Several problems in the design and manufacture of precision stamping dies

(1) In terms of mold design and manufacturing technology, the precision stamping mold design and manufacturing technology innovation is not enough. The key design connotation and technology in many advanced molds and the basic technology, theory and core technology such as 'KNOW HOW' in the manufacturing process are not mastered enough, which leads to the overall mold It is difficult to improve the level, and it is always in the technical follow-up and tracking stage. It has reached or exceeded the international advanced level and lacks the support of relevant design and manufacturing basic technology.　　(2) In terms of die life, 　　 due to the impact of mold materials, heat treatment technology, manufacturing and assembly technology and other related factors, the life of stamping dies in China is generally lower than the international advanced level, with a gap of more than 30%. In particular, the low life of one-time sharpening leads to an increase in the number of mold maintenance, which reduces the efficiency of stamping production and increases the cost of mold maintenance, which in turn affects the market competitiveness of Chinese molds. (3) Mold trial technology and mold reliability. Trial mold is a comprehensive experiment, evaluation and adjustment process for molds after the design and manufacture of precision stamping molds. It is a concentrated exposure process of mold design and manufacturing problems, and it is also a stamping mold design. , Manufacturing technology and comprehensive reflection of professionals. The reliability and stability of the mold are the evaluation criteria for the quality of mold design and manufacturing and the guarantee for the normal use of the mold. As China lacks in-depth exploration of the design of multi-station and multi-function stamping dies, the invisible knowledge and technology accumulation in the manufacturing process, compared with the international advanced mold companies, the trial of multi-station and multi-function stamping dies, The adjustment and maintenance time during mold use has increased by more than 30%. Compared with foreign countries that are currently studying the cutting-edge technology of molds without test procedures, the gap between China's mold test technology and the reliability and stability of the mold is obvious. (4) The basic theory and key technology of molds is a highly practical expertise of precision stamping mold designers and manufacturers. For a long time, China has attached great importance to the practicality of mold design and manufacturing, but due to the basic theory and Insufficient attention to technical research has led to the slow development of basic theories and technologies for mold design and manufacturing. In addition, the specialization of stamping die companies is not detailed enough. Small but complete, large and complete mold companies are still dominant. The core competitiveness of the company is difficult to form. The company's own technology and innovation capabilities lag behind foreign advanced mold companies. . In addition, the backward technology of mold materials, standard parts and other molds directly affects the overall technical level of China's multi-station and multi-function stamping dies. Therefore, there are still many weak links in the basic technical support of multi-station and multi-functional stamping dies. (5) New mold technology and its expansion. With the continuous emergence of new processes and new products, foreign stamping dies have moved from conventional single-pair progressive dies to multi-functional combined molds, production line supporting combined mold tooling, extra-large progressive dies, and The development of micro-parts stamping and forming dies, and most Chinese companies still focus on the serialization and industrialization of conventional single-pair progressive dies, and have not yet mastered special high-precision dies such as super large, high-precision, and ultra-high-speed stamping. The key technology of forming stamping dies for ultra-thin, super-strong and micro-parts, there are not many designs for multi-functional composite dies. Therefore, China also needs to continue to carry out research on the key technologies of new molds, expand its application areas, and lay a solid foundation for catching up with and surpassing the international advanced level. (6) In terms of basic parts and supporting parts, the basic parts and supporting parts of multi-station and multi-functional stamping dies are the basic conditions for the rapid development of the overall mold. However, due to heat treatment, materials, standard parts and other basic mold parts and supporting parts in China The level of technology and quality is low, and the basic parts and accessories of high-end molds mainly rely on imports. Therefore, China urgently needs to improve the technology and quality level of basic mold parts and accessories.