Funded by the EC under the SM&T Programme (project SMT4-PL97-2330), methods for performance tests, error correction, and calibrations of large coordinate measuring machines (CMMs) were developed, based on calibrated artifacts: Light weight ball plates, disassemblable ball plates, and disassemblable multi-ball bars. CMM manufacturers and users are testing methods and artifacts. Error models we extended to include non-rigid-body errors, typical of large CMMs (methods for error assessment, algorithms for numerical correction). For a full-scale error analysis of larger CMMs (at least one axis > 2 m) no readily applicable methodology existed so far.
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