Determination of Turning Knife Thermal Stress during Longitudinal Turning

Abstract:

A turning knife contacts a work piece during turning. Due to friction, heat is produced proportionally to the turning speed. The resulting temperature influences the quality of the machined surface and wear of the knife. Thus, new machine tools must be developed that minimize the production of unwanted heat. To accomplish this task, a new experimental knife was prepared with thermocouples both built into it and welded to its surface. The measurement process was supplemented by thermovision. Heat flux and surface temperatures were computed from subsurface data using a one-dimensional inverse relationship. The detailed temperature distribution on the surface of the turning knife was determined using a combination of these methods.

• Periodical: Applied Mechanics and Materials (Volume 821)
• Pages: 649-654
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.821.649
• Online since: January 2016
• Authors: Marek Stránský, Jaroslav Horský
• Keywords: Emissivity, Machining, Temperature, Thermo Vision, Thermocouple

References

[1] M. Stránský, Measurement of surface temperatures in mechanical engineering. Master thesis, Brno University of Technology, Institute of Manufacturing Technology, Brno, 2014 (in Czech).

DOI: 10.17973/mmsj.2021_6_2021010

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