Machine vision-based piston ring contour detection and classification method and device thereof

Abstract

The invention discloses a machine vision-based piston ring contour detection and classification method and a device thereof. The device is characterized by comprising a guiding mechanism, a vision mechanism, a light source mechanism, a blowing mechanism and a shunting mechanism; a piston ring is placed in a detection area; the vision mechanism is arranged at the side part of the piston ring; the light source mechanism is arranged on the opposite side of the vision mechanism and located on a same axle wire with the vision mechanism; the blowing mechanism is arranged at the top of the piston ring detection area; and the shunting mechanism is arranged at an outlet of a contour detection area. According to the machine vision-based piston ring contour detection and classification method and thedevice, the traditional pure manual work is replaced by a full-automatic manner to realize accurate operation of recognizing and classifying contour features of outer rings of piston rings, and the detection of piston rings with various diameters and diameter thicknesses can be flexibly adapted, so that the structure is simple and the operation is easy.

Description

technical field [0001] The invention is a machine vision-based piston ring profile detection, recognition, and classification method and device thereof, and belongs to a brand-new innovative technology of the machine vision-based piston ring profile detection, recognition, and classification method and device thereof. Background technique [0002] In the production process of piston rings, it is necessary to distinguish the positive and negative sides of the compression ring and the scraper ring of the piston ring with the asymmetric barrel surface, the outer conical surface, and the outer circle as a part of the cylinder, and to detect the scraping edge of the oil ring, for example Compression rings and scraper rings are divided into positive and negative sides, oil rings are divided into qualified and unqualified, etc. The current operation is to detect which type the piston ring belongs to above with the naked eye, and manually classify it, but the outer circle of the pist...

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Problems solved by technology

[0002] In the production process of piston rings, it is necessary to distinguish the positive and negative sides of the compression ring and the scraper ring of the piston ring with the asymmetric barrel surface, the outer conical surface, and the outer circle as a part of the cylinder, and to detect the scraping edge of the oil ring, for example Compression rings and scraper rings are divided into positive and negative sides, oil rings are divided into qualified and unqualified, etc. The current operation is to detect which type the piston ring belongs to above with the naked eye, and manually classify it, but the outer circle of the piston ring is different. The radial size range is very narrow, ranging from a few tenths of a millimeter to two millimeters, and the current output of piston ring manufacturers exceeds 10,000 pieces a day. Such a large workload makes it easy to misjudgment and misclassification in purely manual operations. , which affects the correctness of the operation of the next process of the piston ring

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