Create standard part sketches and analysis of 3D solid models

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The CATIA standard software provides a parametric design tool, the Formula function, which uses the Formula function to create Parameters and establishes the relationship between parameters and entities. The dimension parameters include the description of the feature size of the part, the relationship between the feature and the element. Parametric modeling requires the definition of constraint relationships. Model entities need to be fully constrained, but at the same time they cannot be over-constrained.

Parametric modeling steps for standard parts: (1) First enter the Part Design module. Create sketches and 3D solid models, and build model constraints at the same time, taking care not to lose the necessary constraints while avoiding over-constraints. (2) Create parameters using the Formula function. Dimensional parameters must be strictly in accordance with the dimensions marked on the standard drawings, and parameters must not be added or modified at will. (3) Create a functional relationship between parameters and entity dimensions.

Create a standard part of the same series of design tables, the difference in size is determined by the value of the size parameter. Through the Design Table function, create a design table of the parameterized solid model, define the attribute parameters and size parameters of the design table, including PartNumber (ID number), Name (part name) and size information. The design table is saved in an excel data table format. The excel table is used as an external value of the CATIA document, and different entity models are generated by modifying the value of the table. Creating the standard library file CATIA standard components are managed through the Catalog. The Catalog consists of chapters and families (Families) to form the data structure of the standard parts library. The standard part model with the design table is imported into the corresponding series of the Catalog, and the single instance model of different model specifications is resolved according to the values ​​in the design table. By browsing the Catalog library, you can quickly preview the standard part model instance, the Catalog's "chapter" and "keyword" to classify the model management.

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