Characteristics and application fields of high-speed precision stamping technology

High-speed precision stamping technology is an advanced manufacturing technology for modern stamping production. It combines high-speed precision press technology, high-precision variable stamping die technology, high-quality product material technology, intelligent control technology and green as an integrated high-tech. The application of high-speed precision stamping technology to mass-produce products has the characteristics of high production efficiency, high quality, high consistency, energy saving and consumption reduction, manpower saving, cost reduction and safe production. Therefore, it has been increasingly used by various industrial production departments of the national economy. Pay attention. At present, modern advanced manufacturing technology is the subject of research and development in countries all over the world, especially in today's highly developed market economy, it occupies a very important position.

Mould expert Luo Baihui said that high-speed precision stamping die technology is mainly based on the use of sheet metal to process products. It consists of three basic elements: high-speed press equipment, precision stamping die, and high-quality coil material. A stamping automated production line that is coordinated and connected with leveling device, feeding device, material lubricating device, part-out device, part-managing device, and material-receiving device, and is combined according to the stamping process.

Stamping automation can not only greatly increase labor productivity, improve working conditions, and reduce costs, but also effectively ensure personal safety in stamping production and fundamentally change the appearance of stamping production. Therefore, it is widely used in electronics, communications, Automobile, machinery, military industry, light industry, electrical machinery and electrical appliances, instrumentation, medical equipment, automation equipment and household appliances manufacturing fields. The application in the manufacturing fields of rail transit, aerospace, new energy and other products is also becoming more and more extensive.

Application of high-speed press technology

With the rapid development of electronic communications, electrical appliances, automobiles and home appliances and other product technologies, the demand for precision stamping parts is increasing, the technical requirements are getting higher and higher, and the applications are becoming more and more extensive. Therefore, in mass production and super mass production, ordinary presses can no longer meet the production and technical requirements. The use of high-speed precision presses for high-speed, automated and continuous stamping is an effective way to improve stamping productivity. Since the slide stroke per minute of the high-speed precision press is more than 5 times higher than that of the ordinary press with similar tonnage, the high-speed precision press not only has high precision of stamping parts, good surface quality, and long service life of the mold.

In recent years, stamping technology has continuously developed in the direction of high-speed, precision and intelligence, which has promoted the development momentum of high-speed presses. As a result, many high-speed precision presses and ultra-high-speed precision presses have emerged, such as Small-tonnage high-speed precision presses developed by German Raster Company, American Münster Company, Swiss Brudel Company, German Schuler Company, Nihon Nozori and Densan Company, etc., have slide strokes up to 2,000 times/ Minutes, 3,000 times/minute, 4,000 times/minute. Under load, it can also meet the super precision requirements in its standard. This indicates that the technology of high-speed precision presses has developed to a stage of ultra-high-speed and ultra-precision.

Some foreign companies divide small-tonnage high-speed precision presses into four speed levels according to the number of strokes of the slider: normal speed? Q250 times/minute, sub-high speed? ? 250~400 times/minute, high speed? ? 400~1,000 times/minute, super high speed? R1,000 times/minute. Large-tonnage high-speed precision presses have relatively low slide strokes. For example, a 300-ton large-scale high-speed precision press has only 160-400 strokes per minute, and a 100-ton fin-specific high-speed precision press. The range of the number of strokes of the slider is generally about 150 to 250 times per minute.

Since the stamping speed varies with many factors such as the tonnage of the press, the length and number of strokes of the slider, the process structure of the product and the performance of the material, the speed and accuracy of the automatic feeding, it is difficult to divide the levels with simple numbers Luo Baihui said that at present, the speed range of high-speed precision presses has not yet been clearly defined in the world. Usually, the stamping speed is 5-10 times higher than that of ordinary presses as high-speed precision stamping. From the perspective of the application of high-speed precision presses in most Chinese companies, the stroke speed is the average of the lowest and highest strokes of the slider or a stroke speed greater than 10-20% of the average is a more reasonable and meaningful standard. . Because the highest stroke number of the slider of a high-speed precision press generally refers to the number of strokes without load. When the number of strokes reaches a certain value, the imbalance phenomenon of the press during operation will increase significantly, and the dynamic change of the bottom dead center of the slider will also be greater. In this way, it is necessary to solve the coil quality, feeding speed, mold performance and life, A series of technical issues such as equipment strength, rigidity and accuracy, automatic monitoring and stability of faults, vibration and noise, and lubrication and cooling systems. Therefore, the stroke speed in the application of high-speed precision presses is quite critical.