Rotate extrude along sweep path axis! (wire rope)

Barry_van_Wijk

Hi,

I have made a wire rope wich follow a spline/sweep function.
But the rope must twist along the sweep axis.
In a straight line I get it done with the helix function, but not with the bend (sp)line in the sweep function.
You can see in the example that i am using a FS to make a helix accros the sweeppath,
but that is not the way because it uses the helix path to sweep and not the origin sweep axis.

Anyone who can help?
Thank you!

Here my link!
https://cad.onshape.com/documents/6088391b27f54bc92a939687/w/9c2908d2bfa312418b5418e7/e/4a1390c7ab67553ca8f90f63

mahir

It took some doing, but here's my take using a loft with 2 guide curves. The guide curves were created via the Contour Spiral FS.

https://cad.onshape.com/documents/57acdfaae4b005c413ed9b6f/w/3fd585a46d3af1b3ba413c53/e/2bddac9efd1a90c88eb02452

NeilCooke

You could try this custom feature:
https://forum.onshape.com/discussion/comment/64266#Comment_64266

Barry_van_Wijk

Thank you Neil, I have checked it, but again, the profile is rotating around the created helix.
I juist want a rotation in my sweep profile/path.
Or in other words, that the sweep is going to be rotating along the major/sweep axis.
Or just don't get it? I hope i'm clear!

mahir

@Barry_van_Wijk
You can use the spiral FS above to create a curve that rotates around your main sweep path. That curve can then be used as a guide curve, which will rotate your profile sketch as it follows the main sweep path. I believe that's exactly what you're looking for.

Barry_van_Wijk

I get insecure because I can't get it done and I'm afraid to look stupid.
But still I ask the question one more time, with a new picture to point out:



As example I want to rotate the highlighted profile along the highlighted axis with a specific rotation/pitch.
With the above mentioned FS i don't get it done... Help?

NeilCooke

I don’t think it is possible with one profile like you have. You may have to create multiple spiral curves and sweep each strand. 

mahir

It took some doing, but here's my take using a loft with 2 guide curves. The guide curves were created via the Contour Spiral FS.

https://cad.onshape.com/documents/57acdfaae4b005c413ed9b6f/w/3fd585a46d3af1b3ba413c53/e/2bddac9efd1a90c88eb02452

Barry_van_Wijk

Thank you that works for me!

Barry_van_Wijk

maybe nice to see the result