零件模块
Introduction
简介
FreeCAD的实体建模能力都是基于 Open Cascade Technology (OCCT)内核——一种具有创建与处理高级3D几何体等特性的专业级CAD系统。零件工作台(Part Workbench)是一种建立于OCCT库之上的层级,为用户提供了访问OCCT几何图元与函数的功能。每种工作台(如底图工作台, 草图工作台, 零件设计工作台等等)的一切2D与3D绘制功能其实都是基于零件工作台暴露出的函数实现的。因此,可以认为零件工作台是FreeCAD建模功能的核心组件。
A more detailed discussion of Part workbench versus Part Design workbench can be found here: Part and Part Design.
以零件工作台创建的对象相对简单;为了构建更为复杂的几何图形,可以为之运用布尔运算(并集与减运算)。此建模范式就是尽人皆知的构造实体几何 (CSG) 工作流程,它是早期CAD系统中所用的传统方法。另一方面,零件设计工作台(PartDesign Workbench)还提供了更为现代的工作流程来构建几何图形:它利用参数化方式来定义草图,再将其挤压成型为基本的实体对象,最后通过参数化变换(特征编辑)来修改模型,直到用户获取预期的最终模型为止。
零件对象比网格工作台(Mesh Workbench)创建的网格对象更为复杂,因为用户可以对前者执行更为高级的操作,如连续的布尔运算、修改历史与参数化处理。
零件工作台是最基础的层级,它为FreeCAD中的其他工作台暴露出OCCT的各种绘制函数
工具
这些工具皆位于Part菜单。
图元
以下这些工具用于创建图元对象。
Box: 根据指定的规格绘制一个立方体
Cylinder: 根据指定的规格绘制一个圆柱体
Sphere: 根据指定的规格绘制一个球体
Cone: 根据指定的规格绘制一个圆锥体
Torus: 根据指定的规格绘制一个环面(torus)(圆环 (ring))
CreatePrimitives: 一种用于创建各类参数化几何图元的工具
Shapebuilder: 一种利用各种参数化几何图元创建更加复杂几何图形的工具
Cylinder: Creates a cylinder.
Sphere: Creates a sphere.
Cone: Creates a cone.
Torus: Creates a torus.
Tube: Creates a tube.
Create primitives...: A tool to create one of the following primitives:
Plane: Creates a plane.
Box: Creates a box. This object can also be created with the
Box tool.
Cylinder: Creates a cylinder. This object can also be created with the
Cylinder tool.
Cone: Creates a cone. This object can also be created with the
Cone tool.
Sphere: Creates a sphere. This object can also be created with the
Sphere tool.
Ellipsoid: Creates a ellipsoid.
Torus: Creates a torus. This object can also be created with the
Torus tool.
Prism: Creates a prism.
Wedge: Creates a wedge.
Helix: Creates a helix.
Spiral: Creates a spiral.
Circle: Creates a circular arc.
Ellipse: Creates an elliptical arc.
Point: Creates a point.
Line: Creates a line.
Regular polygon: Creates a regular polygon.
Shape builder...: Creates shapes from various primitives.
修改对象
这些工具用于修改已存在的对象。通过它们即可选取待修改的对象。
Revolve: Creates a solid by revolving an object (not a solid) around an axis.
Mirror: Mirrors the selected object across a mirror plane.
Scale: Scales one or more shapes. introduced in version 0.22
Fillet: Fillets (rounds) edges of an object.
Chamfer: Chamfers edges of an object.
Make face from wires: Makes a face from a set of wires (contours).
Ruled Surface: Creates a ruled surface.
Loft: Lofts from one profile to another.
Sweep: Sweeps one or more profiles along a path.
Section: Creates a section by intersecting an object with a section plane.
Cross sections...: Creates one or more cross-sections through an object.
Thickness: 镂空一个实体,在选中的面上留下开口。
Projection on surface: 向表面上投影logo、文本或任意表面、连线、边。可以为投影部分创建一个示例或连线。(v0.19)
Attachment: Attaches an object to another object.
Boolean
These tools perform boolean operations.
Compound Tools:
Make compound: Creates a compound from the selected objects.
Explode Compound: Splits up compounds.
Compound Filter: Extracts the individual pieces from compounds.
Boolean: 在对象上执行布尔运算
Cut: Cuts (subtracts) one object from another.
Fuse: Fuses (unions) two or more objects.
Common: Extracts the common (intersection) part of two objects.
Splitting tools:
Boolean fragments: Creates all pieces obtained from Boolean operations.
Slice apart: Slices and splits an object by intersecting it with other objects.
Slice: Slices an object by intersecting it with other objects.
XOR: Removes space shared by an even number of objects.
Measure
Measure Linear: Creates a linear measurement.
Measure Angular: Creates an angular measurement.
Measure Refresh: Updates all measurements.
Clear All: Clears all measurements.
Toggle All: Shows or hides all measurements.
Toggle 3D: Shows or hides 3D measurements.
Toggle Delta: Shows or hides delta measurements.
其他工具
Import: 您可利用此工具为当前文档添加*.IGES、*.STEP、*.BREP文档。
Export: Exports to *.IGES, *.STEP, or *.BREP files.
Box selection: Selects faces from a rectangular area.
Create shape from mesh: Creates a shape object from a mesh object.
Create points object from geometry: Creates a points object from a geometric object.
Convert to solid: Converts a shape object to a solid object.
Reverse shapes: Flips the normals of all faces of selected objects.
- Create a copy:
Create simple copy: Creates a simple copy of a selected object.
Create transformed copy: Creates a transformed copy of a selected object.
Create shape element copy: Creates a copy from an element (vertex, edge, face) of a selected object.
Refine shape: Cleans faces by removing unnecessary lines.
Check geometry: Checks the geometry of selected objects for errors.
Defeaturing: Removes features from an object.
Appearance: Determines the appearance of a whole object (color, transparency etc.).
Set colors: Assigns colors to individual faces of objects.
首选项
Preference ... 导入 导出
脚本
参见: 零件脚本
教程
- 从STL或OBJ文件中导入数据 : 如何在FreeCAD中导入STL/OBJ文件。
- 导出STL或OBJ文件 : 如何从FreeCAD中导出STL/OBJ文件
- Whiffle球教程 : 如何使用零件模块
- Import from STL or OBJ : How to import STL/OBJ files in FreeCAD
- Export to STL or OBJ : How to export STL/OBJ files from FreeCAD
- Whiffle Ball tutorial : How to use the Part Module
- Primitives: Box, Cylinder, Sphere, Cone, Torus, Tube, Create primitives, Shape builder
- Creation and modification: Extrude, Revolve, Mirror, Fillet, Chamfer, Make face from wires, Ruled Surface, Loft, Sweep, Section, Cross sections, 3D Offset, 2D Offset, Thickness, Projection on surface, Attachment
- Boolean: Make compound, Explode Compound, Compound Filter, Boolean, Cut, Fuse, Common, Connect, Embed, Cutout, Boolean fragments, Slice apart, Slice, XOR
- Measure: Measure Linear, Measure Angular, Measure Refresh, Clear All, Toggle All, Toggle 3D, Toggle Delta

- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Arch, Draft, FEM, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Points, Reverse Engineering, Robot, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
- Hubs: User hub, Power users hub, Developer hub