Method for measuring positioning points based on laser tracker in docking process of airplane parts

Abstract

The invention discloses a method for measuring positioning points based on a laser tracker in a docking process of airplane parts. The method provided by the invention comprises the following steps of 1, establishing a model of transformation between an airplane global coordinate system and a laser tracker measure coordinate system according to common observation points, 2, acquiring current calculating positions of positioning measure points of airplane parts according to a process joint sphere centre position, and 3, controlling and driving a laser tracker to search current accurate positions of the positioning measure points of the airplane parts from the current calculating positions according to a cross helical search method and to carry out automatic measure. The method provided by the invention has the advantages that 1, an advanced laser measure technology is adopted so that the airplane assembling measure precision is improved; and 2, a measure process does not need artificial light introduction and full automatic search measure of a docking assembling process is realized according to an algorithm so that working efficiency and measure precision are greatly improved and working strength of workers is reduced.

Description

Technical field [0001] The invention belongs to the technical field of positioning point measurement, in particular to a method for measuring positioning points in the docking process of aircraft parts based on a laser tracker. Background technique [0002] Docking assembly of large traditional aircraft components (front, middle and rear fuselage docking, wing fuselage docking, etc.), using optical collimator and plumb as the measurement means for component attitude adjustment, and using manual positioner to achieve aircraft component support and docking . The results obtained by the measurement methods based on these analog quantities not only have large errors, but also the data cannot intuitively reflect the current overall attitude characteristics of the aircraft components, and cannot provide effective guidance for the docking process. Therefore, the docking process of aircraft components completely relies on manual experience and multi-person manual coordination. The labor...

AI Technical Summary

Problems solved by technology

However, this method also has the following problems: 1) Since there are many positioning and measuring points on the part, workers need to repeatedly guide the light to measure, the work intensity is high, and the measurement efficiency is low; 2) Hand-held target ball measurement is easy to cause data measurement fluctuations , causing unnecessary measurement errors; 3) During the docking process of aircraft components, the size of the components is large, and the on-site working conditions are relatively complicated. Convenient, so quick manual measurements are impossible or dangerous

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