How can I do this?

[JTDillard]

I have this drawing of a part I need to make a model of. I have the revolved part completed which is the bore and OD taper. I am not sure how to make the swept features on the outside that follow the tapered at a helix and taper down as they go around. I someone could please help I would really appreciate it.

Thank you,
JT

 

[JTDillard]

Here is the model i have done so far.

 

[hydromech]

I'd do the cylinder first...

Then put a draft on it...

Then put the helix on...

Then put the rounds on.

It seems quite straight forward.

 

[vc66]

It's not really straight forward, as the helix must follow the taper properly. I second Fawkes. You need to create the mathematical equation for the tapered helix. Once that's done, you should be able to sweep a section along the curve.

V

 

[jeff4136]

If the helical feature is tapered a Helical Sweep feature should fill the bill (see Help for a tapered example), but it looks to me like the helical feature in the drawing is constant diameter.

(If a "true" representation is required there are other nuances that should be considered. Similar to cutting a helical groove, simply sweeping a planar section probably won't bring home the trophy.)

 

[hydromech]

If the helix is straight or tapered it make no difference.

Making it tapered can be as easy as adding a revolved cut at the end.