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Titlebook: CAD*I Drafting Model; Richard Schuster,Dietmar Trippner,Michael Endres Book 1990 ECSC — EEC — EAEC, Brussels — Luxembourg 1990 Datenstrukt

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书目名称CAD*I Drafting Model
编辑Richard Schuster,Dietmar Trippner,Michael Endres
视频videohttp://file.papertrans.cn/221/220147/220147.mp4
丛书名称Research Reports Esprit
图书封面Titlebook: CAD*I Drafting Model;  Richard Schuster,Dietmar Trippner,Michael Endres Book 1990 ECSC — EEC — EAEC, Brussels — Luxembourg 1990 Datenstrukt
描述The content of this book is an information model for technical drawings, the so-called "Drafting Model". The Drafting Model is a part of a complex information model describing product definition data, their applications and their representations. The definition of the information model is a central component of the development of STEP, a future international standard for the exchange of product defmition data. Here the Drafting Model particularly encloses descriptions for the representations of organizational drawing data, tolerances, dimensions and surface attributes such as surface fmish symbols (a survey of the whole content is shown in the figure above). Additional to that requirements for the Presentation Model concerning the representation of geometry as well as the integration process for both the Drafting and the Presentation Models are formulated. The extent of the Drafting Model is restricted to the application area "Mechanical Engineering". Within the Drafting Model the annotation representations are described on the one hand informally and on the other hand formally using a high level language for information modeling, EXPRESS. Principally the representations of the ann
出版日期Book 1990
关键词Datenstrukturen; Graph; ISO-Standard; Rechnerunterstützer Entwurf; data structures; mechanical engineerin
版次1
doihttps://doi.org/10.1007/978-3-642-84058-6
isbn_softcover978-3-540-52051-1
isbn_ebook978-3-642-84058-6
copyrightECSC — EEC — EAEC, Brussels — Luxembourg 1990
The information of publication is updating

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Book 1990ormation model describing product definition data, their applications and their representations. The definition of the information model is a central component of the development of STEP, a future international standard for the exchange of product defmition data. Here the Drafting Model particularly
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The Drafting Model,sion graphs, tolerances and surface attributes. Descriptions of representations of the projected geometry are not integrated in the Drafting Model, but by describing necessary geometry appearances requirements are formulated for the responsible information models, especially the Presentation Model.
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Drawing Organization,the sheets, the positioning of views on the sheets, etc. The rules of representation of the product information contain the applied drafting standard with its projection rules, the line width usage, etc.
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Introduction,fferences in hardware configurations — by different file formats, partially different information contents and different ways to describe the information contents. Those differences result from efforts to optimize the software with regard to the need of storage, running time of the functions of the system and the integrity of its data.
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