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Need Assembly Help

I'm revising an assembly with about 30 items and these are my questions:

  • I'm trying to move one of the items, listed 3rd or 4th from the top. I need to constrain it with another item down the list, almost at the bottom. When I try to edit the definition and try to pick the surfaces to constrain, all the parts listed below dissapear. How can I constrain my part with the other if I can't see them?

  • I tried to erase the part that needs to be constrained and reinsert it, so it is in the bottom ot the list. But, when I click to erase only that one part, it wants to erase all the parts below. Is like starting the assembly all over again.

Hopefully my explanation is clear enough to get some help.

Thank you.

Reply to
whereareyou
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Have you tried 'restructure' for this type of problem? Do 'Edit>Restructure', pick the component to move to another assembly, OK, pick the destination, OK and Done. Component, references, etc. moved.

David Janes

Reply to
David Janes

could you constrain the one at the bottom to some neutral datum, drag this one above your target, then redefine your target, once the intended reference is above in the history tree?

Reply to
David Janes

Or delete the constratints of the component you wish to redefine, leaving it packaged, than drag it to after the new constraining component, then create new constraints

Reply to
John Wade

I tried this, but it didn't help at all.

Reply to
CADUSER

You have to understand that most model trees (Pro is not alone in this) are 'history-based'. That means that you can't constrain a part or a feature to something that appears after it.

You should redefine your component at the end of the model tree and assemble it to "Default". Then, drag it to a position above the 4th part in the assembly in the Model Tree. Now, redefine it again to mate it to something useful. Then redefine the 5th part (which USED to be the 4th part) to mate it to the part you have brought up from the bottom.

If that is not theoretically possible, then you have to use Mechanism contraints to solve the locations, since you cannot have both parts dependent upon each other for their positioning in 'normal' assembly.

Regards

snipped-for-privacy@XXX.COM wrote:

Reply to
peterbrown77

Delete the component at the bottom, slide the insert bar above component 3 or 4, insert the component that was at the bottom ahead of 3 or 4, then redefine 3 or 4 so it is tied to the new 2 or 3. This will work if the component at the bottom is not part of a sub-assembly. If it were, you'd need to restructure first, get it into the same level as the part you want it ahead of.

David Janes

Reply to
David Janes

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