I don't know what this true position on the hole is constraining. Bolt circle diameter or orientation of the hole maybe? Trying to determine if I need to measure the hole as a cylinder. Appreciate the help.
Without seeing the rest of the print, it may need to be timed to something (i.e. the spline), or it will say something to the effect of "timing of features to each other is not important". The 60° basic dimension, and the 4" BCD (I'm under the assumption that was also basic?), need to be held to [A].
Without seeing the rest of the print, it may need to be timed to something (i.e. the spline), or it will say something to the effect of "timing of features to each other is not important". The 60° basic dimension, and the 4" BCD (I'm under the assumption that was also basic?), need to be held to [A].
Timing of the splines is random. How would the 60° dimension be held to A? I can see how the 4" BCD would be held to A. Just to note those dimensions have a higher precision and tolerance on the actual print, I just simplified them and changed the numbers to avoid the chance of getting in trouble.
The 60 degrees and 4.0 diameter are indicating the ideal location of the holes in the bolt circle. The designer could have just as easily used XY dimensions to show the ideal hole locations without changing the meaning of the Position requirement.
