Auger Tutorial: TCPRO 10.51 first created 14/06/06 - last modified 14/06/06 Page Author: Ty Harness

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Drawing a simple auger with TurboCAD:

Figure XX - Auger Blade

Draw a centre line. This will be used to rotate the profile to produce an annulus. Draw the rectangulur blade cross section. Note you can have any profile shape but make sure it's a closed pline - use modify joinlines command if needed.

Figure 1 - Blade profile and rotation line

View the drawing in isometric and ensure you have toggled into 3D mode. (RB on the desktop and you should see selector 3D props - if not then Toggle 3D)

Insert 3D object and choose Revolve

select the rectangle and then right button and finish selecting.

Use the SEKE V to snap the each end of the rotation line we drew earlier.

Figure XX - Rotation produces an annulus

RB on the annulus and choose properties

Then select revolution shape

I've chosen smooth - 360Deg and 300mm Pitch

These setting take some playing about with - I like to do just one turn and copy as many as I need.

Figure XX - Spiral Blade

Figure XX - Spiral Blades

You can use the same technique for many applications. The classic tutorial is the 3D chess piece. I've used it for spiral staircases and helical strings etc.