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Vision-based bar material defect detection device and method

A technology of defect detection and bar material, which is applied in the field of defect detection, can solve the problems of low detection efficiency and achieve the effect of uniform illumination, strong stability and favorable shooting

Inactive Publication Date: 2020-02-21
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problem of low detection efficiency of existing bar defect detection devices, the present invention provides a vision-based bar defect detection device and method

Method used

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  • Vision-based bar material defect detection device and method
  • Vision-based bar material defect detection device and method
  • Vision-based bar material defect detection device and method

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Embodiment approach

[0069] As an implementation manner, the detection mechanism 12 further includes at least one diameter imaging device 123 and at least one parallel backlight 124; the parallel backlight 124 is arranged opposite to the diameter imaging device 123 on both sides of the transmission line.

[0070] Specifically, the above-mentioned diameter shooting device 123 can be composed of an industrial camera and a telecentric lens. Compared with ordinary lenses, the use of a telecentric lens can reduce the degree of distortion of imaging, improve image resolution, reduce the degree of distortion of imaging, and reduce perspective errors. Greatly improved the accuracy of diameter measurement.

[0071] It can be understood that the diameter photographing device 123 is used to photograph the bar 14 to measure the diameter of the bar, which can measure the diameter of the bar 14 without affecting the defect detection and improve the detection efficiency; the parallel backlight sources 124 have th...

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Abstract

The invention provides a vision-based bar material defect detection device and method. The vision-based bar material defect detection device can be used for performing defect detection on bar materials, and comprises a feeding mechanism, a detecting mechanism and a removing mechanism, wherein the feeding mechanism is divided into a feeding section and a discharging section, the detecting mechanismis arranged at the feeding section, the removing mechanism is arranged at the discharging section, the feeding mechanism comprises at least two transmission wheels, the transmission wheels are sequentially arranged at the feeding section and the discharging section to form a conveying route, the bar materials are conveyed from the feeding section to the discharging section along the conveying route through the transmission wheels, the detecting mechanism performs detect detection on the bar materials while the bar materials are conveyed, and the removing mechanism is used for removing the barmaterials out of the transmission wheels when the bar materials are defective. Automatic feeding and discharging can be achieved, defective product removal automation is achieved, the bar materials are detected while the bar materials are conveyed, so that the detection efficiency is greatly improved.

Description

【Technical field】 [0001] The invention relates to the technical field of defect detection, in particular to a vision-based bar defect detection device and method. 【Background technique】 [0002] With the development of economic construction and the continuous progress of science and technology, the manufacturing industry has developed rapidly. With the industry entering the 4.0 era, intelligent manufacturing has become popular, and the development of intelligent manufacturing is inseparable from high-quality raw materials. Bar stock is one of the raw materials for parts manufacturing. , which occupies a large proportion. During the production process of bar stock, defects such as cracks and scratches will appear more or less on the surface of the product. These defects not only affect the appearance of the product, but also reduce the physical properties of the product. [0003] However, the existing bar defect detection device has insufficient automation and low detection ...

Claims

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Application Information

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IPC IPC(8): B07C5/342
CPCB07C5/3422
Inventor 朱勇建王墨航王驰沈传兴陈岁繁
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY