Uncertainty evaluation method for axi-symmetric measurement machines
This paper describes a method of uncertainty evaluation for axi-symmetric measurement machines. Specialized measuring machines for the inspection of axisymmetric components enable the measurement of properties such as roundness (radial runout), axial runout and coning....
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2016-01-01
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| Series: | International Journal of Metrology and Quality Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1051/ijmqe/2016011 |
| Summary: | This paper describes a method of uncertainty evaluation for axi-symmetric measurement
machines. Specialized measuring machines for the inspection of axisymmetric components
enable the measurement of properties such as roundness (radial runout), axial runout and
coning. These machines typically consist of a rotary table and a number of contact
measurement probes located on slideways. Sources of uncertainty include the probe
calibration process, probe repeatability, probe alignment, geometric errors in the rotary
table, the dimensional stability of the structure holding the probes and form errors in
the reference hemisphere which is used to calibrate the system. The generic method is
described and an evaluation of an industrial machine is described as a worked example.
Expanded uncertainties, at 95% confidence, were then calculated for the measurement of;
radial runout (1.2 μm with a plunger probe or 1.7 μm with a lever probe);
axial runout (1.2 μm with a plunger probe or 1.5 μm with a lever probe); and
coning/swash (0.44 arcseconds with a plunger probe or 0.60 arcseconds with a lever probe). |
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| ISSN: | 2107-6839 2107-6847 |