Performance Evaluation of Chip Breaker Utilizing Neural Network

신경망기법에 의한 칩브레이커의 성능평가

  • 김홍규 (부산대학교 대학원 지능기계공학과) ;
  • 심재형 (부산대학교 대학원 지능기계공학과)
  • Published : 2007.06.15

Abstract

The continuous chip in turning operation deteriorates precision of workpiece and causes a hazardous condition to operator. Thus the chip form control becomes a very important task for reliable machining process. So, grooved chip breaker is widely used to obtain reliable discontinuous chip. However, developing new cutting insert having chip breaker takes long time and needs lots of research expense due to a couple of processes such as forming, sintering, grinding and coating of product and many different evaluation tests. In this paper, performance of commercial chip breaker is evaluated with neural network which is learned with a back propagation algorithm. For the evaluation, several important elements(depth of cut, land, breadth, radius) which directly influence the chip formation were chosen among commercial chip breakers and were used as input values of neural network. With the results of these input values, the performance evaluation method was developed and applied that method to the commercial tools.

Keywords

References

  1. Boothroyd, 1975, Fundamentals of Metal Machining and Machine Tools, McGraw-Hill, New York, pp. 187-189
  2. Kordor, S., Ber, A. and Lenz, E., 1979, 'On the Mechanism of Chip Breaking,' Journal of Engineering for Industry, Trans. ASME, Vol. 101, 1979, pp. 241-249 https://doi.org/10.1115/1.3439503
  3. Lee, Y. M., Yang, S. H. and Chang, S. I., 2006, 'Assessment of chip-breaking characteristics using new chip-breaking index,' Journal of Materials Processing Technology, Vol. 173, Iss. 2, pp. 166-171 https://doi.org/10.1016/j.jmatprotec.2005.05.057
  4. Das, N. S., Chawla, B. S. and Biswas, C. K., 2005, 'An analysis of strain in chip breaking using slip-line field theory with adhesion friction at chip/tool interface,' Journal of Materials Processing Technology, Vol. 170, Iss. 3, pp. 509-515 https://doi.org/10.1016/j.jmatprotec.2005.05.032
  5. Maity, K. P. and Das, N. S., 1998, 'A slip-line solution to metal machining using a cutting tool with a step-type chip-breaker,' Journal of Materials Processing Technology, Vol. 79, Iss. 1-3, pp. 217-223 https://doi.org/10.1016/S0924-0136(98)00015-6
  6. Mesquita, R. M. D., Soares, F. A. M. and Barata Marques, M. J. M., 1996, 'An experimental study of the effect of cutting speed on chip breaking,' Journal of Materials Processing Technology, Vol. 56, Iss. 1-4, pp. 313-320 https://doi.org/10.1016/0924-0136(95)01845-X
  7. Kharkevich, A. and Venuvinod, P. K., 1999, 'Basic Geometric Analysis of 3-D Chip Forms in Metal Cutting : Part 1,' International Journal of Machine Tools and Manufacture, Vol. 39, No.5, pp. 751-769 https://doi.org/10.1016/S0890-6955(98)00065-0
  8. Kharkevich, A. and Venuvinod, P. K., 1999, 'Basic Geometric Analysis of 3-D Chip Forms in Metal Cutting : Part 2,' International Journal of Machine Tools and Manufacture, Vol. 39, No. 6, pp. 965-983 https://doi.org/10.1016/S0890-6955(98)00066-2
  9. Kharkevich, A. and Venuvinod, P. K., Extension of Basic Geometric Analysis of 3-D Chip Forms in Metal Cutting to Chips with Obstacle-Induced Deformation, International Journal of Machine Tools and Manufacture, Vol. 42, No. 2, 2002, pp. 201-213 https://doi.org/10.1016/S0890-6955(01)00115-8
  10. Shinozuka, J., Obikawa, T. and Shirakashi, T., 1996, 'Chip breaking analysis from the viewpoint of the optimum cutting tool geometry design,' Journal of Materials Processing Technology, Vol. 62, Iss. 4, pp. 345-351 https://doi.org/10.1016/S0924-0136(96)02433-8
  11. Jawahir, I. S. and van Luttervelt, C. A., 1993, 'Recent Developments in Control Research and Applications,' Annals of the CIRP, Vol. 42, No. 2, pp. 659-694 https://doi.org/10.1016/S0007-8506(07)62531-1
  12. Jawahir, I. S., Li, P. X., Ghosh, R. and Exner, E. L., 1995, 'A New Parametric Approach for the Assessment of Comprehensive Tool-Wear in Coated Grooved Tools,' Annals of the CIRP, Vol. 44, No. 1, pp. 49-54 https://doi.org/10.1016/S0007-8506(07)62273-2
  13. Kim, D. H., Park, S. G. and Kim, K. W., 2000, 'The Prediction of Chip Flow Angle on Chip Breaker Shape Parameters,' Journal of KSMTE, Vol. 9, No. 2, pp. 96-101
  14. Shaw, M. C., 1996, Metal Cutting Principles, Oxford Science Publication, pp. 61-88
  15. Boothroyd, 1975, Fundamentals of Metal Machining and Machine Tools, McGraw-Hill, New York, pp. 115-117
  16. Michael, C., 1993, Neural Networks : A Tutorial, Prentice Hall, pp. 57-72