Doubt about the Individual FCF's for Hole and Bore

[VinodGDTP]

Hello Friends


Please refer the attached image.


I totally confused about the single and double FCF for Hole and counterbore.


Now how to calculate the total positional tolerance for the following conditions.


Sl. No.) Hole Dia, Counterbore dia.
1) Ø6.3 Ø9.4-9.6
2) Ø6.4 Ø9.4-9.6
3) Ø6.3 Ø9.4
4) Ø6.4 Ø9.6
5) Ø6.4 Ø9.4
6) Ø6.3 Ø9.6
7) Ø6.3-6.4 Ø9.4
8) Ø6.3-6.4 Ø9.6




thanks in advance


Vinod

[Kelly_Bramble]

The FCF |position|dia 0.25 MMC|A|B MMC| applies exclusively to the Dia 6.3-6.4 hole.

and

The FCF |position|dia 0.5 MMC|A|B MMC| applies exclusively to the Dia 9.4-9.6 Counterbore hole.