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Iterative alignment

Layoutguy
I have many yrs (25+) on cmms but new to PCDMIS. My question is about doing an iterative alignment using 3 tooling balls (TB's) on a gage.
Details are as follow.

The gage has a square base and is approx 500mm square. Car body coordinates are.....TB#1 (Lower left corner) X=331.98 , Y=566.99, Z=746.11 / TB#2 (Upper left corner) X=332.04, Y=808.24, Z=746.11 / TB#3 (Upper right corner) X=55.36, Y=808.24, Z=707.24 and the axis convention when completed as I look at the front of the gage (Same view described in TB location) is X+ right to left, Y+ front to back, Z+ is going down. I can measure the spheres, find the iterative alignment command in the construct an alignment menu and pick the appropriate TB's. I just don't know where to enter the coordinate of each TB for the correct offsets.
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  • You don't enter any offsets. You don't just measure the tooling balls.

    1) Open AUTO FEATURES ~ SPHERE
    2) Enter the XYZ nominals and the correct vector (0,0,1, 0,1,0, 1,0,0, etc, just a major vector) and CREATE (do NOT measure) the spheres (all 3)
    3) Make the Iterative alignment using the 3 tooling balls
    4) Mark & Measure.

    Pcdmis uses tth THEO (nominal) values of the feature to generate the alignment, no offsets.
Reply
  • You don't enter any offsets. You don't just measure the tooling balls.

    1) Open AUTO FEATURES ~ SPHERE
    2) Enter the XYZ nominals and the correct vector (0,0,1, 0,1,0, 1,0,0, etc, just a major vector) and CREATE (do NOT measure) the spheres (all 3)
    3) Make the Iterative alignment using the 3 tooling balls
    4) Mark & Measure.

    Pcdmis uses tth THEO (nominal) values of the feature to generate the alignment, no offsets.
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