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mattBA
Posts: 10
Registered: ‎10-01-2008
Message 1 of 10 (641 Views)

Sheet Metal Cone

641 Views, 9 Replies
01-07-2009 07:45 PM
Is it possible to make a cone with sheet metal that can be unfolded?
*Dennis Jeffrey
Message 2 of 10 (641 Views)

Re: Sheet Metal Cone

01-07-2009 08:16 PM in reply to: mattBA

Yes. Post what you have and the version used.


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mattBA
Posts: 10
Registered: ‎10-01-2008
Message 3 of 10 (641 Views)

Re: Sheet Metal Cone

01-08-2009 12:39 PM in reply to: mattBA
I have attached a AI 2009 part file of what I want flattened. I thought I would be able to use contour flange but wasn't able make it work. What I ended up doing was using extrude and then shelling it but when I pressed flat pattern it gave an error about the thickness. Somehow I have to use face to get the sheet metal properties. I just don't know how.
Any advice would be nice.
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mcgyvr
Posts: 6,751
Registered: ‎12-01-2004
Message 4 of 10 (641 Views)

Re: Sheet Metal Cone

01-08-2009 01:46 PM in reply to: mattBA
Press the "sheet metal defaults" button, (uncheck use thickness from rule if its checked) set thickness to .0478 and click okay.

Then select (highlight) the inside surface of your cone and press the flat pattern button..
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JDMather
Posts: 26,355
Registered: ‎04-20-2006
Message 5 of 10 (641 Views)

Re: Sheet Metal Cone

01-08-2009 02:11 PM in reply to: mattBA
I noticed that Sketch1 is placed at the origin but not constrained to the origin. If you would set Inventor up correctly it would have been automatically constrained.
Shell does not result in the correct sheet metal flat pattern. Although it will flatten if set the thickness correctly - go to wireframe mode and examine top and bottom of flat pattern. You will see edges are not cut perpendicular to flat.
Sketch2 is not needed - you could have used the YZ plane to Sculpt or Split the part.
In fact you could have simply sketched an angled line and revolved a surface 180°.
Then Thicken to get the correct part.
Please mark this response as "Accept as Solution" if it answers your question.
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Active Member
jcbyrne2
Posts: 7
Registered: ‎10-28-2007
Message 6 of 10 (641 Views)

Re: Sheet Metal Cone

01-10-2009 03:14 PM in reply to: mattBA
when you shelled the solid the top and bottom edges were not square to the sides. Inventor may have had a problem with this. A slanted line rotated around an axis as a surface and thickened might be tried . A tilted rectangle using three point rec and rotated around an axis may also work. Highlighting one surface before flatten command will sometimes help.
*Dennis Jeffrey
Message 7 of 10 (641 Views)

Re: Sheet Metal Cone

01-10-2009 05:33 PM in reply to: mattBA

Here is the proper SM part. Note that I did not change or
repair your geometry. You need to follow JD's advice on fulluy dimensioning -
contraining - anchoring all geometry in you sketches - every time. This is just
good practice to avoid downstream editing issues.

 

Go through the steps in the browser with the eop to see how I
did it....
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*Dennis Jeffrey
Message 8 of 10 (641 Views)

Re: Sheet Metal Cone

01-10-2009 05:34 PM in reply to: mattBA

No need. See my last post.


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idragonb
Posts: 38
Registered: ‎11-28-2012
Message 9 of 10 (247 Views)

Re: Sheet Metal Cone

09-08-2013 07:04 AM in reply to: mattBA

I understand this an old listing, but I did a revolution and rip which reported a problem - just wanted to point out that you can solve this by increasing distance from center and then you can rip...

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JDMather
Posts: 26,355
Registered: ‎04-20-2006
Message 10 of 10 (243 Views)

Re: Sheet Metal Cone

09-08-2013 07:58 AM in reply to: idragonb

idragonb wrote:

I understand this an old listing, but I did a revolution and rip which reported a problem - just wanted to point out that you can solve this by increasing distance from center and then you can rip...


I don't understand the problem or solution - can you attach the ipt file here?

Please mark this response as "Accept as Solution" if it answers your question.
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