sheet metal funnel

[sourkraut]

Hi,
I have a part that I have designed as a solid part using the swept blend tool. The part is a square 422mm X 422mm that transitions into a 122m diameter hole. The distance between square and hole is 150mm.
So it is a funnel that goes from a square to a circle.

It was constructed originally as a solid and then the shell tool was used.

The current problem is that I would like to turn it into a sheet metal part and have calculations for the flat part done by Pro e.

The collar around the round part can be separate and welded on afterward.

I am not sure where to start, I have not used the sheet metal feature before.

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any known tutorials would be great to on the sheet metal feature!
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Thanks in advance

 

[davidinindy]

I couldn't open your file. What version of Pro-E was it created in?

David

 

[sourkraut]

WF4
attached is a .jpg
I was able to create the part in sheet metal now, but i still can not get it to unfold.

thanks for the reply

 

[davidinindy]

I don't think that would even be made using bending. Looks more like a stamping to me.
To bend it, you'll have to add a rip somewhere for a weld seam.
I haven't had much look doing anything besides standard straight bends in Pro-E's sheetmetal application.

David

 

[jeff4136]

First things first:
Learn what developable and nondevelopable surfaces are.
Then learn how to model them and how to analyse for them.
Search terms: [ developable gaussian ].

There are different ways to model that type of shape and quite a few models
floating around you can examine. Experiment with the different methods.
You should be able to find one that satisfies your intent.
Search terms:
[ pro/engineer sheetmetal | "sheet metal" square | rectangle | rectangular ...
... round transition flat | "flat pattern" ] should turn up a few leads.

Some good sheetmetal related resources:

http://www.cod.edu/people/faculty/wielgos/shtml/cadd275.pdf

http://www.proe.cn/sheetmetal/z99/SHEETMETAL_WF2.pdf

http://www.cad-resources.com/Pro-Sheetmetal-LESSON.pdf

http://www-mdp.eng.cam.ac.uk/CD/engapps/proe/sheet_metal_hints.pdf

(hope they're all still good links)

The pic'd part can be found at

http://www.mcadcentral.com/proe/forum/forum_posts.asp?TID=32460

(There are at least half a dozen example models posted on that site if you'll dig.)

-Jeff Howard (wf2)
Sure it's true. I saw it on the internet.