Bearing roller pin size detection system and method based on machine vision

A technology of machine vision and size detection, applied in sorting and other directions, can solve the problems of slow scanning speed, high price, unsuitable for large-scale applications, etc., and achieve good robustness

Active Publication Date: 2020-03-31
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, 3D scanning equipment has high precision, and most high-precision scanning equipment is expensive, and the

Method used

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  • Bearing roller pin size detection system and method based on machine vision
  • Bearing roller pin size detection system and method based on machine vision
  • Bearing roller pin size detection system and method based on machine vision

Examples

Experimental program
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Effect test

Embodiment 1

[0112] A bearing needle roller size detection system based on machine vision, including a steel structure support for supporting, a transmission mechanism is provided on the steel structure support, the transmission mechanism includes a drive motor fixed on the steel structure support, the drive motor The output shaft is connected with a motor controller, the motor controller controls the output speed, and is coaxially connected with the transmission wheel with the transmission structure. After the transmission wheel is driven, the conveyor belt tensioned on the two transmission wheels can be driven.

[0113] In order to accommodate workpieces to be inspected, grooves for accommodating workpieces to be inspected, such as needle rollers, are provided on the conveyor belt. In this embodiment, the conveyor belt is made of transparent material.

[0114] There is a sensor above the conveyor belt, which can use sound-activated sensor, temperature sensor, sunlight sensor, and other s...

Embodiment 2

[0120] A method for detecting the size of bearing needle rollers based on machine vision, comprising the following steps:

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Abstract

The invention discloses a bearing roller pin size detection system and method based on machine vision. A single low-cost 2D camera is used for collecting images. An industrial camera is used to acquire the images. The acquired images are stored in an industrial personal computer. The industrial personal computer processes the images. Background interference is removed from the processed images byusing horizontal and vertical projection methods, angle correction is performed on an extracted ROI area. A ROI image is converted into a binary image by using a threshold segmentation method, and filling is performed to ensure that an internal color of a contour of a roller pin is white. Contour extraction is performed on the processed image. A detection size of the roller pin is calculated according to a proportional relation between a visual field range of the camera and an image pixel, the roller pin with a qualified size arrives at a storage box along with a transmission belt, and for theroller pin with a unqualified size, an elimination signal is sent to PLC by the industrial personal computer, and an elimination mechanism is controlled to eliminate the roller pin through the PLC. The roller pins moving on an assembly line are detected and removed in real time.

Description

technical field [0001] The invention relates to the field of machine vision measurement, in particular to a machine vision-based bearing needle roller size detection system and method. Background technique [0002] Bearings are a very important part in the machinery industry and are widely used. Thin and long needle rollers are used inside. The needle rollers have a compact structure in the radial direction and are suitable for installation on support parts with limited radial dimensions. They need to have high load bearing capacity. The manufacturing accuracy of the needle rollers directly affects the quality of the bearing. Bad. Therefore, in the bearing quality inspection process, the size of the needle roller is a very important inspection index. If needle rollers with serious defects are mixed in, it will have an impact on the service life of the bearing if it is light, and it will bring negative economic effects and losses to the manufacturer, and it will also damage...

Claims

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Application Information

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IPC IPC(8): B07C5/10B07C5/12
CPCB07C5/10B07C5/12
Inventor 李岳阳王续澎罗海驰樊启高朱一昕
Owner JIANGNAN UNIV
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