Best way to draw

[skaboy607]

Hi,

I have drawn the shape below.

http://i423.photobucket.com/albums/pp315/skaboy607/Uni/heat_exchanger_halfinch_2.jpg

I drew it using the line tool and then applying the desired radius I require of 38.1 mm. I then used the 'tube' tool to create the shape with required inner and outer diameters I require.

The inner and outer radius' are smaller and larger respectively. How can I create shape that has my desired radius but on the internal bend?

Thanks a lot

 

[JohnRBaker]

First, I hope you created a Sketch of the path of the tube and not just a bunch of lines and arcs since editing the sketch would be much easier.

That aside, I'm not sure exactly what it is that you're asking for. Are you trying to get the inside bend radius of the tubes to be 38.1 mm?

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

UG/NX Museum:

http://www.plmworld.org/p/cm/ld/fid=209

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

 

[skaboy607]

Er I think I created a sketch, all the lines are within the same sketch if thats what you mean.

Yes, that's exactly what I want.

 

[JohnRBaker]

Well, just go back to your sketch and edit the radius of the corners of the path of the tube by ADDING the value representing the radius of the outside of the tube to the 38.1 mm value.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

UG/NX Museum:

http://www.plmworld.org/p/cm/ld/fid=209

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

 

[SDETERS]

Could you set up an expression that keeps that inside radius constant when you change the tube od?

 

[JohnRBaker]

That would be the only way to keep them related since the sketch cannot use an expression created when the tube was defined.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA

http://www.siemens.com/plm

UG/NX Museum:

http://www.plmworld.org/p/cm/ld/fid=209

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

 

[mmauldin]

Maybe something like this? The blend radii in the sketch are controlled by a combination of the desired inside bend radius and the tube OD.