Creating a conical extrusion

[amlsna]

I have a profile that I want the end to tmper down by 30%. The general shape of the feature is circular. I am trying to add the taper to the end. The feature is basically a thin walled tube with a 15% opening. I have tried the protrude with a draft, which isn't correct, and doesn't work. Any suggestions from the experts out there.
Thanks in advance.

 

[swertel]

Without seeing your actual geometry, here are a few things to try.

A) Extrude a cylinder, chamfer the one end, and then use thin wall.

B) If it has a cylindrical axis, create a revolved protrusion and have your taper built into the profile.

C) Try creating a loft.

One of the above 3 methods should work for you.

--Scott

For some pleasure reading, try FAQ731-376

 

[donyoung]

Hi,

another solution might be:

- sketch on x/z plane --> circle with OD of small side
- parallel plane to x/z plane with distance = tube length
- sketch on that new plane --> circle with OD of wide side
center should be that of small circle

- sketch on y/z plane --> line from mid small to mid big circle
(seen as vertical lines)

-- function --> swept surface
--> multiple path an cross sections

--> select the line that connects both circles
--> accept
--> NEXT
--> select both circles
--> preview
--> select open ends
--> finish

-- function --> Thicken
-- select the just created surface
--> key in the wall thicknes (distance)
--> direction --> either inward or outward
--> finish

-- possible --> hide all sketches/surfaces

drawback: the tube is somewhat 'bottle-shaped'

dy

 

[donyoung]

Hi,

a picture of the outcome little bit enhanced ;-)

 

[amlsna]

Greetings, you guys are right, hopefully this image will help you to see my area of confusion. I need to take the linear protrusion profile and then taper the end, but keep the two flats maintained. My image is what I have been able to do so far.