Default Profile on an ISO 8015 drawing

[Andera]

How the Independency principle per ISO 8015 will interrelate with default profile specified via a note on a drawing? Otherwise stated is it acceptable / indorsed to have a default profile note on an ISO GPS drawing?

And since simultaneous requirement (equivalent of ASME Y14.5) is not automatically enforced how the features defined with the general profile will interdepend of each other?

 

[greenimi]

I would adventure and say that in ISO default profile is not a recommended practice. Never seen any examples in ISO standards (granted I do have a limited exposure to these standards).

From here and say it is a forbidden approach probably it's way too much, but not sure myself why no examples of default profile in ISO.

 

[greenimi]

Any other opinion?

 

[CheckerHater]

First, there are way too many "profiles" to consider:
With or without reference to the datum
With or without added modifiers like "common feature / separate features", etc
With or without added modifiers like "all around / all over", etc
With or without additional fine tuning like "unequally disposed"
Every one of them will interrelate with Independence principle differently:

(this would be one of the most typical - "independent features / common zone")
So one should understand there is no place for some magical "default profile" - there is always some specific kind of profile.
Also, according to ISO invocation principle nothing is default - any requirement must be explicitly specified on the drawing.
It is possible to formulate your requirement as a note, but result still be vary.
(Does it count as an opinion? )

"For every expert there is an equal and opposite expert"
Arthur C. Clarke Profiles of the future

 

[aniiben]

Thank you CH.
And one related question: what drawbacks do you see of a general profile note such
for example:
Profile tol zone CZ to A primary, B secondary and C tertiary?

How this note could be interpreted (and results posible to vary) differently within ISO? (I assume you are saying that different end users might have different understandings and I am not saying it doesn't but I honestly do not know how).

 

[greenimi]

CheckerHater,

(Does it count as an opinion? smile)

Yes, it does count.

From your experience, did you see/encountered ISO drawings where the profile has been used as a general note to define undimensioned features?
(from your company or some other customers). I do not know I've ever seen one.

Did you see any examples promoted by the any ISO standards? If yes, which one?

What would be your experience/ recommendation in this problem.