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"Make From" Parts in assemblies - Wavelink vs Promote Body vs Assembly Cut Vs Dumb solids

Creator
Creator

We are attempting to standardize the way design "make from" and assembly modified parts in NX. An example would include bringing a standard part Hex nut and adding lockwire holes, a match drilled assembly, or added material like spraying on foam insulation. We are using NX integrated with TC.

 

What I am trying to achieve is

  1. Accurate Geometry
  2. Mass accurate models
  3. CAD accurate BOMs
  4. Minimize load times and memory usage at higher assemblies.

List of the Pros and Cons I can think of are below. Does anyone have additional thoughts or recommendations?

 

Also a few other questions I had are:

  1. Does anyone know if there are plans to deprecate Promote body or assebmly cut?
  2. Does anyone have a good metric on how much memory associative links use and if wavelink vs promote vs assembly cut is different?

1) Wavelink a copy of the component and make component Non-Geometric

     Pros

  • Associative
  • Correct mass properties
  • Allows subtractive and additive processes
  • Allows flexbility to toggle link live or broken to save memory but allow designers to make live again to get newest geometry

     Cons

  • If you roll the feature tree above the promote the component isn't visible unless non-geometric component is toggled back to geometric.
  • Uses memory at higher assemblies to load all the associations if link is live

2) Promote Body

    Pros

  • Associative
  • Reuses the same solid keeping mass properties
  • Allows subtractive and additive processes
  • Simple, 1 feature and action by the designer

    Con

  • If you roll the feature tree above the promote the component isn't visible
  • Uses memory at higher assemblies to load all the associations

3) Assembly Cut

    Pros

  • Associative
  • Reuses the same solid keeping mass properties

    Cons

  • Only allows subtractive processes
  • Uses memory at higher assemblies to load all the associations

4) Dumb solids and non-geometric component

    Pros

  • No memory issues
  • Correct Mass properties (has to be reassigned but still possible)

     Cons

  • Non-associative
  • Hard to tell if geometry has changed

Based on this I am leaning toward wavelink with non-geo or promote body. I almost wonder if promote is just a wrapper on the steps I mentioned above  for wavelink because they act basically the same.

 

The differences between the 2 I see are:

Promote is simple. 1 click for the designer and they can start modeling.

Wavelink has the ability to break the link and save memory (potentially automatically at release?)

 

What do yall think?

6 REPLIES

Re: "Make From" Parts in assemblies - Wavelink vs Promote Body vs Assembly Cut Vs Dumb so

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

I'm not sure what you mean by "If you roll the feature tree above the promote the component isn't visible"

 

I'm assuming in the parent part (where you alter the geometry from the "standard" part) the WAVE link or promote would be the first feature in the Part navigator (MAYBE a Datum CSYS above it)?

 

Ken Akerboom Sr CAx Systems Engr, Moog, Inc.
Production: NX10.0.3.5 MP16/TC11.2
I'd rather be e-steamed than e-diseaseled


Re: "Make From" Parts in assemblies - Wavelink vs Promote Body vs Assembly Cut Vs Dumb so

Creator
Creator

By that I mean to make a feature above the linked body the current feature. And yes in general it would/ probably should be the first feature. Just a note on how it works and can confuse users.

Highlighted

Re: "Make From" Parts in assemblies - Wavelink vs Promote Body vs Assembly Cut Vs Dumb so

Gears Phenom Gears Phenom
Gears Phenom

This was a 'best practices", that I wrote up.  The intent was to try to explain the differences, similarities, and uses for both wave and promote. and it is far from gospel, and I am always open to constructive input, suggestions, criticisms, etc.  

 

 

-Dave
NX 11 | Teamcenter 11 | Windows 10

Re: "Make From" Parts in assemblies - Wavelink vs Promote Body vs Assembly Cut Vs Dumb so

Creator
Creator

Thanks this is a great summary. I think this is pretty much the direction we are going to follow. 

 

Only question is where you think assembly cut fits in? or is pretty much just better practice to use promote?

Re: "Make From" Parts in assemblies - Wavelink vs Promote Body vs Assembly Cut Vs Dumb so

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

@Alexander_Vu wrote:

Thanks this is a great summary. I think this is pretty much the direction we are going to follow. 

 

Only question is where you think assembly cut fits in? or is pretty much just better practice to use promote?


The assembly cut feature makes use of a promote feature behind the scenes. It essentially packages up a promote body and subtract command into a single feature.

Re: "Make From" Parts in assemblies - Wavelink vs Promote Body vs Assembly Cut Vs Dumb so

Genius
Genius

We frequently use promote body command for welded assemblies that need to be machined or drilled after welding. I think is the best aproach.