Stack-up concept 6

[aniiben]

I would like to get a little help in understanding the stackup concept on the cases below. I have a hard time grasping the concept on how the X maximum and X minimum are to be CORRECTLY calculated (maximum and minimum distance between OD and ID). The numbers (X max. and x min.) are just all over the spectrum....
I have studied some of the examples found on eng.-tips, but looks like none of the existing shown cases are helping. Just some small tips and tricks on how to judge or think them would be really needed.
Thank you
Ani

 

[pmarc]

This should help:

http://files.engineering.com/getfil...73e5ce700e1&file=Tolerance_stack_wall_thk.pdf

 

[greenimi]

Thank you very much pmarc.
Happy New Year !

 

[aniiben]

I am really impressed and for the moment I would just say THANK YOU pmarc.

 

[pmarc]

Happy New Year! And glad I could help, of course.

 

[pylfrm]

The drawings posted by pmarc show pretty much the same geometry I was imagining. They look better that what I would have come up with, so it's probably for the best that I wasn't feeling inspired.

The only thing I can add is to note that the minimum and maximum can both exist simultaneously on a single part for each case.


pylfrm