Method for detecting quality of check ring based on machine vision

Abstract

The invention discloses a method for detecting the quality of a check ring based on machine vision. The method comprises the steps of S1, collecting an image of the check ring, and converting the image into a binary image; S2, performing edge detection on the binary image of the check ring; and S3, calculating the curvature of edge points along the edge. According to the scheme of the invention, automatic detection and recognition for the check ring are achieved through a series of operation processes such as image acquisition and image processing and recognition, and the process does not needmanual participation. Meanwhile, an edge curve of the image of the check ring is found out through curve fitting, and the curvature of all edge points of the check ring is calculated according to theedge curve, so that omnidirectional check ring curvature detection is achieved, and the curvature of the check ring in all directions is ensured to meet quality detection requirements.

Description

technical field [0001] The invention belongs to the field of machine vision recognition, and relates to a machine vision-based quality detection method for retaining rings. Background technique [0002] The retaining ring is divided into the retaining ring for the hole and the retaining ring for the shaft. The limit function can prevent the axial movement of other parts. It is a mechanical part with a ring opening. Since the retaining ring is sheared and pressed by a helical structure, although the thickness error of the retaining ring is small, there is a certain curvature on the surface of the retaining ring, resulting in different outer diameters in different directions. When the diameter exceeds a certain error, the product It is an unqualified product, so it is necessary to test the curvature of the retaining ring to ensure the fit between the retaining ring and the shaft of the part during use. [0003] The commonly used quality inspection method for retaining rings i...

AI Technical Summary

Problems solved by technology

[0003] The commonly used quality inspection method for retaining rings is manual measurement, which uses a precision ruler to measure the retaining ring in multiple directions. However, there are errors in manual measurement, and it is impossible to ensure that the diameters in all directions are measured.

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