Alright here is my problem/question.
I have a part where Datum -A- (Z axis) is not prismatic, however datum -B- (X axis) and -C- (Y axis) are.
I do not have much experience with Iterative alignments other than that I have been to the Level 2 Hexagon class (Just don't use them or have the need too).
My thoughts were, this is a good time, to try an Iterative alignment.
I believe I have that part of the program correct:
I created 6 auto vector points on top (Datum -A-),
then 5 auto vector points on left side (Datum -B-)
then finally 5 auto vector points on the front of the part (Datum -C-).
When I create the Iterative alignment I pick top 6 points as level (Datum -A-),
5 points on left rotate (Datum -B-),
then 5 points on front as origin (Datum -C-).
After completing this Iterative alignment my trihedron doesn't move from before the alignment.
So I constructed planes out of the five points for datum -B- and -C- respectively.
I then origin my "X" to Datum -B- and my "Y" to datum -C-.
How do I origin my "Z", and how do I assign my datum -A- for exact measure? Where did I go wrong? Please any help would be greatly appreciated.
Thank you for the thorough explanation of Iterative alignments. I think there is one misunderstanding, that is entirely my fault, because I did not explain it entirely. My customer supplied model comes to me with the CAD origin (Trihedron) in aircraft/car body coordinates. I then transform my model in a way that it is square with my machine and the origin is now in a hole that we do a read point alignment with and run the entire part in DCC. So my question is if my trihedron is
not at the A-B-C alignment, how do I report my true position, and profile dimensions to a A-B-C FCF? I do not want my report in aircraft or car body coordinates either. I want my dimensions to come from my Datums A-B-C. I think this eliminates using a Iterative alignment, because I did some tests today and the Iterative alignment will use the origin from wherever it is on the model, not necessarily from the Datums?
Thank you for the thorough explanation of Iterative alignments. I think there is one misunderstanding, that is entirely my fault, because I did not explain it entirely. My customer supplied model comes to me with the CAD origin (Trihedron) in aircraft/car body coordinates. I then transform my model in a way that it is square with my machine and the origin is now in a hole that we do a read point alignment with and run the entire part in DCC. So my question is if my trihedron is
not at the A-B-C alignment, how do I report my true position, and profile dimensions to a A-B-C FCF? I do not want my report in aircraft or car body coordinates either. I want my dimensions to come from my Datums A-B-C. I think this eliminates using a Iterative alignment, because I did some tests today and the Iterative alignment will use the origin from wherever it is on the model, not necessarily from the Datums?