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Butterfly spring three-dimensional size automatic measuring system and measuring method based on machine vision

A butterfly spring, automatic measurement technology, applied in measuring devices, instruments, optical devices, etc., can solve the problems of complex industrial camera installation and detection devices, inability to apply three-dimensional measurement of butterfly springs, and easy fatigue of the naked eye, etc. The effect of detection efficiency and accuracy, flexible measurement and convenient operation

Active Publication Date: 2019-03-26
扬州核威碟形弹簧制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing detection technology is to measure with through gauge, stop gauge and plug gauge. Each butterfly spring needs to be measured 6 times to measure all dimensions and judge whether it is qualified. The workload is heavy, the speed is slow, and the naked eye is prone to fatigue. Parts are easily damaged during manual inspection
[0004] The existing part size detection based on machine vision is not applied to the size detection of Belleville springs. The existing part detection based on machine vision can only obtain two-dimensional size, but only convert the three-dimensional size into a two-dimensional plane for measurement. Industrial cameras The installation and detection devices are relatively complicated
The detected part has a relatively regular shape, which cannot be applied to the three-dimensional measurement of the Belleville spring

Method used

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  • Butterfly spring three-dimensional size automatic measuring system and measuring method based on machine vision
  • Butterfly spring three-dimensional size automatic measuring system and measuring method based on machine vision
  • Butterfly spring three-dimensional size automatic measuring system and measuring method based on machine vision

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Experimental program
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Effect test

Embodiment 1

[0042] A machine vision-based automatic three-dimensional size measurement system for Belleville springs, such as figure 1 As shown, it includes a hardware part, the hardware part includes a detection device, and the detection device includes a base 1-2, and the upper side of the base 1-2 is symmetrically fixed with two vertical poles through the corner connector 1-1 1-14, a horizontal bar 1-15 is fixedly installed between the two vertical poles 1-14 close to their upper ends, and the middle parts of the two vertical poles 1-14 are respectively fixedly installed with a camera through the connecting seat 1-4 CL1-9 and camera CR1-3, the middle bottom of the crossbar 1-15 is fixedly installed with a camera CT1-6 through the fitting seat 1-7, and both the camera CL1-9 and the camera CR1-3 are installed There is an ordinary optical lens 1-5, a telecentric optical lens 1-8 is installed on the camera CT1-6, a backlight source 1-13 is installed on the bottom of the base 1-2, and the u...

Embodiment 2

[0057] According to the three-dimensional automatic measurement system of butterfly spring based on machine vision built according to the embodiment 1, the software of the three-dimensional automatic measurement system of butterfly spring based on machine vision is run on the PC, and the camera CL1- 9. CR1-3, CT1-6, carry out system calibration, the calibration parameters are stored in the PC, place any butterfly spring on the frosted glass to be tested, and select the "Start Test" button in the functional area 2-1 to enter the test process , the measurement results are displayed in the test result display area 2-5 in real time, and the test personnel sort out the qualified butterfly springs by observing the test results or the information in the prompt bar.

Embodiment 3

[0059] According to the machine vision-based automatic three-dimensional dimension measurement method of the Belleville spring of embodiment 2, the method is: the camera works at a certain frame rate, and each frame image collected by the camera CT is compared with the previous frame image, and the grayscale is used The information represents the image attributes of each frame, and the gray information of the front and rear images automatically enters the detection program within a certain threshold range.

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Abstract

The invention discloses a butterfly spring three-dimensional size automatic measuring system based on machine vision. The system comprises a hardware part which comprises a detecting device, the detecting device comprises a base, one side of the upper part of the base is symmetrically and fixedly equipped with two vertical rods through corner connecting pieces, and a cross rod is installed betweenthe two vertical rods and is close to the upper ends of the vertical rods. In on-site measurement, a butterfly spring is placed in an area to be measured, the butterfly spring can be replaced at anytime when multiple butterfly springs are detected, the automatic judgment and detection is achieved, the operation is convenient and simple, and the detection efficiency is high. The invention also discloses the butterfly spring three-dimensional size automatic measuring system and measuring method based on machine vision, the method comprises three steps, the measuring method of machine vision isused, and the damage to the butterfly spring during manual measurement is reduced through a non-contact mode, especially a butterfly spring with a smaller specification.

Description

technical field [0001] The invention relates to the technical field of optical three-dimensional dimension detection, more specifically, it relates to a machine vision-based automatic three-dimensional dimension measurement system of a butterfly spring and a measurement method thereof. Background technique [0002] Part size detection has high repeatability and high intelligence, and is affected by random errors in part processing. Manual judgment must be added to part size detection, but manual detection has a large workload, slow speed, easy fatigue, poor stability, and high cost. Complex, small, mass-produced parts require heavy workload and difficulty in manual inspection. [0003] Belleville spring is a mechanical part widely used in aerospace, mechanical equipment industry and other fields. Because the butterfly spring has a dish shape, it is difficult to measure its size. The existing detection technology is to measure with through gauge, stop gauge and plug gauge. E...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08G01B11/12G01B11/06
CPCG01B11/0608G01B11/08G01B11/12
Inventor 姚海滨姜涛崔海华卞新光程筱胜
Owner 扬州核威碟形弹簧制造有限公司
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