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Title: Determination Of Gear Artifact Measurement Uncertainty On Coordinate Measurement Machines By Measurement Decomposition And Utilization Of Reference Artifacts
Author: Bill Rasnick, Bruce Cox, Mike Sherrill
Source: 1998 Measurement Science Conference
Year Published: 1998
Abstract: The requirement for primary-level calibration of gear profile and gear tooth alignment has led to development of a method for quantifying the measurement uncertainty on the artifact being calibrated that does not rely on a transfer comparison This method, developed jointly by National Institute of Standards and Technology (NIST) and Oak Ridge Metrology Center (ORMC) personnel, consists of breaking down the measurement method into simpler components and quantifying these components using generally accepted refenence artifacts with low uncertainties, (gage blocks, ring gages, spheres, etc.). Once quantified, these components are added in quadrature according to NIST Technical Note 1297, 1994 Edition1. Verification of this method can be accomplished by intercomparisons with other methods and laboratories.




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