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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