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Performing a process on a workpiece

  • US 20090213216A1
  • Filed: 11/05/2008
  • Published: 08/27/2009
  • Est. Priority Date: 02/21/2008
  • Status: Active Grant
First Claim
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1. A method of performing a process on an existing array of features on a workpiece supported on a fixture, the method comprising:

  • i) selecting at least three, but not all, of the features of the array;

    ii) identifying the nominal position in a coordinate space of each of the selected features, and generating a nominal position data set for the selected features;

    iii) identifying the actual position in the coordinate space of each of the selected features, and generating an actual position data set for the selected features;

    iv) generating an algorithm to transform the nominal position data set to the actual position data set;

    v) applying the algorithm to the nominal positions of the non-selected features of the array to generate actual positions of the non-selected features;

    vi) performing the process on the selected and non-selected features at the respective identified and generated actual positions.

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