Site-establishing method for laser trackers used for digital measurement of aircraft assembly fixture

Abstract

The invention discloses a site-establishing method for laser trackers used for digital measurement of an aircraft assembly fixture. The method includes a step(1) of determining site establishing standards; a step(2) of inputting parameters of the laser trackers; a step(3) of calculating a two-dimensional bounding box of a support plane; a step(4) of obtaining an initial searching input point; a step(5) of reading an optical target point and making judgments of light beam distances and included angles; a step(6) of conducting interference checking; a step(7) of obtaining minimum site number through a combination of a clustering algorithm and a simulated annealing algorithm; a step(8) of increasing the height of the fixture or the trackers and turning to the step (3) for executing searching in the next layer if the obtained minimum site number is zero and turning to a step(9) if the obtained minimum site number is not zero; and the step(9) of loading the laser trackers to the optical site-establishing positions. Therefore, minimum site numbers of different optical target points that can be measured are obtained. Through adoption of the site-establishing method for the laser trackers used for digital measurement of the aircraft assembly fixture provided by the invention, site-establishing positions of the laser trackers can be positioned quickly. A problem of optical path interference caused by that workers establish sites by experience in practical work is avoided effectively and a problem of measurement precision decrease caused by multiple times of station transfer is also avoided.

Description

technical field [0001] The invention relates to the field of aircraft tooling manufacturing in aviation manufacturing, in particular to a laser tracker station setting method for digital measurement of aircraft assembly tooling. Background technique [0002] Due to its high precision, high efficiency, real-time tracking measurement, fast installation, and easy operation, laser trackers are widely used in the installation, measurement and regular inspection of aircraft assembly tools. Due to the large size and complex structure of aircraft assembly tooling, as well as the large number of fixtures and positioning parts, there are quite a lot of optical target points that need to be arranged. In addition, tooling operators generally place laser trackers based on experience. When the station cannot measure all optical target points, it is necessary to repeatedly adjust the station position of the laser tracker, resulting in multiple station transfers, reducing work efficiency an...

AI Technical Summary

Problems solved by technology

[0005] (1) Failure to consider both laser tracker parameters and interference checks;

[0006] (2) Lack of a fast and effective search method for station location

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