Helical sweep on shaft

[rmuller]

Hi, I need to creat helical sweep like on the picture below on the left.

I am able to do half of it but not sure how to turn its direction back. I tried to mirror the sweep but it creates sharp corner in the middle and that is not at all suitable for cam follower. I need it to turn back following an ellipse. If that makes sense.

If anybody would be able to help me I would very much appreciate it.

Thanks,Radek.

[TomU · Accepted solution]

Take a look at these other similar discussions:

Modeling a globoidal cam

Barrel Cam Modeling

[rmuller]

Thank you. Didnt know the correct term for the shape 🙂 

[TomU]

And this one:  https://community.ptc.com/t5/Part-Modeling/Barrel-Cam/m-p/489991