufacturing methods and methods have basically reached the international level, the function of the mold structure is also close to the international level, and a big step has been made in the localization of car molds, but in terms of manufacturing quality, precision, and manufacturing cycle, etc. There is still a certain gap in comparison with foreign countries. The automotive panel mold manufacturing technology is constantly improving and improving, and the use of high-precision, high-efficiency processing equipment is becoming more and more widespread. Luo Baihui, the secretary-general of the International Model Association, pointed out that the application of high-performance five-axis high-speed milling machines and three-axis high-speed milling machines has been increasingly applied. The application of NC and DNC technology is becoming more and more mature, and it is possible to perform tilt processing and superfinishing. All of these improve the accuracy of mold surface processing, improve the quality of the mold, and shorten the manufacturing cycle of the mold.

The degree of specialization in China's mold industry is still relatively low, and the self-produced proportion of molds is too high. As pointed out by Luo Baihui, the secretary-general of the International Model Association, the proportion of self-produced and self-produced molds in foreign countries is generally 30%, and the percentage of self-produced and self-produced stamping molds in China is 60%. Due to the high proportion of self-distribution, the distribution of stamping die production capacity basically follows the distribution of the stamping part's production capacity. However, there are many professional distribution companies that specialize in auto cover molds and multi-station, multi-function precision dies, which do not follow the distribution of stamping capacity, and often depend on the decisions of major investors. For example, Sichuan has a large capacity of auto parts molds, and Jiangsu has a strong precision die capability, while mold users are mostly not local.

The future of automotive stamping dies

With the continuous improvement of the quality of industrial products, stamping products production is showing a variety of varieties, fewer batches, complex, large-scale, sophisticated, changing characteristics of fast replacement, stamping molds are becoming efficient, precise, long-life, large-scale development. The development focus in automobile panel molds is the medium and high-grade sedan medium and large-sized cover molds with high technical requirements, especially the outer cover molds. High-strength plates and unequal plates of stamping dies and large-scale multi-position progressive dies and continuous dies will have rapid development in the future. According to Jinmo.com, the focus of development in multi-function, multi-position progressive die is high-precision, high-efficiency and large-scale, high-life progressive die. The focus in the development of fine dies is on heavy precision die dies and continuous improvement in accuracy.

In order to increase the life of stamping dies, various hardening superhard processing techniques are also the focus of development. For mold digital manufacturing, system integration, reverse engineering, rapid prototyping/mold manufacturing and computer-aided application technologies, we have formed a comprehensive solution to provide mold development and engineering services, and comprehensively improve the company's level and mold quality, which is stamping mold technology The focus of development.

The die-casting mold structure CAD / CAM technology can significantly shorten the mold design and manufacturing cycle, reduce production costs and improve product quality. Rapid Prototyping (RP) is combined with the traditional rapid economic mold to quickly manufacture large-scale automobile panel molds, solving the problems of low-melting-point alloy molds that rely on sample casting molds, low precision of parts, difficult production of prototype parts, and the like. The three-dimensional CAD model is used as a tool for rapid mold making based on modelling, and the precision of the parts. Through development and adoption, various effective measures are taken to design plastic injection molds. Under the concerted efforts of all employees in the stamping die industry, China's stamping molds will surely continue to improve and gradually narrow the gap with the world's advanced level.