How do you calculate position with angled datums?

2 questions for measuring the 2x .5247 +.0007/-.0000 holes to datums D-A-B
*The holes are NOT inline with Datum -B-

#1 how does PC-DMIS calculate where the Datum origin is calculated from?

#2 how would you duplicate this manually with height gage and rock?

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KIRBSTER269 over 6 years ago

Not on the Plate, you want it to be up so you can Zero. You need Datum A to be Flat, so it will be basically upside down or backwards. and the angle the blueprint calls out.
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KIRBSTER269 over 6 years ago in reply to KIRBSTER269

Then technically it should be DBA? If that's the case, Then D is on the plate. A on the Backing. Run an indicator over B. See how flat it is at the perfect angle. On Dmis you put the nominal number. if you use actual number, part might check good and nominal number it actually might check bad. This is not my call nor do I know the function of this part, and I still can't see the print.
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KIRBSTER269 over 6 years ago in reply to KIRBSTER269

Then technically it should be DBA? If that's the case, Then D is on the plate. A on the Backing. Run an indicator over B. See how flat it is at the perfect angle. On Dmis you put the nominal number. if you use actual number, part might check good and nominal number it actually might check bad. This is not my call nor do I know the function of this part, and I still can't see the print.
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