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Image overlaying-based thin sheet part contour automatic detection head and method

An automatic detection and thin-film technology, applied in measuring devices, instruments, optical devices, etc., to achieve the effect of simple path planning algorithm, simple device structure, and easy implementation.

Inactive Publication Date: 2012-09-12
ZHEJIANG UNIV +1
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Problems solved by technology

[0007] In view of the deficiencies of the existing machine vision image detection methods for the outline of sheet parts, the purpose of the present invention is to provide an automatic detection probe and detection method for the outline of sheet parts based on image compounding

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  • Image overlaying-based thin sheet part contour automatic detection head and method
  • Image overlaying-based thin sheet part contour automatic detection head and method
  • Image overlaying-based thin sheet part contour automatic detection head and method

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Embodiment Construction

[0038] The present invention is aimed at profile detection of sheet parts, and the structure of the probe device used and the assembly relationship of the accessories in the probe device are as follows: figure 1 , figure 2 As shown, the specific structure is described as follows:

[0039]CCD camera 1 is installed on the right-angle base 2 sides by screws, and the lens of CCD camera 1 is aligned with the camera observation hole 17 on the bottom surface of the right-angle base 2; 18 is installed in the bearing mounting hole 15 of the right-angle base 2; the lens converter 10 is a disc-shaped gear, and there are three lens mounting holes 14 equicircumferentially distributed on it, and the first lens of the camera is respectively installed on the lens mounting holes 14 13. The second lens 12 and the third lens 11; the motor 8 is installed in the motor mounting hole 16 on the bottom surface of the right angle base 2, the output end of the motor 8 is equipped with a pinion 9, and ...

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Abstract

The invention discloses an image overlaying-based thin sheet part contour automatic detection head and an image overlaying-based thin sheet part contour automatic detection method. A lens switch and a CCD (Charge Coupled Device) camera are arranged on a right-angle base; rotational positioning of the lens switch is realized through a motor; and the right-angle base is arranged on the Z axis of a three-coordinate measuring machine through a connecting block and a magnetic base plate. During measurement, three camera lenses of different magnification factors are arranged on the lens switch; a low power lens is firstly switched to a working position, a panoramic image of a thin sheet part is acquired by the CCD camera, and the part contour is extracted; a secondary measuring path is planned by a path planning module according to an overall contour distribution condition of the part; then a high power lens is switched to the working position, and a contour sub-region of the thin sheet part is accurately measured by the CCD camera according to the secondary measuring path; and finally, the data acquired by secondary measurement is used as a final detection result. The device has a simple structure; and automatic detection of the thin sheet part of a complex shape can be realized.

Description

technical field [0001] The invention relates to a contour detection of a sheet part, in particular to a measuring head and a detection method for automatic detection of the contour of a sheet part based on image compounding. Background technique [0002] Thin sheet parts are widely used in computer hard disks, mechanical precision clocks, precision optoelectronic instruments and other fields. Contour dimension detection is an important means to control the quality of thin-film parts and ensure that thin-film parts can achieve the intended function. At present, there are three main ways to detect the outline size of thin parts: [0003] (1) Manual inspection method with special measuring tools: The measuring personnel use special measuring tools such as rulers and gauges to measure the local dimensions on the sheet parts. [0004] (2) Three-coordinate measuring machine contact detection: Manually control the three-coordinate measuring machine to measure the contour of the s...

Claims

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Application Information

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IPC IPC(8): G01B11/24
Inventor 卢科青王文陆军华韦东波陈子辰
Owner ZHEJIANG UNIV
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