Task‐specific measurement uncertainty budget of Curvic‐coupling using analytical methods

Bekim V. Gashi, Trevor Toman, Ranveer S. Matharu

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    A number of Industrial reference components manufactured by grinding to achieve tight dimensional tolerances. In this paper, we present an uncertainty budget of a reference forty-tooth # Curvic measured using an accurate Coordinate Measuring Machine (CMM) in a temperature-controlled laboratory. A number of measurements conducted on Curvicto assess measurement repeatability and reproducibility. Expanded uncertainty budget evaluated from twenty-one Influencing factors, giving8.7 µm (7.1 µm from Type A) and 11 µm (9.6 µm from Type A), respectively, for repeatability and reproducibility test (k >2). Measurement uncertainty due to steady-state thermal effects is 2.2 µm. An adaptable model is presented to evaluate transient thermal effects, a factor often neglected in measurement uncertainty. Thermal time constant uncertainty associated with transient thermal effects is evaluated u(τ)= ±398 s, which corresponds to ±15 % of thermal time constant expanded uncertainty, u(τ)= ±2570 s. # Curvic® (Curvic is a trademark of The Gleason Works, 1000 University Avenue, Rochester, NY, 14603, USA)
    Original languageEnglish
    Title of host publicationInternational Congress of Metrology
    PublisherEDP Sciences
    Number of pages22
    Publication statusPublished - 23 Sept 2019
    Event19th International Metrology Congress - Paris Porte de Versailles Exhibition Hall 4, Paris, France
    Duration: 24 Sept 201926 Sept 2019
    Conference number: 19


    Conference19th International Metrology Congress
    Abbreviated titleCIM 2019
    Internet address

    Bibliographical note

    This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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