Engineering Drawing Object Class Document Management

Engineering drawing is one of the most important technical documents in manufacturing enterprises. In addition to CAD documents, there are still a lot of old paper engineering drawings in the enterprise.

In addition, CAD documents are also converted into file formats in various data exchange formats, vector formats and raster formats. Therefore, the engineering management module of the PDM system must be able to manage a large number of different physical documents.

When conducting management, business objects, engineering drawings, basic records and data object engineering diagrams are usually used.

There is a 1:n connection between the basic records of engineering drawings and CAD engineering drawings, paper engineering drawings, and general data and notes.

The basic record of each engineering drawing can be associated with any number of data objects.

Compared with document basic records and documents, engineering drawings basic records and engineering drawings add some properties related to drawings, such as classification index keys, standards, weights, materials, scales, maps, and purposes of use.

Usually, for standard parts, the index keys are dynamically read from the basic records of parts.

The weight is calculated according to the 3D model when drawing engineering drawings, and is obtained through the pdm/cad interface.

The purpose of the attribute is used to indicate the purpose of the engineering drawing. An engineering drawing can be used for quotation, design or inspection purposes.

Important attributes for selecting engineering drawing objects, such as graph numbers, names or markings, can be dynamically copied and displayed from the basic records of relevant engineering drawings.

In the actual work, a CAD file can usually include several drawings, using this method to store the CAD

Drawings of engineering drawings, so there is a n:m connection between the basic records of object engineering drawings and multi page documents.

At the same time, a multi page document must contain any number of drawings, so there is a 1:n connection between multi page documents and drawings.