True Position

[[AG...]]

Just curious about how anyone would set this up? I am in discussion with the engineer as in he believes that this part is in tolerance as i am getting OOT. I have been discussing this for a day and a half and i might be confusing myself, running in circles? I am setting it up as shown with alignment as A datum, all dims come from the A datum plane in the X axis. The B datum, all dims come from the B datum in the Y axis. In the two separate alignments i have for these i am using the A datum in the X and the Top plane as my Z. The same thing for the B datum alignment, i am using the Y for my B and the Top plane as my Z. When i use Best Fit alignment, i am reporting a good part, i explained how Best fit works and he is not sure of it. In my past endeavor's i used Best fit for a hole pattern like this all day, no issues. I see this as a Best Fit scenario, am i incorrect? Just because the hole pattern is of course the important part. Thank you in advance for any direction or if i am just overthinking this scenario.

  

[[Ma...]]

If A is in -X vector, then report TP|A only X and for TP|B only Y ( or Z i don't know )

[[Jo...]]

The GDT is only asking you to check the Orientation of the bores to the datum planes

 

[[Ka...]]

O.K. Lets try:
Reference A is the left side of the body in your drawing.
Reference B is unclear. On the one hand, it could be formed from the sides of the body (Bx) or from two holes B1 an B2 define (By). 
The Position tolerance definition match not the norm DIN EN ISO 1101.

In the position tolerance 0.3 to A, no further degree of freedom is restricted. And no CZ is specified either. This means that each hole is toleranced individually. It is NOT a drilling pattern.
The same applies to tolerance 0.3 for B, although in this case there is the additional issue that ‘B’ is not clearly defined.
 

Regards
Karsten

 

[[Ch...]]

When using best fit of bore pattern; Use 'View Tolerance' under Best Fit Method if you want it to match results you would get using a functional gage. 

 

See my post about view tolerance here:

 

Edited 2 hours ago