金属空心构件柔性成形技术研究进展

Metal hollow members with complex spatial axes or complex special-shaped sections are widely used in the fields of aerospace, rail transit, nuclear energy engineering and architectural decoration, and bear the important functions of medium transmission and structural bearing, which is often called "blood vessel" or "lifeline" in core equipment.Most of the forming methods of metal hollow components rely on forming dies to realize the plastic deformation of metal material, which is difficult to meet the comprehensive requirements of component shape complexity and forming quality. This paper introduces the flexible forming technology and research progress of metal hollow components. By planning the motion trajectory of the forming mechanism, the local metal materials produce multi-pass cumulative plastic deformation to realize the overall flexible forming of complex metal hollow components. This paper introduces the research progress of flexible forming of metal hollow components suitable for different spatial axes and different types of sections from the basic principle, process method and equipment development of flexible forming technology, and summarizes the development direction of flexible forming technology of metal hollow components in the future.