Assembly errors when opening file

[rjs286]

Hi guys,

I have been battling a problem for the past week with an assembly I have made. I am running SW2006 SP0.0.

When I am done adjusting my assembly, I regenerate it, then save it, with no problems. If I go and close it, then reopen it, sometimes It takes my mates and switches the faces (ex: elbow)from one side to the other, which gives me rebuild errors. IT IS DRIVING ME CRAZY! Nobody else is modifying these parts or assembly but myself. Is it in the way I modelled it?
What can I do?

Thanks,
Ron

 

[CorBlimeyLimey]

Some mate problems were fixed in later SPs. I suggest you upgrade to SW06-SP5, or even SW2007-SP1.1 if possible.

 

[drawoh]

rjs286,

Do you have a lot of parametrically controlled features in your parts? Sometimes, these can flip back and forth, messing up assembly constraints.

JHG

 

[rjs286]

I have a good amount of parts that use other parts in the assembly for existing geometry, such as faces and edges. Should I try and delete the inplace mates, remate them, and dimension the geometry instead of using the other part's geometry? All my problems are with elbows and pipe. The pipe's feature is extruded up to surface as well, if that matters.

rjs286

 

[drawoh]

rjs286,

I do not see a problem with in-place mates. You should look at all the parametric geometry attached to the mates. Localizing a few of these features may solve your problem.

JHG

 

[rjs286]

Well if I have all the parts open before I open the assembly, the mates stay. Is the parametric geometry existing geometry used to model other parts, or like a design table dimension?

rjs286

 

[CorBlimeyLimey]

Create suitable planes (not using faces or points of the "flipping" geometry) in the offending parts & use those planes when mating in an assy.

Assembly mates and best practices faq559-871

 

[SBaugh]

You said "regenerate" are you saying you are doing a Ctrl-Q before saving and closeing the file? - if not try doing that before closing the file and see what your result is.

Regards,

Scott Baugh, CSWP

http://www.scottjbaugh.com

faq731-376

 

[rjs286]

I have never tried using the ctrl-Q method, I will try that next time I save. I just push the regenerate "traffic light" button to regen the model.

Thanks for the FAQ link, I think it will be very helpful.

 

[SBaugh]

The traffic light just rebuilds the last feature... ctrl-Q rebuilds the entire tree.

Regards,

Scott Baugh, CSWP

http://www.scottjbaugh.com

faq731-376