Investigating The Volumetric Performance Of
Multi-axis Measurement Arms
Author(s)
J. Singh, M. Hughes & J.N. Petzing
Abstract
Multi-axis Measurement Arms (MMAs) are a unique subset of Coordinate
Measuring Machines (CMMs). They incorporate a large number of degrees of
freedom and compact design based on multi-element arm construction, which
provides tremendous versatility of movement and access around an object
being measured. The consequences of the flexibility of the MMAs is that the
volumetric accuracy and repeatability specifications are substantially inferior to
those of more traditionally designed CMMs.
The work reported here has examined in detail the volumetric performance
of a 'Faro Bronze Series' Multi-axis Measurement Arm, with repeated
systematic measurements of a calibrated reference sphere. The results show that
regions of poor accuracy, repeatability and variance occur within the
measurement volume, and these
Keywords
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