Effect of Cutting Edge Roundness on Work Hardened Surface Layer in Metal Cutting

Abstract:

In the ultra-precision machining, the smaller the undeformed chip thickness is, the more the machined surface integrity is affected by the cutting edge roundness of the cutting tool. In this research, the work hardened surface layer was dealt with as an evaluation of the machined surface integrity and the effect of the mechanical factors on work hardening was investigated experimentally in orthogonal cutting. In the case of a rounded cutting edge, unlike a sharp one, it makes the generation mechanism of the work hardened surface layer complicated. In this research, the mechanical dominant factors were investigated by comparing the effect of the rounded cutting edge on the work hardened surface layer, which counts for much in ultra precision machining involved in small undeformed chip thickness, with that of the sharp cutting edge.

• Periodical: Key Engineering Materials (Volumes 407-408)
• Pages: 440-443
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.407-408.440
• Online since: February 2009
• Authors: Rikio Hikiji, Eiji Kondo, Minoru Arai
• Keywords: Cutting, Cutting Edge Roundness, Equivalent Shear Angle, Hardness, Mechanical Factors, Surface Integrity, Work Hardened Surface Layer, Work-Hardening

References

[1] T. Moriwaki: J. Jpn. Soc. Prec. Eng., Vol. 65, No. 1 (1999), p.25.

[2] S. Harada, S. Nishida, T. Endo, K. Suehiro, Y. Fukushima and H. Yamaguchi: Trans. Jpn. Soc. Mech. Eng., Vol. 53, No. 487, A(1987), p.401.

[3] N. Ikawa: Science of Machine, Vol. 24, No. 12 (1972), p.1545.

[4] R. Hikiji and M. Arai: J. Jpn. Soc. Prec. Eng., Vol. 61, No. 6 (1995), p.839.

[5] J. Kaczmarek: Machine and Tool, Vol. 9, No. 5(1965), p.69.

[6] X. Wang, K. Nakayama and M. Arai: J. Jpn. Soc. Prec. Eng., Vol. 55, No. 4 (1989), p.709.

[7] R. Hikiji, E. Kondo, N. Kawagoishi and M. Arai: Trans. Jpn. Soc. Mech. Eng., Vol. 66, No. 647, C(2000), p.2423.

[8] R. Hikiji, E. Kondo, N. Kawagoishi and M. Arai: Trans. Jpn. Soc. Mech. Eng., Vol. 68, No. 671, C(2002), p.2169.

[9] C.R. Liu and M.M. Barash: Trans. ASME, J. Eng. Ind., Vol. 104, No. 8(1982), p.257.

[10] K. Iwata, K. Ueda and K. Okuda: J. Jpn. Soc. Prec. Eng., Vol. 48, No. 4 (1982), p.510.

[11] M. Hashimura, Y.P. Chang and D. Dornfeld: Trans. ASME, J. Manuf. Sci. End., Vol. 121, No. 1, Feb. (1999), p.1.

[12] E. Usui and R. Makino: J. Jpn. Soc. Prec. Eng., Vol. 33, No. 4 (1967), p.245.

[13] T. Yuta and K. Tagashira: J. Jpn. Soc. Prec. Eng., Vol. 39, No. 3 (1973), p.312.