航空学报 > 2010, Vol. 31 Issue (6): 1272-1279

飞机机身-机翼接头精加工条件评价技术

刘楚辉1,2, 李江雄1, 董辉跃1, 王青1, 柯映林1   

  1. 1.浙江大学 机械工程学系2.嘉兴学院 机械工程系
  • 收稿日期:2009-06-05 修回日期:2009-08-24 出版日期:2010-06-25 发布日期:2010-06-25
  • 通讯作者: 柯映林

Finish Machining Condition Evaluation Technology for Aircraft Fuselage-wing Joints

Liu Chuhui1,2, Li Jiangxiong1, Dong Huiyue1, Wang Qing1, Ke Yinglin1   

  1. 1. Department of Mechanical Engineering, Zhejiang University2. Department of Mechanical Engineering, Jiaxing College
  • Received:2009-06-05 Revised:2009-08-24 Online:2010-06-25 Published:2010-06-25
  • Contact: Ke Yinglin

摘要:

在飞机机身部件数字化对接装配过程中,为保证机身-机翼接头配合面与连接孔精加工的安全性,在加工前安排机身-机翼接头的在线三坐标测量工序。具体阐述了基于专用数控机床的机身-机翼接头测量方法,提出了被测孔与平面理想几何要素的稳健最小二乘拟合方法,并给出了基于被测孔、面拟合方位的机身-机翼接头可加工性评价模型。仿真结果表明:接头孔与平面的稳健拟合方法具有较高的精度和较强的抗粗差能力,机身-机翼接头的可加工性检验能揭示不合理的飞机机身、机翼位姿所带来的加工安全隐患,从而避免精加工过程破坏机身-机翼接头。

关键词: 飞机装配, 坐标测量, 稳健拟合, 精加工, 机身-机翼接头

Abstract:

To guarantee the finish machining security of fuselage-wing matching plane and joint hole during the numerical join assembly of aircraft fuselage subassemblies, an automated three-coordinate measurement procedure for fuselage-wing joints is suggested before formal machining. The corresponding measuring method based on special purpose computer numerical control (CNC) machine tool is illustrated. Then, a robust least square fitting algorithm for measured hole and plane is proposed, and a finish machining condition evaluation model for fuselage-wing joints is put forward based on these fitting results. Simulation results show that the robust least square fitting algorithm has good accuracy and strong anti-gross error ability, and besides, hidden troubles of joint finish machining process caused by improper posture of fuselage or wing can be found out, thus momentous damage of fuselage-wing joints can be avoided.

Key words: aircraft assembly, coordinate measurement, robust fitting, finish machining, fuselage-wing joints

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