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NCSL International - Governance
Board of Directors
The (Continuing) Evolution of Articulated Arm CMM Testing
Edward P. Morse, Center for Precision Metrology / UNC Charlotte
As Articulated Arm CMMs become more accurate and flexible, they compete more directly with other types of metrology systems. This has brought the accuracy of the instruments into question and - indirectly - the quality of the documentary standards to which these instruments are specified. This paper will describe the main standards available today through ASME and VDI/VDE, and then discuss current efforts to merge the best of these existing standards into an ISO standard. The main areas to be covered are: choice of artifacts, number of test lengths, requirements on articulation poses, and congruence between articulated arm CMM specifications and specifications for other CMMs.
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