patterns in copied sketches 1

[dtoromanov]

i'm working in a created in place part in an assembly.

i copied an assy sketch into the part. it worked fine and i was able to create a linked pattern. when i tested it and shut positions in the pattern on and off in the asembly, they did not update in the part. i tried manually updating all links and it did not work.

i figure i can just include associatively but changes would take longer as i have to go and modifiy several parts using this pattern (bottom, top and rackmount bracket, plus pressed-nuts and screws).

your assistance is appreciated,

thanks,
dimitar

 

[donyoung]

Dimitar,
so you copied the sketch that is the base for a pattern from assy to part.
Within part you created a pattern based on that sketch. Now you have one
pattern in the assy and one pattern in the part both share one sketch
but are otherwise completely different features. Therefore the drop of
an occurrence in the assy's pattern won't be propagated to the part's pattern.
A change of the sketch (the profile itself), however, will be propagated
i.e number of occurrences in either x or y direction or the spacing if
the occurrences

dy

 

[dtoromanov]

thanks, dy!

i was assuming that, since you can't open a copied sketch for editing, it updates all its elements from the parent sketch, including the active occurence locations.

so, is there an automated way to track that across an assy or i have to create individual patterns attached to included lines in each part and manually update them should a need be?

thanks a lot,
dimitar

 

[fredericmenage]

Hi,

I don't know if that's applicable for you but my suggestion would be to create the pattern of features (holes?) in a part instead of the asm and then add all the parts that are mounted in those holes with the pattern parts command in the asm.

If there are other parts that require features that need to be linked to that pattern, I would use the 'include' command with the 'include internal face loops' option and 'single face' selection. Just make the external contour a construction. This way you will select everything quickly and it will update automatically if a hole is added in the original pattern.

Note: since that selection method selects all the internal contours, you might need to make an interpart copy of the body of the parent part and simplify it with the command 'delete holes' (option 'by operator') for example.

HTH,

Fred