The knowledge of thermo-elastic tool center point (TCP) errors offers significant potential to increase the achievable product quality in manufacturing. This paper presents a novel, cost-effective, machine integrated measurement method for small and medium sized machine tools to detect thermally induced errors utilizing a position sensing detector (PSD) and a thermo-stable laser frame. Based on the measured output of the developed system, 13 of 21 errors of a three-axis kinematic can be derived. Furthermore, the error-specific uncertainties are evaluated by means of Monte Carlo method. Experimental results are presented and give an impression of the capability of the measurement method. (c) 2021 CIRP. Published by Elsevier Ltd. All rights reserved.
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