Has anyone seen a FCF like this? Was wondering if it is a universal thing or if it's customer specific. I think I might understand what it's asking, but I'm not sure how to input that into PC DMIS. A and B in the FCF are points on either end of a tube.
create A, then B open Datum Dialogue and select common datum check box, then select A and then B hit ok. now you have A-B
If I'm understanding the print correctly, A-B on the print is the center line between two concentric circles measured at the extreme ends of the tube. So to get those points, I believe I have to measure the inside diameters at both ends, measure the ends of the tube as planes, and construct projection points from the IDs and the planes at each end to give me points A and B that are called out on the print. I assigned those points as Datums A and B, then created a common datum. So yes, now I have Datum A-B. Problem is, PCDMIS won't let me use that as a primary datum in a FCF because it only allows common datums from 3D features to be used as primary datums. I could assign those two previously mentioned planes as Datums A and B, and then it will let me use common Datum A-B as a primary datum, but that's not how the print calls it out. So I don't know where to go from here. I could be misinterpreting this or overthinking it.
create A, then B open Datum Dialogue and select common datum check box, then select A and then B hit ok. now you have A-B
If I'm understanding the print correctly, A-B on the print is the center line between two concentric circles measured at the extreme ends of the tube. So to get those points, I believe I have to measure the inside diameters at both ends, measure the ends of the tube as planes, and construct projection points from the IDs and the planes at each end to give me points A and B that are called out on the print. I assigned those points as Datums A and B, then created a common datum. So yes, now I have Datum A-B. Problem is, PCDMIS won't let me use that as a primary datum in a FCF because it only allows common datums from 3D features to be used as primary datums. I could assign those two previously mentioned planes as Datums A and B, and then it will let me use common Datum A-B as a primary datum, but that's not how the print calls it out. So I don't know where to go from here. I could be misinterpreting this or overthinking it.
You might have better luck constructing a 3d line between the points and using that line as A-B for the primary, leveling datum and setting 2 axes' origins.
