Technical gazette, Vol. 30 No. 1, 2023.
Original scientific paper
https://doi.org/10.17559/TV-20220204091212
The Analysis of Metrological Characteristics of Different Coordinate Measuring Systems
Goran Jotić
orcid.org/0000-0002-8882-982X
; University of Banja Luka, Faculty of Mechanical Engineering, Stepe Stepanović 71, 78000 Banja Luka, BiH
Branko Štrbac
orcid.org/0000-0003-3892-2767
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Teodor Toth
orcid.org/0000-0003-1086-9511
; Technical University of Košice, Faculty of Mechanical Engineering, Letná 9, 040 02 Košice, Slovakia
Vladimir Blanuša
; The School of Higher Technical Professional Education, Školska 1, 21000 Novi Sad, Serbia
Miroslav Dovica
orcid.org/0000-0002-8104-0914
; Technical University of Košice, Faculty of Mechanical Engineering, Letná 9, 040 02 Košice, Slovakia
Miodrag Hadžistević
; University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Abstract
The aim of this paper is to examine the metrological characteristics of some of the most commonly used coordinate measurement systems in industry in a case study of the flatness error. The accuracy and measurement uncertainty of the coordinate measuring machine with contact probe, point by point mode and scanning mode, and with non - contact probe, then performance measuring arm, optical scanner and finally industrial computed tomography were analyzed. In order to exclude factors that affect the accuracy of measurement and measurement uncertainty, and are not part of the hardware structure of the CMS, the experiment was conducted on a reference workpiece and an independent software solution was used to estimate the error of flatness. The accuracy of measuring systems was determined as the difference between the reference value and the mean value of repeated measurements and the measurement uncertainty was determined according to the instructions for estimating the measurement uncertainty GUM. The results of the research showed high metrological performance of the coordinate measuring machine and the optical scanner for this measuring task. Also, it was found that industrial computed tomography gives a very large measurement error and that the measurement uncertainty is very difficult to determine.
Keywords
accuracy; coordinate measurement systems; flatness error measurement uncertainty
Hrčak ID:
288393
URI
Publication date:
15.12.2022.
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