Determining the Accuracy of Measurement on a CNC Milling Machine

Kerényi, Gábor and Ráczi, Viktor Gergely (2024) Determining the Accuracy of Measurement on a CNC Milling Machine. ACTA MATERIALIA TRANSYLVANICA (EN), 7 (2). pp. 59-65. ISSN 2601-8799

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Abstract

This article describes the difference between coordinate measurement results obtained on a coordinate measuring machine and on a CNC milling machine. It also includes the raw materials used for measurement, thegeometry of the workpiece used, the tools used, the principles used to evaluate the measurement and themeasurement results. In terms of measurement results, machine measurement has been shown to be moreaccurate. For flatness, the deviation between the two measurements averaged 4 µm, for circularity 4 µm,for single-interpolation machining with one axis 3 µm, their parallelism 5 µm, for machining two ten-slotstogether 2 µm, their parallelism 5 µm. The difference between the errors proves that milling and measuringmachine measurement do not differ to such an extent as to require investment in a measuring machine, ifcircumstances do not require it.

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