How do you control profile of a surface?
How do you control profile of a surface?
(OP)
Suppose you have a square shaped object and have a profile of a surface callout on it of 0.5... on a gage how would you control this? Basically, I'm asking how you would design a gage to check for the profile control?
Anyone have any examples of such gages that control profile?
Anyone have any examples of such gages that control profile?





RE: How do you control profile of a surface?
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: How do you control profile of a surface?
RE: How do you control profile of a surface?
I'd have go & no go gages just like for a round item but they would be square.
One would simulate MMC, the other LMC.
Do you understand profile tolerance itself?
What standards are you working to/are the drawings to? It shouldn't make much difference but just in case.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: How do you control profile of a surface?
Peter Truitt
Minnesota
RE: How do you control profile of a surface?
If you think of a hard gage, you are not able to do this. And it is not a matter of whether the hole is round or square.
Profile of surface is two-sided requirement, so it has two boundaries that describe feature in its maximum material condition (MMC) and in its least material condition (LMC). You could build a gage that would check MMC of a feature, but in the same time checking LMC with hard gaging is simply impossible, because LMC boundary is 'inside' the material of a part.
RE: How do you control profile of a surface?