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CAD tip CAD tip # 6537:

   
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Q - question

How to model a 3D thread (screw) in AutoCAD?

A - answer Although 3D threads (nut/bold) are usually not modelled in detail and CAD applications like Inventor have internal functions for representing threads, sometimes you may need to really model a true 3D thread in AutoCAD.

The easiest way is to use a combination of the HELIX and SWEEP modelling commands.

First prepare a profile of a single thread (e.g. a filleted triangle), 3DROTATE it to be perpendicular to the sweep path, and then sweep this profile along a 3D spiral created by the Helix command.

In older versions of AutoCAD you can also use the 3DSPIRAL Lisp utility (see the Download section).

You can also use of the threaded blocks in our CAD blocks library.

ACAD
100% *  CAD 
13.2.2009    30137×  
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applies to: AutoCAD ·

See also:
Tip 12962:True 3D models of threads in Inventor 2022 and 2021.
Tip 12961:Bolt-nut constraint/joint in Fusion 360.
Tip 12255:How to change the number of CPUs used in Nastran for analyses?
Tip 12127:AutoCAD slower after obeying the recommendation from DELL Precision Optimizer.
Tip 12075:How to display a temporary iLogic message, just for a couple of seconds?


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