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Cannot perform the hem feature on the dimple feature edge

Theorist
Theorist

Hello Everyone,
I cannot able to perform hem operation to the dimple feature edge or punching feature edge.
I mean, first i performed dimple operation, then i wanted to hem the edge of the dimple feature, but i cannot able to do it, can anybody help me.

8 REPLIES

Re: Cannot perform the hem feature on the dimple feature edge

Valued Contributor
Valued Contributor

(no)hem.png

Hi,

 

I don't know exactly what you've meant. See the screenshot above. Done in NX 12. Left is a Solid Punch with front side pierced, right a dimple. Both have on top a Cutout. The 4 "Hem Flanges" are Standard SB Flanges with Bend Angle 179° (180° will not work). On these edges Hem Flange did NOT work. So I think I can confirm. Maybe SB Flange with 179.999° could be a workaround.

Re: Cannot perform the hem feature on the dimple feature edge

Siemens Phenom Siemens Phenom
Siemens Phenom

Thanks @Thomas_K.

 

Hello @SaiKiran_Kittu,

Currently Hem is not supported on deform feature edges.  You can emulate a hem using SB flange - use a bend radius of 0.004mm.

And as stated above, 180deg is not supported here.  You could use two SB Flanges at 90deg each to achieve the perfect 180deg.

First flange: Bend Radius 0.004, Length 0.002

second Flange: Bend RAdius 0.004, Length as desired.

 

Now if you meant to run a hem along the highlighted edhe in the picture below?  That is not yet supported.  Please raise an enhancement request if that's what you need.

2018-02-05 10_00_28-Siemens NX - Sheet Metal.jpg

 

Thanks,

 

Dave

 

Re: Cannot perform the hem feature on the dimple feature edge

Theorist
Theorist
Thanks for your feedback @Thomas_K

Re: Cannot perform the hem feature on the dimple feature edge

Theorist
Theorist

Thanks @Dave_Walker

 

As per your input I have tried with First SB Flange and Second SB Flange,it is working for only straight edges but not for curved edges.

Image attached.

Re: Cannot perform the hem feature on the dimple feature edge

Siemens Phenom Siemens Phenom
Siemens Phenom

Hi @SaiKiran_Kittu, I don't see an attachment

Re: Cannot perform the hem feature on the dimple feature edge

Theorist
Theorist

Re: Cannot perform the hem feature on the dimple feature edge

Siemens Phenom Siemens Phenom
Siemens Phenom

Hi @SaiKiran_Kittu,

 

There is an alternate solution here.  It depends on:

  1. Do you need to flatten the design?
  2. Can you use NX12?

Try this:

  • Create the base part as you already have
  • Now run Convert to Sheet Metal command and pick the Dimple face as the base face
  • Now add the hem features.

2018-02-06 17_07_51-Siemens NX - Sheet Metal.jpg

In NX12, you can locally convert the rest of the part back so it will unfold.  Take care in your internal cutout that the hems do not intersect when flattened.

2018-02-06 17_08_48-Siemens NX - Sheet Metal.jpg

 

 

Re: Cannot perform the hem feature on the dimple feature edge

Siemens Phenom Siemens Phenom
Siemens Phenom

I just noticed that you want the hem around the inside cutout too.  Do you have material that can do that without splitting?

Highlighted

Cannot perform the hem feature on the dimple feature edge

Theorist
Theorist

Hello Everyone,
I cannot able to perform hem operation to the dimple feature edge or punching feature edge.
I mean, first i performed dimple operation, then i wanted to hem the edge of the dimple feature, but i cannot able to do it, can anybody help me.

NX Sheet Metal
NX Sheet Metal

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