CAD*I Drafting Model (Research Reports Esprit / Project 322. CAD Interfaces (CAD*1)): 4 (Research Reports Esprit, 4) - Softcover

Schuster, Richard

Softcover

ISBN 10: 3540520511 ISBN 13: 9783540520511

Verlag: Springer Verlag, 1990

Inhaltsangabe

An information model for annotation graphs represented within technical drawings is described in this book. The main purpose of the CAD*I Drafting Model described is to support the development of a neutral file specification for the exchange of drawing in

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Reseña del editor

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 annotation are described according to the international drawing standards. Thus the semantics pertinent to the specific graphical appearance are maintained. The data structures provide formal descriptions of annotations at a high generation level, which means that a "way" is defmed how to generate these annotations.

Reseña del editor

An information model for annotation graphs represented within technical drawings is described in this book. The main purpose of the CAD*I Drafting Model described is to support the development of a neutral file specification for the exchange of drawing information between differ- ent CAD systems. A new approach is used: starting with the formulation of statements that describe annotation graphs according to ISO drafting standards, the essence of the statements is transformed into the formal descriptions of the data structures. The data structures are designed with embedded rules, so that the graphs described by the structures must coincide with the ISO standards. The book is one of a series presenting the results of ESPRIT Project 322: CAD Interfaces (CAD*I). About 150 person-years of research have been spent on the project since it started in 1984. It has involved 12 partners in 6 countries of the European Community.

Details zur Ausgabe

• Verlag: Springer Verlag
• Erscheinungsdatum: 1990
• Sprache: Englisch
• ISBN 10: 3540520511
• ISBN 13: 9783540520511
• Einband: Tapa blanda
• Anzahl der Seiten: 248
• Kontakt zum Hersteller: Nicht verfügbar
• Verantwortliche Person: CMN Printpool Inh. Mathis Neumann; https://www.also.com/ec/cms5/en_6000/6000/index.jsp; ; Friedrich-Karl-Str. 9; Hamburg; Deutschland