By Hans Grabowski, Reiner Anderl, Michael J. Pratt
Reiner Anderl The complex Modelling a part of the CAD*I venture geared toward the improvement of a brand new new release of modelling options as a easy performance of destiny CAD/CAM structures. The technique and ideas for complex modelling ideas, their availability within the conversation interface of a CAD/CAM method and their effect on inner interfaces within the software program structure of a CAD/CAM procedure are primary result of complicated modelling paintings. those effects shape the foundation for the improvement of a brand new new release of CAD/CAM structures that are known as product modelling platforms. CAD/CAM structures this present day mostly help the geometric description of a technical half or its description as a technical drawing. complicated geometric modelling services take care of parametric layout features embedded into CAD/CAM structures. in spite of the fact that, improvement techniques for destiny CAD/CAM platforms are directed towards the next: 1. the advance of product modelling structures and a couple of. the advance of built-in platforms in accordance with CAD, CAP (Computer Aided Planning), CAM and different CIM (Computer built-in Manu facturing) functionalities.
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Extra info for Advanced Modelling for CAD/CAM Systems
1-3: Parallel 1/ Fixing an Intersection point 0 Examples for Technical and Operational Symbols 4. Geometric-Associative Modelling 43 The context analysis process adjusts the recognized object (geometry or technical entity) with respect to the semantics of the current context before transferring it to the CAD model. This process involves recognizing, retrieving and using geometric relationships such as parallel, angular, co-axial, symmetry. 2 o Example of a Context Based Semantic Adjustment of a Freehand Sketch The Rule Base In the proposed context analysis process the relevant geometric relationship is determined by the geometric context.
Geometric-Associative Modelling 41. ) position, orientation and dimension of the recognized geometric entity or symbol. This information will hereafter be refered to as position, orientation and dimension data (POD). The POD data is passed to the context analysis system for further processing of the semantic context. The recognition of both technical and command symbols requires a size and position invariant description of the symbol. Picture Description Languages (PDL) INAR-68/ are a technique well suited to this task.
A face must not be moved along a vector, which is perpendicular to its normal vector; the result would not be a solid. To understand the aspects of a technical sweep operator the technical details of the underlying modeller must be explained.
Advanced Modelling for CAD/CAM Systems by Hans Grabowski, Reiner Anderl, Michael J. Pratt