MBD-ready models

Creating annotated 3D models from 2D Drawings - Model Based Definition (MBD) is the next engineering revolution, where annotated 3D models instead of traditional 2D drawings are used as the single source for design, engineering, manufacturing and quality control. If your company is implementing MBD, then you will need to create MBD-Ready models including the Product Manufacturing Information (PMI).

Creating annotated 3D models from 2D drawings

Creating MBD-ready models from 2D drawings

Until now, the only way to make annotated data available for MBD is a process in which a designer manually extracts the annotations from the 2D drawing and adds them to the 3D model. MBDVidia automatically extracts annotations from a 2D drawing and adds to the corresponding 3D model.  The process works for both parts and assemblies with single or multi-sheet drawings and it completes the job in a fraction of the time that it would take to build manually.  

MBDVidia for Creo Sync Functions:

  • Check Annotations in Drawing
  • Sync 3D Annotations with Drawing
  • Selective Mode
    • Drawing View(s)
    • Individual Annotations

The MBDVidia synchronization process supports the following annotation types:

  • Geometric Tolerances
  • Dimensions (basic, reference, toleranced)
  • Datum targets
  • Notes
  • Flag notes
  • Flat-to-screen annotations (notes from the background view)
  • Roughness (surface finish)
  • Weld symbols
  • Custom symbols 
  • and more…

Check Annotations in Drawing

Simply open any Creo 2D drawing and check the differences in the annotation between the 2D drawing and its associated 3D model. Differences are color coded:

  • Red - annotation in red is only present on the 2D drawing.
  • Blue – annotation is already on the 3D model
  • Orange – annotation is on the 3D model but is incomplete or incorrectly defined.
  • Green – annotation is “in sync” – 2D and 3D annotation are exactly the same
  • Gray – annotation not selected for synchronization

picture2MBDVidia highlights annotations on the 2D drawing that are not on the 3D model

Sync 3D Annotations with Drawing

Then, with a click of a button, MBDVidia adds annotation from the 2D drawing that is missing on the 3D model. It also corrects and updates incomplete or incorrect annotation on the 3D model.

New annotation features are added to the 3D model tree, grouping the annotations from the drawing view. Creo “Combined States” are automatically generated based on the drawing views to facilitate the presentation of the 3D model. Names of the annotation features and the combined states are taken from the drawing view name.

picture3Fully annotated MBD-Ready Model

If the 2D drawing has detailed views with cross sections, MBDVidia automatically creates cross-sections on the 3D model with annotations. In some cases, the annotations on the 3D model needs to be matched with those from an existing legacy drawing.

Automatic Consistency Checking

Bi-directional synchronization provides consistency checks and ensures full associativity between the 3D model and the 2D drawing.  These checks identify annotation errors and potential issues with outdated design practices commonly found in legacy 2D drawings.

Typical problems include:

  • Annotations attached to auxiliary geometry that is not defined on the 3D model
  • Annotations placed in the wrong drawing view
  • Incorrect definitions of Geometric Tolerances

For example, here is a geometric tolerance in a 2D drawing.   At first look, it seems to be correct.

picture4Geometric Tolerance in 2D drawing

After synchronization, the consistency checking has detected a problem (colored in red) with this geometric tolerance.  After a detailed inspection of the problem, one can see that the geometric tolerance has been designed as 3 separate notes to make it look like one geometric tolerance.  Visually it is OK as annotation for human interpretation, but for downstream reuse and correct interpretation by other software applications it is an inconsistent definition. These kinds of inconsistencies are very difficult or impossible to detect without specialized software and can cause serious problems in downstream processes.

picture5Geometric Tolerance in 2D drawing composed of 3 different notes

Selective Mode

Selective synchronization enables manual selection of individual annotations or drawing views for checking & synchronization.  

picture6Selected drawing view synchronized with 3D Model

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