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Old problem and again I struggle...CAD, Cyl shaped part, alignment

d.evans
I have a part that basically looks like a Gauge Pin with a hole drilled thru it (90 perp to the longitudinal axis of the cyl).

I am having a very difficult time trying to get this thing aligned using CAD. I have tried 3 points on one of the flat ends, then 2 points along the length, and a single point on "top" about halfway between the thru hole and the nearest end.

Get Iterative Alignment error.

If I dont use iterative alignment, and instead use cir at one end, a cir at the other end, and the thru hole, I can't get the features to "stick" to the CAD.

I've got the part laying on its side inside a R&R AVP 11-20 V-shaped standoff, with the thru hold pointing up, and the length of the part inline with the machine's X-axis.

Running PCDMIS 2013MR1
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  • Make a plane on 1 end of your gauge pin, now measure 2 circles 1 near the plane, the other at the far end. Create a LINE then measure a circle in the board hole. Rotate the hole about the line. HTH
    Your alignment should be (not in proper order):
    X origin = plane
    Level = line
    Y & Z origin = line
    rotate about x = line to circle
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  • Make a plane on 1 end of your gauge pin, now measure 2 circles 1 near the plane, the other at the far end. Create a LINE then measure a circle in the board hole. Rotate the hole about the line. HTH
    Your alignment should be (not in proper order):
    X origin = plane
    Level = line
    Y & Z origin = line
    rotate about x = line to circle
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