Performance Verification of Articulated Arm CMMs

Performance Verification of Articulated
Arm CMMs (including laser scanners)
NPL provides a unique, fast turnaround, high
accuracy UK-based service for performance
verification of Articulated Arm CMMs,
including their laser scanners, delivered using
our custom-built verification facility.
ASME B89.4.22
NPL considers ASME B89.4.22 to be the best
verification standard for determining the
performance of an Articulated Arm and our
ISO 17025 (UKAS) accredited procedures are fully
compliant with this internationally recognised
standard. Verifications performed by Articulated
Arm manufacturers are based on ASME B89.4.22.
Why choose NPL?
Other UK based establishments offering services
are working to verification standards other
than ASME B89.4.22 which are less rigorous and
comprehensive. Only NPL provides verifications
against ASME B89.4.22 which exercises the full
range of movement of the arm.
Portable articulated arm co-ordinate
measurement machines are used extensively in
manufacturing industries for the inspection of
components, assembled products and fixtures.
These measuring systems combine portability
and versatility with good measurement accuracy.
However, as with all measurement equipment,
achieving good performance and demonstrating
compliance with specification standards requires
regular verification checks. Such checks help
demonstrate conformance to quality systems.
NPL offers a fast turnaround and highly accurate
ISO 17025 (UKAS) accredited verification service
for Articulated Arm CMMs. Our procedures are
fully compliant with the internationally recognised
standard ASME B89.4.22 that exercises the full
range of movement of the arm. This standard is
the basis of verification tests used by Articulated
Arm CMM manufacturers.
All verifications are carried out using a specifically
designed, unique, highly stable granite frame
housing low expansion carbon fibre artefacts.
The verification system is housed in a stable,
temperature controlled laboratory to provide
maximum accuracy and repeatability. Precision
spherical targets are used which enable probing to
be carried out in a way that realistically simulates
use of the arm.
Features of the basic service
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Pre-check
to assess suitability and basic performance.
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Performance
verification of all makes of Articulated
Arm CMMs to the recognised ASME B89 standard.
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Determination
of single point articulation (SPAT)
and volumetric performance.
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Low
measurement uncertainty, high level
of measurement confidence.
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Verification
against manufacturer’s specifications.
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Arrangement
of service and repairs with OEMs
should this be needed.
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Target
turnaround of 3 working days from
delivery to return.
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Measurement
arms up to 2.4 m (12 ft) can
be verified using our routine service.
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ISO
17025 (UKAS) accredited service.
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The
performance of larger arms can be verified
in accordance with the spirit of ASME B89.
Features of the extended
laser scanner service
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Volumetric
performance test (based on ASME B89).
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Comparison
against NPL FreeForm reference standard.
Related Services
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Calibration
of reference artefacts, jigs and components.
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Verification
of Laser Trackers.
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Measurement
of Freeform surfaces by contact
and non-contact instruments.
XX
Training
on dimensional measurement.
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Consultancy
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Evaluations
of measurement systems.
of FreeForm reference standards.
Contact details
Further information
National Physical Laboratory
Hampton Road
Teddington
Middlesex
United Kingdom
TW11 0LW
For further information contact [email protected]
Switchboard: 020 8977 3222
Website: www.npl.co.uk
The National Physical Laboratory is operated on behalf of the National Measurement Office by NPL Management Limited, a wholly owned subsidiary of Serco Group plc
© Queen’s Printer and Controller of HMSO, 2013. 10289/1113/REP60
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Supply
on measurement good practice.

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