Flatness Call Out confusing me - What they are wanting and how to check it?

O

OSKIE

#41
Your right if you check that from the top of that face you checking the two faces the one he's sitting on with the blocks and the top face he zeroing out on.
 
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optomist1

A Sea of Statistics
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#42
Hi David,

Excellent explanation....very helpful to an aspiring technologist studying Y14.5, thanks!!

Marty
 
J

Jeff Chang

#43
You would need the indicator sticking through the surface plate, simply indicating the opposite side of the part to the surface plate would be measuring parallelism. The traditional method for flatness used 3 adjustable jacks but that is VERY slow.
Yes, it not just slow speed but scratch part's surface easily.
 
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