Complex blend 1

[SiW979]

Hi All

Attached is a componet which will be a casting. You will see an over hanging face and the challenge we are facing is making nice blended edges bewteen all the faces that converge in the right hand lower corner. We have tried to do it without using free-form, I would love to see a few different plans of attack.

Cheers

Si



Best regards

Simon NX7.5.4.4 MP8 - TC 8

http://www.jcb.com

 

[ingallspw]

Could you create a marked up screen capture to give a better picture of what you are trying to do?

 

[ingallspw]

One thing I might suggest is adding draft as your last step.
Try adding a few edge blends at different points in your history tree.
Also, you may be able to get what ever result you are looking for by simply doing multiple edge blends and the order will matter as well.

 

[SamSlivinski]

I was able to blend the faces using edge blend to pretty good effect. Just do each edge seperately. I am not sure what final look you were going for though.

Sam Slivinski
Using NX 6
Manufacturing/Aerospace

 

[Toost]

I assume that what you desire is "make the red edges smooth" in the attached image ?

Regards,
Tomas

 

[JohnRBaker]

It will depend on the blend size and whether all of them are the same size. That being said, attached is an example where all the blends are 2mm.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[SiW979]

these are the edges we are trying to blend.

Best regards

Simon NX7.5.4.4 MP8 - TC 8 www.jcb.com

 

[kapmnit123]

Hi Experts,
Please check if the blends look ok.i have not blended it completely but covered most of the region.i have done it in NX8.5 (blend value 3mm throughout all edges) so sharing the parasolid file.
Best Regards
Kapil Sharma

 

[kapmnit123]

Here is the final blended model (my apologies if i left any edges unblended... blend value is 3mm for all edgess as of now).
Best Regards
Kapil Sharma

 

[SiW979]

We managed to do it using a combination of face blends and edge blends. See attached

Kapil, you have ridge on the sloping face, you would need to increase the size of the longest blend to remove this.

Thanks for everyones input

Si

Best regards

Simon NX7.5.4.4 MP8 - TC 8 www.jcb.com

 

[kapmnit123]

Hi Simon,
Thanks for the valuable suggestion.Sorry i didn't knew the exact blend values initially ....but now i have done it once again taking blend value reference from your model....
I have not used any FACE BLEND however and did it entirely using EDGE BLEND only (used option special blend at conxex/concave Y).
I know this thread is more or less complete but thought probably i can still share it with you all.
Best Regards
Kapil Sharma

 

[SiW979]

Kapil

Can you post the .prt so I can see the features you have used?

Cheers

Si

Best regards

Simon NX7.5.4.4 MP8 - TC 8

http://www.jcb.com

 

[kapmnit123]

Hi Simon,
Sorry actually I have done it in NX8.5 (due to my current work platform NX8/NX8.5).But i will still attach it here.I will see if i can find someone who can replicate it in NX7.5.
Thanks and Best Regards
Kapil Sharma

 

[SiW979]

I have NX 8.5 too

Best regards

Simon NX7.5.4.4 MP8 - TC 8

http://www.jcb.com

 

[kapmnit123]

Thanks for saving my day Simon.
Best Regards
Kapil Sharma

 

[SiW979]

It appears that you can only do that blend in NX8.5, i have tried to the same thing in 7.5 but without success. The only way of doing it is to use the face blend tool

Cheers

Si

Best regards

Simon NX 7.5.4.4 MP8 and NX 8.5 (native) - TC 8

http://www.jcb.com

 

[JohnRBaker]

Note that particularly with 'Edge Blends' that the Parasolid people are continuously 'tweaking' the code as additional special cases are encountered. This is the nature of 'Blending' in general since the potential number of unique topological cases are infinite so to is the expectation that this will be an area where continuous development will be taking place. Therefore we shouldn't be surprised when suddenly blend cases which required complex workarounds in previous versions of NX are now able to be created in a more direct manner when you finally get access to the latest version of the software. And we should expect this 'continuos improvement' phenomenon for some time yet.

Therefore, as unique topological cases are encountered, even if you manage to force the issue using a less than ideal series of operations, as Simon did with a mix of 'Face' and 'Edge' blends, it would be useful to us if you were to contact GTAC and have them open an IR/PR along with any example models that you could provide them so that these will get back to Cambridge where the Parasolid people can add them to their collection of special cases and which will help them in their efforts to 'tweak' the code for one more unique situation.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[Toost]

Hi Simon,
here's another attempt. I tried to do it slightly different, the objective was to separate the blend chains to ease that difficult vertex.
Model from 8.5.

Regards,
Tomas

 

[SiW979]

Tomas

Genius! Such a simple step as the chamfer makes it so, so easy.

A shiney purple star for your effort!!!

Si

Best regards

Simon NX 7.5.4.4 MP8 and NX 8.5 (native) - TC 8

http://www.jcb.com