GX , GN Modifier

[[La...]]

Hello,

I would like to ask for your help in interpreting the relationship between GX, GN, and the surface profile.

In the picture_1, I have illustrated how I interpret the diameter tolerance.

Is my line of reasoning correct in your opinion?

Image 2 shows another interpretation, but I believe it is not entirely correct.

 

What is your opinion on it?

 

Thank you for your comment.

 

 

 

 

 

 

[[Ma...]]

This drawing is quite a rubbish.

You can not have (M) on non tolerated features.

What you can do is perform surface profile on A with GN and another surface profile on A with GX ( GX,GN - just select tangential element outside/inside - GX means maximum inscribed )

[[La...]]

Thank you for your answer.

The gx is on one part, the gn is on another part.

I would like to ask what the diameter tolerance would be for the part shown in the picture above, +/-0,25mm or 0,5mm.

 

Thank you for your comment.

[[Ma...]]

You have an tolerance on surface ( against dia 131,4 ) 0,5mm - so it's +/-0,25 on radius.

But this tolerance can not be used in datum A for MMB - it's just for surface profile.

From drawing it's not clear for what purpose is used GX/GN, but that's just an evaluation for getting center of datum A - tolerance is still missing for MMB

[[La...]]

Thank you for support!