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Drilling defect detection method and drilling defect detection equipment based on image detection

A defect detection and image detection technology, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as the inability to effectively detect the depth of secondary drilling, and achieve the effect of accurate defect detection results.

Active Publication Date: 2021-04-06
深圳宜美智科技股份有限公司
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Problems solved by technology

[0005] The present invention provides a drilling defect detection method and defect detection equipment based on image detection, which can realize effective drilling defect detection for countersink holes of PCB boards; to solve the problem that existing drilling defect detection methods and defect detection equipment cannot Technical Problems of Effectively Detecting the Depth of Secondary Drilling

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  • Drilling defect detection method and drilling defect detection equipment based on image detection
  • Drilling defect detection method and drilling defect detection equipment based on image detection
  • Drilling defect detection method and drilling defect detection equipment based on image detection

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Embodiment Construction

[0086] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0087] The ordinal words such as "first", "second", and "third" in the terminology of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying relative importance, and not as restrictions on the sequence;

[0088] In addition, words such as "connection" and "arrangement" in the terms of the present invention should be understood in a broad sense, which can be that one component is directly connected or directly arranged on...

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Abstract

The present invention provides a method for detecting a hole defect based on image detection. The detection method includes: using a first camera to shoot a PCB hole to obtain an orthographic projection image of the PCB hole; using a second camera to shoot the PCB hole, To obtain the side projection image of the PCB drill hole; according to the image smoothness of the front projection top hole image and the side projection top hole image, determine the top hole surface defect of the PCB drill hole; according to the front projection bottom hole image and the side projection bottom hole image Image smoothness, determine the bottom hole surface defect of PCB drilling; determine the bottom hole depth defect of PCB drilling according to the image offset of the front projection bottom hole image and the side projection bottom hole image. The invention also provides a drilling defect detection device to realize the effective detection of drilling defects on the counterbore of the PCB board.

Description

technical field [0001] The invention relates to the field of image detection, in particular to a drilling defect detection method and defect detection equipment based on image detection. Background technique [0002] With the development of electronic technology, especially the in-depth development of 5G technology, the frequency of data transmission is getting higher and higher, and more and more new processes have been introduced in the production of circuit boards. Among them, the back drilling process is one of the methods of circuit board production. important craft. [0003] Such as figure 1 As shown, the back-drilled hole is a counterbore 10 with different depths and different apertures. The depth of the secondary drilled hole cannot be detected by the existing AOI (Automated Optical Inspection) equipment, so that the The countersink 10 is detected for drilling defects. [0004] Therefore, it is necessary to provide an image detection-based drilling defect detectio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/01G01N21/954
CPCG01N21/01G01N21/954
Inventor 陈胜鹏
Owner 深圳宜美智科技股份有限公司
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