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EDS announces Unigraphics NX 2

excerpted from  

May 1, 2003

See Also

  EDS website
  Unigraphics/SDRC Merger - extended coverage by TenLinks.com
  Unigraphics Directory - by TenLinks.com
  Unigraphics Reading Room - by CADdigest

At PLM World in Anaheim, California, EDS announced Unigraphics NX 2, the second release of its flagship CAD/CAM system since the merger of the SDRC and Unigraphics organizations in 2001.

Unigraphics NX is a direct lineal descendant of Unigraphics release 18, which traces its roots to the late 1970s. It is supposed to accomplish a number of strategic objectives. First and foremost, it is scheduled to be the CAD/CAM system used by current I-DEAS customers, as well as Unigraphics licensees, in 2005 and beyond.

The NX 2 selection-intent technique enables designers to create parts that withstand radical changes without failing. Changing the top profile of this pan …

… produces this pan with different topology.

To that end, EDS is incorporating capabilities of I-DEAS that Unigraphics didn’t have, such as variable-sweep surfaces and assembly configurations.

Unigraphics NX also is supposed to be easier and more efficient to use than either I-DEAS or earlier versions of Unigraphics.

The NX 2 release includes heavyweight improvements in a number of areas including solid part and assembly modeling, free-form surface and industrial design, drafting, and design of injection molds and progressive dies. Here is a summary of each.

Part modeling

Driven by its automotive customers, EDS continues to push the boundaries of part modeling with solids. One new capability in UG NX 2 is what EDS refers to by the abstract term “selection intent.”

NX 2 enables engineers to design one half of a part and see the other half reflected graphically across a plane of symmetry.

This technique resembles the “intent reference” functions introduced with Pro/Engineer 2000i2.

Selection intent enables Unigraphics users to specify more precisely the relationships among geometric entities, including blends, rounds, and edges. When used properly, these specifications enable designers to make changes to part sketches near the top of a model’s history tree without causing subsequent features to fail.
“The part navigator” in NX 2 lets designers find feature sketches and definitions graphically in order to make changes. A “part compare” function enables the two parts to be overlain on each other to show both differences and similarities.

Designers can even change the topology of a sketch, such as adding or deleting edges, and direct Unigraphics how to handle the profile in the revised model.

EDS also has enhanced what it calls Unigraphics’ “direct modeling extensions” (DMX). These enable engineers to alter parts that lack design features or those whose features don’t permit the needed modification.

NX 2 can automatically recognize blends and rounds on parts that were imported from other systems as featureless solids.

Once recognized, the radii of these blends may be changed, or they may be removed and redefined as Unigraphics features.

Most CAD systems have the ability to copy mirror images of features across one or two planes. The new “mirror display” of Unigraphics NX 2 gives this function a twist. Designers can create features for just half of a part model, then display the other half for visualization only.

When the design is complete, the engineer can then mirror all part features from one side to another in a single operation.


  • Assemblies
  • Industrial design & styling
  • Visualization and rendering
  • Drafting
  • Mastering it all

The full article is available for a fee at CADCAMNet.

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