Extrude a curve along a surface
Extrude a curve along a surface
(OP)
Hi colleagues,
I have a specific question that is best explained by this screenshot in attachment. I want to do the following. I drew a closed curve on top of the skull surface. Now I want to extrude this closed curve along the Z-axis with the shape of the skull surface. So I want to draw 'a cap' on top of the skull, with a fixed height. I cannot extrude this closed curve, however I think what I want is fully constrained. Can someone help me for a workaround for this specific problem?
Kind regards,
Joachim
I have a specific question that is best explained by this screenshot in attachment. I want to do the following. I drew a closed curve on top of the skull surface. Now I want to extrude this closed curve along the Z-axis with the shape of the skull surface. So I want to draw 'a cap' on top of the skull, with a fixed height. I cannot extrude this closed curve, however I think what I want is fully constrained. Can someone help me for a workaround for this specific problem?
Kind regards,
Joachim





RE: Extrude a curve along a surface
On your screenshot you are in Sheet Metal, I would use Modelling.
Few methods I can think of depending on what you need:
- draw a straight line up, and then use "sweep along a guide"
- project the shape onto another plane, draw guides between the two shapes, and then create a "sweep" between the two
- or you could extract an associative copy of the surface, trim it to the curve, then use offset surface
You could create a simplified version of this and then try them out.
Regards, Carl
www.jcb.com
NX 8.5 with TC 8.3
RE: Extrude a curve along a surface
Many thanks for your advice. I have a new attachment =)
What I did now is the following:
- I made a intersection curve out of a plane parallel with the XZ-plane and the top of the skull.
- This intersection curve was projected than 'in the air' specifying the thickness of the cap I want.
- What I now hope to do is to put this cap on top of the skull with all the same thickness, so the top of the cap has the same shape as the top of the skull.
After your help, I think I am closer to the solution, but can you help a little bit further please?PS: Do you know how to change from the Sheet Metal to the Modelling view? I know that you can choose it in the beginning, but if you already started Sheet Metal (because of the skull) can you still 'downgrade' to Modelling?
Kind regards,
Joachim
RE: Extrude a curve along a surface
Don't worry about how to project curves onto the skull.
RE: Extrude a curve along a surface
What I did know is the following:
- Extrude the top face of the skull with a height of 20 mm (because my cap needs to be 20 mm in this case)
- Make an intersection curve of a plane (parallel with the XZ-plane) and the top face of the skull.
- Extrude this curve to a random height of 100 mm
The only thing I know wanted to do is make an intersection of this two extrudes in order to have exactly what I want, the cap!But I have an alert ( Trough face does not intersect path of the tool ) without knowing why, can someone help me out please?
RE: Extrude a curve along a surface
But just to contribute to this forum, I show in attachment my intersection step and result.
THANK YOU GUYS! =D
RE: Extrude a curve along a surface
Sorry for the delay, time differences!
Looks like you managed to switch into modelling, and also get where you wanted.
Good stuff, Carl
www.jcb.com
NX 8.5 with TC 8.3
RE: Extrude a curve along a surface
Regards,
Tomas
RE: Extrude a curve along a surface
Thank you for the additional advice. But how to switch in my case from Sheet Metal to Modeling? I think I don't know how to do it? Can you please help me out?
Kind regards,
Joachim
RE: Extrude a curve along a surface
www.nxjournaling.com
RE: Extrude a curve along a surface
as well as Ctrl+Shift+D for drafting.
Regards,
Tomas
RE: Extrude a curve along a surface
Thank you for helping me out guys!