Advertisement

Development of a tool–work thermocouple calibration system with physical compensation to study the influence of tool-holder material on cutting temperature in machining

  • Almir Kazuo Kaminise
  • Gilmar GuimarãesEmail author
  • Márcio Bacci da Silva
ORIGINAL ARTICLE

Abstract

The main objective of this work is the experimental investigation of the influence of tool-holder material on tool–chip interface temperature and on the surface temperatures of the cutting tool and tool-holder. The study was conducted in dry machining of grey iron with uncoated cemented carbide inserts, using identical cutting parameters. Five tool-holders were made with materials having different thermal conductivity: copper, brass, aluminium, stainless steel and titanium alloy. The tool-holders are identical and have the same constructive aspects obtained from the commercial tool-holder for machining grey iron. The temperature at the tool–chip interface was measured using the tool–work thermocouple method and the surface temperatures on the insert and tool-holders, by conventional T type thermocouples. The system was modified in order to develop an experimental procedure for the physical compensation of the secondary junctions and parasite thermoelectric e.m.f. signals. Also, modifications were carried out in a conventional tail-stock to obtain the e.m.f. signal between the rotating workpiece and the stationary insert, without significantly altering the stiffness of the system. The tail-stock with mercury bearing inside was insulated electrically. The internal connections became reference junctions at room temperature; otherwise, they would act as secondary junctions. The calibration of the tool–work thermocouple was developed in the experimental apparatus using the same modifications as implemented in the system. Besides the results obtained with the investigation of the effects of the tool-holder materials on the surface temperatures of the insert and the tool-holder and the tool–chip interface temperature, this research presents also contributions to the calibration and performance of the tool–work thermocouple method with physical compensation.

Keywords

Machining Interface chip–tool temperature Tool–work thermocouple Calibration Tool-holder 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Kaminski J, Alvelid B (2000) Temperature reduction in the cutting zone in water-jet assisted turning. J Mat Proc Tech 106:68–73. doi: 10.1016/S0924-0136(00)00640-3 CrossRefGoogle Scholar
  2. 2.
    Sharma VS, Dogra M, Suri NM (2009) Cooling techniques for improved productivity in turning. Int J Mach Tools Manuf 49:435–453. doi: 10.1016/j.ijmachtools.2008.12.010 CrossRefGoogle Scholar
  3. 3.
    Carvalho SR, Lima E, Silva SMM, Machado AR, Guimarães G (2006) Temperature determination at the chip–tool interface using an inverse thermal model considering the tool and tool-holder. J Mat Proc Technol 179:97–104. doi: 10.1016/j.jmatprotec.2006.03.086 CrossRefGoogle Scholar
  4. 4.
    Chen NNS, Ho CF (1976) Measurement of tool-work interface temperature in hot machining. Int J Proc Res 14:657–667. doi: 10.1080/00207547608956385 CrossRefGoogle Scholar
  5. 5.
    Trent EM, Wright PK (2000) Metal cutting, 4th edn. Butterworth, LondonGoogle Scholar
  6. 6.
    Stephenson DA (1991) Assessment of steady state metal cutting temperature models based on simultaneous infrared and thermocouple data. ASME J Eng Ind 113:121–128CrossRefGoogle Scholar
  7. 7.
    Stephenson DA (1993) Tool-work thermocouple temperature measurements—theory and implementation issues. J Eng Ind 115:432–437CrossRefGoogle Scholar
  8. 8.
    Grzesik W (2006) Composite layer-based analytical models for tool-chip interface temperatures in machining medium carbon steels with multi-layer coated cutting tools. J Mater Process Technol 176:102–110. doi: 10.1016/j.jmatprotec.2006.02.025 CrossRefGoogle Scholar
  9. 9.
    Abhang LB, Hameedullah M (2010) Chip-tool interface temperature prediction model for turning process. Int J Eng Sci Technol 2:382–393Google Scholar
  10. 10.
    Doebelin EO (1990) Measurement systems, application and design. McGraw Hill, Inc, New YorkGoogle Scholar
  11. 11.
    Alvelid B (1970) Cutting temperature thermo-electrical measurements. Ann Cirp 53:547–554Google Scholar
  12. 12.
    Chu TH, Da Silva MB, Wallbank J (1998) Temperature of the workpiece surface in machining. Behaviour of Materials in Machining, Stratford-upon-Avon, UKGoogle Scholar
  13. 13.
    Davies MA, Ueda T, Msaoubi R, Mullanyy B, Cooke AL (2007) On the measurement of temperature in material removal processes. Ann Cirp 56:581–604CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London 2014

Authors and Affiliations

  • Almir Kazuo Kaminise
    • 1
  • Gilmar Guimarães
    • 2
    Email author
  • Márcio Bacci da Silva
    • 2
  1. 1.CEFET-MG—Federal Center of Technological Education of Minas GeraisBelo HorizonteBrazil
  2. 2.School of Mechanical EngineeringFederal University of UberlândiaUberlândiaBrazil

Personalised recommendations