Spaceflight large-size wallboard thickness automatic measuring device and method

Abstract

The invention provides a spaceflight large-size wallboard thickness automatic measuring device, which comprises a first guide rail, two second guide rails, a wallboard and a laser sensor; the wallboard capable of moving along the first guide rail is vertically suspended at the bottom of the first guide rail, and the two second guide rails are vertically arranged in front of and behind the first guide rail; each second guide rail is movably connected with a first laser sensor and a second laser sensor which are distributed up and down, the first laser sensors and the second laser sensors on thetwo second guide rails are symmetrically arranged, and the upper ends and the lower ends of the second guide rails are movably connected into the third guide rails. The beneficial effects of the invention are that the device and method achieves the application of the laser triangulation thickness measurement technology in the measurement of the thickness of a large-scale spaceflight wall plate, achieve the automatic measurement instead of the original ultrasonic manual measurement, and also meet the requirements of high detection precision of the spaceflight wall plate; and the detection accuracy is ensured while the detection efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of wall plate thickness measurement, and in particular relates to an automatic measurement device and method for large-size aerospace wall plate thickness. Background technique [0002] As the main part of the launch vehicle tank, the wall plate should have high rigidity and strength. As the core index of wall panel performance, the thickness of the wall panel requires key monitoring in the design. [0003] At present, manual measurement is used for detection. The detection process requires the cooperation of two inspectors. One of the inspectors collects the wall thickness point by point with an ultrasonic thickness gauge, and the other inspector records the test results in real time on a paper sketch. During the detection process, according to the requirements of the process documents, 100% detection of each grid is required, and the detection density is relatively high. If out-of-tolerance data is found...

AI Technical Summary

Problems solved by technology

However, it is not suitable for direct application to the measurement of large aerospace panels. Due to the large size of the panel, bending deformation is likely to occur in the corner area of ​​some panels, resulting in some deviations in the measurement data and the surface quality of the panel. adverse effect on data reliability

The data collected by the sensor contains occasional out-of-tolerance noise points, lacks a comprehensive and effective exclusion algorithm, and manual exclusion takes a lot of time. In addition, the sensor moves slowly and the amount of data taken is large during measurement, resulting in low data acquisition and data processing efficiency.

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