360-degree detection device and method for roller appearance defects

Abstract

A 360-degree detection device for visual defects of a roller. The detection device comprises a material conveying device and an imaging unit that are controlled by an industrial computer (402). The material conveying device is a carrier roller conveying device (1). The imaging unit comprises a circumferential imaging unit (2) and end imaging units (3). The circumferential imaging unit (2) is arranged above the carrier roller conveying device (1), and the end imaging units (3) are respectively arranged at two sides of the carrier roller conveying device (1).

Description

technical field [0001] The invention relates to a 360-degree detection device and a detection method for roller appearance defects, more specifically, to a device for automatically performing 360-degree optical imaging on cylindrical or conical rollers for full-angle appearance detection method. Background technique [0002] The roller in the roller bearing is an important rolling part, and the quality of the roller directly affects the quality and life of the bearing. At present, the following detection methods are mainly used for the detection of rollers: artificial visual inspection, eddy current flaw detection, ultrasonic flaw detection and magnetic particle flaw detection. [0003] In production practice, the above methods are usually combined, and the final inspection uses manual visual inspection to conduct full inspection or random inspection of appearance defects. Due to the applicability and limitations of the above detection methods, manual visual inspection req...

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Problems solved by technology

[0004] For example, a device proposed in the patent "Bearing Rolling Body Detector Based on High-resolution CCD Technology (Application No. 201210372221.2)" uses a camera test method in six directions: up, down, front, back, left, and right , although this method can detect more faces, but because the cameras are fixed, the shooting time of the six cameras is only the moment when the bearing rolls past the six cameras. Defects make the detection value not very accurate. Since a pallet is required to support the workpiece at any time, there must be a surface that cannot be fully recorded during detection.

And the detection process is too complicated, it needs to be locked, and then transported to the corresponding detection box for the photo process, etc., which seriously affects the detection work efficiency, especially in today's transition from extensive economy to intensive economy. Among them, this low-efficiency production equipment will greatly restrict the production labor force, make the production cost of the product too high, and seriously waste the production resources of the society

[0005] Another example is another detection method proposed in the patent "A Tapered Roller Surface Defect Detection System (Application No. 201310147390.0)", which cannot achieve accurate and reliable 360-degree coverage in the imaging of the outer circle, and is prone to missed detection, and there are also The detection process is cumbersome, resulting in low detection efficiency of defects

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