A laser tracking digital flexible assembly measurement system on-site calibration method
A measurement system and flexible assembly technology, applied in the field of geometric measurement, to achieve the effects of good portability, easy construction and simple operation
Active Publication Date: 2018-11-02
BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH +1
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide an on-site calibration method and device for a laser tracking digital flexible assembly measurement system, aiming to solve the problem of the accuracy of large-scale digital flexible assembly measurement systems that have been successfully applied in the field of aerospace and other large-scale advanced equipment manufacturing. On-site calibration of indicators to realize the traceability of the measurement system
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Experimental program
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Embodiment Construction
[0017] The present invention is described in further detail below in conjunction with embodiment.
[0018] A method for on-site calibration of a laser tracking digital flexible assembly measurement system, specifically comprising the following steps:
[0019] Step 1. Fix the linear guide rail stably on the working platform, roughly adjust the level, fix the multi-tooth indexing table on the guide rail slide table, fix the standard distance reference ruler on the multi-tooth indexing table of the guide rail through tooling, and place the laser The reflector of the interferometer is installed on the tooling, the laser interferometer is placed on one end of the guide rail, and the laser of the laser interferometer is adjusted to be parallel to the direction of the guide rail, and the displacement angle standard device is built so far;
[0020] Step 2. Install more than four laser trackers, use each laser tracker to measure common control points, establish the spatial relationship...
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The invention relates to the technical field of geometric metering, and in particular to a field calibrating method for a laser tracking digital flexible assembly measurement system. The method comprises a step 1 of installing an instrument; a step 2 of establishing a measurement coordinate system; a step 3 of constructing and measuring a standard device coordinate system; a step 4 of solving a position and attitude relationship between the standard device coordinate system and the measurement coordinate system; a step 5 of acquiring measured values of displacement and angular variation quantity by the laser tracking digital flexible assembly measurement system; a step 6 of comparing the measured values and reference values provided by the standard device to obtain the system displacement and an angle measurement error; and a step 7 of analyzing system position and attitude measurement uncertainty. The method of the invention can effectively solves the field calibration of the laser tracking digital flexible assembly measurement system, and can realize the calibration of the measurement system to the position and attitude measurement. The standard device relating to the method is good in portability and can be adapted to the assembly field implementation.
Description
technical field [0001] The technical field of geometric quantity measurement of the present invention particularly relates to an on-site calibration method of a laser tracking digital flexible assembly measurement system. Background technique [0002] With the development of advanced equipment manufacturing in the direction of digitalization, automation, and flexibility, digital flexible assembly is an indispensable and important part, and it is equal to digital automatic processing. The digital flexible assembly system is a closed-loop control system integrating digital measurement, flexible motion and automatic control. The measurement unit is the eye of the entire assembly system and an essential part. [0003] The measurement system based on multiple laser tracking is the mainstream method to realize digital flexible assembly measurement, and it has been applied in high-end advanced equipment manufacturing fields such as aerospace and aviation. This method takes the las...
Claims
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IPC IPC(8): G01B11/00
Inventor 刘柯高越董利军宋金城孙增玉陈晓晖许玮熠
Owner BEIJING AEROSPACE INST FOR METROLOGY & MEASUREMENT TECH