Aviation part circular hole and end face cooperative detection method, device, equipment and medium

By employing a dual-thread parallel computing architecture and a vector projection method for non-contact inspection, the efficiency and accuracy issues of collaborative inspection of circular holes and end faces of aerospace components in traditional inspection technologies have been resolved. This method achieves non-destructive, accurate, and efficient micron-level inspection, which is suitable for online inspection on aerospace production lines.

CN122170764AActive Publication Date: 2026-06-09CHENGDU AERONAUTIC POLYTECHNIC
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Patent Information

Application Number
CN202610652841.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-13
Publication Date
2026-06-09
Estimated Expiration
2046-05-13

AI Technical Summary

Technical Problem

Traditional testing technologies cannot achieve non-destructive, accurate, and efficient testing of circular holes and end faces of aerospace components. They are particularly inefficient when micron-level precision is required, and cannot be adapted to online testing on aerospace production lines.

Method used

A non-contact detection method based on a dual-thread parallel computing architecture is adopted. The linear least squares method and the 3σ criterion are used to fit the circular hole, the minimum eigenvalue method of the covariance matrix is ​​used to extract the end face normal vector, and the vector projection method is combined to eliminate the normal error, so as to realize the concentricity assessment of nested circular holes.

Benefits of technology

It achieves non-destructive, accurate, and efficient collaborative inspection of circular holes and end faces of aerospace components, improving inspection efficiency, robustness of circular hole fitting, and stability of end face fitting, eliminating the influence of normal error, and meeting the requirements of micron-level accuracy and online production line inspection.

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Abstract

The invention discloses an aviation part round hole and end face cooperative detection method, device and equipment and a medium, and relates to the field of aviation part detection. The method comprises the following steps: performing outlier elimination on surface three-dimensional point cloud data of a target aviation part by using a 3 sigma criterion to obtain a round hole effective point set and an end face effective point set; based on a double-thread parallel computing architecture, adopting a first thread to carry out iterative optimization on the circular hole effective point set on the basis of a linear least square method and a 3 sigma criterion to obtain a circular hole fitting result, and adopting a second thread to extract an end face plane normal vector on the basis of the end face effective point set and a covariance matrix minimum eigenvalue method to obtain an end face fitting result; and based on a fitting result, a vector projection method is adopted to eliminate a normal error component in the three-dimensional circle center vector, so that the projection circle center distance and eccentricity of the nested circular hole in the end face plane are calculated, and the concentricity of the nested circular hole is evaluated. According to the invention, cooperative detection of the round hole and the end face of the aviation part can be accurately and efficiently realized without damage.
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