About the Mechanism Design Model Tree in Assembly
Mechanism design and movement is based on connections between moving rigid bodies. As you configure your assembly by using predefined constraint sets, components are automatically assigned to rigid bodies. Connections between rigid bodies are not visible in the Assembly Model Tree. To view rigid bodies in the Assembly Model Tree, add the Rigid Body # column to the tree. For more information about the Tree Columns dialog box, search the Help Center.
A simplified version of the Mechanism Design Model Tree is available in Assembly, although the mechanism entities are not displayed. Use it to view and edit the predefined constraint sets configured between the rigid bodies. In the Model Tree click 
> . The Mechanism Design Tree appears in the bottom section of the Model Tree. Both panes are affected when you change Tree Filters and Tree Columns.
> . The Mechanism Design Tree appears in the bottom section of the Model Tree. Both panes are affected when you change Tree Filters and Tree Columns.The Mechanism Design Model Tree displays your model's rigid bodies in a separate Rigid Bodies folder. This folder contains the folders you selected in the Mechanism tab of the Model Tree Items dialog box including the Ground folder, body folders and the Excluded Components folder. The Ground folder contains Incoming Connections and Body Contents folders. Each body folder contains Incoming Connections and Body Contents folders. The Excluded Components folder contains components excluded from dragging operations, components excluded by simplified representations, and suppressed objects. Body contents and connections are not displayed in this folder. Envelopes and Motion Skeletons are displayed in the Mechanism Design Model Tree as well.
Right-click a component in the Assembly Model Tree or in the Mechanism Design Model Tree to edit it. The selected component or entity in the Mechanism Design Model Tree is highlighted in the Assembly Model Tree and vice-versa. The entity is highlighted on the model in the graphics window as well.
 | For large models with several connections, you can often find a specific connection in the Model Tree more easily than on the model. |