Author(s)

A.R. Sousa & C.A. Schneider

Abstract

A touch probe is used on a 3-axis vertical machine centre to check against a hole plate, calibrated on a coordinate measuring machine (CMM). By comparing the results obtained from the machine tool and CMM, the main machine tool error components are measured, attesting the machine accuracy. The error values can be used also to update the error compensation table at the CNC, enhancing the machine accuracy. The method is easy to use, has a lower cost than classical test techniques, and preliminary results have shown that its uncertainty is comparable to well established techniques. 1. Introduction The geometric errors of the machine tools are transferred directly t

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