[KSCI] Korea Science Citation Index Service

Tool Material Dependence of Hard Turning on The Surface Quality

Park, Young-Woo (Department of Mechatronics Engineering, Chungnam National University)

Publication Information

International Journal of Precision Engineering and Manufacturing / v.3, no.1, 2002 , pp. 76-82 More about this Journal

Abstract

This paper presents an experimental study of the effect of cutting tool materials on surface quality when turning hardened steels. Machining tests on a lathe are performed using polycrystalline cubic boron nitride (PCBN) and ceramic tools at various cutting conditions without coolant. From the experiments, it is observed that the radial force is the largest force component regardless the type of tool used. The specific cutting energy for the hard turning is estimated to be considerably smaller than the specific grinding energy. It is also found that cutting force and surface roughness with the PCBN tools are higher and better than those with the ceramic tools under the same cutting condition. It is due that the PCBN tools transfer the generated heat more effectively than the ceramic tools due to their higher thermal conductivity. The optimal cutting conditions for the best surface quality are selected by using an orthogonal array concept.

Keywords

hard turning; surface roughness; surface quality; orthogonal array; thermal conductivity;

Citations & Related Records

Reference

1	Hasan, R., Why are you still grinding?, Manufacturing Engineering, pp. 76 - 80, February 1998
2	Naik, S., Guo, C., Malkin, S., Viens, D. V., Pater, C. M., and Reder, S. G., 'Experimental investigation of hard turning,' Proceeding of 2 $2^{nd}$ International Machining and Grinding Conference, Dearborn, MI, U.S.A., pp. 523 - 539, May 1997
3	Friedman, M. Y., and Lenz, E., 'Investigation of the Tool-Chip Contact Length in Metal Cutting,' International Journal of Machine Tool Design and Research, 10, pp. 401 - 416, 1971 DOI
4	Vyas, A., and Shaw, M. C., 'Mechanics of Saw-Tooth Chip Formation in Metal Cutting,' Journal of Manufacturing Science and Engineering, Vol. 121, pp. 163- 172, 1999 DOI ScienceOn
5	Konig, W., Klinger, M., and Link, R., 'Machining Hard Materials with Geometrically Defined Cutting Edges - Field of Applications and Limitations,' Annals of the CIRP, Vol. 39, pp. 61 - 64, 1990 DOI ScienceOn
6	Boothroyd., G., and Knight, W. A., Fundamentals of Machining and Machine Tools, Marcel Dekker, Inc., NewYork. NY, 1989
7	Belavendram, N., Quality by Design, Prentice-Hall, Englewood Cliffs, NJ, 1995
8	T $\ddot o$ nshoff, H. K., Wobker, H., and Brandt, D., 'Hard Turning - Influences on the Workpiece Properties,' Transactions of NAMRI/SME, Vol. XXIII, pp. 215 - 220, 1995
9	Phadke, M. S., Quality Engineering Using Robust Design, Prentice-Hall, Englewood Cliffs, NJ, 1989
10	Balaji, A. K., Sreeram, G., Jawahir, I. S., and Lenz, E., 'The Effects of Cutting Tool Thermal Conductivity on Tool-Chip Contact Length and Cyclic Chip Pormation in Machining with Grooved Tool,' Annals of the CIRP, Vol. 48/1, pp. 33 - 38, 1999 DOI ScienceOn
11	Chou, Y. K., and Evans, C. J., 'Process Effects on White Layer Formation in Hard Turning.' Transactions of NAMRI/SME, Vol. XXVI, pp. 117 - 122. 1998
12	Sista, P. S., Swain, S. O., Chandrasekar, S., and Farris, T. N., 'Tool Wear Characteristics of CBN Tools in the Finish Machining of Tool Steels,' Med- Vol. 6-2, Manufacturing Science and Technology, Vol.2,ASME,pp. 161-168, 1997