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Title: Evaluation of touch trigger probe measurement uncertainty using FEA
Authors: Salleh, MR
Yang, QP
Jones, BE
Keywords: Evaluation of measurement uncertainty
Coordinate measuring machine
Touch trigger probe
Pre-travel variation
Measurement uncertainty
Finite elements analysis (FEA)
Publication Date: 2006
Publisher: IEEE
Citation: IEEE Instrumentation and Measurement Technology Conference, Sorrento, Vol. 1-5, Apr 2006
Abstract: Evaluation of measurement uncertainty is an essential subject in dimensional measurement. It has also become a dominant issue in coordinate measuring machine (CMM) even though its machine performance has been well accepted by many users. CMM probes, especially touch trigger probes which are commonly used, have been acknowledged as a key error source, largely due to pre-travel variations. The probe errors result in large measurement uncertainty in CMM measurement. Various methods have been introduced to estimate measurement uncertainty, but they tend to be time consuming and necessarily require a large amount of experimental data for analyzing the uncertainty. This paper presents the method of evaluation of CMM probe uncertainty using FEA modeling. It is started with the investigation of the behavior of probe by recording stylus displacement with vary triggering force. Then, those displacement results will be analyzed with sensitivity analysis technique to estimate the uncertainty of recorded results.
ISBN: 0-7803-9359-7
ISSN: 1091-5281
Appears in Collections:Advanced Manufacturing and Enterprise Engineering (AMEE)
Dept of Mechanical Aerospace and Civil Engineering Research Papers

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