h6/n5 coupling uncertain or interference?

[ConfaMiky]

Good morning to all,
I have a doubt about the h6/n5 coupling. I have a 40 h6/n5 coupling and if I look at the h theory with n would be uncertain while from calculations I find myself in interference. You could help me out.
Thank you very much

 

[MassiVonWeizen]

in the forum there is an excel file to view the type of coupling according to tolerances.
should call mating viewer.however it is enough to write the minimum and maximum dimensions to realize what kind of coupling it is
40 h
min 40,00 min 40,017
max 40,016 max 40,024
speculating to keep the values to the extremes you have:
in a case hole max 40,016 and tree minimum 40,017 (+0,001)
in the opposite case minimum hole 40,00 and maximum tree 40,024 (+0,024)

 

[MassiVonWeizen]

that then tolerance calculators find them also online, just try
in the forum https://www.cad3d.it/forum1/resources/tolleranze-per-alberi-e-fori.18/the excel cited https://www.cad3d.it/forum1/threads/visualizzatore-di-tolleranze-iso-per-accoppiamenti.14550/
in rete:

PFERD TOOLS

www.pferd.com

Tolleranze foro-albero

www.edutecnica.it

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www.bossard.com

 

[ConfaMiky]

Thank you very much for the answer. There are various calculators and they say that there is interference, what I don't understand is why in images on theory indicate that h with n is uncertain?

http://www.edutecnica.it/meccanica/tolleranze/13.png

 

[MassiVonWeizen]

How come in the images on theory indicate that h with n is uncertain?

h7/n6 is uncertain because it has maximum interference 0.033 and maximum play 0.008.

 

[meccanicamg]

h7/n6 is uncertain because it has maximum interference 0.033 and maximum play 0.008.

so it can touch or not touch....dead uncertain.

 

[MassiVonWeizen]

so it can touch or not touch....dead uncertain.

Isn't that what I wrote?

 

[meccanicamg]

Isn't that what I wrote?

exactly what you wrote.
was to mark the Italian.

 

[MassiVonWeizen]

was to mark the Italian.

I will try to improve

 

[MassiVonWeizen]

@confamiky Prego!!!

 

[ConfaMiky]

Thank you so much now I think I understand.
the images of the theory tell you that usually h with n is uncertain, it is to me then calculate if it is actually uncertain or if in interference.
Thank you.

 

[meccanicamg]

Thank you so much now I think I understand.
the images of the theory tell you that usually h with n is uncertain, it is to me then calculate if it is actually uncertain or if in interference.
Thank you.

you must not be the certain to say that it is uncertain. then if you mix and you're lucky pass... .