MBD is not another way of spelling ‘paperless engineering,’ as if mere convenience were the reason for such a strategic shift. Thanks to the TDP, users who sit downstream from engineering can understand and use that model without needing separate 2D artifacts – the information is in the model itself. At the core of the TDPs is the 3D model, along with its associated dimensioning and tolerancing to clearly communicate design intent and geometric form control. More formally known as model-based definition, MBD is about creating rich “Technical Data Packages (TDP),” which include the 3D model and associated data elements. The disconnect between the 2D drawing and 3D model is hobbling both their internal efficiency and external competitiveness. Now, manufacturers want to make the 3D model itself the gravitational center.
Initially, they might have started down this path to eliminate the extra work required to build 2D drawings off of their 3D models. When I speak with manufacturers, they often tell me that moving towards becoming more model-based is at the top of their priority list. By Brian Thompson, DVP and GM, CAD Segment, PTC
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