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dgschaefer21-Topaz II
21-Topaz II
November 22, 2017
Question

Mechanism Fails In Upper Assy

  • November 22, 2017
  • 2 replies
  • 1895 views

Creo 2, M230 (but duplicated in Creo M020)

 

I have a subassy with a single mechanism connection defined.  All other components in this sub assy and the rest of the entire opt level assy and other subs use standard constraints.  In the sub assy this mechanism (a simple pivoting door) works fine.  There are no errors generated.  In the next assy up and the top level assy, however, the door will not move.  I get an error that the mechanism constraints could not be satisfied. 

 

Creo also reports that the assy is disconnected in both the top level and the parent sub assy but not in the sub assy with the mechanism constraint.

 

I've verified that the mechanism references in the sub assy are only between two components and I

m at a loss as to why this is failing.  Any ideas of what I should check?

2 replies

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MartinHanak24-Ruby III
24-Ruby III
November 23, 2017

Hi,

 

can you prepare simple testing assembly showing the problem ? If YES, please upload it.

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dgschaefer21-Topaz IIAuthor
21-Topaz II
November 27, 2017

I'm not sur if I can, this is a fairly complex, skeleton driven assy so trying to simulate the structure and reproduce the problem isn't simple.  I was hoping someone had seen something similar in the past and had some insight.

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dgschaefer21-Topaz IIAuthor
21-Topaz II
November 27, 2017

Well, I still don't completely understand it but it seems that I've fixed it.  We'll see what else I've broken in the process.

 

This thread:

 

https://community.ptc.com/t5/Creo-Modeling-Questions/Assembly-Regenration-Error/m-p/492351#M113825

 

Led me to this CS article:

 

https://www.ptc.com/en/support/article?n=CS31615

 

Which led to me setting the config option enable_implied_joints to no.  Now I get no disconnected message and I can drag the door in all levels of the assy with no trouble.

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