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Sensors 2009, 9(10), 7622-7647;

A Real-Time Tool Positioning Sensor for Machine-Tools

Instituto de Automática Industrial, Consejo Superior de Investigaciones Científicas, Ctra. Campo Real km 0.2, 28500 Arganda del Rey (Madrid), Spain
Instituto Tecnológico de Óptica, Color e Imagen - AIDO. C/ Nicolás Copérnico 7-13, Apdo. 139. 46980 Paterna (Valencia), Spain
Author to whom correspondence should be addressed.
Received: 4 August 2009 / Revised: 2 September 2009 / Accepted: 3 September 2009 / Published: 28 September 2009
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain)
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In machining, natural oscillations, and elastic, gravitational or temperature deformations, are still a problem to guarantee the quality of fabricated parts. In this paper we present an optical measurement system designed to track and localize in 3D a reference retro-reflector close to the machine-tool’s drill. The complete system and its components are described in detail. Several tests, some static (including impacts and rotations) and others dynamic (by executing linear and circular trajectories), were performed on two different machine tools. It has been integrated, for the first time, a laser tracking system into the position control loop of a machine-tool. Results indicate that oscillations and deformations close to the tool can be estimated with micrometric resolution and a bandwidth from 0 to more than 100 Hz. Therefore this sensor opens the possibility for on-line compensation of oscillations and deformations. View Full-Text
Keywords: tool localization; laser-tracking; machine-tool; oscillation and deformation measurement; interferometry tool localization; laser-tracking; machine-tool; oscillation and deformation measurement; interferometry

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ruiz, A.R.J.; Rosas, J.G.; Granja, F.S.; Honorato, J.C.P.; Taboada, J.J.E.; Serrano, V.M.; Jimenez, T.M. A Real-Time Tool Positioning Sensor for Machine-Tools. Sensors 2009, 9, 7622-7647.

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