Leverage of patterns included in copy geom

[PrebenJ]

Using top down design we distribute design to consuming levels with copy publish / copy geom / merge and with that have good control.

But when using patterns the intelligence of these are lost in the distribution so it's not possible to create eg. reference patterns.

As described in the attached powerpoint it's possible to distribute feature(s) which are in pattern ( so not the patteren in itself) and then pattern on recieving side but I see that as a workaround and not a solution.

[S_Edgenear]

One way to possible achieve that, is to Copy entire sketches when using the Copy Geometry command. If the patterns are ccreated using points or coordys defined inside a sketch, that way we could match a source pattern with a target part pattern, even if we could not construct a reference geometry pattern, but at least, we would have the option to quickly create a point or csys pattern defined inside the sketch.

[tbraxton]

It is currently possible to propagate pattern design intent through copy geometry features.

Create a copy geometry feature that includes only the pattern leader of the pattern you intend to reference. This copy geom must not include any other references.

Select this newly created copy geom feature and pattern it using reference type pattern. You will then get a ref pattern in the model driven through the copy geom feature from the master model.

[S_Edgenear]

I've tried this suggestion in Creo 7, and t works, but only if we copy surface geometry to drive the pattern. I tried to make a pattern using a sketch point pattern to pattern surface geometry, and if I copy geometry the original point of the sketch, I cannot make a reference pattern of the copy geometry. But if I copy the surfaces of the leader memmber of the pattern, then in the derived part I cann reference pattern the copy geometry of the surfaces of the leader memmber of the start part pattern.

So, it kind of works, but it's a pitty that we still cannot copy entire sketches using copy geometry to drive point patterns. Most of the skeletons only define points, axis, planes, not necessarily surface geometry to be able to push the information downstream for derived parts. This way it forces us to always generate on the patterned surface geometry to derive to dependent parts.

Anyway, thank you for the tip tbraxton.

[tbraxton]

@S_Edgenear , 

If I understand your description above correctly, it should be possible to implement what your trying to do. To fully grasp the issue you are faced with in your test case I would need to see the files. If you were to post a new topic in the part design section of the community and post your test model then I could take a look at the models. I may be able to figure out the issue.

I just did a quick test using a sketch driven point pattern in a master model and used an external copy geometry to propagate the pattern to a derivative part and it works as expected. I was able to use reference pattern in the derivative part driven by the ECG pattern leader. No surfaces are involved in this test case and it works.