About the 3D Object
This topic discusses the following concepts:
In a Volume Helical Sweep feature, you create a 3D object by sketching or selecting a sketch, and the system revolves it 360° around an axis of revolution.
Showing the 3D object
When the
3D object dragger is shown, you can also show the 3D object by clicking
. You cannot show the 3D object without showing the dragger.
Section requirements for 3D objects
These are the requirements for a section so that the system can revolve it to create a 3D object:
• Contain a line along the y-axis, that serves as the axis of revolution of the 3D object. The y-axis is colored green in the 3D object dragger, and when the Sketch tab is open
• Lie on one side of the y-axis
• Contain only lines and circular arcs
• Closed
• Convex
• The 3D object that results from revolving the section about the y-axis must be convex
Examples:
• The following section is valid for creating a 3D object. It is convex, and revolving it creates a convex object:
• The following section is not valid because though the sketch is convex, the 3D object that results when you revolve it is not convex:
• The following section is not valid because it is not convex:
