Article ID Journal Published Year Pages File Type
7123497 Measurement 2016 15 Pages PDF
Abstract
The thermal drifts induced by the power dissipated by mechanical guiding systems represent the main limitation on the accuracy of ultra-high precision cylindricity machines. Thus, a high precision compact prototype (high precision set-up) was designed such as to simulate the behaviour of a cylindricity machine and to insure in-situ calibration of capacitance probes with regards to four laser interferometers. The set-up is equipped with three heating wires simulating the power dissipated by the mechanical guiding systems and nineteen temperature Pt100 probes to monitor the temperature distribution. A time-independent and a time-dependent thermal Finite Elements Models (FEM) of the set-up were achieved, and the results were compared to experimental ones. This comparison presents a global agreement. The simulations of cylindricity measurements reveal that the thermal expansion is equivalent to few nanometres.
Related Topics
Physical Sciences and Engineering Engineering Control and Systems Engineering
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