The selection of radius correction method in the case of coordinate measurements applicable for turbine blades
PBN-AR
Instytucja
Wydział Budowy Maszyn i Lotnictwa (Politechnika Rzeszowska im. Ignacego Łukasiewicza)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY (30pkt w roku publikacji)
ISSN
0141-6359
EISSN
Wydawca
DOI
URL
Rok publikacji
2017
Numer zeszytu
Strony od-do
243-252
Numer tomu
49
Liczba arkuszy
Autorzy
(liczba autorów: 2)
Słowa kluczowe
EN
CMM-metrology
Probe radius correction
Polynomial interpolation
Streszczenia
Język
EN
Treść
The objective of the research presented in the paper is the selection of suitable probe radius correction method in the case of coordinate measurements which can be applied for turbine blades. The investigations are based on theoretical analysis of geometric data and on further computer simulation of measurements and data processing. In the paper two methods for computing coordinates of corrected measured points are verified. Those so-called local methods of probe radius correction are based on Bézier curves. They are dedicated first of all to coordinate measurements of free-form surfaces which are characterized by big values of curvature, e.g. those surrounding the leading and trailing edges of a turbine blade. Numerical simulations are done for several models of the cross-sections of turbine blades with diversified magnitudes of radii of curvature. There are considered both manufacturing deviations and coordinate measurement uncertainty of each examined profile of a turbine blade. Numerical investigations based on the developed analytical models show the advantage of the algorithm which uses the second degree Bézier curves in probe radius correction. Moreover, in the paper there is explained the implementation of the developed algorithms for probe radius correction into the standard CMM software which amplifies the usability of the algorithms.
Cechy publikacji
oryginalny artykuł naukowy
Inne
System-identifier
39729
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