31 January 2013 Collaborated measurement of three-dimensional position and orientation errors of assembled miniature devices with two vision systems
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Proceedings Volume 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation; 87594C (2013) https://doi.org/10.1117/12.2014741
Event: International Symposium on Precision Engineering Measurement and Instrumentation 2012, 2012, Chengdu, China
Abstract
In assembly of miniature devices, the position and orientation of the parts to be assembled should be guaranteed during or after assembly. In some cases, the relative position or orientation errors among the parts can not be measured from only one direction using visual method, because of visual occlusion or for the features of parts located in a three-dimensional way. An automatic assembly system for precise miniature devices is introduced. In the modular assembly system, two machine vision systems were employed for measurement of the three-dimensionally distributed assembly errors. High resolution CCD cameras and high position repeatability precision stages were integrated to realize high precision measurement in large work space. The two cameras worked in collaboration in measurement procedure to eliminate the influence of movement errors of the rotational or translational stages. A set of templates were designed for calibration of the vision systems and evaluation of the system’s measurement accuracy.
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Xiaodong Wang, Wei Zhang, Yi Luo, Weimin Yang, Liang Chen, "Collaborated measurement of three-dimensional position and orientation errors of assembled miniature devices with two vision systems", Proc. SPIE 8759, Eighth International Symposium on Precision Engineering Measurement and Instrumentation, 87594C (31 January 2013); doi: 10.1117/12.2014741; https://doi.org/10.1117/12.2014741
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