Programming Datum Targets

[[Do...]]

How would I go about programming my alignment based off of the datum targets that are shown in the sketch below?

2024-08-15 13_17_44-Zoom Meeting.pngFetching info...

[[Da...]]

From Calypso help:

RPS is short for Reference Point System. RPS alignment is based on the 3-2-1 rule.
Number of points at least 3,maximum 6
A coordinate (e.g. Z) is fixed 3 times
A coordinate (e.g. Y) is fixed 2 times
A coordinate (e.g. X) is fixed 1 time
RPS alignment is usually an iterative process performed with the aid of a loop.

Unlike other methods, RPS alignment is based on the points that are specified in the drawing of the workpiece.
Alignment is therefore subject to rules and is not wholly user-definable. One of the advantages is therefore that different results obtained with a given workpiece are comparable because they are all based on the same system of coordinates.

[[Cl...]]

How is this any different than a Plane > Line > Point?

[[Da...]]

Create a plane where the A points go (Plane A) then create one where the B points are (Plane B) and then one more where the C point is (Plane C). Now you can use the dimensions given to properly locate the target points. For example A1 is 25 from Plane B and 80 from Plane C, ect.

[[Ma...]]

(A)
If you have a model then you can use points and for strategy you can make pointcloud of area defined by radius - it will generate points within radius ( here is d8 ) - then recall all points into plane and then proceed with your standards ( ASME / ISO ).

(B) is just line with two points

[[To...]]

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Other than the 3 points on A need to cover 8mm diameter area, there is no difference.

[[Ke...]]

I concur with:
- using a "Point" with "Define Point Set" with a 4mm Radius, for Datum A points that are recalled into a plane.
- using a "Point" for Datum C
- I have never seen the B Datum targets called out like that. It seems like if they wanted them to be points, then they would have called them out like Datum C in the End View(?)

I would use all of these targets in the Base Alignment, and Loop the alignment, with a break condition.

[[To...]]

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I noticed that they dimensioned C from A but didn't dimension B. One "might" assume they are both at same height. though maybe the engineer was planning to use 2 vertical shafts on the fixture, which would pick up the highest points on that surface