Does SolidWorks Use Nurbs?

Does SolidWorks Use Nurbs?

When it comes to computer-aided design (CAD) software, SolidWorks is one of the most popular choices among engineers and designers. But does SolidWorks use NURBS? Let’s explore this question in detail.

Understanding NURBS

NURBS stands for Non-Uniform Rational B-Splines. It is a mathematical representation commonly used in computer graphics and CAD to describe complex 3D geometry. NURBS curves and surfaces are defined by control points and mathematical formulas.

NURBS provide a flexible way to create smooth curves and surfaces that can be easily manipulated and modified. They are widely used in various industries, including automotive design, aerospace engineering, and product development.

SolidWorks and NURBS

SolidWorks does utilize NURBS extensively in its modeling capabilities. It uses a hybrid modeling approach that combines traditional solid modeling techniques with surface modeling using NURBS curves and surfaces.

With SolidWorks, you can create complex 3D models by combining different geometry elements such as lines, arcs, splines, and surfaces. The software allows you to define these elements using NURBS curves or convert them into NURBS-based entities for further manipulation.

The Benefits of Using NURBS in SolidWorks

  • Accuracy: NURBS provide a high level of accuracy compared to other modeling methods. This precision is crucial when designing intricate parts or assemblies.
  • Smoothness: NURBS produce smooth curves and surfaces that closely resemble real-world objects.

    This ensures that your designs have the desired aesthetic appeal.

  • Flexibility: NURBS allow for easy modification and control over the shape of your models. You can adjust control points and edit the mathematical formulas to achieve the desired design outcome.
  • Interoperability: SolidWorks supports various file formats, including IGES, STEP, and SAT, which are commonly used for exchanging NURBS-based models with other CAD software.

Working with NURBS in SolidWorks

In SolidWorks, creating NURBS-based models is a straightforward process. You can start by creating sketches using traditional geometry elements like lines and arcs. Then, you can convert these sketches into NURBS curves or surfaces using the appropriate commands in the software.

Once you have your NURBS-based entities, you can manipulate them by adjusting control points or modifying the mathematical formulas that define their shape. SolidWorks provides a range of tools for editing and refining NURBS curves and surfaces to achieve the desired design outcome.

You can also combine solid modeling features with NURBS-based features in SolidWorks to create complex assemblies that incorporate both geometric precision and organic shapes.


In conclusion, SolidWorks does use NURBS extensively in its modeling capabilities. The software allows engineers and designers to create accurate and visually appealing 3D models by utilizing the flexibility of NURBS curves and surfaces. By understanding how to work with NURBS in SolidWorks, you can leverage this powerful feature to bring your design ideas to life.