sviluppo tube problem

[marco_180]

Bye to all,
I have to be able to develop a tube, which is rectangular and ends round.
I read all posts on the stilts (seen that it is very similar), I have been of help, but at the time when I ask inventor to develop the fold I only recreate the 3d!

I also tried to use the program that some of you indicated in a post, but it kicks me all the external measures!

Can you tell me where I'm wrong?

I'll attach the file "incriminate"!
use inventor 2009.

Thank you so much to all!

 

[Tarkus]

Bye to all,
I have to be able to develop a tube, which is rectangular and ends round.
I read all posts on the stilts (seen that it is very similar), I have been of help, but at the time when I ask inventor to develop the fold I only recreate the 3d!

I also tried to use the program that some of you indicated in a post, but it kicks me all the external measures!

Can you tell me where I'm wrong?

I'll attach the file "incriminate"!
use inventor 2009.

Thank you so much to all!

your model is not correct:
The divisions of the big mouth sketch are not the same, because you used a circle and then you made the loft, so the "triangular" faces free of folds, are no longer equal but are convex. To rusting to have a hopper with the releases before 2010, you have to draw the round mouth as it is in reality, i.e. a polygon with as many + sides as possible.
you will also have to return the same folds on the opposite corners of your hopper.
read the previous posts well and look at this: