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| Research on Forming Technology of Complex Aeronautical Sheet Metal Components With Large Curvature and Variable Section |
| LI Xiaojun, DONG Jinliang, MEN Xiangnan, DENG Tao, ZENG Yipan, CHENG Jing |
| (AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610092, China) |
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Abstract The “rainbow” part has such complex characteristics as long size, large curvature, variable cross-section and small angle, half of which is joggle, structural distortion and so on. For a long time, this kind of complex parts had been formed by the method of “hammer forming + manual correction”. The forming quality was poor, and a lot of manual correction work was needed in the later stage, resulting in low processing efficiency and qualified rate. In this study, by disassembling the structural characteristics of the part, the existing technology and equipment resources, a cross-specialty combined forming process of “profiles + sheets” was proposed, and the application of stretch-bending technology of profiles in the forming of aeronautical sheet metal components with large curvature, variable cross-section and small angle was explored. Through the process test, the forming parameters of the part are verified and optimized continuously, and the precise forming of the part is finally realized.
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| [1] |
. [J]. Aeronautical Manufacturing Technology, 2016, 59(13): 50-55. |
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2020, 
