size in brackets - which their use/meaning?

[braudo]

Bye to all,
I am a designer and in my technical office there is an ongoing debate, concerning the use of brackets in quotas.

from what I know, inserting a dimension in brackets means that that dimension is not governed by the regime of tolerance of the cartilage,
that can be fine, medium or gross. On the contrary, inserting a dimension without brackets means that that dimension, where no tolerance is mentioned, will be meant to be tolerated according to the norm cited by the cartilage.

Do you agree with what I said?

or do you have any further information? maybe quoted in some rule.

thanks again for your collaboration, for any contribution on the subject.

emanuele

 

[MassiVonWeizen]

it has nothing to do with tolerances even because if there is a quota this must have its tolerance
the quota in brackets means that it is not functional to the operationhttps://www.google.it/url?sa=t&rct=.../_7_atura.pdf&usg=aovvaw1p1q3hi6cjgb3hnoebuz6https://it.wikipedia.org/wiki/quota_di_riferimentohttps://www.cad3d.it/forum1/threads/13952-valore-quota-tra-parentesi?p=117685&viewfull=1#post117685

 

[braudo]

Of course all the dimensions are governed by a tolerance, the doubt was born if on an overall it is not put in the brackets or the tolerance, then it was necessary to consider that of cartilage.

at this point it is clear the speech of functionality or not of the size.

Thank you.

 

[abelli12]

confirm: they are non-functional dimensions (in fact the brackets are called auxiliary quotas).

 

[meccanicamg]

the size in brackets has the meaning that to realize the piece you need to use the other quotas. that in parentheses serves to help those who work to make his centring reasonings for example on carpenters ...the milling quotas are those from the processing reference but you can put the difference between the processing and the other extreme that is purely of "purely theoretical indication" and should not be subject to any tolerance or respect of this quota in parentheses.

 

[braudo]

Very well.
thank you all for the answer.