Inventor General Discussion

Inventor General Discussion

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Contributor
nmetzger
Posts: 24
Registered: ‎08-24-2012
Message 1 of 8 (2,182 Views)

inventor 2012 Unfold sheet metal

2182 Views, 7 Replies
09-12-2012 05:36 AM

I have never used the unfold command before. It seemed simple enough, draw the part, extrude, turn into sheet metal, set defaults and unfold to make a flat pattern. What am I doing wrong? It will not let me unfold. The dialog box comes up, but will not allow me to pick a flat surface or bends....

 

*Expert Elite*
JDMather
Posts: 28,246
Registered: ‎04-20-2006
Message 2 of 8 (2,178 Views)

Re: inventor 2012 Unfold sheet metal

09-12-2012 05:42 AM in reply to: nmetzger

First thing you are doing wrong is using Extrude rather than one of the sheet metal tools.

Extrude is probably fine as long as you follow sheet metal rules (constant thickness, bends and rips).

 

Second possible mistake is you haven't set your sheet metal style to the same thickness as your extrusion, but you say you have set the defaults - so maybe we can rule that one out.

 

I'm betting constant thickness or missing bends.

 

Actually Unfold is not how you create a Flat Pattern.

Unfold/Refold is used to add features that are difficult to do in a folded state.

Create Flat Pattern is for, well, creating flat patterns.

 

Attach the file here and erase all doubt.

Please mark this response as "Accept as Solution" if it answers your question.
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Contributor
nmetzger
Posts: 24
Registered: ‎08-24-2012
Message 3 of 8 (2,170 Views)

Re: inventor 2012 Unfold sheet metal

09-12-2012 05:53 AM in reply to: JDMather

I drew this part in Inventor 2012 and extruded. Set material default to mild steel. Default K factor. Material thickness is .1875, but I believe it defaulted to .2 - not sure why it would not let me change that.

 

 

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JDMather
Posts: 28,246
Registered: ‎04-20-2006
Message 4 of 8 (2,167 Views)

Re: inventor 2012 Unfold sheet metal

09-12-2012 06:00 AM in reply to: nmetzger

nmetzger wrote:
 Material thickness is .1875, but I believe it defaulted to .2 - not sure why it would not let me change that.


Did you figure out how to change it?
Did you get this figured out?

Attach the file here.

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2015 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015-SP1 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
Employee
johnsonshiue
Posts: 2,345
Registered: ‎04-30-2008
Message 5 of 8 (2,130 Views)

Re: inventor 2012 Unfold sheet metal

09-12-2012 03:03 PM in reply to: nmetzger

Hi! To change the thickness, simply go to Sheet Metal Defaults -> either click on the pencil button at the top or uncheck "Use Thickness from Rule."

To create a successful unfold feature, the sheet metal body thickness has to be consistent with the setting. Please let me know if it works for you. If not, please attach the file here or send it to me.

Thanks!

 



Johnson Shiue (johnson.shiue@autodesk.com)
Senior Principal SQA Engineer, Inventor
Mechanical Design
Autodesk, Inc.

Member
tmiddendorf
Posts: 4
Registered: ‎09-13-2012
Message 6 of 8 (2,104 Views)

Re: inventor 2012 Unfold sheet metal

09-13-2012 08:09 AM in reply to: nmetzger

If you tell Sheet Metal Defaults that the thickness is .062 and the model thickness is .06200005, the model will not unfold.The thickness of the material in Sheet Metal Defaults must match the thickness of the model exactly. The only way to ensure this is to uncheck "use thickness from rule", delete the thickness, click the arrow, click the measure command, and click any thickness line on the model. The true thickness should appear in the box and you can now smash that sucker flat.

Regards,

Tomas

Contributor
nmetzger
Posts: 24
Registered: ‎08-24-2012
Message 7 of 8 (2,103 Views)

Re: inventor 2012 Unfold sheet metal

09-13-2012 08:13 AM in reply to: tmiddendorf
Thanks! That helped! Nichole Metzger Manufacturing Engineer Valco Industries 625 Burt Street Springfield, Ohio 45505 937-399-7400
Active Member
mhalkovic
Posts: 9
Registered: ‎04-15-2010
Message 8 of 8 (762 Views)

Re: inventor 2012 Unfold sheet metal

04-23-2014 02:31 PM in reply to: tmiddendorf

Thanks Tomas,

 

I had a problem in Inventor 2014, couldnt flatten ther part which was imported to Inventor from Solidworks and thought that Im doing something wronduring  importing proccess, but it turned out the thickness wasn not accurate, so as soon as I applied the thickness from measurement as you advice here the part flattened perfectly.

 

Thanks again.

 

Magda

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