Workpiece quality detection method by multiple cameras

Abstract

The invention provides a workpiece quality detection method for multiple cameras. According to the method, the applied detecting mechanisms include a plurality of cameras, detecting and control systems, workpieces and working platforms; and the method is characterized by comprising the following steps: installing cameras in the detecting mechanisms, transferring the workpieces into shooting view areas of the cameras in the detecting mechanisms; acquiring the images of the workpieces from the cameras in the detecting mechanism; transmitting the images of the workpieces into the detecting and control systems through the cameras in the detecting mechanism; and processing the received images of the workpieces through the detecting and control systems in the detecting mechanism. The workpiece quality detecting method has the advantages that the multi-angle detecting and multi-view detecting in the workpiece quality detecting are achieved; the method is not only applied to detecting the quality of a common workpiece, but also meets the requirements on quality detecting of certain workpieces made of special materials and having relatively high overall dimension, thereby improving the working efficiency and the detecting precision on the workpiece quality detecting, and achieving wide application.

Description

technical field [0001] The invention relates to a workpiece quality detection method, in particular to a non-contact multi-camera workpiece quality detection method. Background technique [0002] With the advancement of science and technology and the development of society, people put forward higher requirements for the quality and testing methods of mechanical and electronic products. The quality of workpieces includes dimensions, shapes, materials and surface conditions. The detection tools in the traditional detection method of workpiece size mainly include ruler, vernier caliper and feeler gauge, etc., but in some specific occasions, such as the detection of small size, surface contour and hole distance, etc., it has become a difficult problem that cannot be realized by traditional detection methods. It is difficult to resolve the contradiction between precision and speed. Therefore, it is of great significance to explore new detection methods. [0003] With the develo...

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Problems solved by technology

[0004] However, the image probe used in the general image measurement method is a fixed single lens, and there are the following problems in the detection: for workpieces with large external dimensions, when the external dimensions exceed the shooting range of the lens, it is necessary to move the workpiece and take multiple shots to complete the workpiece. The collection of complete images is inefficient; for workpieces with special materials, the surface flaws must be observed from multiple angles, such as backlight modules, foreign objects and dander on the surface are relatively clear when viewed vertically at 90 degrees, while Scratches and dirt can only be clearly displayed when observed at about 30 degrees. It can be seen that for the detection of workpiece surface defects of some special materials, it cannot be detected when using a fixed single lens, and the detection accuracy is poor.

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