轻量化构件弯曲短流程工艺研究现状与进展刘志文.pdfVIP

24 8 2014 8 Volume 24 Number 8 The Chinese Journal of Nonferrous Metals August 2014 1004-0609(2014)08-2003-10 1, 2 1, 2 (1. 410082; 2. 410082) 2D 15 − − − − TG306 A Review of bending short process for lightweight component LIU Zhi-wen1, 2, LI Luo-xing1, 2 (1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China; 2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China) Abstract: Taking into account of the requirements in terms of aerodynamics, structural mechanics and aesthetics, automotive aluminum components are generally needed to be bended into a certain curvature. So, it proposes a higher demand on the quality of products. The key technology of producing space frame structure lies in how to achieve the high precise bending process of lightweight component. Several traditional 2D-cold bending processes and their preventive measures were firstly discussed. However, it is difficult to control and avoid the defects of traditional cold bending process and high manufacturing cost. New bending processes of high efficiency, short process and lower co