Download e-book for kindle: CAD Geometry Data Exchange Using STEP: Realisation of by Helmut J. Helpenstein (auth.), Helmut J. Helpenstein (eds.)

By Helmut J. Helpenstein (auth.), Helmut J. Helpenstein (eds.)

ISBN-10: 3540569022

ISBN-13: 9783540569022

ISBN-10: 364278335X

ISBN-13: 9783642783357

The Product info expertise Advisory crew, brief PDTAG, was once confirmed on 30 September 1992 lower than the auspices of the ESPRIT CIME department of the Directorate common XIII of the ecu fee. Its ambitions comprise selling ecu cooperation and enhancing the ecu infrastructure in Product info expertise, fairly in reference to the hot general STEP (ISO 10303). The dissemination of knowledge on Product information expertise and on eu contributions to STEP is of the most important value to this improvement. the present quantity is the 1st name in a brand new PDTAG subseries to Springer Publishers' examine studies ESPRIT. This new subseries intends to shape a complete repository of guides on Product facts expertise caused by ESPRIT initiatives and from ecu contributions to standardisation in keeping with ISO/STEP. PDTAG welcomes the chance to make this data extra obtainable below the structure of a coherent subseries in the validated framework of analysis reviews ESPRIT. a lot worthwhile heritage at the new foreign PDT typical can hence be present in an identical collection.

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Additional resources for CAD Geometry Data Exchange Using STEP: Realisation of Interface Processors

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Surface roughness). Shape tolerances: An individual design part has typically a shape tolerance which is relevant for manufacturing and for its functionality. g. g. a slot for a fitting. Annotations and Visualisations: This category of model data is mainly for visualisation purposes of shape dimensions or for clarification reasons for humans. Also colors, shading, reflections, transparency belong to this. Geometric shape description (Geometry and topology): The shape description of mechanical design models can have different levels of completeness and constraints.

Presentation, Units, Names and Groups have not been taken care of. The same is valid for the functions specified in Part 205. No mechanisms are provided for checking the required representation of numbers. e. rules for mapping of EXPRESS entity specifications to the physical file format, have been incorporated. Compared to Part 21, the STEP Part derming the physical file format, these rules add information for the optional use of the SCOPE-statement. 4 Outlook Work on Part 205 will after the end of CADEX be taken further by other projects.

The Parts P41 and 43 contain product structure entities and Application Protocol information which has an impact to all application protocols. Prototype implementations which have to use this information are typically out of date after another STEP meeting. Issue 2: The product structure definition in Part 43 lacks semantics The various entities within P43 have a very complex relationship to each other, the underlaying semantics of the individual entities is not clear. The entities very often have a text string as a contents and the meaning of this text string is different to different people in different companies.

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CAD Geometry Data Exchange Using STEP: Realisation of Interface Processors by Helmut J. Helpenstein (auth.), Helmut J. Helpenstein (eds.)

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