The technical application of Dongguan CNC processing plant has not only brought revolutionary changes to the traditional manufacturing industry, making the manufacturing industry a symbol of industrialization, but also with the continuous development of CNC technology and the expansion of application fields, it is important for the national economy and people’s livelihood (IT , Automobiles, light industry, medical, etc.) are playing an increasingly important role, because the digitalization of equipment required by these industries has become a major trend in modern development. Judging from the current development trend of numerical control technology and equipment in the world, the main research hotspots are as follows.
The new trend of high-speed, high-precision processing technology and equipment, efficiency and quality are the mainstay of advanced manufacturing technology. High-speed, high-precision processing technology can greatly improve efficiency, improve product quality and grade, shorten production cycle and improve market competitiveness. For this reason, Japan Advanced Technology Research will list it as one of the five major modern manufacturing technologies, and the International Society of Production Engineering (CIRP) has identified it as one of the central research directions in the 21st century.
In the aerospace and aerospace industries, most of the parts processed by the Dongguan CNC processing plant are thin walls and thin ribs, with poor rigidity. The material is aluminum or aluminum alloy. It can only be used when the cutting speed is high and the cutting force is small. Process these ribs and walls. Recently, large-scale aluminum alloy blanks have been "emptied" to manufacture large parts such as wings and fuselages to replace multiple parts. They are assembled by numerous rivets, screws and other coupling methods, so that the strength, rigidity and reliability of the components can be obtained. improve. All these put forward high-speed, high-precision and high-flexibility requirements for processing equipment. Judging from the EMO2001 exhibition, the feed speed of the high-speed machining center can reach 80m/min or even higher, and the dry running speed can reach about 100m/min. At present, many automobile factories in the world, including my country's Shanghai General Motors Corporation, have adopted high-speed machining centers to partially replace modular machine tools. The HyperMach machine tool from CINCINNATI of the United States has a maximum feed rate of 60m/min, a rapid rate of 100m/min, an acceleration of 2g, and a spindle speed of 60,000r/min. It takes only 30 minutes to process a thin-walled aircraft part, while the same part needs 3h to process on a general high-speed milling machine, and 8h on a general milling machine; the spindle speed and acceleration of the dual-spindle lathe from DMG in Germany are up to 120000r/mm and 1g.
Regarding the machining accuracy of Dongguan CNC processing plant, in the past 10 years, the machining accuracy of ordinary CNC machine tools has been increased from 10μm to 5μm, and the precision machining center has increased from 3～5μm to 1～1.5μm, and the ultra-precision machining accuracy has been improved. Began to enter the nanoscale (0.01μm). In terms of reliability, the MTBF value of foreign numerical control devices has reached more than 6,000h, and the MTBF value of the servo system has reached more than 30,000h, showing very high reliability. In order to achieve high-speed and high-precision machining, the supporting functional components such as electric spindles and linear motors have been developed rapidly, and the application fields have been further expanded.