Laser Truing and Dressing of Small Vitrified CBN Grinding Wheel

Abstract:

This paper aims at the development of an alterative technique for truing and dressing a small vitrified CBN grinding wheel used for the internal finishing of small holes measuring several millimeters in diameter. In conventional truing and dressing, a single-tip diamond dresser or a rotary GC cup wheel dresser is employed. This levels off the improvement in the wheel truing accuracy because the stiffness of the grinding wheel shaft with an open-sided structure is low, and the shaft is thus deformed easily due to the truing force. In the present work, a new truing and dressing technique is proposed in which a Nd:YAG laser beam is employed as the dresser. Experiments were carried out with respect to the effects of the laser beam conditions (amplitude, width and frequency of pulse, and focus offset) and the relative motion between the laser beam and CBN wheel. It was found that the run-out of the CBN wheel was decreased significantly, and the wheel surface condition was improved greatly after laser truing and dressing.

• Periodical: Key Engineering Materials (Volume 329)
• Pages: 163-168
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.329.163
• Online since: January 2007
• Authors: Yong Bo Wu, Xu Yue Wang, T. Tachibana, M. Kato
• Keywords: Internal Grinding, Laser, Small Holes, Truing and Dressing, Vitrified CBN Wheel

References

[1] Y. Wu, etc.: J. JSAT, (in Japanese), Vol. 47, No. 10 (2003), p.550.

[2] Y. Wu, etc.: Materials Science Forum, Vols. 471-472 (2004), p.101.

[3] K. Syoji : Machine and Tools, (in Japanese), Vol. 2 (1989), p.18.

[4] N.M. Filho, R.T. Coeho and J. Oliveira: Ind. Diamond Rev., Vol. 59 (1999), p.133.

[5] M. Nomura: Key Engineering Materials, Vols. 291-292 (2005), p.183.

[6] E. Westkaemper: CIRP Annals, Vol. 44, No. 1 (1995), p.7.

[7] N.R. Babu and V. Radhakrishnan: ASME J. Eng. for Ind., Vol. 111, No. 3 (1989), p.244.

[8] N.R. Babu and V. Radhakrishnan: ASME J. Eng. for Ind., Vol. 111, No. 3 (1989), p.253.

[9] N.R. Babu and V. Radhakrishnan: Manufacturing Science and Engineering, ASME PED publication edited by K.F. Ehman, Vol. 64 (1993), p.809.

[10] J. Tamaki, M. Futamata and T. Iyama: J. JSPE, Vol. 63, No. 12 (1997), p.1730.

[11] T. Nakajima, K. Ohashi, L. Sun and K. Jitsumori: J. JSPE, Vol. 59, No. 12 (1993), p. (1967).

[12] T. Nakajima, K. Ohashi, L. Sun, K. Jitsumori and D. Yagi: J. JSPE, Vol. 61, No. 4 (1995), p.556.

[13] T. Nakajima, K. Ohashi and D. Yagi: J. JSPE, Vol. 63, No. 8 (1997), p.1153.

[14] C. Zhang and Y.C. Shin: Int. J. Machine Tools & Manufacturing, Vol. 42 (2002), p.825.

[15] X. Chen and Z. Feng: Key Engineering Materials, Vols. 238-239 (2003), p.289.

[16] X. Chen and Z. Feng: Proceedings of ISAAT2004, (2004), p.317.

[17] X.Y. Wang, Y.B. Wu, R.K. Kang, D.M. Guo, J. Xu and M. Kato: Key Engineering Materials, Vols. 304-305 (2006), p.33.

[18] X.Y. Wang, Y.B. Wu, R.K. Kang, J. Wang, W.J. Xu and M. Kato: Key Engineering Materials, Vols. 291-292 (2005), p.177. Fig. 6 SEM images of the wheel surface after dressing with different pulse frequencies 125pps 100pps 75pps.