航空学报 > 2019, Vol. 40 Issue (2): 522635-522635   doi: 10.7527/S1000-6893.2019.22635

大型机翼整体壁板系统化喷丸成形技术

赵安安1, 张贤杰2, 高国强1,2, 刘立彬3, 王永军2   

  1. 1. 航空工业西安飞机工业集团(有限)责任公司, 西安 710089;
    2. 西北工业大学 机电学院, 西安 710072;
    3. 中国人民解放军驻西安飞机工业(集团)有限责任公司军事代表室, 西安 710089
  • 出版日期:2019-02-15 发布日期:2019-03-02
  • 通讯作者: 高国强 E-mail:1592349590@qq.com
  • 基金资助:
    国家级项目

A systematic method of shot peen forming of large integral wing skin panels

ZHAO An'an1, ZHANG Xianjie2, GAO Guoqiang1,2, LIU Libin3, WANG Yongjun2   

  1. 1. AVIC Xi'an Aircraft Industry(group) Company Limited, Xi'an 710089, China;
    2. School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
    3. The Chinese People's Liberation Army's Military Delegate Office, Xi'an Aircraft Industry(group) Company Limited, Xi'an 710089, China
  • Online:2019-02-15 Published:2019-03-02
  • Supported by:
    National project

摘要: 大型机翼整体壁板是现代大型飞机重要的大型承力整体结构件并且通常直接构成飞机的气动外形。喷丸成形是现代大型轻质高强铝合金整体壁板件成形制造的首选技术方法,但如何实现大型机翼整体壁板的精确喷丸成形一直是现代航空制造技术领域的一个难点问题。针对这一工程问题,本文采用系统化的方法,将影响大型机翼整体壁板喷丸成形精度的因素分解为壁板平面板坯误差、成形参数设计准确度、成形参数控制精度、环境因素。针对这些因素,采用基于变形位能最小的板坯优化设计来减小由板坯导致的成形误差;采用数据拟合、人工神经网络以及解析模型计算相结合的喷丸成形参数综合设计方法来提高喷丸参数设计的精度和效率;建立了板坯修正模型以修正环境温度、喷丸设备参数波动等因素对成形件形状和尺寸的影响;对于从喷丸设备上下线后仍存在的外形贴模误差,则采用手提喷丸机进行局部的渐进式校形喷丸至外形贴模。壁板喷丸成形的工程实践表明,本文所提出的系统化方法能够有效提高大型机翼整体壁板喷丸成形的精度和效率,并可满足工业生产的需求。

关键词: 大型机翼, 整体壁板, 喷丸, 喷丸成形, 系统化方法, 精确成形

Abstract: Large integral wing skin panels are important integral structures of modern large aircrafts. These panels usually constitute the aerodynamic shape of aircraft directly. Shot peening is generally the preferred process for the forming of modern large wing skin panels made of high strength aluminum alloy. It is, however, still a difficult issue to precisely shot peen form these large wing skin panels in modern aircraft manufacturing industry. In this paper, a systematic method is proposed for shot peen forming of large wing skin panels. The factors that may influence the precision of shot peen formed large wing skin panels are classified into error of plane panel, accuracy of designed process parameters, control accuracy of process parameters, and environmental factors. The plane panel is optimized by minimizing deformation potential energy to reduce the dimension error induced by plane panel. To increase their accuracy and efficiency, the peening parameters are comprehensively designed by a combination of methods of data fitting, artificial neural network, and analytical model. Correction formulae for plane panel are presented to account for the influence of environmental temperature and oscillation of peening parameters to the final shape and dimensions of the shot peened wing skin panel. Portable shot peening machine is used to locally and gradually correct the panel from peen forming line to its desired shape. Industrial practice on shot peen forming of wing skin panels shows that the systematic method presented in this paper can effectively improve the precision and efficiency of wing skin panel shot peen forming and fulfill the requirement of industrial production.

Key words: large wing, integral wing skin panel, shot peening, shot peen forming, systematic method, precise forming

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