Use curve as trajectory

[phoxeoy]

Am I missing something here? I created a helical datum curve using calculations and everything looks fine but when I go to create a swept protrusion Pro wont let me use the damn curve I just created. What good is a curve if you can't use it! Can anybody help me out here?

 

[coolntn1]

What I've had to do is:


1. Create a helical swept surface. Insert, Helical Sweep, Surface. For my section I just created a single line and it sweeps. So now I have a swept looking flat ribbon if you will.


2. I select the inside edge or the edge that represents my intent.


3. I copy it, then paste it back as a curve. At this point I can then use the curve as a regular sweep trajectory.


This is my work-around.


I'd be interested in others techniques to the original question posed, and why it says the helical curve trajectory is invalid.
Edited by: coolntn1

 

[phoxeoy]

I was able to use the helical curve only if I use a variable section sweep. I think the name of this feature is a little misleading. I don't have a variable section; I have a variable trajectory. If it works for both, which I found does, then it should have a better description.


ProEngineer should change there name to ProWorkAround because there are more "Work Arounds" than valid features.

 

[Brian_Adkins]

Depends on how you created the curve. Instead of using a swept protrusion, use a swept blend instead..just make the two sections (start and end) identical.


Here's a link to the 'rules' for using curves for sweeps:
http://www.proecentral.com/portal/forum/msgDetail.asp?msg_id =2274&for_id=15


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