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I have found skeletons to be useful copy geometry. One of the problem we constantly run into is designers copying geometry from one model to another without considering the top down design workflow. We end up with models that appear higher in the model tree referencing features from a model lower in the model causing regeneration errors and circular references. By defining the interfaces and references in the skeleton we don't have these problems since the skeleton always the first feature in the assembly.
Everything that you can do with a skeleton model, you can do with a standard part model. Two advantages of using a skeleton model:
<LI>Pro|E automatically places a skeleton model at the top of the tree, ahead of the default assy datums.</LI>
<LI>Pro|E does not take the mass of any solid geometry in a skeleton model into account when doing mass property calculations. Most folks don't add solid geometry into their skeletons, but it's possible. If you use a standard part, that will skew your mass props values.</LI>
I have seen people do what you describe but we always have someone who ends up moving thepart fromthat position. My point was really meant as dgs pointed out in his first comment. ProE automatically puts the skeleton as the first feature in the model tree and it can't be moved.
okay thats valid, especially if you have a lot of people working on the model.
Also the person in charge of the "skeleton" or "master" should be using publish geometry only so other people dont just use anything off the skeleton model for references.
Is there anyway someone could breifly explain the steps for using (or assembling) a skeleton model? Maybe using simple shapes. I have been using ProE for a long time but don't know how and when skeleton should be used. Unfortunately our company does not invest much in ProE training so I find websites like this very benificial when it comes to learning ProE concepts. Thanks all in advance!!!
Unfortunately, for the project I'm working on they didn't assign one person to make changes to the skeleton. Anyone working on the projectcan makechanges to the skeleton model. Guidelines for modeling were created but few seem to follow them.
To create a skeleton model use the Create a component in assembly mode icon or Insert>Component>Create. One of the options you'll see is Skeleton Model.
Search ptc.com for the Top Down Design tutorial using an office chair. It illustrates the basic concepts very well. Try searching for "skeleton chair" or "top down design chair". There are several versions of the document for variousversions of Pro|E.
Top down saved me hundreds of hours on projects.I would like to make a list of success stories from using top down modeling approach but that list would be too long.
I just got back from a Denver camp trip ... 72 elk, 2 bever dams, one waterfall, ground squirrels, smoorz, and dirt road counter steering.
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