At present, software and steel structure CAD are often used to draw a round place or a round place, and the whole layout can be easily and automatically unfolded in a few seconds. Pay attention to the equal circumference. Before the celestial circle is unfolded, parameters such as length × width, diameter of circle, height of object, eccentricity and thickness of object need to be determined.

Compared with two-dimensional drawings and two-dimensional drawing software, which are commonly used to expand data, three-dimensional CAD software can reflect entities and features more intuitively and accurately. For professional enterprises, due to different drawing objectives, there are often multiple CAD systems in parallel, so it is necessary to configure a unified and cross-platform component data resource library.

The model data in standard parts library and purchased parts library are exported to 3D configuration system in intermediate format (such as IGS and STEP). ), such as Autodesk Inventor, SolidWorks, CATIA, China Net 3D, Pro/E, AutoCAD, UG NX, Solid Edge, OneSpace, etc.

In foreign countries, this kind of network service is called part library or data resource library. Pro/E is widely used in aerospace field, while Catia is mostly used in complex product manufacturing fields such as airplanes and automobiles. Solidworks is widely used in small and medium-sized enterprises. Among PLM users in Europe, America and Japan.

LinkedIn part community is an Internet-based PLM parts data resource platform, and its popularity is no less than that of today's well-known online platforms such as blogs and SNS.

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