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Workpiece inspection method

  • US 7,131,207 B2
  • Filed: 12/05/2003
  • Issued: 11/07/2006
  • Est. Priority Date: 12/05/2002
  • Status: Expired due to Fees
First Claim
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1. A method of inspecting an artefact using a coordinate measuring apparatus in which an artefact-sensing probe is moved into a position-sensing relationship with each artefact and a position reading taken, the method comprising the following steps in any suitable order:

  • measuring a surface of an artefact with an artefact-sensing probe in contact mode;

    measuring said surface of the artefact with an artefact-sensing probe in non-contact mode;

    generating an error map or function corresponding to the difference between the measurement taken with the artefact-sensing probe in contact mode and the artefact-sensing probe in non-contact mode; and

    using the error map or function to correct subsequent measurements with the artefact-sensing probe in non-contact mode.

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