Are the legacy mating conditions available

[3dr]

in NX 7.5?

Dunno if I can make the move to easily with out them. It wasn't a good experience for me when they showed up.

TIA

Dave

 

[JohnRBaker]

Assemblies created using the older legacy 'Mating Conditions' will continue to be valid and will update as model changes are made. However, you will not be allowed to either edit (other then simple changes to expression values for things like angles and distances) or create any 'new' legacy 'Mating Conditions'. And before you ask, there are NO 'switches' or variables which can be set that will 'resurrect' them (we're serious this time).

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

http://www.siemens.com/plm

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

To an Engineer, the glass is twice as big as it needs to be.

 

[3dr]

SUUUUUCCCCKKKKKK!!!!!!!!!

Condtrints better be much improved.

 

[JohnRBaker]

If you have issues, please don't keep them to yourself.

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

http://www.siemens.com/plm

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

To an Engineer, the glass is twice as big as it needs to be.

 

[3dr]

I'll post them as they come up.

My previous experience was with unpredicable part movement. With "mating" you selected the part to "move"... then the part to "move to".

That seemed to be working at first and then it inverted on me. When I posted the issue here one of the responses was that the new constraints were shaky. So I went back to mating.

I dont need or want to fully constrain anything in my assemblies. I dont have time for that. Sometimes I mate to simulate movement but mostly its just a means to "place" a part or maintain a simple relationship between 2 parts.

Nothing fancy...

 

[phillpd]

I'd recommend that you always 'fix' at least one component.

 

[JohnRBaker]

It helps if you remember that with Assembly Constraints, unlike with Mating Conditions, there are NO parent/child relationships, but rather it's now relations 'between' Components. This is very similar to what happens when you constrain a Sketch (this is NOT a coincident BTW since Assembly Constraints are based on a 3D version of the 2D constraint 'engine' used in the Sketcher) where either object can control the position of the other. This is what allows you to create relationships which would be circular in nature when using Mating Condidtions (try doing a 4-bar link where both of the 'fixed' pivot points are attached to the same Component).

The advice about Fixing at least one Component is very good advice. And remember, with Assembly Constraints you can not only have more than ONE Fixed Component, you can also remove and reassign Fixed constraints at will, something which was impossible with Mating Conditions where the FIRST component was the ONLY fixed Component (and it was permanent) and ALL other Mated Components were tied back to it, which is why circular references were common and often impossible to resolve.

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

http://www.siemens.com/plm

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

To an Engineer, the glass is twice as big as it needs to be.