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Proceedings Paper

Monitoring machining conditions by infrared images
Author(s): Joao Eduardo Borelli; Luis Gonzaga Trabasso; Adilson Gonzaga; Reginaldo Teixeira Coelho
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Paper Abstract

During machining process the knowledge of the temperature is the most important factor in tool analysis. It allows to control main factors that influence tool use, life time and waste. The temperature in the contact area between the piece and the tool is resulting from the material removal in cutting operation and it is too difficult to be obtained because the tool and the work piece are in motion. One way to measure the temperature in this situation is detecting the infrared radiation. This work presents a new methodology for diagnosis and monitoring of machining processes with the use of infrared images. The infrared image provides a map in gray tones of the elements in the process: tool, work piece and chips. Each gray tone in the image corresponds to a certain temperature for each one of those materials and the relationship between the gray tones and the temperature is gotten by the previous of infrared camera calibration. The system developed in this work uses an infrared camera, a frame grabber board and a software composed of three modules. The first module makes the image acquisition and processing. The second module makes the feature image extraction and performs the feature vector. Finally, the third module uses fuzzy logic to evaluate the feature vector and supplies the tool state diagnostic as output.

Paper Details

Date Published: 23 March 2001
PDF: 5 pages
Proc. SPIE 4360, Thermosense XXIII, (23 March 2001); doi: 10.1117/12.420981
Show Author Affiliations
Joao Eduardo Borelli, Ctr. Tecnico Aeorespacial (Brazil)
Luis Gonzaga Trabasso, Ctr. Tecnico Aeorespacial (Brazil)
Adilson Gonzaga, Univ. of Sao Paulo (Brazil)
Reginaldo Teixeira Coelho, Univ. of Sao Paulo (Brazil)


Published in SPIE Proceedings Vol. 4360:
Thermosense XXIII
Andres E. Rozlosnik; Ralph B. Dinwiddie, Editor(s)

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