摘要
榫齿作为航空发动机叶片的重要组件之一,其轮廓尺寸的精密性决定了叶片安装的牢固性以及发动机工作的安全性。然而,当前工业生产中仍然采用传统的人工投影方式作为测量手段,存在测量效率低、精度不稳定等问题。基于机器视觉技术,提出了针对航空发动机叶片榫齿轮廓尺寸的测量方法并开发了相应测量系统。其采用工业相机实时采集榫齿轮廓图像,通过HALCON机器视觉软件对榫齿轮廓图像依次进行预处理、边缘提取、几何量特征提取、几何尺寸变换等操作,以此准确获得榫齿轮廓的尺寸信息,并联合Visual Studio 2019设计了相关信息交互的可视化图形软件。测试结果表明,所开发系统在直线和角度上的平均测量精度误差可分别控制在0.0236 mm和0.2701°以内,且单次测量耗时不超过2 s。相比于传统的人工投影测量方法,显著提升了测量的精度和速度,且降低了人工成本,拥有更友好的现场部署潜力。
The tenon tooth serves as a vital component of aero-engine blades,where its profile dimension precision plays a pivotal role in establishing the firmness of blade installation and ensuring the safety of engine operations.However,the conventional manual projection continues to be employed as the prevailing measurement approach in current industrial production,exhibiting drawbacks including low efficiency and inconsistent accuracy.Drawing upon machine vision technology,this paper puts forth a novel measurement method and designs a corresponding system aimed at measuring the dimension of aero-engine blade tenon tooth profiles.Employ an industrial camera to acquire real-time images of tenon tooth profiles.The obtained images are subsequently processed using machine vision software based on HALCON,which includes sequential operations such as image pre-processing,edge extraction,geometric feature extraction,and geometric dimension transformation.Through these operations,precise dimensional information of the tenon tooth profile is obtained.Additionally,a visual graphical software with interactive information is designed using Visual Studio 2019 to facilitate the analysis and visualization of the obtained data.The experimental results demonstrate that the developed system achieves an average accuracy error of 0.0236 mm and 0.2701°for straight line and angle measurements,respectively,and the time consumption for a single measurement does not exceed 2 s.Compared to the conventional manual projection measurement method,the developed system significantly enhances the accuracy and speed of measurements while reducing manual labor costs.Furthermore,it exhibits the promising potential for userfriendly on-site deployment,offering enhanced convenience in practical applications.
作者
罗佳睿
黄沁元
黄家雄
曹立佳
Luo Jiarui;Huang Qinyuan;Huang Jiaxiong;Cao Lijia(School of Automation and Information Engineering,Sichuan University of Science and Engineering,Zigong 643000,China;Artificial Intelligence Key Laboratory of Sichuan Province,Zigong 643000,China)
出处
《电子测量技术》
北大核心
2023年第24期139-148,共10页
Electronic Measurement Technology
基金
自贡市工业企业技术创新项目(2021QYCX07)
四川轻化工大学研究生创新基金(Y2022126)项目资助
关键词
叶片榫齿轮廓
机器视觉
HALCON
图像处理
尺寸测量
blade tenon tooth profile
machine vision
HALCON
image processing
dimensional measurement
作者简介
罗佳睿,硕士研究生,主要研究方向为航空精密零部件智能测量。E-mail:321085404329@stu.suse.edu.cn;通信作者:黄沁元,副教授,硕士生导师,主要研究方向为智能信息处理及其无损检测应用。E-mail:qyhuang@suse.edu.cn;黄家雄,硕士研究生,主要研究方向为航空精密零部件智能测量。E-mail:32085404422@stu.suse.edu.cn;曹立佳,副教授,硕士生导师,主要研究方向为航空发动机状态监测。E-mail:caolj@suse.edu.cn