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CAD tip CAD tip # 8854:

Question CAD 
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Q - question

How to create a 3D paraboloid in AutoCAD?

A - answer To construct a paraboloid of revolution (a quadric) you can use revolving of a parabolic curve.

First draw the creating curve of parabola (resp. a half of parabola) - you can use the LISP utility Parabola (see www.cadstudio.cz/download). Add the axis (line) a break the curve in half using the axis and the BREAK command.

Now revolve the parabolic curve around the axis with the REVOLVE command, use the angle of 360°. The result is a parabolic 3D surface, e.g. a dish of a satellite antenna, a reflector case, etc.:

Paraboloid

ACAD
100% *  CAD 
14.10.2012    6567x  
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applies to: AutoCAD ·

See also:
Tip 9743:How to use XY coordinates from Excel as polyline vertices in AutoCAD?
Tip 8884:Sinusoid, hypotrochoid, guilloche and other parametric curves in AutoCAD.


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