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Holes, chamfer, edge blends... at the assembly level

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Javiduc

Mechanical
Mar 2, 2016
52
Machining an assembly after its components are welded is very common in a lot of industries as machinery manufacturing... I was used to make my models that way with other software packages. I mean, I was able to make cut-outs, holes, chamfers… to the components geometry and weld beads in the assembly level and I was able to choose where to store these features at the assembly level or at the part level, I obviously choose at the assembly level for this purpose because it was the way I needed to make the drawings, individual components without machining operations and assembly with them, in fact I used an assembly inside the assembly just to make a drafting of the assembly without machining for the welding shop. Sometimes, I have to make several holes which cut through different parts (in the same feature one hole can go through two of three plates or a different hole of the same feature can go through different parts that other holes).
With NX I can do assembly cuts but I can’t do the same for holes, chamfers, feature patterns... For doing that I need to promote body, and then make the feature for each individual body which is a problem in the case of holes I previously described where I need to do a lot of promote body and hole features to do the same I was able to do with just one feature in other. One good thing about promote body in NX is that I can model a bend at the assembly level after welding it which is not very common but sometimes I do.
I have been told that promote body is a feature that may be deleted from future NX releases and that I should use wave links to do that but, I think wave links duplicate the geometry as the components are still in the assembly and other problems appears like duplicating mass in weight calculation…
I think NX could solve it with features like assembly cuts but for holes, chamfers… or maybe that the feature you can apply to bodies inside the assembly file could be applied for the bodies of the components directly as assembly cut does. I would like to ask you what do you think about that, maybe I am wrong and there is a better approach for this kind of features.
 
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For creating holes through multiple parts at the assembly level, choose the "hole series" option in the hole command.

I don't think the "promote body" command is going away any time soon (if ever), as it is used internally for the assembly cut (and possibly the hole series) command.

www.nxjournaling.com
 
Hello cowski, thank you for your answer.

With hole series I don't know how to make threaded holes to different parts. I mean that the same hole has threads in different parts.

Hole series geometry are stored in the assembly or in the part? I need the geometry to be stored in the asssembly

 
I've only used "hole series" a handful of times, but I'm pretty sure that it is stored at the assembly level. I do know that it allows you to add a threaded hole to one part and clearance holes to multiple other parts in the same feature. Have a look at your local NX help or, if you have a Siemens community login, look here:

www.nxjournaling.com
 
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