Reverse Engineering Physical Models Employing Wrap-Around B-Spline Surfaces and Quadrics

Reverse engineering involves digitizing a three-dimensional model or part, by means of a tactile or non-contact optical sensor, converting the data to a CAD (computer aided design) database description and manufacturing by CNC (computer numerical controlled) machines. This paper demonstrates an effe...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Part B: Journal of Engineering Manufacture, 1996-01, Vol.210 (2), p.147-157
Main Authors: Weir, D J, Milroy, M J, Bradley, C, Vickers, G W
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Mechanical engineering. Machine design
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Summary:Reverse engineering involves digitizing a three-dimensional model or part, by means of a tactile or non-contact optical sensor, converting the data to a CAD (computer aided design) database description and manufacturing by CNC (computer numerical controlled) machines. This paper demonstrates an effective approach to the reverse engineering of physical models by employing a three-dimensional laser scanning system in conjunction with surface-fitting software developed by the authors. Accurate surface data are collected by the laser scanner and then input to the surface-fitting software. Surface entities such as B-spline and quadric functions are employed to build the CAD model. The CAD model is compatible with popular design and manufacturing software packages. A telephone receiver is used to illustrate the efficiency of the process.
ISSN:0954-4054
2041-2975
DOI:10.1243/PIME_PROC_1996_210_100_02