How to 'place' the center of gravity in a part?

[fighterpilot]

Searching brought back nothing so a question is in order.

I have a part which mimics the outer moldline of an multi-piece assembly. I know the weight and the center of gravity of this assembly. I want to put that information into the moldline standalone part. I can figure out what the density of this part should be since I can determine the volume and I know the weight. However. How do I put the CoG into the correct location?

--
Fighter Pilot
Manufacturing Engineer

 

[JohnRBaker]

If you do a...

Analysis -> Measure Bodies...

...and toggle ON the 'Associative' option, in addition to creating the various Mass Property Expressions, it will also create a 'Point' object at the centroid of your model which will update as the model it edited.

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

http://www.siemens.com/plm

UG/NX Museum:

http://www.plmworld.org/p/cm/ld/fid=209

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

 

[fighterpilot]

John,

I'm aware of how to figure the CoG of the part. What I want to do is place a CoG at a specific location in a part.

--
Fighter Pilot
Manufacturing Engineer

 

[JohnRBaker]

I'm not sure what you're trying to do... The centroid of a model is what it is. It's 'derived' NOT 'defined'.

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

http://www.siemens.com/plm

UG/NX Museum:

http://www.plmworld.org/p/cm/ld/fid=209

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

 

[cowski]

If you have an advanced assembly license you can assert values with Analysis -> Advanced mass properties -> Advances Weight management....

http://www.nxjournaling.com

 

[fighterpilot]

"The centroid of a model is what it is. It's 'derived' NOT 'defined'"

I understand that. The standalone part I'm using in my assembly is just a simplified outer moldline of a complicated assembly I happen to know the mass properties of.

I want this simplified part to have the same weight and center of gravity location so I can use it, and not the actual assembly, in my tool design.



--
Fighter Pilot
Manufacturing Engineer

 

[JohnRBaker]

As cowski has already mentioned, if you have an Advanced Assemblies license, then going the...

Analysis -> Advanced Mass Properties -> Advanced Weight Management...

...route provides the only built-in solution that we offer.

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

http://www.siemens.com/plm

UG/NX Museum:

http://www.plmworld.org/p/cm/ld/fid=209

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

 

[Toost]

Start with Cowskis recommendation, then go "Assert Values - Work Part - I think it's self explanatory from there.

Tomas

 

[uwam2ie]

look:

http://www.youtube.com/watch?v=zgHZMdfJy30