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Conductance sensing for monitoring micromechanical machining of conductive materials

AuthorsCastaño, Fernando ; Toro Matamoros, Raúl Mario del ; Haber Guerra, Rodolfo E.
KeywordsTool-piece contact resistance
Conductance sensor design
High precision system
Micromachining process
Issue Date2015
CitationSensors and Actuators, A: Physical 232: 163- 171 (2015)
Abstract© 2015 Elsevier B.V. All rights reserved. A sensoring system is presented for high-precision monitoring in real time of tool-workpiece interaction and cutting detection in micromachining operations. It employs a sensor designed to monitor conductance along the tool edge and the material. The results are theoretically applicable to all machining and milling operations on conductive materials. Contact resistance is calculated by measurement of the drop in the AC current voltage flowing through the interaction impedance of the spindle, the tool and the workpiece. The effectiveness of the conductivity sensor is experimentally verified in several micromachining operations. An assessment of the prototype demonstrated a success rate of 90% in detecting the cutting states. These results hold the potential to improve the implementation of embedded systems for real-time tool-condition monitoring of micromachining processes at an industrial level.
Identifiersdoi: 10.1016/j.sna.2015.05.015
issn: 0924-4247
Appears in Collections:(CAR) Artículos
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