True position

[UKCHAMP]

I'm fairly new to PCD, but 18 years programming. I have a position callout (bi-lateral not diametric) of .001 to -A-. -A- is a cylinder, and the position is for the mid-point of the tip geometry (mid-point of two circles) in the X axis. The deviation in X shows up as .000081, so the true position should report out as .000162 (.000081 x2) but it doesn't. It reports a position of .003409. Where is PCD getting tis number from?



TP_2.PNG

[Sora5]

Sometimes you will have to change the GD&T standard to custom and uncheck the Perp to Centerline in the Advance tab if you're doing a single axis position.

[UKCHAMP]

Thanks Sora5