Batch part automatic detection system and method based on machine vision

Abstract

The invention discloses a batch part automatic detection system and a batch part automatic detection method based on machine vision. The monitoring system comprises a transparent work table, wherein a lower light source is arranged under the transparent work table, an upper light source is arranged above the transparent work table, the upper light source and the lower light source are respectively connected with a light source illumination controller, an industrial camera is arranged above the upper light source, a lens is arranged at the lower side of the industrial camera, and the lens is aligned with the transparent work table through a hollow part of the upper light source. The method comprises the following steps that firstly, geometric quantity detection is carried out on workpeices; the collected image information is used as relevant measurement operation processing information of template part information to be stored into a system database so that the information can be automatically invoked during the subsequent part measurement; the workpiece is placed onto the transparent work table, the lens is aligned with the workpiece, and the similarity to the template part information is judged after the imaging of the workpiece; finally, the automatic detection is carried out, in addition, the qualification performance is judged, and a measurement report form is output. The technologies of machine vision relevant to image processing and databases and the like are utilized, and the fast and automatic detection on continuous large-batch parts is realized through adopting a machine demonstration mode.

Description

technical field [0001] The invention relates to a machine vision-based automatic detection system and method for geometric errors of batch parts, belonging to the field of part size and shape error measurement. Background technique [0002] The improvement of the automation level and processing technology of industrial manufacturing has led to the continuous improvement of the processing speed and precision of the workpiece, and puts forward higher requirements for the detection means, detection speed and precision of the parts. Generally speaking, the measurement items of parts are mainly size, shape (straightness, roundness) and position error (perpendicularity, parallelism, position degree, etc.), and there are often more than one measurement items for a part. Traditional measurement methods ( such as calipers) cannot achieve high efficiency and high precision. In particular, the measurement of parts of the same specification continuously produced on the production line ...

AI Technical Summary

Problems solved by technology

Generally speaking, the measurement items of parts are mainly size, shape (straightness, roundness) and position error (perpendicularity, parallelism, position degree, etc.), and there are often more than one measurement items for a part. Traditional measurement methods ( such as calipers) cannot achieve high efficiency and high precision

In particular, the measurement of parts of the same specification continuously produced on the production line is repeatable, and the traditional measurement method is particularly cumbersome, and the efficiency is extremely low.

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