A Study on the Cutting Characteristics and Detection of the Abnormal Tool State in Turning of Ti-6Al-4V ELI

Author:

Shin Hyung Gon1,Yoo Seung Hyeon1,Park Seon Woo1,Hong Dong Pyo1

Affiliation:

1. Chon-buk National University

Abstract

The cutting characteristics of biomaterials (Ti-6Al-4V ELI) by tools are investigated with respect to cutting force, work piece surface roughness and tool flank wear by the vision system. Ti-6Al-4V ELI titanium turning is carried out with various cutting conditions; spindle rotational speed and feed rate. Back propagation neural networks (BPNs) are used for detection of tool wear. The input vectors of neural network comprise of spindle rotational speed, feed rates, vision flank wear, and cutting force signals. The output is the tool wear state which is either usable or failure. The detection of the abnormal states using BPNs achieves 97.5% reliability even when the spindle rotational speed and feed rate are changed.

Publisher

Trans Tech Publications, Ltd.

Reference6 articles.

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3. N. Fang, Q. Wu., in: A comparative study of the cutting forces in high speed machining of Ti–6Al–4V and Inconel 718 with a round cutting edge tool, Journal of Materials Processing Technology, Vol. 209 (2009), pp.4385-4389.

4. Lee, Y. T. and Lee, J. H., in: Machining Technology Titanium, The Korea Metal Journal, Korea (2006), pp.45-65.

5. J. G. Choi, H. S. Kim and J. O. Chung, in: Turning Characteristics of Various Tool Materials in the Machining of Ti-6Al-4V, Transactions of the Korean Society of Machine Tool Engineers, Vol. 17 (2008), pp.38-44.

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