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Why does this sweep twist?

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Message 1 of 21
samu3
4468 Views, 20 Replies

Why does this sweep twist?

Hi All,

 

Can someone please take a look at the attached file. It was created using Inventor 2013.

 

Looking down from "Front" view, the end where the sweep starts is as it should be: the sidewalls of the rectangular sweep are straight up and down, with zero degree angle from z-axis.

 

The other end of the sweep though, the sidewalls have twisted slightly and have a 0.53 degree angle to z-axis, but I need them to be straight up and down.

 

What is causing this and how do I fix it?

 

Thanks in advance,

Samu

 

 

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20 REPLIES 20
Message 21 of 21
ic198
in reply to: JDMather

This is close- I have used a lofted surface with vertical profiles (perpendicular to path) at both ends as my sweep guide. The end condition is right and the cross section remains square but it has rolled slightly at the arbitary split point. I suppose I could add more vertical profiles to my lofted surface but there must be an easier way...

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