Rapid Prototyping has been a well-established keyword in the field of design and production for some years. However, whilst this term was previously used first and foremost when referring to stereolithography or associated technology, these days it tends to refer to the entire process from conception to finished product or even to the finished model. Many 'fast' production methods, such as the above-mentioned stereolithography or high-speed milling, require a virtual description of the part to be produced, a 3D CAD surface or solid model. Unfortunately, creating this 3D CAD model is in many cases neither simple nor quick. The simplest method is to design 3D CAD models consisting primarily of ruled solids, although this is often still a time-consuming method. It is possible to describe these clearly with dimensioned drawings or diagrams. Much more complex is the design of advanced surfaces, i. e. surfaces with no measurable elements such as circles or lines. Although CAD systems are increasingly appearing in design offices, many model designs are still being created manually. Transfering these models into CAD systems precisely, simply and quickly is a technique which hase become known as surface reproduction. It may be outlined in a few steps: Digitisation of the model, i. e. measuring as many 3D coordination points of the model as possible; structuring the 3D coordinate points (point group) in individual areas; approximating the advanced surfaces through the points of the individual areas; monitoring and amending as required.
Optical digitization and surface reproduction
Optische Digitalisierung und Oberflächennachbildung
1995
4 Seiten
Conference paper
English
Optical Digitization and Surface Reproduction
British Library Conference Proceedings | 1995
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