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Modeling features in a Sheet metal part.

Legend
Legend

Is there an easy way to accurately unfold a part that was constructed with a majority of sheet metal features, but has some swept flanges?

 

unfortunately, I cannot post a sample file publicly. I can possibly send it to GTAC as it's probably covered by NDA

Rob Newcomb, CAD/CNC/Simulation manager
Elmhirst Industries, Specializing in Prototype sheet metal stampings and assemblies

Production: NX 12.0.1 / Autoform r7 /WorkNC 2018 r2
Testing:nothing.
PC: Rave Cadbeast: Intel(R) i7-4790K CPU @ 4.GHz /32gb ram /NVIDIA Quadro P2000 on Win10 Pro
4 REPLIES

Re: Modeling features in a Sheet metal part.

Creator
Creator

Hi Rob,

 

it's difficult to recommend anything w/o knowing the shape. Maybe you can post a simplified example, reduced to the issue.

 

- You should always do a convert to sheetmetal after doing something in solid modeling.

- You can try to substitude the sweep with contour flange or advanced flange. Or lofted flange, but that's all looking in a crystal ball.

- You can try the one-step analyze formability or the surface flattening and forming

 

For flat pattern/unfolding of no-sheetmetal shapes: Easy AND accurately is something I've never heard in that context :-)

 

Thomas

Re: Modeling features in a Sheet metal part.

Siemens Phenom Siemens Phenom
Siemens Phenom

Hi Rob (@R_Newcomb,)

 

As Thomas (@bshkoerner) suggests, if you can post an example of the problem we could look a little further.

 

One thing to note is that in NX11, Convert to Sheet Metal was enhanced to allow selection of additional bends that you want NX to treat as a complex non-linear bend.  This is not a foolproof solution however may be enough for your purpose?

2017-07-24 08_13_33-NX 12.0.0.24 - Sheet Metal.jpg

 

thanks

 

Dave.

Re: Modeling features in a Sheet metal part.

Legend
Legend

Thanks, I'll take a look at that additional geometry.snip.PNG

 

it looks like they modeled a flange then swept it.

 

 

Rob Newcomb, CAD/CNC/Simulation manager
Elmhirst Industries, Specializing in Prototype sheet metal stampings and assemblies

Production: NX 12.0.1 / Autoform r7 /WorkNC 2018 r2
Testing:nothing.
PC: Rave Cadbeast: Intel(R) i7-4790K CPU @ 4.GHz /32gb ram /NVIDIA Quadro P2000 on Win10 Pro

Re: Modeling features in a Sheet metal part.

Siemens Phenom Siemens Phenom
Siemens Phenom

HI Rob,

Ah, that geometry would not be supported by the sheet metal application I'm afraid.  Running a flange like that around an edge that traverses different planes is a current limitation and cannot be created or flattened.  That then translates to Convert to Sheet Metal too.  Could I ask you to submit an enhancement request through GTAC with the part uploaded so we have it in our database for future planning.

Thanks

Dave

Highlighted

Modeling features in a Sheet metal part.

Legend
Legend

Is there an easy way to accurately unfold a part that was constructed with a majority of sheet metal features, but has some swept flanges?

 

unfortunately, I cannot post a sample file publicly. I can possibly send it to GTAC as it's probably covered by NDA

Rob Newcomb, CAD/CNC/Simulation manager
Elmhirst Industries, Specializing in Prototype sheet metal stampings and assemblies

Production: NX 12.0.1 / Autoform r7 /WorkNC 2018 r2
Testing:nothing.
PC: Rave Cadbeast: Intel(R) i7-4790K CPU @ 4.GHz /32gb ram /NVIDIA Quadro P2000 on Win10 Pro
NX Sheet Metal
NX Sheet Metal

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