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I don't think that there is, but is there a way to take a nominal model with tolerances and automatically create an LMC/MMC model? I don't want to have to go through the whole model and recalculate dimensions. Thanks.
appinmi: LLM= Least Material Condition
MMC= Maximum Material Condition
damiaptr:
Thanks, but I think you misunderstand my question. I know how to put the symbols into a GTOL, but I want to make two separate models based on the same nominal model with the tolerances. For example, I want to take a model that is drawn to "spec" with tolerances, and then create another two models; one that takes all the tolerances to LMC, and another model that puts them all at MMC. If it were a simple model it wouldn't be a problem, but it's a reasonably complex model that I'd rather not sit there and change every dimension on every feature twice, on top of having to figure out whether to go to the higher or lower tolerance based on how much it removes, etc.
I don't know of anyway to do this automatically. The only way that I can think of, is to create a family table. One instance is LMS, and the other MMC. Put the dimensions that you need to alter into the family table, and change them there. It still takes time, but is better than having 3 models.
You can change the size that Pro/E regens the geometry within the tolerances by going to Edit/Setup/Dim Bound. Then you can set all dimensions or just selected dimensions to Upper, Middle, Lower or Nominal (the default) limits. You can also use the Dim Bnd Table to create MMC or LMC (or whatever) states that you can toggle in and out of.
Note that Middle & Nominal are the same for symmetric tolerances but not for asymmetric tolerances. If you have 10+2/-0 set to nominal it regens at 10 but set to middle it regens at 11. The dimensions change colors to visually identify that they are no longer nominal but they do not change values, only draft dimensions will show the changed geometry.
Note also that selecting all dimensions and setting them to Upper does not necessarily create an MMC condition, holes will have to be set to their lower limit for MMC. Some dimensioning schemes may not have any combination of dimbound settings that show the true MMC or LMC part envelope.
If I need to make a drawing for an optical comparitor gage with LMC, MMC & nominal geometry all visible, I set the model to the MMC condition, create draft geometry with the "use edge" function, repeat at LMC and then change the model back to nominal.
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