Thin-walled cylinder size precision analysis and AR visualization method based on point cloud

Abstract

The invention discloses a thin-walled cylinder size precision analysis and AR visualization method based on a point cloud, and the method comprises the steps: carrying out the differential division of a thin-walled cylinder point cloud into slices, carrying out the fitting of an axis through the central point of each slice, calculating an out-of-tolerance part, removing the out-of-tolerance part and a neighborhood point cloud, continuing the differential-slicing-fitting-point removal, and carrying out the iterative circulation, therefore, the size out-of-tolerance part of the thin-walled cylinder is accurately calculated, the mark point cloud is segmented, the mark pose is solved and used for virtual-real fusion registration of the point cloud, and the size precision analysis result is superposed on the entity of the thin-walled cylinder and used for guiding shape correction. According to the method, automatic analysis of the thin-walled cylinder size error can be realized, the influence of an out-of-tolerance part can be eliminated in a data ratio, the size error analysis precision is improved, an analysis result can be directly overlapped and displayed on the surface of a thin-walled cylinder part, and the problem that error information display is not visual is solved.

Description

technical field [0001] The invention belongs to the technical field of component detection, and in particular relates to a method for dimensional accuracy analysis and AR visualization of a thin-walled cylinder. Background technique [0002] Thin-walled cylindrical parts are widely used in the aerospace industry because of their high specific strength, which can greatly reduce the structural weight. However, in terms of processing technology, thin-walled cylindrical parts have poor rigidity, are prone to deformation during processing, and the quality of one-time processing is not high. Most of the existing thin-walled cylindrical parts are processed using the processing process of processing-measurement-modification-measurement. The measurement and modification process is repeated, and the measurement process has a great impact on the processing efficiency of the parts. [0003] At present, the measurement of thin-walled cylindrical parts in domestic factories is still main...

AI Technical Summary

Problems solved by technology

The invention can realize the automatic analysis of the dimensional error of the thin-walled cylinder, can eliminate the influence of the out-of-tolerance part in the data ratio, improve the accuracy of the dimensional error analysis, and can directly superimpose and display the analysis results on the surface of the thin-walled cylindrical part, solving the problem that the display of the error information is not intuitive

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