You use a supplied sample model, which is the completed skeleton part, to derive the required frame parts. Examine this part before you create the assembly.
The part contains sketches, work features, and construction surfaces that define the basic geometry of a support frame for a spherical container. Skeleton models are suitable for static models, such as frames and other fabricated assemblies. The initial jumble of geometry may look a bit confusing, so we will look at the individual sketches and other geometry in the part.
1 - Strap Surface Profile
2 - Strap Surface
3 - Strap Body Profile
The spherical construction surface is the key feature in the part. The diameter of the sphere drives the other geometry in this skeleton, and consequently drives the size of parts derived from this skeleton.
The shared strap sketch contains two related profiles:
The three work planes below STRAP SURFACE define the vertical extents of the exterior frame. The BOTT of Frame work plane is used as the termination face for the vertical legs of the frame. The sketch for the vertical leg is on the TOP of Frame work plane.
The sketch contains a profile for the square tubing leg. The 2240-mm dimension is related to the diameter of the sphere. The size and thickness of the tubing is controlled with user-defined parameters. The following image shows the size of the tubing controlled by the TubeSize user parameter. The user-defined parameters are exported, and thus can be referenced by any of the parts derived from the skeleton part.