An automated measurement method for aircraft digital assembly

Abstract

The invention discloses an automatic measuring method for digitalized airplane assembly. The method includes the steps of determining the transforming relationship between all coordinate systems and an assembly coordinate system through measurement preparatory work, transforming theoretical coordinate values of all detection points under the airplane coordinate system to the assembly coordinate system to obtain theoretical coordinate values of all the detection points under the assembly coordinate system, and conducting automatic searching with the theoretical coordinate values of the detection points under the assembly coordinate system as initial light pointing points of a laser scanner to obtain actual coordinate values of all the detection points under the assembly coordinate system. Through the automatic measuring method, digitalized measurement of airplane components is achieved, the problems that the size of airplane space is large, the detection points to be measured are wide in distribution area, manual light guiding at a part of detection points is difficult, and the detection points need to be measured repeatedly in the assembly process are solved, one-off manual installation of a reflector is achieved, multiple automated measurement is achieved, manpower is saved, the measurement time is shortened, and the measurement efficiency and the assembly efficiency are greatly improved.

Description

technical field [0001] The invention relates to the field of aircraft manufacturing, in particular to an automatic measurement method for aircraft digital assembly. Background technique [0002] Aircraft manufacturing is different from general mechanical manufacturing. Aircraft has strict aerodynamic shape and accuracy requirements, complex structure, very compact space, a huge number of parts and connectors, and these parts are complex in shape, large in size, small in rigidity, and easy to deform. , a large number of complex assembly jigs / frames must be used to ensure the accuracy of assembly. The final quality of aircraft products depends to a large extent on the quality of assembly. This is the most significant feature that distinguishes aircraft manufacturing from general mechanical manufacturing. In the process of aircraft manufacturing, assembly and installation work occupies an extremely important position in aircraft manufacturing, and its labor volume accounts for ...

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Problems solved by technology

[0005] The above methods have improved the automation of aircraft measurement to a certain extent, but the artificial light introduction method requires manual intervention, and the degree of automation is low. Due to the large space size of the aircraft, the detection points to be measured are distributed in a wide area, and some detection points are artificially introduced. Difficult to achieve tracking measurement, the position of the measurable point is limited, reducing the measurement efficiency

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