VX CAD/CAM v10: all-in-one CAD/CAM package

CADalyst, Oct, 2004 by Don LaCourse

VX CAD/CAM is known for its ability to import and heal advanced surface data from other 3D CAD applications, a fact that has helped it find a niche in industrial design, mold making, and CAM applications in particular. Version 10 builds on this foundation with new global shape deformation (morphing) tools, new point cloud tools, standard parts and mold base libraries, and many enhancements to the VX CAM application.

VX CAD/CAM is a hybrid mechanical CAD application built on the proprietary VX modeling kernel. Hybrid means the product supports integrated advanced surface and solid modeling tools, and has done so since it was first introduced in 1999. VX CAD/CAM is the flagship product from VX Corp., a developer of 3D MCAD tools since 1985.

New Modeling Tools

Version 10 includes some interesting new modeling (figure 1) and editing tools. The most exciting is a series of Morph Shape (global shape deformation) commands that let you deform any shape (open or closed) by controlled warping of face geometry (figure 2).

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The commands let you grab a point, edge, or curve on any face and move (or drag) it to deform the original shape (figures 3a-3e, p. 30). This change is an historical operation, meaning you can parametrically edit it later in the design. The deformation spans seams of multiple surfaces.

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Like many VX commands, this one provides a number of ways to control how a deformation proceeds (such as along direction, along path, to point, and about axis), what surfaces are locked, which ones can move, and other things that affect the shape of the deformation. The range of deformations possible with these tools is quite impressive. Another area where VX CAD/CAM excels is reverse engineering using scan data from 3D scanning and CMM (coordinate measuring machines) devices such as Romer CimCore (www.romer.com) and MicroScribe (www.immersion.com). Version 10's ScanShape tools are significantly expanded (figure 4). With them you can section scan data to fit surfaces through smaller subsections. VX reports significant speed enhancements to the overall process and the ability to handle 360[degrees] scan data.

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Many modeling commands are enhanced. The Bi-rail Loft now supports rails from a cylinder or cone, and the FEM Patch lets you orient surface direction (figure 5). It recreates fillets after draft is applied and automatically identifies all holes associated with an imported face.

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The Morph Shape commands are not unique in the industry. They're similar to the Global Shape and Zone Modeling commands in think3's thinkdesign and the Blue Dot/Blue Surf commands in Solid Edge. They are however, very easy to use considering the number of options available.

VX CAD/CAM's ScanShape commands are unique to the suite of midrange mechanical applications available today. To date, I haven't reviewed any other product with similar tools or the ability to achieve what VX CAD/CAM can do with these commands. It's very impressive.

New Part Library Tools

A continuing trend in today's mechanical CAD applications is the integration of tools that were once third-party applications. VX CAD/CAM v10 now ships with built-in parametric libraries for mold and die designers that include complete mold base assemblies and standard components (figure 6, p. 32).

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These are welcome tools. The mold base library comes with everything you need, but the selection is limited to DME Series A and B mold bases. The company indicates that it will add HASCO mold bases to the library soon.

2D Layout and Drafting

VX CAD/CAM contains a complete drafting environment that you can use to create detailed layouts of your 3D models. A bonus is the ability to detail both open surface and closed solid models in a similar manner, without limitations.

Version 10 adds some new 2D functionalities worth mentioning. Hidden-line creation is faster--the company notes a 10X improvement in creating complex hidden-line views. Also new are an option for creating Bent Section views (figure 7), a Do Not Section attribute, a weld symbol generator, and controls that synchronize layer use between the model and the drawing.

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Machining with VX CAM

Earlier in my career I spent two years as mold designer--a stark contrast to my previous ten years as a product designer. The hours were long. I had to work with 3D part data from many different CAD systems, pump out multiple mold designs at the same time, and send that data directly to the CAM operators on the shop floor.

You're going to be hard-pressed to find a good midrange mechanical CAD application with integrated CAM capability. VX CAM, with 2.5- to 5-axis tool path capabilities should contain everything you need to satisfy folks on the shop floor (figure 8, p. 34).

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Version 10 extends the CAM module further with a new 5-axis side cut operation, multiface chamfering, toolpath transformations (arrays), CAM sketching, boosted performance during solid verification, and a native VX postprocessor.