![]() The different types of product information targeted by the exchange process may vary throughout the life cycle of the product. Numerical Control tool paths, Geometric dimensioning and tolerancing ( GD&T), process planning and assembly structure history trees, formulas, rules, guidelines revision level, file path on the computer or network storage.Metadata – non-graphical attributes, e.g.: : 164. ![]() CAD data content Īlthough initially targeted for the geometric information ( wire frame, surfaces, solids and drawings) of a product, nowadays there are other pieces of information that can be retrieved from a CAD file: There are three options available for CAD data exchange: direct model translation, neutral file exchange and third-party translators. The exchange process targets primarily the geometric information of the CAD data but it can also target other aspects such as metadata, : 153 knowledge, manufacturing information, tolerances and assembly structure. For interoperability purposes a requirement of accuracy in the data exchange process is of paramount importance and robust exchange mechanisms are needed. ![]() They differ in their application aims, user interfaces, performance levels, and in data structures and data file formats. Since the 1980s, a range of different CAD technologies have emerged. ![]() : 157 Transfer of data is necessary so that, for example, one organization can be developing a CAD model, while another performs analysis work on the same model at the same time a third organization is responsible for manufacturing the product. Many companies use different CAD systems and exchange CAD data file format with suppliers, customers, and subcontractors. CAD data exchange is a method of drawing data exchange used to translate between different computer-aided design ( CAD) authoring systems or between CAD and other downstream CAx systems. ![]()
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