|
In recent years, the overall technical level of advanced precision stamping die has been improved very quickly, and its mould technology level, manufacturing precision, service life and manufacturing cycle have been improved obviously. A considerable number of high-grade high quality moulds have reached or close to the level of the same kind of mould in the country. For example, the service life of the finned progressive die of the air conditioner manufactured by a domestic company can reach 500 million strokes, and the production scale and technology development are in the leading position in China. The precision of the 0.4 mm distance high precision micro connector level progressive die is 0.5, the smallest punch 0.13 mm directly grinding to the mirror, which ensures the finest pin of the workpiece 0.17 mm, the bending precision of 0.01 mm and S shaped bending. The motor core automatic Lamination progressive die has a service life of up to 150 million strokes. The technology level and lamination technology are close to the advanced level of similar die abroad. The specialized production level and ability of large iron chip grade progressive die, 0.88 m square iron chip with 90 degree rotating large precision collage die and 1.2 m diameter fixed rotor blade are developed in the 400 t high speed punch press, and the specialized production level and ability of the 0.5 m diameter fixed rotor blade are in the leading position in China.
With specialization, the innovation ability of precision stamping die enterprises is greatly improved, and the technical level is developing to special, fine, excellent and strong direction, and many high technology precision stamping dies and new technologies have emerged. The air conditioning fin step precision progressive die can meet the rapid switching production of 5 types of pieces, with certain flexible production characteristics, and the mould level is equal to the international advanced level. The lead frame 37 position progressive die, one mold three column, in 1212 mm inside the 48 inner and outer lead leg, the minimum spacing of 0.12 mm, the product flatness within 0.01 mm. Its high-speed batch production performance and life expectancy, and structural innovation patent.
Compared with the international advanced level, the gap of many domestic precision stamping dies is smaller and smaller than the international advanced level. The overall level of some precision stamping dies is not only completely replaced by the import, but also a considerable part of the die export to the developed countries and areas in the United States, Japan and other industries. The overall level of precision die in China is close to the international advanced level, and quite a few precision dies are going abroad.
2016~2021 years of precision stamping die industry depth analysis and "13th Five-Year" development planning guidance report shows that with the continuous emergence of new technology and new products, foreign stamping dies have been from the conventional single secondary die to multi-functional modular mold, production line combined die tooling, super large progressive die and fine parts punching. Most of Chinese enterprises still focus on the conventional single and secondary progressive die serialization and industrialization, and the key technologies of special and high precision mold such as super high precision, super high speed stamping, ultra thin, super and fine and fine forming are still not mastered, and the multi-functional compound die is still not mastered. Not much design. Therefore, China also needs to continue to carry out research on Key Technologies of new moulds, expand its application fields, and lay a good foundation for catching up with international advanced level.
|
