Create Helix on a Bent Tube

[TheeCircle]

Hi,

I need to draw a helix on the OD of a bent tube. In the end I need a cooling line that spirals around the OD of the bent tube.

Can I do this with NX?

Thank you

John

 

[SvenBom]

Would something like the attached model help?
Part was creted in Nx7.5.

 

[TheeCircle]

Hi Sven,

Yes similar to that only I need to make mine follow a 90 degree bend.

Could you let me know how you did that?

Thank you

John

 

[SvenBom]

I guess that guide curve for your bent tube is already created. Otherwise, you will have to draw some lines and arcs.

Here is how my model was done:
1. sketch 000 represents the guide curve for the tube
2. sketch 001 is drawn on the plane, that is placed on the curve with 'normal to path' option. In this sketch, there is only one line.
3. in swept command, select this one line as Section. And select the bend curve as guide curve. Than change the Orientation Method to Angular Law. Select also Linear option for Law Type. Start angle is 0, end angle is 360*20. This means, that there will be 20 rotations around this guide curve.
4. click OK and swept surface is created.
5. now, you can create a curve from the edge of the surface as I did (composite curve). But it is not necessary. You can just place the new tube on this edge.

I hope that this description will help.

 

[JohnRBaker]

What version of NX are you running?

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[TheeCircle]

Hi John,

I am using NX8.5.

Thanks

John

 

[stThree]

Just pick "along spine" for the type when creating your helix and select a sketch of your path. See attached movie

Steve
NX 8.5.3.3

 

[JohnRBaker]

Yes, that's what I would recommend, as was done with the attached model.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[TheeCircle]

Hi Steve,

That was awesome!!

Thanks guys!!!

John