Open AccessAssessment of the influence of deviations in the shape of the surface of the part on the measurement error
Author(s) -
N. Zh. Shkaruba,
O. A. Leonov,
L. A. Grinchenko
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1889/4/042039
Subject(s) - observational error , polar coordinate system , mathematics , representation (politics) , coordinate measuring machine , surface (topology) , system of measurement , statistics , measuring instrument , algorithm , propagation of uncertainty , computer science , geometry , optics , physics , astronomy , politics , political science , law , thermodynamics
The analysis of the factors influencing the occurrence of errors when measuring linear dimensions by universal measuring instruments have carried out. It has shown that for linear measurements, the errors of measuring instruments are in most cases the main components that have a dominant effect on the total measurement error. The specific components of the measurement error at the stage of defective detection of parts during machine repair have considered. For the analytical representation of the current size, a polar coordinate system has introduced and an equation for the contour of the cross section of the measured part has drawn up. To quantify the error caused by not detecting the smallest diameter of the part, an error formula has derived for the oval profile of the part. The estimation of the influence of the number of measurement directions during fault detection on the value of the measurement error has been carried out. Recommendations have presented to reduce the measurement error associated with the deviation of the geometric shape.