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Copy Geom Skeletons

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Copy Geom Skeletons



Looking for the Proe/Cons of copy geom features in skeletons.

Cons I have experienced:
My experience of routing cables on copy geometry, even independent has not
seemed worth the drawbacks.
Not able to duplicate objects, components replaced in asm's do not update.
Even the geom independent function
keeps the global ref.

Pros
very quick way to route cables
Chance of a duplicate objects is probably slim

The skeletons I create are always independent surfaces etc. years of
surfacing experience, no big deal to thrown in surfs.

Looking for opinions, generally what are the majority using out there

Douglas K. Bowles
Advanced Systems Harn/Des
520-665-7082 Office
520-490-9395 Cell
-


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12 REPLIES 12

RE: Copy Geom Skeletons

Most companies use datum points from coordinate system..to avoid a dependency. I personally..use skeletons to get my bearings, and then delete them after creating points. The one thing you do not want to do..is build a relationship to a top level model.


-Dustin

RE: Copy Geom Skeletons



In Reply to Dustin Crawford:



Most companies use datum points from coordinate system..to avoid a dependency. I personally..use skeletons to get my bearings, and then delete them after creating points. The one thing you do not want to do..is build a relationship to a top level model.


-Dustin




I respectfully have to disagree with Dustin on this point. The majority of companies I've ever worked with have simply routed right on top of their copy geometry (or worse on the assembly itself). Some have used the "points" method but in my experience, this isn't common.


Either way, both of those techniques are terrifyingly bad. As Douglas pointed out, copy geometry has limitations. Although some of these limitations can be mitigated, routing directly on the Copy Geom is still a bad idea. As for the points method, I find it stunning that people would resort to manipulating hoardes of datum points to control their harnesses. At Planet PTC 2012, I presented a technique I've used for at least 10 years to control harnesses easily without datum points. Even after all the progress we've made with the cabling package, the same techniques still hold value.


I agree you want to avoid building a relationship at the top level assembly... but otherwise I believe there are better ways to route a harness, control it, and modify it without jumping through hoops to do it.


Regards,


-Brian

Copy Geom Skeletons

Brian,

Can you share your technique on how to route harness that you've presented at Planet PTC 2012?

Sincerely,

Sun C. Lam
Electrical Engineering Integration
[cid:image001.jpg@01CD65AD.44A983C0]
(858) 312-3749
sun.lam@uav.com<">mailto:john.harper@uav.com>

Copy Geom Skeletons

I use a dummy part that allows me to route intersections in space. It
looks like this..

If you cant see the image it is simply a bunch of datum curves heading off
in 6 directions with datum axis on them as well as some datum curves in
45° increments for DIR input if you need them.

I package them in the assy at each junction, move them around freely, and
fix them at a later date.
You can make it flexible too for changing sizes of bundles.

MERCURY
MerCruiser
Pete Pickett II
Design Engineer III Office: 405.332.2032

Copy Geom Skeletons


Just checking to see others current methods.
I use re-created simplified surfaces in a skeleton and sometimes datum
planes, or convert to offset (default csys).
Years of surfacing experience have made it an easy option for me to
re-create most any surface
Seems to be best to have users use their own perferred methods in most
applications.

I always use reference viewer to make sure no global ref's exist



Douglas K. Bowles
Advanced Systems Harn/Des
520-545-6456 Office
520-490-9395 Cell
-


PRIVACY ACT NOTICE: This communication may contain privileged or other
Official information. If you are not the intended recipient or believe
that you have received this communication in error, please reply to the
sender indicating that fact and delete the copy you received. It is a
violation of Federal Law to print, copy, retransmit, disseminate, or
otherwise use this information without prior authorization.


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Copy Geom Skeletons

"Seems to be best to have users use their own perferred methods in most
applications."

This sure sounds like a great company standard..

Scott






Copy Geom Skeletons

Hi Sun & Scott...

I'll be happy to share my technique. Let me pull together some documentation and I'll respond to the group.

Thanks!
-Brian

Brian K. Martin
Sr. Mechanical/Application Engineer
SGT, Inc. under contract to
NASA Goddard Space Flight Center

301.286.0059 (NASA Office)
443.421.2532 (Cell)
-

Copy Geom Skeletons

Referring to routing methods only, Some route on dtm planes, skeletons etc.
Standards are in the design

Douglas K. Bowles
Advanced Systems Harn/Des
520-545-6456 Office
520-490-9395 Cell
-


PRIVACY ACT NOTICE: This communication may contain privileged or other
Official information. If you are not the intended recipient or believe
that you have received this communication in error, please reply to the
sender indicating that fact and delete the copy you received. It is a
violation of Federal Law to print, copy, retransmit, disseminate, or
otherwise use this information without prior authorization.


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RSD and Creo Schematics Comparison

Hi All,
Does anyone has comparison matrix between RSD 8.0/9.0 and Creo Schematics 1.0/2.0?
Thanks,
Sun