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large threads

large threads

large threads

(OP)
i need to draw a part which is essentially 6 threads running along the axis of a large cylinder. I have the equations for the threads and the wrap angle(how far it goes round the cyliinder) could someone please help me. Simple help would be great.

RE: large threads

You have to create these threads with a Helix-based feature.  Look in SW Help for "helix" and that should get you on your way.

You should only have to model 1 thread, then revolve that feature around your cylinder for the other 5.

Ray Reynolds
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RE: large threads

Are the "threads" a contiguous part of the cylinder or are they going to be attached (bolted or welded) to the cylnder in an assembly?

Either way it sounds like you need to use a Sweep. There is a fair amount of good information in the Help files under "Sweep" and also in the On-line Tutorial in 3D Sketching & Revolves & Sweeps.

Basically you need to create the path of the sweep with a helix and a profile of the thread on a plane perpendicular to to the end of the helix. There is a section in the help files which relate specifically to the end conditions of the swept profile.

If the "thread" is to be a part in an assembly, model it seperately, add it to the assy, then create a Circular Pattern

from (the City of) Barrie, Ontario.

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