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R
rlilly1-Visitor
1-Visitor
November 27, 2013
Question

Default Assembly Constraints Creo Parametric

  • November 27, 2013
  • 3 replies
  • 3067 views

I have found in Creo 2.0 that when assembling parts it often defaults to NORMAL constraint when selection two planes or axes instead of COINCIDE. 99% of the time i want the default constraint to be COINCIDE. It is annoying to constantly go to the drop down and change the constraint from NORMAL to COINCIDE. Is there a way to set the default constraint to COINCIDE so that when i select two features (plane, axis, point, surface) when assembling that I can have the COINCIDE constraint applied to them automatically and not NORMAL.



If anyone has any experience with this your help would be greatly appreciated.


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3 replies

S
23-Emerald III
StephenW23-Emerald III
23-Emerald III
November 27, 2013
I looked for this same thing and didn't find a good solution. There is a setting for how much tolerance it will have for the normal constraint.

I agree, the normal constraint is a GREAT addition to the tool box but it should NEVER be defaulted to. It's just not a common constraint.

The config option for "reducing" the assumption of normal is:

Comp_normal_offset_eps

I set it to zero because it's description says if it is equal to or less than the value, it will assume normal constraint. I don't know if it really helps or not.

T
TracyWillis10-Marble
10-Marble
November 27, 2013
It too found that behavior to be bothersome. I added this option (below)
It helped a little but NORMAL does still pop up often.

auto_constr_always_use_offset never

Control whether auto constraint should create offsets.
Yes - Auto constraint always creates offsets.
No - Auto constraint snaps align or mate if surfaces are within tolerance.
Never - Auto constraint never create offsets.

Tw - have a good day all
R
rcook1-Visitor
1-Visitor
December 2, 2013

Try setting the following config options:


auto_constr_always_use_offset NEVER


comp_angle_offset_eps 91


comp_normal_offset_eps -1



-Roger

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