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.
I have a similar part and can tell I'm doing something wrong. This part has 5 holes in the flange and I got all 5. I noticed the x,y deviation is always in the same direction on my parts. So I rotated one part and measured again and the direction stayed the same. The datum A used is a cylinder measured in dcc with 2 levels. Getting different values so I know something aint right but perplexed as to why the true position is always off in the same direction.
Using a cylinder as a primary datum is fine provided it is of sufficient length. Notice the distance between datum cylinder A and the flange is longer than the length of the cylinder. This can lead to projection errors.
Using a cylinder as a primary datum is fine provided it is of sufficient length. Notice the distance between datum cylinder A and the flange is longer than the length of the cylinder. This can lead to projection errors.
