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Posts: 2
Registered: ‎02-25-2008
Message 1 of 4 (48 Views)

Question on retro active changes to sub-assemblies

48 Views, 3 Replies
03-11-2008 11:10 AM
Hi all,
This is probably so basic that your laughing, but I have brought 2 sub assemblies together in Inv 2008 in order to do a place and fit. I sketched on a surface of one of the sub assemblies and projected the desired holes needed from another sub assembly in the file. Every thing works well, but I am interested in "retro actively" changing the original reference file to represent these new holes....Like I said, I am sure that this is comically simple and I am just missing it....
Thanks,
KC
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Posts: 5,400
Registered: ‎09-21-2004
Message 2 of 4 (48 Views)

Re: Question on retro active changes to sub-assemblies

03-11-2008 11:16 AM in reply to: kcandthez
>I sketched on a surface of one of the sub assemblies

you made an assembly feature, you cannot make assembly features into part features and parts do not show assembly features

>projected the desired holes needed from another sub assembly in the file

This isn't really the best way to do this, cross part/assembly projection can be a little flakey at times.
New Member
Posts: 2
Registered: ‎02-25-2008
Message 3 of 4 (48 Views)

Re: Question on retro active changes to sub-assemblies

03-12-2008 11:39 AM in reply to: kcandthez
Oh well,
I appreciate the info...
Thanks,
KC
New Member
Posts: 2
Registered: ‎03-27-2007
Message 4 of 4 (48 Views)

Re: Question on retro active changes to sub-assemblies

03-12-2008 01:23 PM in reply to: kcandthez
Greetings,
Instead of projecting from one subassembly to another, I usually use derived parts to make certain that hole patterns and mating features match. Recently, I modeled an assembly that had two housings, each one filled with electronics. The two housings mate with each other (a hole pattern and a tongue-and-groove seal) and there are connectors in the housings that mate with each other. When I created the lower housing, created one sketch that located all of the mating features. When I created the upper housing, I created a derived component and imported that sketch as my initial sketch.

If you have the parts for the two housings, you can still create a sketch in the first one to locate the mating features and then import the sketch into the second one. You just need to choose your sketch origin wisely; you might choose a hole or corner that is already common to both parts.

If you do this correctly, the mating features will be associative between the two parts.

This is much easier to do if you plan from the start to make the parts mate, but you can add it later.

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