基于便携式粗糙度仪的表面轮廓测量实验平台设计  

Design of an experimental platform for surface contour measurement based on a portable roughness meter

作　　者：叶卉[1] 王泽华 许世炜 姜晨[1] YE Hui;WANG Zehua;XU Shiwei;JIANG Chen(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《实验技术与管理》2024年第7期140-147,共8页Experimental Technology and Management

基　　金：2022年教育部产学合作协同育人项目(220506071125324,220606071203633,220506071113615);2023年上海理工大学教师发展研究项目(CFTD2023ZD06);上海理工大学研究生教学建设项目;上海理工大学本科教学研究与改革重点项目。

摘　　要：该文基于便携式粗糙度仪设计了一种用于采集工件表面轮廓数据的测量实验平台,并同步开发轮廓分析软件。该测量实验平台由三轴移动装置、夹具、轮廓数据采集装置(粗糙度仪)及计算机组成,可采集水平方向上0.3~16.0 mm、垂直方向上–200~200μm复杂表面的轮廓数据,用于微结构或非球面等面型的测量实验。基于MATLAB软件设计模块开发了轮廓数据处理及分析软件,与金相显微镜及泰勒霍普森轮廓仪所测量的轮廓数据结果对比,该测量实验平台的测量误差低于5%,证明该平台及测量方法的可靠性和准确性。[Objective]To ensure precise machining and surface accuracy of complex surfaces,it is crucial to accurately measure and evaluate surface contours.Traditional instruments such as white light interferometers,ultra-depth-of-field microscopes,and surface profilometers are often expensive and bulky,requiring researchers to write custom programs for contour analysis.This paper addresses these issues by designing an experimental platform based on a portable roughness meter for surface profile data acquisition coupled with software to analyze the data.[Methods]The designed experimental platform for surface contour measurement consists of a three-axis moving device,a fixture,a contour data acquisition device(roughness meter)and a computer.To ensure stable data collection,a fixture accommodating workpieces of different shapes and sizes is designed,and a three-axis moving device is built using three sets of linear slide modules to adjust the workpiece and the roughness meter positions during measurement.The collected surface contour data is exported as an Excel file.Using the Gaussian-weighted moving average method and a contour correction model,the software(developed in MATLAB’s App Designer)facilitates data interception,smoothing,correction of surface contour data,and calculations of geometrical parameters like distances between points and coordinates of the highest/lowest points.The accuracy of surface contour data collected,processed,and analyzed by the test platform was verified through comparative experiments.First,the heights of rectangular microstructures measured by the platform were compared with those obtained from a metallurgical microscope.Additionally,the cross-section profiles of polished spots detected on the platform were compared with measurements from a Taylor Hobson profiler in both the x and y directions.Ultimately,the relative errors between the platform's results and those from other instruments were calculated.[Results]The experimental results showed that①when measuring rectangular microstructure

关 键 词：表面轮廓 粗糙度仪 实验装置改进 数据处理分析 

分 类 号：TH711[机械工程—测试计量技术及仪器]