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Influence of Human Factor in the AACMM Performance: a New Evaluation Methodology
González-Madruga Daniel,Cuesta Eduardo,Barreiro Joaquín,Martínez-Pellitero Susana 한국정밀공학회 2014 International Journal of Precision Engineering and Vol. No.
One of the main principles of metrology, when talking about instrument calibration, concern to the idea of reproducing the actualmeasurement process during calibration (same instrument handling, environment, measurement parameters, etc.) in order to obtainsuitable information. In spite of that, this principle is being currently neglected in Articulated Arm Coordinate Measuring Machine(AACMM) evaluation and/or calibration procedures. These procedures are carried out in manufacturer facilities under unknownconditions and measurement parameters instead of “in-situ” procedures with similar measurement parameters. Thereby, reportedaccuracy has little to do with AACMM common use and, therefore, with its reliability. This work presents a new evaluationmethodology for both AACMM and operator performance. To do so, a survey of main measurement parameters (operator, contactforce, type of feature) is carried out by mean of contact force sensor on the AACMM probe and geometric gauges. ANOVA have beenused for the study of these parameters and its impact on AACMM performance. Additionally, a new evaluation methodology capableof quantifying AACMM, operator and its measuring technique contribution to measurement uncertainty has been developed. It issupported by a feature-base gauge that has been specifically designed for this task.
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