A novel method for early formal developments using computer aided design and rapid prototyping technology

Qin, Sheng-feng, Wright, David and Prieto, Pablo (2003) A novel method for early formal developments using computer aided design and rapid prototyping technology. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 217 (5). pp. 695-698. ISSN 0954-4054

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Abstract

The paper describes a novel method for updating computer aided design (CAD) models with information taken from physical models in the early stages of design. The new approach is an image mapping based method in which an initial CAD model is transferred to a soft rapid prototype model (RPM) made by a three-dimensional printer and sculpted in order to carry out formal developments. The RPM has a built-in contrasting three-dimensional grid composed of parallel orthogonal planes, and the initial CAD model is represented by cross-section curves corresponding to the RPM grid. The initial CAD geometry is then updated from images of the developed RPM by matching the differences between the initial CAD model and the modified RPM, making use of identical perspective transformations and viewpoints for the initial CAD model and an RPM image. Examples studied varied from a small depression on a cube face to general freeform surfaces. Compared with typical reverse engineering (RE) processes, the present approach is simpler and more direct. It is not necessary to use three-dimensional scanning or coordinate measuring devices for updating existing initial CAD models with data obtained from physical models.

Item Type:	Article
Uncontrolled Keywords:	computer aided conceptual design, reverse engineering (RE), updating modelling, rapid prototyping (RP)
Subjects:	G900 Others in Mathematical and Computing Sciences W200 Design studies
Department:	Faculties > Arts, Design and Social Sciences > Design
Depositing User:	Paul Burns
Date Deposited:	20 Mar 2014 09:38
Last Modified:	12 Oct 2019 19:34
URI:	http://nrl.northumbria.ac.uk/id/eprint/15892

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