Period of the project
Start: March 2015
End: February 2019
Description of the project
Today’s requirements for modern coordinate measurement machines (CMM) increased with respect to their accuracy in the range of sub-micrometers along with growing measurement volumes. Therefore, the PTB performs research to significantly improve the development of interferometric measurement techniques for industrial applications capable of simultaneously compensating the errors of all six degrees of freedom of linear motions of CMMs.
We currently develop a compact and rugged setup to determine and compensate the geometric errors of large-scaled CMMs using laser interferometry, while accounting for fluctuations of the air refractive index.
One of the project’s goals is to set up a multi-axial demonstrator and determine the achievable measurement uncertainties in verification measurements.
Project partner
SIOS Messtechnik GmbH, Hexagon Metrology GmbH, Feinmess GmbH & Co. KG and TEM Messtechnik.