Replacement Component causes broken wave links

[ChaseWichert]

NX 7.5

I need some help with trying to figure out the best solution for what I am trying to do. Here is a little bit of background. I have an assembly that includes a component that has a complex curve surface, this surface meets up with a plate that is modeled in the assembly file. So currently, we offset lines from the a linked body of the component and offset a certain distance in a sketch in order to match the curvature of the component, and then extrude the sketch to create the plate. We have multiple components that are different sizes and have different complex curves. So we want to have trim sheet bodies in each of the components that can be used to trim the plate solid in the assembly.

So let's say that we have Assembly "C" and components "A" and "B". We have the "Plate" solid in Assembly "C", it is being trimmed by a linked sheet body from component "A". When we replace component "A" with component "B" the linked sheet body is broken. We have tried naming the extrude feature that makes the sheet body the same in both components, as well as the sheet body itself. This doesn't work. The only thing that works is if component "B" is a save as of "A" and you modify the sketch geometry.

Can anyone provide any insight into how we can do this, or if there is a better way of going about what we want to do? I have attached the models I have used to test this.

 

[JohnRBaker]

For what you're attempting, it would appear that using parts with a common 'DNA' (one created using a 'Save As' of another) is going to be, in the end, the easiest approach to take. This will provide the most reliable update since, as implied by the fact that since they are sort of 'clones' of each other, the modeling functions (the trims) still thinks it performing that same trim for 'B' that it did for 'A' since as far as it's concerned, nothings changed, even if they've moved or changed shape, from the point of view of the Trim operation, I'm trimming he same solid body using the 'same' sheet body.

John R. Baker, P.E.
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[ChaseWichert]

The problem is when we go from one class of part to another class of parts, they are not the same DNA they are the completely different sizes and drawn completely differently. Basically going from a large class to extra large class. The problem isn't the trim function it is the Linked Body. Apparently the linked body doesn't follow the names of the bodies that are linked, there is something else that appears to be hidden that is linked, and which will vary from file to file? I need to find a way to either trick NX, or somehow name the sheet body in a way that the linked body can follow for replacements. It isn't feasible to have a save as part.

 

[JohnRBaker]

First off, I hope you did all the naming BEFORE the WAVE linked bodies were created.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.

 

[ChaseWichert]

I did when I first created the files, however when I was testing different scenarios I did not...

 

[jlmuzzio]

I have read every thing about "Trim assemblies" on this site but could not find an answer for my simple problem:
I just want to cut an assembly made out of two parts inside another assembly. It seems that NX does not do that or I am making a bib mistake here. I'm trying to cut this part using a line extruded and when I click the tool Trim I cannot select the object or the part to start the process of trimming...
Could any one give me guidance? I'm using NX 8.0.2.2

 

[JohnRBaker]

Try creating a 'tool body' in the context of the Assembly which represents the volume of space that you wish to 'remove' from your Assembly and then go to...

Insert -> Combine -> Assembly Cut...

...to perform the Boolean 'subtract' which will trim away your assembly. Note that the these 'trims' will only occur at the Assembly level, that is the original component parts will remain unchanged and this 'Cut' feature will only exist in the context of your Assembly.

Also, using PMI you can create 'Section Views' of your assembly (or any other part for that matter) which again will only exist in the context of the PMI View.

John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
Siemens PLM:
UG/NX Museum:

To an Engineer, the glass is twice as big as it needs to be.