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Tech Tips

Using PC-DMIS and a portable arm, I start a new program, import my cad model, select a few points and perform a best-fit alignment. Why are the points not lined up to the cad properly? Is my alignment good or bad?

  

The points are not lined up because your manual hits with the arm are not close enough to the cad points you originally selected.  This alignment would be quite unacceptable.  This is typical with manual equipment.  PC-DMIS has a new option for best fitting to re-pierce the cad.  This function takes your measured data as a reference and recreates your original cad hits to better line up the nominal data to the measured data.  Using this, the points would line up and the alignment would be fine.

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