Gerald Davis Design and Consulting

Gerald Davis

Contributing Writer
Gerald Davis Design and Consulting

Getting swept away in 3-D CAD modeling

April 1, 2009

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Like an extrude or revolve, a sweep is a tool for modeling a 3-D shape. A sweep consists of three basic elements--a profile, a path, and a set of rules for "sweeping" the profile along the path. A sweep can be a powerful tool when modeling 3-D shapes, according to columnist Gerald Davis.

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circle precision

Modeling in a 3-D CAD system

March 1, 2009

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Among the tools in the 3-D CAD toolkit—extrudes, revolves, sweeps, and lofts—the first two can be used to create identical parts, but they don't work the same way. Depending on which process you choose, the time the computer needs to model and rebuild the part can vary substantially.

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 Precision molded dimensions figure 1

Dimensioning in a 3-D CAD system

February 1, 2009

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Columnist Gerald Davis explains that preparing a 3-D CAD model without dimensions may look great, but it doesn't really do anybody any good. For example, a 3-D CAD model with dimensions helps quality control inspectors.

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Sketching in a 3-D CAD System

January 1, 2009

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Columnist Gerald Davis describes different approaches to sketching in a 3-D environment.

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The real world of 3-D CAD assemblies

December 1, 2008

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Columnist Gerald Davis describes the benefits of working with 3-D CAD assemblies.

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3-D CAD drawings in a 2-D world

November 1, 2008

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Columnist Gerald Davis discusses the importance of delivering a clear illustration and how it can make an impact on the final fabricated product.

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Thinking inside the box

October 1, 2008

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Columnist Gerald Davis delves into why top-down design might be useful when modeling a metal fabrication in 3-D CAD.

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3-D CAD strengthens customer bond

September 1, 2008

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Columnist Gerald Davis asks his fabricating readers if they know what it truly takes to keep up a fully functioning 3-D CAD software system.

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One easy piece to model

August 1, 2008

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Columnist Gerald Davis believes it's a shame when a shop doesn't use its 3-D CAD software to its fullest potential. That's why he takes the reader through a modeling tutorial.

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3-D CAD Modeling Figure 1a

Getting a handle on 3-D CAD modeling

July 1, 2008

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Columnist Gerald Davis provides the reader with a brief overview of some of the handy 3-D CAD tools he uses when doing basic modeling techniques.

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Unfolding truth about flats

June 1, 2008

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Columnist Gerald Davis reveals the usefulness of unfolding parts on the computer screen.

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Machined-part modeling in 3-D CAD

May 1, 2008

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Columnist Gerald Davis guides the reader through the 3-D design of a coupling that needs to be machined. He starts off with a bad example of how to do it and works his way toward a much better process.

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3D CAD modeling of sheet metal parts

April 1, 2008

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The main variation in sheet metal modeling technique is when to let the 3D CAD system know that the part is to be treated as sheet metal. Columnist Gerald Davis walks us through three different ways to accomplish this.

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What CNC programmers wish you knew

March 1, 2008

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State-of-the-art CNC programming systems speed the first stage of CNC programming by allowing the programmer to import CAD models to define the geometry of the part. That's just the first part, however. To really speed up the design phase, CAD programmers should keep several tips in mind.

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Essential CAD: A starting point

January 1, 2008

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Before a company purchases a CAD software package, the management team should start with a list of priorities that it expects the software to address. Of course, these priorities should be tailored to the company's mission. It's also important to keep in mind some of the basics of the virtual design world before the actual purchase takes place.

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