Complicated curve in two planes plus taper

[Anonymous]

I need to produce a pair of cart shafts which curve in two planes, start off square for about half the length and finish round and taper at the end.. I attach a similar drawing but it does not show the taper.. The top drawing is the top profile, the lower one the side profile. I am not concerned with the dimensions. The start of the shafts is on the left.

[laughingcreek]

maybe the attached will give you some ideas.  sketch 4 is produced using "project-intersecting curves", with the first 2 sketches as the input.

it's usually better from a curvature quality  standpoint to use surfaces to produce these types of curves, but that's a more difficult workflow to demonstrate, and I think intersecting curves work fine in this particular instance.

[TrippyLighting]

---

@laughingcreek wrote:

...I think intersecting curves work fine in this particular instance.

---

I agree with that!

---

@laughingcreek wrote:

.. but that's a more difficult workflow to demonstrate...

---

I don't necessarily agree with that. We've just grown comfortable with a workflow that doesn't make any sense e to normal people AKA non-Fuiosn 360 users 🙂

In order to get an intersection curve, which usually curves through 3D space you first have to pick a plane to start the sketch on. Intuitively that does not make any sense, because the intersected result isn't going to coincide with any plane.

[Anonymous]

Thank you for the reply. I am a newbie to Fusion 360 and CAD but after a bit of thought and a text book I have managed to produce a shaft. It needs fine tuning but I will get there.