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Master Model & Design Intent Principles

Master Model & Design Intent Principles

Master Model & Design Intent Principles

(OP)
Hi,

  I'm curious to know how our fellow UG users (or companies) define the following, as it pertains to Unigraphics:

  * Master Model


  * Design Intent

Thanks

QuEST / GE Mechanical Designer

RE: Master Model & Design Intent Principles

Master model is a concept that can embody more that this but in jargon supplied largely by the product documentation and advertising material at various different stages it has a specific meaning to the way CAD data is structured. Under master model concept the models, assemblies, drawings and machining etc are kept in separate files. It is a very good idea and one which industry has largely taken up in the past ten years or so since assembly functionality really became a big part of what UG and later NX has to offer.

Your second question about Design Intent could well be a loaded one depending on who is asking and answering at the time. Or to put it another way Design Intent as opposed to what? It could be Production Intent, or whatever somebody is prepared to sign off on that differs however greatly from the CAD. The best answer and the only one that most CAD users would stand for is that the CAD contains a model designed in the nominal or ideal condition, and the drawing and/or applied tolerance attributes are used to define tolerances describing the degree by which production results may be expected to vary. In this way the design is fully specified, and production can determine whether or not they are meeting those requirements.

In my experience production people often use terms like "Design Intent" where the specification fails them or they fail to meet it. I have learned to be wary of such terminology.

On the other hand there are times during the design process when the question does differ and designers amongst themselves will use the term "Design Intent" to talk about the direction in which they intend to take the design. I'm perfectly happy to have the term used in that context as it usually means that as long as there is an agreed understanding of the design intent then I can have some freedom to design my idea of the best way to go about achieving it.

Best Regards

Hudson

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