Hello all,
I'm a CMM programmer, and at my current place of employment and my last job, I have struggled to find someone who knows the answer to this question. On a circular part with a bolthole circle that has a true position tolerance applied to it, how many datums are required? All the...
An engineer I'm working with has dimensioned a part in a similar fashion to the example provided, where a Datum face is included in a True Position control frame but the basic dimensions giving the position of the hole are referencing another face which has its location relative to the Datum...
During the inspection process I ran across several features (round slots and holes) which had not one, but two MMC symbols in the position block. That is to say, the second MMC symbol was not for a Datum of size, but in the same segment of the position block as the position tolerance itself...
