锻压技术

飞机铝合金大型钣金件精确成形研究

英文标题：Research on precise forming process of aircraft aluminum large sheet metal part

作者：白颖张引引赵刚陈磊

关键词：大型钣金件精确成形数值模拟

分类号：TG386

出版年,卷(期):页码：2011,36(4):64-67

摘要：

飞机铝合金大型钣金件成形尺寸大，刚性差，制造难度大。通过对零件结构及装配要求的分析，提出了增大四周拐角角度，减少补加条带长度的改进意见，优化了零件的外形结构。借助双动拉深的优越性，采用了双动拉深的成形方法，确定出合理的制造流程和一套防止零件热处理产生变形的措施，提高了零件的成形准确度。利用有限元数值模拟、理论计算并结合实际试验，优化了展开毛坯的外形尺寸，确定出合理的工装结构以及压边力的最佳数值，达到零件精确成形的要求。

Owing to the large size and low roughness, the forming process of large sheet metal parts of aircraft is difficult. The shape and structure were optimized after increasing the corners and decreasing the length of adding straps based on the analysis of the part structure and assemble requirement. The reasonable fabrication technology and a set of deformation proof measures were defined using deep drawing method that improved the forming approach and the accuracy. By finite numerical simulation, theoretical computation and experiment, profile dimensions of the semi finished products were optimized, the reasonable tooling structure and the best BHP value were determined.Thus the precise forming requirement is satisfied.

基金项目：

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