摘要
“彩虹”零件具有尺寸长、曲率大、变截面且夹角小,且一半整体下陷、结构扭曲等复杂特征。长期以来,这类复杂零件均采用“落压成形+手工校正”的成形方法,成形质量差,后期需要大量的手工校正工作,导致加工效率和合格率都极为低下。通过分解零件结构特征,分析现有技术与设备资源,提出了“型材+板材”的跨专业组合成形工艺方案,并探索型材拉弯成形技术在大曲率、变截面、小夹角航空钣金构件成形上的应用。通过工艺试验,对零件成形参数进行验证并不断优化,最终实现该零件的精确成形。
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.
作者
李晓军
董锦亮
门向南
邓涛
曾一畔
成靖
LI Xiaojun;DONG Jinliang;MEN Xiangnan;DENG Tao;ZENG Yipan;CHENG Jing(AVIC Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610092,China)
出处
《航空制造技术》
2020年第7期96-101,共6页
Aeronautical Manufacturing Technology
基金
四川省重点研发项目(2018GZ0063)。
关键词
彩虹零件
复杂特征
落压成形
拉弯成形
组合成形
精确成形
“Rainbow”part
Complex characteristics
Hammer forming
Stretch bending
Combined forming
Accurate forming
