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Research on Carrying-Saddle Measure System Based on Structured Light 3D Measurement

Author: ZhanChengCheng
Tutor: WangCongJun
School: Huazhong University of Science and Technology
Course: Digitized material forming
Keywords: Bearing saddle Surface structure light measurement Rotary table Demarcate
CLC: TP274
Type: Master's thesis
Year: 2011
Downloads: 14
Quote: 0
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Abstract


Bearing saddle is one of the important parts of the freight trains travel unit installed in a train bogie side frame guide frame and rolling bearings have an important impact on the speed of the train , carrying capacity , and safe driving . Thus the need for the size of the key parts of the bearing saddle regularly detected , to prevent its failure freight traveling . Detection of bearing saddle template manual detection , the low efficiency of this detection method , and labor intensive . In order to explore the new method for detection of bearing saddle of this study and the development of a set of the bearing saddle detection system based on structured light technology . The system uses a structured light technology based on phase measuring profilometry as a measurement terminal . In this paper, the phase measurement phase profilometry system parameter calibration , detailed introduction to the key problem of the reconstruction of three-dimensional data . For the bearing saddle testing requirements , this paper design of the measuring terminals by several sets of structured light measurement system , measuring two angles from the upper and lower bearing saddle ; design a rotary table in order to improve the efficiency in the use of the measurement terminal , in order to achieve different angle measurement data automatically put together ; detection system developed system software to improve the efficiency and the degree of automation of the system detects . This article for the calibration of the rotary table design two methods , using standard ball rotation axis and angle of rotation of the rotary table to do the calibration . Using calibration plate , by the singular value decomposition method , the coordinate transformation matrix . The experimental analysis , the calibration panel high calibration accuracy of the rotation axis , and is applied to the system . The system for the bearing saddle three-dimensional topography data for non- contact measurement , real-time online access to the three-dimensional morphology of the workpiece , and in accordance with the testing requirements of the automatic fitting process measurement data , the wear data of the detection of the critical dimensions of the bearing saddle . The system uses structured light measurement technology , provides a new way for real-time on - line detection of bearing saddle bearing saddle to detect the degree of automation .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system
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