The innovation of precision stamping die technology has been greatly improved

In recent years, the overall technical level of advanced precision stamping dies has improved rapidly, and the performance indicators of die technology, manufacturing accuracy, service life and manufacturing cycle have been significantly improved. A considerable number of high-end and high-quality molds have reached the overall level of Close to the international level of similar molds. For example, the service life of the air conditioner fin progressive die produced by a domestic company can reach 500 million strokes, and it is in a leading position in the country in terms of production scale and technological development. The developed 0. 4 mm pitch high-precision miniature connector progressive die has a manufacturing accuracy of 0.5, and the smallest punch 0. 13 mm is directly ground to a mirror surface, which ensures that the smallest pin of the part is 0. 17 mm. High precision requirements such as 0. 01 mm bending accuracy and S-shaped bending. The motor iron core automatic lamination progressive die has a service life of more than 150 million strokes. The technical level and lamination technology are close to the advanced level of similar foreign molds. The developed 0.5 m diameter large iron chip progressive die produced on a 400 t high-speed punch, the 0.88 m square iron chip with a 90° rotating large precision block compound die and the 1.2 m diameter stator and rotor piece Specialized production levels and capabilities such as super-large precision die are in a leading position in China. Specialization has greatly improved the innovation ability of precision stamping die companies, and the technological level has developed in the direction of specialization, precision, excellence and strength, and many high-tech precision stamping dies and new technologies have emerged. The step-by-step precision progressive die for air-conditioning fins can meet the fast switching production of five types of fins. It has certain flexible production characteristics, and the die level is equivalent to the international advanced level. Lead frame 37-station progressive die, one die with three rows, 48 u200bu200binner and outer lead legs are punched within 1212 mm, the minimum spacing is 0.12 mm, and the flatness of the product is within 0.01 mm. Its high-speed batch production performance and life are better, and it has obtained structural innovation patents. Many domestic precision stamping dies have a smaller and smaller gap with the international advanced level in terms of life and main performance. The overall level of some precision stamping dies not only completely replaces imports, but also a considerable part of the mold is exported to the United States, Japan and other developed industries. Countries and regions. The overall level of precision dies in my country is close to the international advanced level, and a considerable number of precision dies are going abroad. The in-depth analysis of the precision stamping die industry from 2016 to 2021 and the 'Thirteenth Five-Year' development planning guidance report show that with the continuous emergence of new processes and new products, foreign stamping dies have moved from conventional single progressive dies to multi-functional combined dies, The production line is developing in the direction of supporting combined mold tooling, super-large progressive dies, and micro-parts stamping and forming dies, while most Chinese companies still focus on the serialization and industrialization of conventional single-pair progressive dies, and have not yet mastered special high-tech products. Sophisticated molds, such as the key technologies for forming stamping dies for extra-large, high-precision, ultra-high-speed, ultra-thin, super-strength and micro-parts, are not designed 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. Previous: The advantages of PVD ion coating and vacuum evaporation coating