models going out of date and not updating as they should

[nag57]

I have been having trouble with models going out of date and not updating as they should.

To investigate, I created a simple part that starts off as an Extrude from curves, and then added some features to it: a Shell, a few more extrudes, some draft and some blend features. Then, using a couple of different methods, I edited the curves used to create the initial extrude and it seemed to update as it should. Then, I saved the file and closed all parts; when I re-open the part, and made those same edits on the original extrude, it now throws all or most of the features (the shell, other extrudes, taper, and blends) out of date, and the model will not update as it should. I have to go and re-associate all those features. I am using edit with rollback, and I used "make current feature" in my feature tree and tried both ways.

Others at my work are having the same issue. Any ideas?

 

[SamSlivinski]

Can you attach the file?

 

[cowski]

What version?

www.nxjournaling.com

 

[nag57]

The version is 7.5.4.4
A file that was made to demonstrate the issue is attached.

 

[jerry1423]

I assume if you put those curves in a sketch you won't have the problem.
Sorry, but you really need to start using NX the way it was meant to. The probelms will only continue if you don't.

 

[cowski]

When I initially open your part, the very first feature has the alert: "Open loop 1 has become closed type of body changed from sheet to solid". I assume that your closed loop of curves became an open loop and a later edit closed them again. NX was updating the model after each individual edit so the result errored out. If you have recently updated from an earlier version of NX, I would suggest you investigate what your previous "update" options were. I had to make some adjustments when I upgraded from NX2 to NX6 to get it to behave how I expected. With careful editing technique and the right update options, basic curves are a perfectly valid approach. With that said, I'd also encourage you to take a look at the sketcher, it has come a long way in the time that I have been using UG/NX. It may deliver a more robust solution and help capture subtle design intent. I have had coworkers who only use basic curves and others who would never touch them; personally, I find good uses for both basic curves and sketches.

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