Alignment strategy

Hello All
I received one part to measure in CMM with PCDMIS platform, and I am bit confused to alignment strategy on this.
Attached drawing snap for your understanding

Here Datum A is bottom face, Datum B represented to 4 holes.
In program I followed by below steps

The part is in XY plane

Measure datum A
Measure 4 holes
Connect holes 1 & 4 with Line 1
Connect holes 2 & 3 with Line 2
Intersect Line 1 & 2 and get a IntPoint
Construct MidPoint between holes 2 & 4

Alignment:

Datum A - Spatial alignment in Z
MidPoint - Planar alignment in X
IntPnt - Origin XY

My concern,

Is my alignment strategy is correct? please suggest
How we can apply MMC to B datum?

I need help on this please

Thanks

Attached Files

Parents

Neil Challinor over 4 years ago

You need to use XactmMeasure dimensioning. Measure datum A as a plane and define it as datum A. Then measure the four datum B holes as cylinders, construct a feature set from them and define the set as datum B. Dimension the four holes in one XactMeasure position command. Measure datum C as a cylinder. Dimension datum C to datums A & B. Example code below...
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Neil Challinor over 4 years ago

You need to use XactmMeasure dimensioning. Measure datum A as a plane and define it as datum A. Then measure the four datum B holes as cylinders, construct a feature set from them and define the set as datum B. Dimension the four holes in one XactMeasure position command. Measure datum C as a cylinder. Dimension datum C to datums A & B. Example code below...
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