Automatic detection and laser additive repair method for surface defects of metal parts
By acquiring point clouds using a scanner and automatically detecting defects on the surface of metal parts using algorithms, a laser scanning path is generated for cleaning and additive repair. This solves the problems of cumbersome repair processes and poor quality in existing technologies, and achieves efficient and high-quality defect repair.
CN119794383BActive Publication Date: 2025-11-04CENT SOUTH UNIV +1
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Patent Information
- Application Number
- CN202510026247.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2045-01-08
AI Technical Summary
Technical Problem
The existing technology for repairing surface defects of metal parts is cumbersome and inefficient, and the rust and oil stains in the defect area affect the repair quality.
Method used
Point clouds of metal parts are acquired by a scanner. KNN and DBSCAN algorithms are used to automatically detect dents, spalling, and cracks. Laser scanning paths are generated to perform laser cleaning and additive repair on the defective areas, removing rust and oil.
Benefits of technology
It enables efficient and automated detection and high-quality repair of surface defects in metal parts, improving repair efficiency and quality.
✦ Generated by Eureka AI based on patent content.
Abstract
The application belongs to the technical field of laser additive repair, and discloses a kind of metal part surface defect automatic detection and laser additive repair method, comprising the following steps: (1) using scanner scans metal part surface, the point cloud obtained is preprocessed;(2) by analyzing the normal vector of each point in point cloud, the recess and peeling off block defect of metal part surface is automatically detected, and the crack defect of metal part surface is automatically detected by analyzing point cloud density;(3) the point cloud corresponding to recess or peeling off block defect is layered, and laser scanning path is generated in recess or peeling off block defect area, laser cleaning and laser additive repair are carried out on defect;(4) for the point cloud corresponding to crack defect, laser scanning path is generated in crack defect area, and laser cleaning and laser additive repair are carried out on crack defect.The application can realize efficient detection and repair of metal part surface defects, and meet the repair quality requirements.
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