- Rigged objects or characters - 
- Is there a free part library of riged objects for Blender?
- Create a rigged library for OSE machines
- How to rig? Human rigs already exist - . There are likely many rig libraries already available.
- Example of rigging machines - 
- Blender for Engineering ? 
- Blender AI - 
- Mechanical Blender Haven't Checked it out yet, but this seems like the most "Complete" blender cad, other options exist, but are often bits and pieces