陕西研发新设备破解大飞机蒙皮加工难题

Group 1 - The core achievement of AVIC Xi'an Aircraft Industry Group is the successful development of a 12-meter horizontal dual five-axis mirror milling equipment and mirror milling process technology, addressing the manufacturing challenge of ultra-large, ultra-thin skin parts that are prone to deformation due to their weak rigidity [1][2] - The large curved skin of the domestically produced Y-20 transport aircraft is characterized as a "metal film," combining ultra-large size and ultra-thin properties, which makes it a typical weak rigidity component that is difficult to process with traditional CNC equipment [1] - The company has established a technological system for the processing of large curved skins through collaborative efforts in innovation and research, overcoming multiple core technical challenges [1] Group 2 - The successful development of the new milling technology provides strong support for the research and mass production of China's Y-20 and C919 aircraft, highlighting the country's independent innovation capabilities in high-end aerospace manufacturing [2] - The innovative design of the "stress line closed thermal symmetrical space frame within a frame" structure has broken through the design bottleneck of large horizontal five-axis machine tools, meeting the automation and high-precision processing needs for ultra-large, ultra-thin skins [1][2] - The technology includes dual five-axis linkage mirror synchronous control and real-time closed-loop measurement of wall thickness, addressing technical challenges in the mirror milling CNC system [1]