dimensional tolerances creo 3.0

[Dromoaor]

Hello everyone, I am a definitely inexperienced user compared to most users of cad3d.it, nevertheless, I would like to ask a question maybe stupid.
I have component boards and I wanted to know if it was possible to draw components with creo and set quotations with the nominal value during the sketch plus min/max quotation values, so as to avoid having to redesign the component each time for the nominal value, for the min value and for the max value? ? ?
looking in the help of creo I tried to change the configuration by inserting tol_display yes, tol_num_digits_default_driven yes and mantain_limit_tol_nominal yes but I can not view the values min and max.
I intended to insert components with tolerance values to facilitate work in fem analysis, where I would like to insert components with max games since contacts/impacts play an important role.
I hope I've been clear.
good day and good work

 

[320i S]

mmmm you weren't very clear, or at least I didn't understand.

you need to be able to set standard manufacturing tolerances (grossolana, medium, fine, very fine) and specific mating tolerances (e.g. h7-g6) and then make fem calculations?

 

[Dromoaor]

mmmm you weren't very clear, or at least I didn't understand.

you need to be able to set standard manufacturing tolerances (grossolana, medium, fine, very fine) and specific mating tolerances (e.g. h7-g6) and then make fem calculations?

I try to be clearer and more precise.
I practically wanted to know if it is possible to draw to the cad with values other than the nominal quotas, for example I want to draw a rectangle with height 10 mm(nominal rate) and dimensional tolerance -0.2 & +0.5, is this possible?
This work would help me later, if possible, with the fem.

 

[320i S]

Yes, it is possible, just once you make the feature (in the interior of the sketch you can not), select the feature->modification-> select the quota you want to change the tolerance->tasto dx-> properties and open the menu to specify what tolerances you want.

find various options, quite intuitive, then specify specific symmetric tolerance values or not, or select a tolerance class, if you do not specify anything, the system should maintain general iso tolerances set in the part (on file->prepara->property model.

all this should help you if on the fem you can upload a specific pro-e/creo file if you carry step or similar, these info turns out to be lost even with the most recent formats.

 

[Dromoaor]

Yes, it is possible, just once you make the feature (in the interior of the sketch you can not), select the feature->modification-> select the quota you want to change the tolerance->tasto dx-> properties and open the menu to specify what tolerances you want.

find various options, quite intuitive, then specify specific symmetric tolerance values or not, or select a tolerance class, if you do not specify anything, the system should maintain general iso tolerances set in the part (on file->prepara->property model.

all this should help you if on the fem you can upload a specific pro-e/creo file if you carry step or similar, these info turns out to be lost even with the most recent formats.

Thank you so much for your help.
by entering the feature and clicking with the right mouse button on the quota, I can change it but I can't insert any tolerance, should I set any options in the configuration editor?

 

[320i S]

You must do "change" from the 3d environment by exploding the odds, if you enter the feature, you cannot change the properties of the quotas.

also by double-clicking on the feature

 

[Dromoaor]

You must do "change" from the 3d environment by exploding the odds, if you enter the feature, you cannot change the properties of the quotas.

also by double-clicking on the feature

I'm sorry if I'm pretty bugged,
but this key changes where it is located?click feature on the bottom right and then I can't find this option "change" :frown:
always thanks

 

[320i S]

Select the feature, right-click comes out the drop-down menu and is the black "d1"-shaped icon.

 

[Dromoaor]

Select the feature, right-click comes out the drop-down menu and is the black "d1"-shaped icon.

Thank you, I managed to set the tolerances as you explained.
However I wanted to ask you if,after I set the dimensional tolerances, you can change accordingly the solid geometry depending on that I want game max or game min or the different couplings for example tol min of one component/tol max of another, etc...
Thank you very much:

 

[320i S]

if you mean you can then analyze the cases of play/interference, it is not the correct way.
you at this stage, have to do with the design quotas, these must remain such until the end, otherwise generate deformations and probable failures to the geometry and assemblies that mount it.

the analysis of the games/interferences, should be done with the right applications, which read that tolerances were given and verify accordingly.
for basic shaft/base hole couplings, there are much simpler programs that allow you to analyze what type of tolerance you choose.

 

[calacc]

the analysis of the games/interferences, should be done with the right applications, which read that tolerances were given and verify accordingly.
for basic shaft couplings/base hole, there are much simpler programming that allow you to analyze what type of tolerance to choose

Like what? Do you know in particular?
Is there a way to do it using parameters and relationships or is it necessary to pass through an external application?

 

[320i S]

that of creo:
http://learningexchange.ptc.com/tutorial/4175/support-for-tolerance-tables-for-iso-modelsObviously not in the basic license.

 

[arni1]

Thank you, I managed to set the tolerances as you explained.
However I wanted to ask you if,after I set the dimensional tolerances, you can change accordingly the solid geometry depending on that I want game max or game min or the different couplings for example tol min of one component/tol max of another, etc...
Thank you very much:

I create or proe this can always do!
#analysis
#dimension &boundaries
and then set the size with maximum material or minimum material.
this can also be done in the assembly environment and save the various settings.
Just what you wanted to do!

unfortunately my menu is in German:cation
Arni