Roadmap for Deploying Semantic GD&T in Manufacturing

A five phase roadmap is proposed for deploying semantic GD&T in manufacturing. In the first phase real manufacturing is connected to virtual manufacturing using protocols such as MTConnect. In the second phase the virtual manufacturing results are connected to virtual and real CMM's. In the third phase new services optimize the models to make them more efficient while still meeting their design requirements. In the fourth phase closed loop machining systems evaluate proposed changes in real time. In the fifth phase the usage of cloud based models in virtual twin factories becomes ubiquitous. We describe how the virtual twin factories are built in Node.js, and how a new suite of protocols called the SWIM is used to track the relationships between normalized STEP models and the easy to use JSON objects of the virtual factory.