Model Feature Pdf For Free

Feature-based modeling is the traditional and predominant method of creating 3D models in CAD/CAM software, which requires defining the geometry and topology of the model by adding and subtracting features such as sketches, extrusions, fillets, holes, and patterns.

A Feature Model (sometimes also known as a Feature Tree or Feature Diagram) is a simple, hierarchical diagram that visually illustrates the features, and their dependencies, of a solution in a production line.

A model can come in many shapes, sizes, and styles. It is important to emphasize that a model is not the real world but merely a human construct to help us better understand real world systems. In general all models have an information input, an information processor, and an output of expected results.

In feature-based design, the design process is focused on adding features to the product?on the assumption that features are what users want and that more features are better. The problem is that users don't do features, they do tasks?so it's very easy to add features that have little practical value.

Feature-based modeling allows part geometry to be represented by higher-level entities that relate directly to certain design functionalities or manufacturing characteristics.

The basic principle of feature-based modeling is to build models by adding simple features one at a time.

There are two types of solid modelling methods used in modern CAD systems: boundary representation (B-Rep) and construction solids geometry (CSG). With the B-Rep method a shape or profile is defined and then either a solid of revolution is produced about a given axis or the shape is extruded in a given direction.