Missing curves on Revolved Solid - still solid.

[wmalan]

NX6.0.1.5

Created a Revolved Solid from basic curves and splines (yes I should use sketches...). I jumped around from project to project and when I reopened the file, the solid is intact but some of the curves are missing. The Revolve operation shows only the existing curves yet the full solid is created. All layers are turned, show all, etc... This is a new one for me.

--
Bill

 

[cowski]

So, is the question "why are the curves missing?" or "why did it still create a solid?" or something else entirely?

 

[mmauldin]

Try Format > Visible In View > Reset to Global

 

[wmalan]

cowski, Yes. Why are the curves missing? (not sure)
Yes. Why did it still create a solid (really not sure)

I think the fact the solid is still there without the curves tells me the system did the deleting (hiding) of curves.

mmauldin, Tried that. Not there either...

--
Bill

 

[mmauldin]

can you post the file?

 

[hudson888]

I can't see clearly from the image which curves are missing. After you turn on all the layers, regenerate all the view and make sure that there is nothing hidden or visible in view then we may have to look at other reasons. One other way to discover missing geometry may be to load the part to another assembly on the work layer and then change the reference set to entire part. Sometime if you haven't completely satisfied the former checks then this assembly method will find them for you. You should probably also run a part clean-up and try re-opening the file in a clean session.

In general what may be presenting as a curve display error of sorts is extremely rare.

The only other thing that I can think of is that open ended revolved will infer the end closures to create a solid. In your case though from the image what you are pointing out doesn't appear to relate to that. I just wonder if the bosses on either end have been created from separate extrusion features that appear after the revolve?

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum

 

[wmalan]

mmauldin, hudson,

Linked file is missing_curves.prt
As you'll see, it's a simple revolve with some extrudes done after. I'm thinking it's something simple I'm missing...

Thanks

Bill

 

[ufsure]

They are all there. Right Click -> Replace View -> TFR-TRI and you will see all of them. It is a visible in view setting I think.

Suresh

http://www.technisites.com.au

 

[JohnRBaker]

It appears for some reason that the 'missing' curves may be in the 'condemned' state. 'Condemned' is temporary state during the process of deleting an object and remains Condemned until the part file is saved at which point they actually are deleted. What it appears here is that these curves are caught between these states.

I don't have access to the tools which could determine that, but I'm going to forward this file to someone who might. I'll let you know what I learn.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

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

 

[wmalan]

Suresh,
"They are all there. Right Click -> Replace View -> TFR-TRI and you will see all of them. It is a visible in view setting I think."

Hey, there they are. That said, I've been using UG since v14. I still don't get visible in view (us NC programmers are hacks at times). I must have "replaced" a view during curve creation? I get them all to show in TFR-TRI but how do I get them to show in all views? I switch to TOP then tried visible in view then selected all layers but only see those missing curves in TFR-TRI. Then tried reset to Global with same results...

John,
I know my life can sometimes be in a condemned state but...curves??? <g> Still not sure how it all happened.

 

[JohnRBaker]

There still appears to be problems with this part as the curves which now appear to be view-dependent cannot be changed back to model-dependent. I'm still going to have someone look at it.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

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

 

[wmalan]

John,

Yes your correct about the view-dependent issue. Appreciate the feedback.

--
Bill

 

[Xwheelguy]

wmalan,

Have you tried going to Drafting, turning OFF the drawing so that you see what is in Modeling, then using the View Dependent Edit icon to convert dependency to Model dependent? Try it while the view that shows all the curves is the current view in Modeling.

If nothing is selectable, then they are probably in a stuck state similar to what John described above.

Tim Flater
Senior Designer
Enkei America, Inc.

http://www.enkei.com

Some people are like slinkies....they don't really have a purpose, but they still bring a smile to your face when you push them down the stairs.

 

[JohnRBaker]

Tim,

I tried that and I was NOT able to convert them back to model-dependent, which is why I suspect that there are some issues with these curves which goes beyond simply being 'view dependent'. I'll post what I learn when I get some answers.

John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Cypress, CA

http://www.siemens.com/plm

http://www.plmworld.org/museum/

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

 

[mmauldin]

Although it doesn't answer the question "why", I was able to salvage the curves by projecting them onto a plane using the "replace" option while in the TFR-TRI view. Seems to fix the file but the mystery remains.

 

[mmauldin]

OK "seems to" was the operative phrase. After closing and reopening the file, the problem came back. Very weird.

 

[hudson888]

This may have fixed the part for what it is worth. What I did was to switch to another view where the curves were not view dependent, and then I ran an old grip program that changes all of the entities from view dependent to model. It seems to have stuck after I re-opened the file.

These grip programs were part of the UG grip library some years back but if you don't have a copy I guess they're in the public domain and I could post the executable here.

Best Regards

Hudson

www.jamb.com.au

Nil Desperandum illegitimi non carborundum