Mating Conditions vs Assembly Constraints.

[CEGraves]

Win XP
NX 5.0.4.1

In the attached jpeg, you will see 2 hydraulic fittings with 37 degree flares. In the old mating conditions I could use a "mate" to bring these two together by selecting the male 37 degree face and the female 37 degree face, with one degree of freedom left over. In the new assembly constraints, I use a "touch" on the two 37 degree faces and then an "align" to bring them together with one degree of freedom left over. Is there a way in the new assembly constraints to only use one constraint like the old mating condition's "mate"? Also, "concentric" will bring them together in one shot, but the 37 degree flares won't be touching, so that doesn't work.

Thanks,
C. Graves
Gehl Co.

 

[JohnRBaker]

In a few special cases, such as this one, it takes 2 constraints, a Touch and an Align, to replace an old Mate. That's just the way it works.

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

http://www.siemens.com/plm

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

 

[hudson888]

On the other hand some of the SAE fittings use two different angles not both 37 degrees, we just used to model them that way because the conical mating condition worked if we did. Same deal with countersunk holes and flat head socket screws, some are 82 degrees others are 90 degrees etc.

So for me the touch condition will be more correct. Now if the converter gets it right and outputs two for one will be something I have to test in my spare time.

Best regards

Hudson