Creating a Flat Face from one with waves NX 8.5

[MJC12]

Hello all,

I'm new in the field and i've been thrown into an unfamiliar program. I'm currently working on a model to be printed on our Metal Sintering machine. To do so, I need to flatten the inside of my model or else we will have printing errors. I have attached a quick print screen of the model. I'm not sure what the best way to go about creating a smooth wall on the inside, any guidance would be much appreciated.

Thank you,

Mike C

 

[JohnRBaker]

You didn't provide anything that shows us the current "inside".

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

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

 

[MJC12]

I'm not sure what type of file to attach to give you all the information you need. The part is a hollow shape with ridges down is length. The screenshot is a picture of the part cut in half to show that the inside follows the same ridges as the outside does. I need the inside to be flat instead. I'm just not sure what tools/ procedure I need to go through to do that.

 

[JohnRBaker]

Are you saying that the part is not a solid body but is instead only a set of surfaces?

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

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

 

[MJC12]

It's a solid body. Imagine a fairly narrow funnel with a wall thickness of about a millimeter, and the funnels wall has ridges instead of being straight. Kinda like this (

http://www.crateandbarrel.com/collapsible-funnel/s507393).

Apologies for being vague

 

[JohnRBaker]

Is the top a single planar face (i.e. flat)? If so, have you tried to simply Delete all the Faces (with the 'Heal' option toggled ON) of the inside of the model? Once they've been removed you'll have a solid body with NO interior detail. You could then simply model whatever you wanted for the interior space.

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

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

 

[MJC12]

After deleting the interior faces, the part becomes completely solid (no longer hollow). I tried shelling it out but that gives me the same rigged edged interior as before.

 

[JohnRBaker]

I never suggested shelling it out, I simply said that you could now model whatever shape you wished to represent the interior void. There is no 'natural' shape EXCEPT something that is the offset of the outer face, which obviously is not satisfactory for your needs. Therefore the shape will be somewhat arbitrary, meaning that it's up to you to decide what that shape looks like.

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

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

 

[MJC12]

So I drew up a body out of some sewn up surfaces and when I went to subtract it I got an error telling me my tool and target don't form a complete intersection. What did I do wrong? I've attached a screenshot of what i've done.

 

[MJC12]

Thanks for answering my questions by the way, this is a huge help!

 

[JohnRBaker]

I would have taken your model, before you deleted the interior faces, and drawn a profile representing the desired cross-sections at the top (and the top profile could out away from the top of the solid body wherever it would be convenient to draw the profile) and at the bottom of where the void would extend, along with THREE curves connecting the bottom with the top profile at proportional points and modeled to basically mimic the overall shape, less the 'waves', of the inner shape of the model. I would then use the Swept Body function, selecting the two profiles as the Sections and the three curves as the Guides and swept a solid body. I would then perform the Delete face operation on the inside the original model and then subtract the swept body to form the void. If needed to round it off at the bottom, you could use a blend to do so.

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

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

 

[MJC12]

Decided to try your method and was met with a slew of errors. Drew my top profile, drew my bottom profile, and I drew three guide curves following the shape I wanted between these two profiles. First, when I select my top profile I am told that having multiple loops is an issue. If I only select part of the profile and move on to choosing guides, I am told that my guide curves are not connected. Why would they need to be connected to each other? They are going from different parts of the same profile, down the part, and onto points of a different profile. Doesn't make sense why they would need to be connected.

 

[cowski]

In the swept command you can have up to 3 sets of guide curves. The set can consist of one or more curves; if it is made of multiple curves, they must be tangent continuous. The message you got indicates that there are gaps between the curves in one of the sets.

The "multiple loops" message probably indicates a similar situation with your section curves, a set of section curves that is not connected.

www.nxjournaling.com

 

[JohnRBaker]

If we could just have the part file there are those of us here who could help you, even if it was some junk part that at least had all the characteristics of your actual part.

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

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