On Feb 5, 2:53=A0pm, ChrisG <christopher.gosn...@[EMAIL PROTECTED]
> wrote:
> On Jan 24, 5:30 pm, graminator <graha...@[EMAIL PROTECTED]
> wrote:
>
> > When you have an assembly and you need to keep a relation****p between
> > parts (say for example you have a molded enclosure with screw bosses)
> > how do you keep your parts parametric? Do you:
>
> > 1. Use Copy Geometry from a master part in your assembly;
> > 2. Use External Copy Geom and publish from a part that is not in your
> > assembly;
> > 3. Use copy and paste from a master part in your assembly;
> > 4. Use >Edit >Component Operations >Merge =A0and merge an entire
master
> > part into your child part.
>
> > Why do you prefer your particular method?
>
> I think that for mold design you really want to look into something
> like TDO (Tool design Option) =A0This reinforces the master-model
> concept and works initially with surfaces. =A0TDO can streamline the
> process quite a but, but needs the .mfg file in session to force
> updates (I think)
>
> I use Pro-E for forge tooling design with a master cavity model that
> has a co-ord system included for tooling placement. =A0The outer skin
> geometry is surfaces that are 'published'. =A0The tooling then uses
> external-copy-geom to include the published geometry from the cavity
> in the die model as surfaces. =A0The advantage of using published
> geometry is that you can add or subtract surface patches without
> bombing downstream features that depend on the published geometry as a
> whole.
>
> Using surfaces vs. solids avoids the problems associated with matching
> accuracies between solids, especially of you go on to create die EDM
> electrodes from the die models.
>
> Now, none of this works unless you have the right config,pro options
> turned on to propagate changes and update models.
>
> I don't use Interlink/PDMlink, so I can't comment on how that affects
> the mix.
>
> I could give you an example if you like,
> Chris Gosnell
Chris, I design molded parts, not the tools. Our products are often
fairly organic, so the exterior shape is made with one or more
boundary blends or swept blends around a part line. I use a master
file to keep overall shape related between the final molded parts and
also things like screw bosses, windows, keypad openings etc etc.
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