An experimental technique for the measurement of temperature fields for the orthogonal cutting in high speed machining

Cutting temperature and heat generated at the tool-chip interface during high speed machining operations have been recognized as major factors that influence tool performance and workpiece geometry or properties. This paper presents an experimental setup able to determine the temperature field in the cutting zone, during an orthogonal machining operation with 42 CrMo 4 steel. The machining was performed with a gas gun, using standard carbide tools TiCN coated and for cutting speeds up to 50 ms-1. The technique of temperature measurement was developed on the principle of pyrometry in the visible spectral range by using an intensified CCD camera with very short exposure time and interference filter at 0.8 μm. Temperature gradients were obtained in an area close to the cutting edge of the tool, along the secondary shear zone. Effects of the cutting speed and the chip thickness on the temperature profile in the chip were determined. Maximum chip temperature of about 825 °C was found, for cutting speed close to 20 ms-1, located at a distance of 300 μm of the tool tip. It was established that this experimental arrangement is quite efficient and can provide fundamental data on the temperature field in materials during orthogonal high speed machining.

[1]  G. Byrne.  Thermoelectric signal characteristics and average interfacial temperatures in the machining of metals under geometrically defined conditions , 1987 .

[2]  Herchang Ay,et al.  Heat transfer and life of metal cutting tools in turning , 1998 .

[3]  G. Boothroyd,et al.  Photographic technique for the determination of metal cutting temperatures , 1961 .

[4]  Gustavo Sutter,et al.  An Experimental Study of High Speed Orthogonal Cutting , 1998 .

[5]  Hong-Tsu Young,et al.  Cutting temperature responses to flank wear , 1996 .

[6]  Philippe Hervé,et al.  Optical measurements of phase transition and temperature in adiabatic shear bands in titanium alloys , 2000 .

[7]  R. Komanduri,et al.  A review of the experimental techniques for the measurement of heat and temperatures generated in some manufacturing processes and tribology , 2001 .

[8]  D. O’Sullivan,et al.  Temperature measurement in single point turning , 2001 .

[9]  James Wallbank,et al.  Cutting temperature: prediction and measurement methods—a review , 1999 .

[10]  M. C. Shaw,et al.  Tool Face Temperatures in High Speed Milling , 1990 .

[11]  R. V. Dunkle.  Thermal Radiation Characteristics of Surfaces , 1963 .

[12]  T. Kitagawa,et al.  Temperature and wear of cutting tools in high-speed machining of Inconel 718 and Ti6Al6V2Sn , 1997 .

[13]  W. Grzesik,et al.  Experimental investigation of the cutting temperature when turning with coated indexable inserts , 1999 .

[14]  C. Weng,et al.  Estimation of cutting temperature in high speed machining , 1992 .

[15]  David K. Aspinwall,et al.  Temperature measurement when high speed machining hardened mould/die steel , 1999 .

[16]  T. I. El-Wardany,et al.  Cutting temperature of ceramic tools in high speed machining of difficult-to-cut materials , 1996 .

[17]  A. Molinari,et al.  Experimental Analysis of the Cutting Process and Chip Formation at High Speed Machining , 1997 .

[18]  T. Kitagawa,et al.  Analytical Prediction of Three Dimensional Cutting Process—Part 3: Cutting Temperature and Crater Wear of Carbide Tool , 1978 .

[19]  S. H. Yeo,et al.  Assessment of the thermal effects on chip surfaces , 2000 .

[20]  David A. Stephenson,et al.  Tool-Work Thermocouple Temperature Measurements—Theory and Implementation Issues , 1993 .

[21]  M. C. Shaw.  Metal Cutting Principles , 1960 .

[22]  Herbert Schulz,et al.  High-Speed Machining , 1992 .

[23]  M. P. Groover,et al.  A Continuing Study in the Determination of Temperatures in Metal Cutting Using Remote Thermocouples , 1971 .