飞机机身-机翼接头精加工条件评价技术

Abstract

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

CLC Number:

V262.4

Liu Chuhui;Li Jiangxiong;Dong Huiyue;Wang Qing;Ke Yinglin. Finish Machining Condition Evaluation Technology for Aircraft Fuselage-wing Joints[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2010, 31(6): 1272-1279.

References

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Finish Machining Condition Evaluation Technology for Aircraft Fuselage-wing Joints

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