Measurement Uncertainty and Machine Tool Testing

According to international standards measurement uncertainties have to be stated with all measurements, including results from machine tool testing. erage industrial conditions measurement uncertainties are estimated for positioning measurements with laser interferometers and linear scales, for straightness measurements with laser interferometer and straightedge, and for pitch measurements. sults, i.e. the test uncertainties, are discussed and compared with average tolerances given in ISO standards for the corresponding test procedures. ainties are not estimated for optimum conditions in order to make more people aware, that the alignment of the measurement device, temperature effects and repeatability of the machine tool and the measurement device might cause larger uncertainties than the uncertainty of the device alone.