unilateral surface profile tolerance

[rhmeng]

I am not sure if this is the correct thread for this, but i have been trying to find a way to put a unilateral tolerance on a surface profile in a solidworks drawing and i cannot figure it out. does anyone know how to do this? per ASME Y14.5 i just drew in my own line and dimensioned to that but is there a better automatic way of doing this? thanks

 

[BiPolarMoment]

Are you working to ASME Y14.5-2009? If so, you don't need to draw the line as you can use the unequal profile symbol (U). (Example)

Alternatively, what I would typically do to create the line in a drawing is use the offset entity sketch tool.

 

[rhmeng]

ahhhhhhh i see this now, I was unsure of how to call out remove vs add material but this makes it clear. Thanks for the help!

 

[rhmeng]

actually one more thing regarding this, if I have the .005 surface profile referenced to a hole datum feature @ .005 MMC, does this mean that at LMC of my hole datum the surface profile now has .010? Do you add the two tolerances together?

 

[BiPolarMoment]

This is a better question for the Drafting Standards, GD&T & Tolerance Analysis subforum. But to attempt to answer your question--"only sort of"; the form of the feature controlled by the profile still has to fall within the profile tolerance you specify but if you allow the reference datum to float due to a MMC modifier then the profile feature can shift in position proportionally.