creo 2 sweep problem

[ahuderek]

Hi guys I'm trying to sweep pipe in trajectory like in the picture but I't doesn't work. It shows: "Select any number of chains as trajectories to drag."
Idk what to do, maybe I'm doing something wrong. Imake a trajectory  like in yt tourial Pipe using intersection in Creo 2.0 - YouTube but it doesnt work. Can someone help me with that?

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[kdirth]

Appears you have a couple of sharp bend in your trajectory.  The trajectory need to be tangent through out.  A small radius will also cause problems with larger diameter pipes.

[ahuderek]

actually i cannot sketch any type of pipe...

[ahuderek]

it need to looks like https://www.google.pl/search?q=rundbalenzange&espv=2&biw=1745&bih=868&source=lnms&tbm=isch&sa=X&ei=nNhAVea7CsmRsgHczYHwCA&ved=0CAcQ_AUoAg#imgrc=TvMsYdBF-ztI7M%253A%3BBiWSGsXb6Zq5fM%3Bhttp%253A%252F%252Fstatic.landwirt.com%252F166-Weidemann_Rundballenzange-673976-0.jpg%3Bhttp%253A%252F%252Fwww.landwi...

[ahuderek]

it should looks like https://www.google.pl/search?q=rundbalenzange&espv=2&biw=1745&bih=868&source=lnms&tbm=isch&sa=X&ei=nNhAVea7CsmRsgHczYHwCA&ved=0CAcQ_AUoAg#imgrc=TvMsYdBF-ztI7M%253A%3BBiWSGsXb6Zq5fM%3Bhttp%253A%252F%252Fstatic.landwirt.com%252F166-Weidemann_Rundballenzange-673976-0.jpg%3Bhttp%253A%252F%252Fwww.landwi...

[kdirth]

I assume you are trying for this:

Have you clicked on the sketch icon and created the cross section? 

[ahuderek]

yep but It doesn't work. I did this in that way: I sketch one side on FRONT and extrude drawing with sufrace to my dimension and then sketch letter U on the TOP and then I clicked intersect. But the better way to do that was your way. Devide pipe in a half . Do like guy in a movie and then simply make mirror. Thanks a lot Kevin for your help

[daraneda]

you must first give sufficient radius in the sketch to make the sweep, otherwise you will not sweep you need (being a tube you want to perform).

[kdirth]

I now see your problem.  You are following a tutorial for a varied cross section and have selected the button for that.  You need to create a constant cross section by selecting the other button.

It should extrude for you, but will have a sharp corner with the sharp bend in your sketch.

[kdirth]

A sharp bend will extrude, but a radius smaller than the external radius of the cross section will not.