Locating- GDT

[farmENGR]

On the topic of 'locating' what are the three broad categories?

I think it is irregular, concentric, and plane. I could be wrong.

It is a hw question that i can't seem to find in the book or online.

thanks

 

[pmarc]

1. Could you be more specific? I am afraid I do not understand the question.

2. Which GD&T standard is the area of your concern - ASME or ISO? If I am correct in my assumptions about a point of your question, the answer you will give can have significant impact on the response you will get from us.

 

[farmENGR]

pmarc,

question does not state wheather it is of asme or iso concern.

Locating can be divided into three broad categories. I don't know these three categories. examples are: plane, irreg, radial, OR radial, irregular, and concentric. And a few other choices.

I never learned gdt in school. Wow that is not good.

thanks

 

[CheckerHater]

Location is the common term for position, coaxiality, concentricity, symmetry; if this is what you are asking.

Boy, I love where this is going!

 

[powerhound]

I'm afraid I'm completely lost about your question. Your question doesn't ring a bell with me with regards to a set number of categories. Three characteristics that locate are True Position, Runout, and Profile. Concentricity and Symmetry locate as well but they are pretty much useless in my opinion.
Am I even close to answering your question?

Powerhound, GDTP T-0419
Engineering Technician
Inventor 2010
Mastercam X5
Smartcam 11.1
SSG, U.S. Army
Taji, Iraq OIF II

 

[CheckerHater]

There are also two broad groups named Orientation and Form.

And two controls named Profile and Run-out, that don't belong to any group, because they control A LOT by themselves.

Are we getting any closer?

 

[pmarc]

Well, your answer did not help.

The only criterion that comes to my mind right now is that officially location tolerances in ASME GD&T (per Y14.5 standard) consist of: position, concentricity and symmetry.

In ISO GD&T world (ISO 1101:2004) location tolerances are: position, concentricity (coaxiality), symmetry, profile of a line and profile of a surface.

But I think this can be found in every handbook on GD&T fundamentals, so I have a feeling that it does not answer your question.

 

[farmENGR]

yes, thanks guys!!

regards,

Joseph