Comparison of tactile and laser-interferometric measurement systems

With the rising precision of machine tools the demand for more precise and more efficient measurement systems increases. At present, several systems with different measurement procedures are available. This article describes three systems for the geometrical characterisation of machine systems: TRAC-CHECK and TRAC-CAL by ETALON AG, and MT-Check by IBS Precision Engineering. A qualitative comparison is made regarding the possibilities of compensation for measured geometrical errors as well as the measurement execution. Furthermore, a metrology frame for the characterisation of the dynamic tool path accuracy, which has been developed at Fraunhofer IPT, is presented briefly.