Reverse Engineering Enhances CAD Software Capabilities

Delcam’s PowerShape Pro features data repair and direct-modeling functionality as well as CopyCAD reverse-engineering capabilities.

New Product Announcements From: 4/29/2012 Modern Machine Shop

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Delcam’s PowerShape Pro features data repair and direct-modeling functionality as well as CopyCAD reverse-engineering capabilities. According to the company, the extended functionality enables users to create CAD models from virtually all types of digitized scan data and re-engineer existing products into improved or customized designs.
 
The CAD software offers Tribrid modeling, which adds triangle modeling to surface and solid modeling. Combining the different modeling techniques in a single package reduces the need to transfer data between multiple programs and streamlines the entire product-development process, the company says.
 
The CAD model uses triangle modeling to capture the design intent from the physical model rather than producing a duplicate digital version, the company says. This enables users to generate models from items that are worn or damaged.
 
Three techniques can be used to convert the scan data into the CAD model. The first technique is used for creating simple geometric entities. The CAD software uses the positions of key points to create arcs and lines and converts them into the full range of prismatic solids.
 
For more complex shapes, the software contains all the sculpting and model repair tools previously available only in CopyCAD to edit triangle files. These tools smooth uneven surfaces, fill data gaps and add extra points in areas where only sparse data is collected.
 

The third approach enables the user to sketch onto the surface of a triangle file and use the resulting lines to create the geometry. This can be done by rotating or extruding a single line to create a surface, or by sketching two or more cross-sections and then flowing a surface between them. The solid model can then be completed with the wide range of filleting and blending options. These create consistent, smooth fillets and blends rather than sets of complex, free-form patches with inconsistent radii, the company says. 

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