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Model Based Definition

Model-Based Definition – Capturing and communicating manufacturing specifications.

3D Model Based Definition

Model-Based Definition allows for the creation of a complete digital definition of a product within a 3D model, effectively replacing traditional drawings. Product teams can save time and ensure that intent is completely captured and associated with the model by empowering the model as the single source of truth. In comparison to drawing-centric workflows, NX reduces engineering documentation time, drives downstream tools for validation and manufacturing, and reduces late changes and scrap. There’s no need to be concerned about drawings and models not agreeing with each other when dimensional and tolerance information is available from a single source. Furthermore, annotated 3D models are easier to understand than complex drawings, reducing training requirements and the possibility of errors.

Model-Based Definition is comprised of powerful features that enable you to create a custom solution. Read more about these features below.

Leveraging Legacy Data

Not every project starts from scratch. Convert to PMI converts drawing views and objects to corresponding model views and PMI objects automatically, saving a significant amount of time when leveraging legacy data. Convert to PMI allows you to use legacy drawings to quickly and easily add intelligence to 3D models. Convert to PMI can convert entire drawings or individual sheets, views, and annotation objects. A conversion report summarises the results in detail. Converting to PMI allows for the support of processes based on 3D models at a much lower cost and with higher data quality.

Screenshot of Leveraging Legacy Data
Replacing the Universal 2D Drawing to 3D Form

Replacing the Universal 2D Drawing

People are familiar with 2D drawings, which they use to define a finished product. 2D drawings contain universally understood and interpreted standard symbology. In some cases, however, the existence of multiple, redundant data required to define a manufactured part can result in deviations in the final 3D form. Inconsistencies in interpretation, duplication, or revision can all contribute to costly mistakes, which quickly translate into lower quality and productivity.

The use of 2D drawings to communicate downstream production requirements adds unnecessary complexity to the product development cycle. A simple change in the product definition necessitates not only updated 3D digital data, but also numerous engineering changes to all associated 2D documentation. Because maintaining this documentation takes time, the lifecycle for implementing a product change grows in proportion to the extent of its associated 2D data. Product teams can capture and share engineering requirements within the 3D model, allowing full use of the design intent, eliminating the need for 2D drawings, and ensuring that the final product meets its engineering specifications.

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