Tolerance And Uncertainty
Author(s)
W. Knapp
Abstract
This paper describes the influence of the measurement uncertainty to the
tolerance, as defined in international standards, and quotes documents on how
to estimate measurement uncertainties. For industrial length measurements the
principal contributors to the measurement uncertainty are summarised. They
are detailed for machine tool acceptance tests, including the relevant
contributor for the different types of measurements. Parameters for the
volumetric accuracy of coordinate measuring machines (CMMs) and for
machine tools are given, as well as the major influences on the overall
performance of CMMs and machine tools.
1 The "golden rule"
The "golden rule" of metrology states, that the measurement uncertainty shall
be less than 10% of the tolerance. If this requirement is fulfilled, there is
pract
Keywords
Related Book
Other papers in this volume
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