Alignment dilemma

[[SH...]]

Dear community members,
I have attached my drawing, in that drawing datum B and datum C did not called directly, instead datum target is given.my doubt is that where should I take the datum point exactly the datum target point. Should I go for RPS alignment??

IMG_20190927_184859.jpg

[[Br...]]

That's an odd way to use datum targets. In this Drawing Datum C is a movable datum target. typically this would be used to sort of "Clamp" the part in place. It would make more sense to me if one side(left or right) of the part had the two angles both datum B, and the other datum C. Then the part would sit in sort of a V-Block, while anther Vblock represented by datum Targets C, moved over until it stopped and clamped on the part.

It doesn't make sense to me because the direction the datum targets move are toward the center. I don't think this would really do anything since they are opposed. If they came down from the top they would center the part into the angled planes. As for your alignment, This could get pretty complicated. You need to find those tangent lines where those datum target planes would make contact. Considering the complexity of this DRF, it could prove to be pretty difficult to simulate what looks like was meant for some sort of gauge inspection in mind. Maybe you could measure cylinders, and create theoretical planes that intersect the cylinders at the basic angle creating two lines. Without sitting down and really trying a bunch of things in calypso to see what works, its really hard to say how to do this.

[[An...]]

See attached.

Contribution_30_09_2019.pdf