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JasonPensack1-Visitor
1-Visitor
September 20, 2013
Question

Mill windows and new reference model

  • September 20, 2013
  • 3 replies
  • 2838 views

I have a complex part that I programmed from a STEP file. This part is an aerospace/defense part so I can only recieve STEP files, not native CAD files. Since the last time we made the parts, there was a rev change that made some significant changes to the geometry. Mainly adding and removing material in certain locations. I could just lay the new model of the old model and make the needed changes to my profile milling and trajectory milling sequnces. The problem that I am having is that now my mill windows are seeing both parts.

Is there a way to tell the mill windows to ignore one of the refernce models? Or any other way to achieve what I am looking for?

I am using CREO 2.0 M070.... Thanks in advance!


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3 replies

S
SteveLucas1-Visitor
1-Visitor
September 20, 2013

Jason,

What I do is make a copy of your manufacturing file with the name of the new rev added to the file name (if you want to keep the original file).

Close the original file and open the new file (erase memory before opening the new)

the right click on the old part and select replace and then replace the old part with the newer revision with the same assembly constraints.

J
JasonPensack1-VisitorAuthor
1-Visitor
September 20, 2013

I have tried this but all of my references to the old model fail.

S
SteveLucas1-Visitor
1-Visitor
September 23, 2013

Jason,

Usually the mill window will fail because it references features in the old part. you will have to go and update and reference the window to the new part or if possible reference all your windows to the default datums so they don't fail when replaced.

J
JasonPensack1-VisitorAuthor
1-Visitor
May 7, 2014

I figured this one out so I figured I would share.

Using Simplified Reps I can make this work. If I add an updated model with design changes, I can exclude my old model and the mill windows will only look at my current model. This works great because any mates or references (such as sketches, profiles, volumes, etc.) to my old model are still fully intact and do not fail. Now if the design change affects one of these references than I will have to open the feature and modify it to the new model but this is not a big deal compared to replacing every single reference to the old model because two or three mill windows are looking at two different models.

The only problem that I ran into is that if I create a new Rep then when I use Play Path the tool doesn't show up. (I'm not sure if this is a bug or not) So to get the tool to show up I just exclude the old model in my Default Rep instead of creating a new Rep.

G
gkoch1-Visitor
1-Visitor
May 12, 2014

When you say: "This part is an aerospace/defense part so I can only recieve STEP files, not native CAD files."

Does this mean, you get a neutral format, because they do not want to provide the full know-how or because they use a different application?

Because if it it about the former and the sender has Creo, too, he could provide you with neutral file format instead of STEP.

This format will also have all logic removed, but you can enable ATB to track changes, when you receive a new export file. This will help keeping the references of geometries that have not changed.

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