Feature

Introduzione

In FreeCAD the word "Feature" is normally used to refer to a PartDesign Feature object (PartDesign::Feature class) that is defined by the PartDesign Workbench. This is an operation or modelling step performed to create or modify a solid Shape following the feature editing paradigm.

See PartDesign Feature for more information about this type of object.

Utilizzo

1. Switch to the PartDesign Workbench.
2. Press PartDesign Body.
3. Press PartDesign NewSketch to create a new Sketch.
4. Create a closed wire, and then use PartDesign Pad to extrude the sketch, and create an initial solid. This initial solid is the initial Feature.
5. Add more sketches and pads, and use other tools of the PartDesign Workbench to modify and transform the initial solid. Each of these steps correspond to Features of the Body.
6. Alternatively, add primitive objects, like PartDesign Additive box and PartDesign Subtractive cylinder. Any number of additive and subtractive steps are Features that are used to create a final volume.

Note

In the general sense, a "Feature" can be any modelling step used to create a final Shape, with any tool of any workbench.

• For example, in the Part Workbench, in the constructive solid geometry workflow, a "Feature" could be any boolean operation, like Part Fuse, Part Cut, or Part Common.

In a more specific sense, a "Feature" is a modelling step used inside a PartDesign Body.

• For example, PartDesign Additive cylinder, PartDesign Additive loft, PartDesign Pocket, PartDesign Subtractive cone, etc., are all "Features".

Documentazione di PartDesign

• Structure tools: Part, Group
• Helper tools: Create body, Create sketch, Edit sketch, Map sketch to face

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• Modeling tools
  • Datum tools: Create a datum point, Create a datum line, Create a datum plane, Create a local coordinate system, Create a shape binder, Create a clone
  • Additive tools: Pad, Revolution, Additive loft, Additive pipe, Additive box, Additive cone, Additive cylinder, Additive ellipsoid, Additive prism, Additive sphere, Additive torus, Additive wedge
  • Subtractive tools: Pocket, Hole, Groove, Subtractive loft, Subtractive pipe, Subtractive box, Subtractive cone, Subtractive cylinder, Subtractive ellipsoid, Subtractive prism, Subtractive sphere, Subtractive torus, ‎Subtractive wedge

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• Transformation tools: Mirrored, Linear Pattern, Polar Pattern, Create MultiTransform
• Dress-up tools: Fillet, Chamfer, Draft, Thickness
• Boolean: Boolean operation

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• Extras: Migrate, Shaft design wizard, Involute gear
• Contextual Menu tools: Set tip, Move object to other body, Move object after other object

Documentazione di Part

• Primitives: Box, Cone, Cylinder, Sphere, Torus, CreatePrimitives, Shapebuilder

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• Modifying objects: Booleans, Union, Common, Cut, Join features, Connect, Embed, Cutout
• Splitting tools: Boolean fragments, Slice a part, Slice, XOR, Part Defeaturing
• Compound: Make compound, Explode Compound, Compound Filter; Extrude, Fillet, Revolve, Section, Cross sections, Chamfer, Mirror, Ruled Surface, Sweep, Loft
• Offset tools: 3D Offset, 2D Offset, Thickness, Projection on surface

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• Other tools: Import, Export, Shape from Mesh, Convert to solid, Reverse shapes, Create simple copy, Create transformed copy, Create shape element copy, Refine shape, Check geometry, Measure, Attachment

Oggetti del documento

• Cuore: App DocumentObject
• Base: App FeaturePython, App GeoFeature, Part Feature, Mesh Feature, Fem FemMeshObject
• Forme interne: Part TopoShape, Mesh MeshObject, Fem FemMesh

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• Struttura: App DocumentObjectGroup (Std Group), App Part (Std Part), App Link
• Derivate: Part Part2DObject, Sketcher SketchObject, PartDesign Body, PartDesign Feature

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• Spiegazione: Model, Shape, Body, Feature, Part, Mesh, Sketch, Drawing

Documentazione utente

• Installazione: Windows, Linux, Mac; Getting started
• Base: About FreeCAD, Workbenches, Preferences, Document structure, Interface Customization, Properties, Mouse Model; Tutorials
• Ambienti: Menu di base; Arch, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Plot, Points, Raytracing, Reverse Engineering, Robot, Ship, Sketcher, Spreadsheet, Start, Surface workbench, TechDraw, Test Framework, Web

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• Scripting: Introduction to Python, FreeCAD scripting tutorial, FreeCAD Scripting Basics, How to install macros, Gui Command, Units Modules: Builtin modules, Workbench creation, Installing more workbenches Meshes: Mesh Scripting, Mesh Module Parts: The Part Module, Topological data scripting, PythonOCC, Mesh to Part Coin scenegraph: The Coin/Inventor scenegraph, Pivy Qt interface: PySide, Using the FreeCAD GUI, Dialog creation Parametric objects: Scripted objects Other: Code snippets, Line drawing function, Embedding FreeCAD, FreeCAD vector math library, Power users hub, Python, Macros, FreeCAD Scripting Basics, Topological data scripting

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• Ambienti deprecati: Complete, Drawing