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Best Alignment for this Datum Sequence.

Good morning, attached is a pic I wanted to get some feedback on. I wanted to see what the best Alignment would be. Its a bent ​Part. Any Advice would be great. Thank you.

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  • Gee....I can't see any way that a non-flat surface can be your planar element (datum A).

    Oh, now I see; datum A is just the 'flat bits' on either end.

    So, it's just a plane/hole/hole alignment, albeit with the origin being somewhere far off the part, and it seems oriented with the print showing the x-axis to be fore-aft, and the Y axis left-right. Odd, but a simple alignment, but one where there will be an offset in all 3 axis to put it at the origin.

    Measuring the holes will require measuring a circle that is not perpendicular to the top surface. I assume you are using CAD, so the one thing you will need to look for in the edit window is that the vector elements need to be 0,0,1
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  • Gee....I can't see any way that a non-flat surface can be your planar element (datum A).

    Oh, now I see; datum A is just the 'flat bits' on either end.

    So, it's just a plane/hole/hole alignment, albeit with the origin being somewhere far off the part, and it seems oriented with the print showing the x-axis to be fore-aft, and the Y axis left-right. Odd, but a simple alignment, but one where there will be an offset in all 3 axis to put it at the origin.

    Measuring the holes will require measuring a circle that is not perpendicular to the top surface. I assume you are using CAD, so the one thing you will need to look for in the edit window is that the vector elements need to be 0,0,1
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