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Validation for Downstream Computer Aided Manufacturing and Coordinate Metrology Processes



Asa Trainer, Allison Barnard Feeney, Thomas D. Hedberg Jr.


To achieve industry's vision of the Model-Based Enterprise (MBE), the MBE strategy must include model-centric data interoperability for design to manufacturing and quality in the supply chain. The Model-Based Definition (MBD) is created by the OEM using Computer-Aided Design (CAD) tools. This information is then shared with the supplier so that they can manufacture and inspect the physical parts. Today, almost all suppliers use Computer-Aided Manufacturing (CAM) and Coordinate Measuring Machine (CMM) models respectively for these tasks. In the MBE vision for model-centric data exchange, the CAD model must include product and manufacturing information (PMI) in addition to the shape geometry. Today's CAD tools can generate models with embedded PMI, with the emergence of STEP AP242, a standards-based model with embedded PMI can now be shared downstream. This project investigates the ability to utilize a STEP AP242 model with embedded PMI for CAD-to-CMM data exchange. The project examines transformational processes and identifies gaps that will impact industry's ability to achieve model-centric data interoperability cost-effectively in the pursuit of the MBE vision.
Grant/Contract Reports (NISTGCR) - 16-003
Report Number


STEP, interoperability, MBE, manufacturing


Trainer, A. , Barnard Feeney, A. and Hedberg Jr., T. (2015), Validation for Downstream Computer Aided Manufacturing and Coordinate Metrology Processes, Grant/Contract Reports (NISTGCR), National Institute of Standards and Technology, Gaithersburg, MD, [online],, (Accessed May 30, 2024)


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Created September 29, 2015, Updated October 12, 2021