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Variational Sweep

Valued Contributor
Valued Contributor

Hello,

 

i am working with NX11.0.0.33 MP0 and there are several changes in Variational Sweep. They are really good for analysis in case when VS can't produce a geometry. But what i miss, is automaticaly generated expressions links between VS and sketch.

 

In past i haved problem with non-linked VS in NX10, but that i taked as issue of part:

https://community.plm.automation.siemens.com/t5/NX-Design-Forum/Variational-Sweep-produce-not-linked...

 

I take that as issue, because when is made a sketch with 10 dimensions and from it as well VS with 2 positions of dimensions changes, musst be there 4 times by hand VS expressions spare with links on sketch.

That i say really hard work.

I hope i maked somethings wrong and is it possible automatic links somewhere allow. I don't wanna to believe in NX is this situation as standart, because it is step back in cave age.

 

Please give me some advice or explanation

 

Thanks

 

 

 

 

 

9 REPLIES

Re: Variational Sweep

Siemens Valued Contributor Siemens Valued Contributor
Siemens Valued Contributor

Hi GrLoki,

 

I’m not quite sure I really understand what the question really is here but my interpretation is based on your linked issue:

 

https://community.plm.automation.siemens.com/t5/NX-Design-Forum/Variational-Sweep-produce-not-linked...

 

In the attached movie shows how you can create a Variational Sweep feature from a Guide String/Path and a Sketch (On Path) attached to the Guide/Path curve. The movie shows:

 

  1. Creation of the Sketch (On Path with no External References)
  2. Creating the Variational Sweep feature
  3. Adding an additional section to the Variational Sweep feature
  4. Modifying the additional section of the Variational Sweep by changing the defining expressions
  5. Creation of the Sketch (On Path with External References)
  6. Comparison of behavior using no Exterior References vs using Exterior References

My suspicion, without fully understanding your sketch constraints, is that you are using one or more external constraints causing your unexpected behavior. Please have a look at the movie and maybe there is something in there that can help you.

(view in My Videos)

Re: Variational Sweep

Siemens Legend Siemens Legend
Siemens Legend

Hi,

 

I hope Sandman's reply explains something to you. If not then you need to be clearer in your description or share the part file. It is not very clear what you problem is.

 

Regards, **bleep**

 

Re: Variational Sweep

Siemens Phenom Siemens Phenom
Siemens Phenom

Although this is not in reference to what you have going on, I just want to post a link to the what is new in variational sweep in NX 11 for looking at the curves in case someone else is looking at this thread. 

 

NX 11 V-Sweep

 

Scott

Re: Variational Sweep

Valued Contributor
Valued Contributor

Hi D i c k,

clear desription.
In NX10 Variational Sweep made for each expression of sketch dimension a linked dimension in additional section of Variational Sweep.
Linked Expression mean p56=12(internal dimension of sketch) and p302=p56(internal dimension of additional section of VS), then when i changed p56, link changes also p302 tu same value as p56.

In NX11 VS makes only copy of value for example p56=12 also p302=12. When i change p56 in sketch it will have no effect on additional section of Variational Sweep.

I mean, it can cause issues in Part construct and edit and VS miss some of original program.



Re: Variational Sweep

Valued Contributor
Valued Contributor
Thanks Scott,

unfortunatly, your blog miss some example with additional sections of VS.

Re: Variational Sweep

Valued Contributor
Valued Contributor
Hi Sandman,

nice video with important value, but im really sure that im using internal dimensions.

Thanks

GL

Re: Variational Sweep

Siemens Legend Siemens Legend
Siemens Legend

Hi,

 

I have not worked on any Vsweep project lately. The person is now happily retired! I will contact the responsible developer/owner and ask about this change.

 

I am as surprised as you are.

 

Regards, **bleep**

Re: Variational Sweep

Valued Contributor
Valued Contributor
Finaly.

Re: Variational Sweep

Siemens Legend Siemens Legend
Siemens Legend

Hi,

 

Here is an update on the issue:
After internal discussions we decided to file a PR for this problem. That change to make editing of expressions easier in NX 11 resulted it becoming harder to maintain like sections. 
We will fix this.

 

In the meantime, you have to link your sections manually, here is a tip:
When you find editing of an older Variational Sweep difficult (because of the MB3 "make constant" action), try using the customer default "Expression Expert Mode". This customer default will enable display of the formula inside the expression field just like in the old days. You can then directly type in the expression field.

Search for "expert" in customer defaults.

 

We here at Siemens are sorry for the inconvenience and hope you still enjoy using NX.

 

Regards, **bleep**