Device and method for detecting surface defects of perforated plate workpiece

A technology for detecting workpieces with holes and defects, applied in the field of visual inspection

Pending Publication Date: 2017-02-22
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Aiming at the above prior art, the present invention provides a device and method for detecting surface defects of plate-shaped workpie...

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  • Device and method for detecting surface defects of perforated plate workpiece
  • Device and method for detecting surface defects of perforated plate workpiece
  • Device and method for detecting surface defects of perforated plate workpiece

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Embodiment Construction

[0046] The present invention will be further described in detail below in combination with specific embodiments.

[0047] like figure 1 As shown, a surface defect detection device of a plate-shaped workpiece with holes in the present invention includes a transmission system 1 , a special-shaped lighting source 3 , an industrial CCD image sensor 4 , an image acquisition card 5 and a processor 6 . The conveying system 1 is used to horizontally convey the plate-shaped workpiece 2 with holes to be inspected and conveyed in a straight line at a constant speed; the special-shaped lighting source 3 is used to provide a uniform lighting source, and the special-shaped lighting source 3 can cover the area where the entire plate-like workpiece with holes to be detected is located; the industrial CCD image sensor 4 is used to convert optical signals into electrical signals to complete the image acquisition part; the image acquisition card 5 is used to receive from The electrical signal c...

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Abstract

The invention discloses a device and method for detecting surface defects of a perforated plate workpiece. The system comprises a transfer system, a special-shaped illuminating light source, an industrial charge coupled device (CCD) image sensor, an image acquisition card and a processor. A to-be-detected perforated plate workpiece is horizontally arranged in the transfer system; the special-shaped illuminating light source adopts a shed-shaped structure light source of which the top is arc-shaped and the horizontal section is rectangular, and is arranged at the periphery of a lens of the industrial CCD image sensor; the industrial CCD image sensor comprises a camera main body, a lens and an interface C; the camera main body adopts an industrial CCD camera and is connected with the lens through the interface C; the lens is arranged on the inner side of the special-shaped illuminating light source and is perpendicular to the to-be-detected perforated plate workpiece; the image acquisition card serves as the connector of an image acquisition part and an image processing part; the processor is used for realizing the operation of corresponding codes in a programming environment, calculating and marking the defect positions and intuitively displaying the defect positions. According to the detection device disclosed by the invention, the surface defect positions can be accurately displayed, and the workpiece defect information is acquired instead of human eyes, therefore, the detection accuracy is high.

Description

technical field [0001] The invention relates to a surface defect detection device and method of a plate-shaped workpiece with holes, belonging to the field of visual detection. Background technique [0002] Plate-shaped workpieces with holes have been widely used in machine tool processing, medical equipment manufacturing, and vehicle installations in recent years. At present, most manufacturers still use manual methods to find surface defects of plate-shaped workpieces with holes, which is not only harmful to human eyes, but also has low efficiency and high cost. It cannot accurately find the specific position of surface defects on the workpiece, and it is easy to cause visual errors This leads to a decline in the quality of the workpiece, missed inspections, and false inspections, which greatly reduces product prices and market competitiveness. [0003] There have been manufacturers who have adopted laser scanning detection through technical improvement, and irradiated th...

Claims

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Application Information

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IPC IPC(8): G01N21/89
CPCG01N21/8851G01N21/89G01N2021/8887
Inventor 范剑英赵首博赵羽晴
Owner HARBIN UNIV OF SCI & TECH
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