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《Journal of Chongqing University of Technology(Natural Science)》 2013-04
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Digital Springback Measurement for Stamping Parts Based on Binocular Stereo Vision Measuring Technique

LU Ping,LIU Bin,HUANG Chang-biao,LIN Jun-yi,XU Zheng-xing,LIU Xiao-hui(College of Mechanical Engineering and Automation,Huaqiao University,Xiamen 361021,China)  
To make up the deficiencies such as low accuracy,high cost and long cycle in measuring the springback of stamping parts by using traditional tools,a digital method for measuring the springback is proposed in the paper.A binocular stereo vision measuring equipment based on the grating projection method is devised and 3D point cloud data of actual stamping parts is acquired by applying this equipment.The point cloud data and CAD design model are matched and aligned through three steps method.The value of the springback is obtained by calculating the normal deviation distance of point cloud relative to the design model in the best matching position.Practical applications show that the measuring equipment and the digital springback measurement system developed have characteristic of strong generality,and they are able to measure the springback of complex and large stamping parts fast,flexibly and accurately.
【Fund】: 福建省自然科学基金资助项目(2010J05116);; 厦门科技计划项目(3502Z20113020);; 中央高校基本科研业务费资助项目(JB-ZR1101)
【CateGory Index】: TG386;TP391.41
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