Curved surface contour measurement method based on multi-station layout of laser tracker

Abstract

The invention discloses a curved surface contour measurement method based on multi-station layout of a laser tracker. Two laser trackers are respectively arranged on two sides of a curved surface object, and absolute range finders in the laser trackers respectively emit a laser beam and receive, analyze and process the laser beams in combination with a target ball; at least three common measurement points which can be detected by two laser trackers at the same time are arranged on the curved-surface object for measurement, coordinate system unification is carried out, and a plurality of measurement points which can be detected by only one laser tracker are arranged on the curved-surface object for measurement to obtain curved-surface contour measurement data of the curved-surface object. The humiture sensor records humiture and transmits the humiture to the computer through the serial interface, and the humiture is used to compensate the data result of the laser tracker. According to the method, a multi-station measurement scheme is formed by using the two laser trackers and the plurality of target balls, so that a station transfer error caused by station transfer by moving the laser trackers during measurement of a public measurement point is avoided, and the measurement precision and accuracy are improved.

Description

technical field [0001] The invention relates to a laser tracker optimization measurement method in the detection technology field, in particular to a curved surface profile measurement method based on the multi-station layout of the laser tracker. Background technique [0002] The laser tracker is a large-scale absolute distance measuring instrument, which is widely used in the assembly measurement of large components in marine equipment, aircraft manufacturing, rail transit and other fields. In the assembly measurement of large parts, due to the different contours of the measured surfaces and the large size and measurement range, it is usually impossible to use one measurement device to achieve measurement. At present, in the assembly of large parts and components at home and abroad, the main methods of surface measurement using the transfer station are: the single laser tracker transfer station measurement method, the laser tracker and other measuring instruments combined ...

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Problems solved by technology

[0004] In order to solve the problem of reducing measurement accuracy caused by laser tracker transfer stations in the prior art, the present invention provides a surface profile measurement method based on the multi-station layout of the laser tracker, through the multi-station layout of multiple laser trackers combined with the distribution of multiple measurement points , effectively expand the measurement range, improve the accuracy of the transfer station, solve the technical problem of the transfer station error of a single laser tracker, solve the problem of reduced accuracy introduced by the measurement results of the laser tracker transfer station process in the prior art, and realize the three-dimensional large-scale curved surface contour measurement

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