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Model-Based Definition (MBD) is the process of documenting the information necessary to manufacture and inspect a part or an assembly in the 3D Computer Aided Design (CAD) model as opposed to a traditional 2D production drawing. The component’s product manufacturing information (PMI) – dimensions, geometric tolerances, notes, symbols, surface finishes, and more – are captured as 3D annotations. The model geometry and surfaces that pertain to the annotations are stored as semantic references, which means that manufacturing and inspection programs and machines can read them.
With every version of Creo, more functionality has been added to make MBD easier and bring the implementation in line with the latest ASME and ISO standards. Let’s take a look at advancements in MBD in the last six versions of Creo.