Poster Presentation: The work here presented is concerned with the calibration of freeform surfaces using coordinate measuring machines (CMMs). The approach to calibration is based on repeated measurements of an uncalibrated object in multiple orthogonal positions. The basic idea is to eleminate the need for complex calibrated items to be used in the substitution method for uncertainty assessment. The procedure is beeing investigated as one of the possible approaches for the new ISO 15530 series on uncertainty assessment for CMMs. The calibration of freeform surfaces is here presented as an example. A turbine blade has been calibrated using a CAD-based measuring system and a software tool to perform data collection, analysis, calculation and display of uncertainty. The measurands are represented by the local deviations from nominal points, with spacing of 0.2 mm in 9 different sections of the turbine blade.
|Title of host publication||proceedings of the Euspen 2nd International Conference|
|Publisher||St. Martin's Press|
|Publication status||Published - 2001|
|Event||2nd euspen Int. Conference - Turin, Italy|
Duration: 1 Jan 2001 → …
|Conference||2nd euspen Int. Conference|
|Period||01/01/2001 → …|