Pillar outer surface defect inspection system

Abstract

The invention discloses an outer surface defect inspection system for a columnar object. The outer surface inspection system is characterized by comprising an illuminating device arranged at the periphery of the columnar object in a sleeving mode, a clamping device which is arranged on the two sides of the illuminating device and used for clamping the columnar object, a camera set which are arranged at the periphery of the illuminating device in a surrounding mode and used for shooting and detecting the surface of the columnar object simultaneously and a vision processor used for judging whether the columnar object is a qualified product or not according to the gray difference shown by surface defects. According to the outer surface defect inspection system for the columnar object, a cylindrical inner surface illuminant serves as a light source to illuminate the columnar object from all the angles; the clamping device performs quick clamping to adapt to the columnar objects of different diameters to enable the axis position of the columnar object to be invariable; multiple industrial cameras are adopted to be arranged at the periphery of the inspected columnar object in a surrounding mode to shoot and detect the surface of the columnar object simultaneously, 360-degree surrounding is achieved, no dead angle exists, quick inspection is achieved, and the advantages of being simple in structure, high in practicability, convenient and quick to operate, high in accuracy and the like are achieved.

Description

technical field [0001] The invention relates to the field of defect inspection on the outer surface of pillars, in particular to a defect inspection system on the outer surface of pillars. Background technique [0002] At present, when using machine vision technology to quickly inspect the defects on the outer surface of pillars with various diameters, the pillars need to be clamped and transported, and the conveying device is required to be able to quickly adapt to pillars with different diameters The position of the object axis remains unchanged to ensure that multiple cameras around the column have the same object distance. At the same time, it is also necessary to illuminate the columnar outer surface of the column, and it is necessary to ensure the uniformity of illumination as much as possible. [0003] The traditional rapid inspection method of using V-shaped or U-shaped wheels for clamping and conveying cannot guarantee that the axis of pillars with different diamet...

AI Technical Summary

Problems solved by technology

[0003] The traditional quick inspection method of using V-shaped or U-shaped wheels for clamping and conveying cannot guarantee that the axis of pillars with different diameters will not change, which will affect the accuracy of inspection results

However, the traditional machine vision light source, whether it is a plane light source or a ring light source, cannot guarantee uniform illumination of the column, which will affect the accuracy of the inspection results.

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