Part Cylinder

    From FreeCAD Documentation

    Part Cylinder.svg Part Cylinder

    Menu location
    Part → Primitives → Cylinder
    Workbenches
    Part
    Default shortcut
    None
    Introduced in version
    -
    See also
    Part Primitives

    Description

    The Part Cylinder.svg Part Cylinder command creates a parametric cylinder solid. It is the result of extruding a circular arc along a straight path. In the coordinate system defined by its DataPlacement property, the bottom face of the cylinder lies on the XY plane with its center at the origin.

    A Part Cylinder can be turned into a segment of a cylinder by changing its DataAngle property.

    Part Cylinder Example.png

    Usage

    1. There are several ways to invoke the command:
      • Press the Part Cylinder.svg Part Cylinder button.
      • Select the Part → Primitives → Part Cylinder.svg Cylinder option from the menu.
    2. The cylinder is created.
    3. Optionally change the dimensions and DataPlacement of the cylinder by doing one of the following:
      • Double-click the object in the Tree view:
        1. The Geometric Primitives task panel opens.
        2. Change one or more properties.
        3. The object is dynamically updated in the 3D view.
        4. Press the OK button.
      • Change the properties in the Property editor.
      • Change the DataPlacement with the Std TransformManip.svg Std TransformManip command.

    Example

    Part Cylinder from the scripting example

    A Part Cylinder object created with the scripting example below is shown here.

    Notes

    • A Part Cylinder can also be created with the Part Primitives.svg Part Primitives command. With that command you can specify the dimensions and placement at creation time.

    Properties

    See also: Property editor.

    A Part Cylinder object is derived from a Part Feature object and inherits all its properties. It also has the following additional properties:

    Data

    Attachment

    The object has the same attachment properties as a Part Part2DObject.

    Cylinder

    • DataRadius (Length): The radius of the circular arc that defines the cylinder. The default is 2mm.
    • DataHeight (Length): The height of the cylinder. The default is 10mm.
    • DataAngle (Angle): The angle of the circular arc that defines the cylinder. Valid range: 0° < value <= 360°. The default is 360°. If it is smaller than 360° the resulting solid will be a segment of a cylinder.

    Prism

    • DataFirst Angle (Angle): The angle between the extrusion direction of the cylinder and its positive Z axis, measured around its Y axis. The angle is positive towards its positive X axis. Valid range: 0° <= value < 90°. The default is . introduced in version 0.20
    • DataSecond Angle (Angle): The angle between the extrusion direction of the cylinder and its positive Z axis, measured around its X axis. The angle is positive towards its positive Y axis. Valid range: 0° <= value < 90°. The default is . introduced in version 0.20

    Scripting

    See also: Autogenerated API documentation, Part scripting and FreeCAD Scripting Basics.

    A Part Cylinder can be created with the addObject() method of the document:

    cylinder = FreeCAD.ActiveDocument.addObject("Part::Cylinder", "myCylinder")
    
    • Where "myCylinder" is the name for the object.
    • The function returns the newly created object.

    Example:

    import FreeCAD as App
    
    doc = App.activeDocument()
    
    cylinder = doc.addObject("Part::Cylinder", "myCylinder")
    cylinder.Radius = 10
    cylinder.Height = 50
    cylinder.Placement = App.Placement(App.Vector(5, 10, 15), App.Rotation(75, 60, 30))
    
    doc.recompute()