Development And Perfection Of Precision Stamping Die

In recent years, stamping dies have a strong momentum of development in the fields of automation equipment, hardware, aerospace new energy, medical devices, energy conservation and emission reduction. At the same time, in this year's Guangzhou International Mold Exhibition, not only the number of exhibitors is large and the variety coverage is large, but also the technical content and mold quality are much higher than those in previous mold exhibitions, in which the precision multi station progressive die occupies the mainstream position. The technical level, manufacturing accuracy, service life, manufacturing cycle and other performance indicators of precision stamping dies have been significantly improved. Their overall technical level has been improved rapidly. The overall level of a considerable number of high-grade and high-quality dies has been very close, and even reached the international level of similar dies.

For example, the service life of some air conditioner fin progressive dies can reach 500 million strokes, and the production scale and technological development have reached a certain height. At the same time, the manufacturing accuracy of high-precision 0.4mm spacing micro connector progressive die can reach 0.5um, and the smallest punch is 0.13MM, which directly achieves the mirror effect. At the same time, it also ensures the high-precision requirements such as the thinnest pin of the part is 0.17mm, the bending accuracy is 0.01mm and S-bend. Some motor core automatic Lamination progressive dies have a service life of more than 150 million strokes. The technical level and lamination technology are close to the advanced level of similar dies abroad. The professional production level and capacity of the developed large iron chip progressive die with a diameter of 0.5m and produced on a 400 ton high-speed punch, the large precision block composite die with 90 rotation of 0.88M square iron chip and the super large precision die with a diameter of 1.2m stator and rotor are in a leading position in China. Specialization has greatly improved the innovation ability of stamping die enterprises, and the technical level has developed in the direction of specialization, precision, excellence and strength. Many high-tech precision stamping dies and new technologies have emerged.

It is reported that the stepping precision progressive die for air conditioning fins to be exhibited this time can meet the rapid switching production of five types of fin shapes, has certain flexible production characteristics, and the die level is equivalent to the international advanced level. The lead frame of the first mock exam is 37 station progressive die, one module and three rows, and 48 internal and external lead legs are punched in 1212mm, the minimum spacing is 0.12mm, and the flatness of the product is within 0.01mm. Its high-speed batch production performance and service life are equivalent to the international advanced level, and has obtained the structural innovation patent. Compared with the international advanced level in terms of service life and main performance, the gap between many domestic precision stamping dies is becoming smaller and smaller. The overall level of some precision stamping dies is equivalent to the international advanced level.

They not only completely replace imports, but also export a considerable number of dies to the United States, Japan and other industrial developed countries and regions. The overall level of precision dies in China is close to the international advanced level, and a considerable number of precision dies are going abroad to participate in the world competition.