Uncertainty analysis of point by point sampling complex surfaces using touch probe CMMs

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The paper describes a study concerning point by point scanning of complex surfaces using tactile CMMs. A four factors-two level full factorial experiment was carried out, involving measurements on a complex surface configuration item comprising a sphere, a cylinder and a cone, combined in a single assembly. An investigation on the source and effects of different uncertainty contributors during this complex surface measurement was carried out. The factors involved are machine, probe, and operator, as well as procedure, dependant. The results obtained from the experiments were analysed in terms of deviations from CAD model, repeatability, and measuring uncertainty. Statistical analysis and uncertainty budget are presented.
Original languageEnglish
Title of host publicationProceedings of the 10th CIRP International Seminar on Computer Aided Tolerancing
Publication date2007
Publication statusPublished - 2007
Event10th CIRP International Seminar on Computer Aided Tolerancing - Erlangen, Germany
Duration: 21 Mar 200723 Mar 2007
Conference number: 10


Conference10th CIRP International Seminar on Computer Aided Tolerancing


  • complex surface
  • measuring uncertainty
  • factorial investigation
  • Coordinate measuring machine

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