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Can we design Multi Body Part../?

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Can we design Multi Body Part../?

Hello,

I want to design Mouse in creo, i done outer body using surface..

Now I want to divide in multi part.. Its possible in Creo..?

If yesh then how can we do it..?

Same thing can do in SolidWorks,

its work on multi body part modeling base, so...

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Can we design Multi Body Part../?

Hello,

perhaps you are asking about skeleton technique and TOP-DOWN design. The target is share driven geometry from one "main part" to all anothers?

Try to search more information about copy geometry.

For example youtube offers some tutorials:

Top Down Design using Skeleton Assemblies - Part 4 - External Copy Geom - YouTube

Regards

Milan

20 REPLIES 20

Re: Can we design Multi Body Part../?

Hello,

perhaps you are asking about skeleton technique and TOP-DOWN design. The target is share driven geometry from one "main part" to all anothers?

Try to search more information about copy geometry.

For example youtube offers some tutorials:

Top Down Design using Skeleton Assemblies - Part 4 - External Copy Geom - YouTube

Regards

Milan

Highlighted

Re: Can we design Multi Body Part../?

Thanks for this..

but this not what i want to know..

Re: Can we design Multi Body Part../?

Deapk,

Creo is not a "multi-body" type software like NX, Catia etc.... Although what you want to do is possible with a Top Down method and can be accomplished by a few methods. You can use a Master/Merge, Publish Geom/CopyGeom or you can use an Inheritance feature. You could do it as a Bottom Up method but it is not advisable since you have an exterior, countered surface that is shared by multiple parts.

I prefer the PubGeom method. In any case, you can create all the part break outs in one file and then "share" the information to the individual parts as one or multiple features. If you need to see a simple example, let me know.

Dean

Re: Can we design Multi Body Part../?

Creo does not allow for multiple solid bodies within a single part like SW does.  You can make multiple, non-overlapping solids in a single part file, but Creo treats them as one.  If they overlap, they are merged.  Each part of your mouse should be a separate part file.  It's slightly more cumbersome, but I find it to better represent the reality of the physical product.

The top down design techniques mentioned above can be used to pull the surfaces out of the master model you've created into the individual parts.  I find the skeletons & publish geom / copy geom pairs to be the most robust and flexible, but it does require the Advanced Assembly Extenion (AAX) which you may not have.

--
Doug Schaefer | Engineering Manager
Crow Works

Re: Can we design Multi Body Part../?

Just wanted to confirm that what Doug and Dean are talking about is the way to go in Creo. Create a master model which is like a layout of the old days and then use those surfaces and any thing critical shared between parts using one of many techniques. I prefer using Publish Geometry out from the master and copy geometry from the master to import into the individual shapes. It can seem like extra work up front, but will totally be worth it down the road especially if you create the master thinking about association between features and geometry. Make changes in the master and regenerate the master and parts and get all the changes down steam. This can be a very robust modeling technique. Good luck.

Re: Can we design Multi Body Part../?

Building on Dean, Doug, and Mark...

I will also throw in my vote for the Master Model - External Copy Geom technique.   I personally use this technique every day.  There is no way I could do what I do with the quality and proper matchup between complex piece parts without this powerful tool.

Good Luck

Bernie

Bernie Gruman

Owner / Designer / Builder

www.GrumanCreations.com

Re: Can we design Multi Body Part../?

 

Hello,

I have worked several years with CATIA V5 . We had a "Basic Feature" method only works with multibody . Instead of multibody I use in CREO closed quilts . The quilts are then used by Solidifys. Analogous to the Boolean operations in CATIA V5 . In addition, I also use the top-down methodology with EXTERNAL COPY GEOMS and PUBLISH GEOMS.

 

Re: Can we design Multi Body Part../?

PTC Strategy is: one part, one material, one mass -> just like in real / physical world.

BUT - you can simulate similar things just like in SWX with little restrictions

First thing:

- you need discipline in managing features in your model tree

then you can use closed quilts instead of solids.

- manage the features for each quilt in right order in the model tree

- use annotations features (without annotations) as marks to sort your features

- use an analyze feature with the right density for each quilt to calculate the complete mass of your multi body part

- separating the visibility with layers would be very helpful - even when you use combined states

So: If you can work with this restrictions, you can create multi body like parts - IMHO - I never used multi bodies in SWX, 'cause I can't see the benefit. The PTC strategy works fine and goes 1:1 like real world.

But you can do with your system, whatever you want.

Re: Can we design Multi Body Part../?

Not seen anything for multi-body. Would be useful. However I have devised a work around by using an assemby of a part and tracing the relevent geometry into the new part and then drop the references PDQ as the next time you load up the part as stand alone all the references would not be there and the whole lot will crash. Sorry PTC but Solid Edge wins here again with the syncronous technology, multi-body modelling, automomous re-referencing, again and again, time is saved in bucket loads.