Skeleton modeling.

Skeleton modeling is not a feature in Autodesk Inventor, it’s a design method, and its usually called a Top-down design concept. It is useful for controlling shapes, features and dimensions to complicated parts and assemblies. When done correctly it will simplify modifications and updates on multiple levels on entire 3D assemblies. A skeleton can consist of one, or several part files, but most common is to have one master part file as a starting point, where you start with defining the end result using work-features and/or constrained sketches.

Full control.
By using skeletons, you will have a base containing the overall information for both creating and controlling the parts that will be used in assemblies and sub-assemblies. This method ensures a fast and stable control over all parts and assemblies from one single source.
Faster placement.
Using skeleton is also beneficial to determine the relationship between entities in the assembly. The skeleton part file is also a reference to origin, which is very useful to determine part placements in assemblies using X, Y and Z coordinates.
Why use this method?

Working with this method, will provide you with a more stable Inventor model that will be better equipped to handle upcoming design changes. If your team work in a collaborative environment, It will be easier for the team members to work on the same design because it is all based on a single master skeleton design.

It might even provide some relief to the stress when you get those dreaded quick last minute changes.

A typical skeleton file usually contains these elements:

  • A basic sketch containing the shape of the final product.
  • Work geometry that defines connection points, axial directions or work planes that define levels.
  • Parameters that define the values for the size, angle and placement of parts.
  • Solids that can be derived into new parts.
If you have more questions, feel free to contact me, and I will do my best to help you get your answer.