Bearing ring grinding burn detection device and method based on photo-thermal fusion

Through a detection device based on photothermal fusion, laser thermal wave excitation and optical detection modules are used to obtain the thermal distribution and surface feature images of the bearing ring, which solves the problems of inconsistent detection effects and inability to quantify in the existing technology, and realizes accurate judgment of bearing ring burn defects.

CN120847175APending Publication Date: 2025-10-28AVIC HARBIN BEARING CO LTD
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Patent Information

Application Number
CN202511169620.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-20
Publication Date
2025-10-28

AI Technical Summary

Technical Problem

In the existing technology, the detection of bearing ring grinding burns relies on human visual detection, which has the problems of poor consistency in detection results, poor uniformity in detection standards, inability to quantify, and can only detect the target surface, making it difficult to accurately judge the burn defects.

Method used

A detection device based on photothermal fusion is adopted. The thermal excitation module is used to excite the bearing ring with laser thermal wave, and the optical detection module is used to obtain thermal distribution images and surface feature images of the bearing ring. The images are analyzed by the numerical control module, and the image information is acquired simultaneously by visible light camera and infrared light camera to realize the judgment of burn defects.

Benefits of technology

It achieves accurate judgment of bearing ring burn defects, reduces misjudgment, provides quantitative test results, and improves the accuracy and consistency of detection.

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Abstract

The invention discloses a bearing ring grinding burn detection device and method based on photo-thermal fusion, and belongs to the technical field of bearing detection. The problems that the existing bearing ring grinding burn detection work generally depends on human eye detection, the detection effect consistency is poor, the detection standard uniformity is poor, only the target surface can be detected, and the detection result cannot be quantified are solved. The device comprises a test platform, an objective table, a thermal excitation module, an optical detection module and a numerical control module, and the objective table is placed on the test platform and used for bearing a tested bearing ring; the thermal excitation module is arranged above the test platform, directly faces the objective table and is used for performing laser thermal wave excitation on the bearing ring; the optical detection module is installed on the test platform, the numerical control module controls the optical detection module to obtain a heat distribution image and a surface feature image of the surface of the bearing ring, and analysis is carried out based on data obtained by the optical detection module so as to judge whether the bearing ring has burn defects or not. The device is used for detecting the surface defects of the bearing ring.
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