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.
[hijack]
Josh, I appreciate the detailed explanations here. Like BWIZZLE, I went to Level 2 training but never fully grasped Iterative alignments because our shop does not make use of them. I have to ask, though,
if the origin does not move following iteration then what is the value of this type of alignment?
I only use alignments to manipulate the coordinate system as a means for measuring other features. If Iterative Alignment instead moves the measured values closer to the nominals then is the goal only to reduce probing error of the alignment features? Would I then create a regular alignment to move my coordinate system to the alignment features?
I've tried many times to wrap my head around this, but I just can't seem to understand the application.
[/hijack]
[hijack]
Josh, I appreciate the detailed explanations here. Like BWIZZLE, I went to Level 2 training but never fully grasped Iterative alignments because our shop does not make use of them. I have to ask, though,
if the origin does not move following iteration then what is the value of this type of alignment?
I only use alignments to manipulate the coordinate system as a means for measuring other features. If Iterative Alignment instead moves the measured values closer to the nominals then is the goal only to reduce probing error of the alignment features? Would I then create a regular alignment to move my coordinate system to the alignment features?
I've tried many times to wrap my head around this, but I just can't seem to understand the application.
[/hijack]