Simplifying Volumetric Error Correction

摘要

Characterizing the errors in the entire working volume of a CNC machine tool can improve how well parts made on it comply to their design drawings. Characterizing the errors of a CMM can reduce its uncertainty of measurement, improving its measurement accuracy. Entry of the error-map data as correction factors essentially linearizes stage motion. Although full working volume characterization is a worthy goal, the process for error-mapping these systems has been lengthy and tedious, requiring setup and analysis by skilled technicians.Taking a machine tool out of production for 11/2-2 days to perform volumetric calibration is not very attractive to any shop.