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Re: Understanding assembly relations

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

My .02 is that unless these parts are going to be used repeatedly in various designs and projects then, yes, spend the apparently exorbitant time to fix it. If it's a one-off design and the draft comes out OK then constrain it in a way that doesn't conflict and get on with your job. There's no sense in that case chasing down a 5th, 6th, 7th, whatever decimal place issue if the thing will work the way it is.

Unless you have the time. It can be a good learning experience.

Bruce Shand
SE2019 MP5 - Insight - Win10 - K4200

Re: Understanding assembly relations

Gears Phenom Gears Phenom
Gears Phenom

ok, wow... I cannot find the error, but I can prove it is there...   

 

maybe a better man than I can help us track down the error.

 

My proof is this...   using other related commands to fully constrain the 2 parts...

 

I then make the adapter a sync part and create the 3D concentric relate command,  thus modifying the parts geometry...

 

thereafter I can create the 2 axial aligns...  

 

there is some very minute error in one of these parts.

 

personally,   I would move along...   your manufacturing drawing tolerances will cover this in reality...

 

Theory vs Reality...   

 

a good challenge here... 

 

A beer on me at the next SEU for he (or she) who solves this by finding the error in either of the parts geometry... 

 

Matt Johnson
Solid Edge Certified Professional
Solid Edge 2019 (SEEC) - Production
NX12 (Tc Integration)
Teamcenter 10.1.7

Re: Understanding assembly relations

Gears Phenom Gears Phenom
Gears Phenom

ok,, got it...  

 

and he who suggested that the hole was not centered was on the right track.

 

see image.

 

the OD and ID are shifted in the X axis by 0.3630032 mm

 

the thru hole however is inline with the Csys 0,0,0

 

2-2-2018 9-39-02 AM.png

Matt Johnson
Solid Edge Certified Professional
Solid Edge 2019 (SEEC) - Production
NX12 (Tc Integration)
Teamcenter 10.1.7

Re: Understanding assembly relations

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

HI @Johnson_BigMatt

 

 

thanks for verifying and this is wheer I mentioned to select the maller hole and then use the steering wheel to move it to the center of the bigger one.

 

In part of course, to modify the part geometry.

 

And I suppose - no, I'm confident about, that now any assembly relation will work as it should do.

 

 

regards
Wolfgang

Re: Understanding assembly relations

Gears Esteemed Contributor Gears Esteemed Contributor
Gears Esteemed Contributor

Wow. 0.36mm is quite a lot. Enjoy the beer you buy yourself, @Johnson_BigMatt.

Bruce Shand
SE2019 MP5 - Insight - Win10 - K4200

Re: Understanding assembly relations

Genius
Genius

Hi Matt und Wolfgang,

thank You for sharing my trial to detect the conflict. That was very helpful to learn to use the tools provided by SE and moreover trained my brain in the imagination of the pitfalls in the right application of assembly relations.

I didn't expect these holes to be excentered because I used the snap to key points option in placing the little bore holes,

but suspected the hole in the other part.

Thanks a lot and

best regards

Hans