Model-based definition (MBD) adoption comes with some challenges. But ...
For Better Assembly Visualization, Try Combination States
- 4/12/2021
- Read Time : 4 min.
In previous blog posts, we looked at combination states in the context of model-based definition (MBD). We use combination states to organize our 3D annotations to make them more readable and user-friendly. However, combination states have enormous capability for controlling the visualization of your models. In assemblies, these include:
- Simplified Representations
- Explode States
- Cross Sections
- Style States
- Appearance States
I use combination states for images in presentations and reports (“viewgraph engineering”). Also, when I present a model in Creo in design reviews, I display the combination states in tabs at the bottom of the graphics area. A single click switches between one prepared view and another.
Simplified Representations
Other blog posts have discussed simplified representations as a large assembly management tool. You can control how much detail you bring into your computer’s RAM so it can operate more efficiently. Simplified representations can exclude components from view. This can be easier to manage than Hide and Layers to turn off the display of components.
Explode States
To communicate how the components in an assembly are put together, we can translate and rotate them from their final positions. In CAD, this is called an explode state. Furniture assembly instructions from Ikea are like explode states.
Image: Explode state of an engine assembly in Creo.
Cross Section
To understand how a part needs to be manufactured, we want to see the interior wall thickness or cutaways of holes and voids. At the assembly level, we may want to see the components inside an enclosure. To do so, we may put a slice through the model using a plane or a sketch of straight lines. This is a cross section.
Image: Cross section view in Creo.
Style States
You can display your model in various modes in Creo. These include wireframe, hidden line, no hidden line, shaded, and shaded with edges. When you have the model displayed in one of these modes, for clarity you can make individual components appear in other modes. The model could be shaded with edges, but exterior components could be in no hidden line display so people can see inside. This combination of display modes can be stored as a style state.
Appearance States
Each part model has its own defined appearance, which can be a color or a texture. Appearance states allow you to have multiple appearances applied to components in the assembly and choose which one is active.
Putting It All Together
A combination state consists of a saved orientation, any or all of these visualization states, 3D annotations, and more. In this way, a combination state gives you full control over managing the display of your models exactly how you want to communicate it and have others perceive it.
Image: A combination state incorporating multiple view states in Creo.
Additional Power
These combination states can be published to viewables that can be opened using Creo View. In this way, you can extend visualization across the enterprise. People downstream in the supply chain and in other groups like planning, sales, and marketing can view your combination states.
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