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Analysis of the status quo of advanced stamping die in China


Marking the advanced level of stamping die is high-precision, long-life, multi-station progressive die, which has the characteristics of complex structure, difficult manufacturing, high precision, long life, high production efficiency and low consumable energy consumption. One of the varieties of precision molds developed. 

A representative motor core automatic lamination carbide multi-station progressive die with an accuracy of 2 m, step accuracy of 3 m, double rotation accuracy of 1, block precision of 1 m, surface roughness Ra0.1~ 0.4 m, life expectancy 100 million times; American Oberg, Japan Kuroda, France Baojie time and other motor iron core double-row automatic lamination mold, precision 1 m, step accuracy 2 m, mold life 200 million times. Although the accuracy is close to the advanced level in foreign countries, there is a certain gap in life expectancy. 

High-level air-conditioner fin multi-station progressive die with an accuracy of 2 m, nearly 1000 working faces of convex and concave molds, more than 300 punching gaps of 0.01 mm, and up to 36 fins per punch. Column, mold life of more than 200 million times; Japan's high-precision machine, the United States OAK, Italy GBS company's 36-72 number of fin-level progressive die, accuracy of 2 m, step accuracy of 3 m, life expectancy of more than 500 million times . Similarly, the accuracy is close to the advanced level in foreign countries, but there is a big gap in mold life. 

Reflecting the difficult forming of the color tube electron gun parts (G5) 25 station carbide grade die, the precision is up to 2 m, the mold is applied on the high-speed punching machine, punching 0.245mm thick non-magnetic stainless steel, after each process, The precision of the product is ±5 m, the mold life is more than 30 million times; the color tube electron gun part-level progressive die manufactured by Toshiba and Hitachi Japan has an accuracy of 2 m, a step accuracy of 3 m and a mold life of more than 50 million times. . There is also a gap in mold life. 

High-performance integrated circuit frame 32-position progressive die with an accuracy of 2 m, a high-speed punching speed of 350-500 beats/min, and a life expectancy of more than 30 million times; manufactured by Yamada, USA, and Auberge, USA The integrated circuit frame module with more than 100 feet has an accuracy of 2 m, a step accuracy of 3 m, and a die life of 100 million times. 

There is also a 50-station progressive die for mobile phone connector with independent innovation, accuracy of 2μm, step accuracy of 3μm, die life of 200 million times; digital camera spring 18-station progressive die, connector 46-position progressive die, etc. Both reached a higher level.

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