Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81146
Title: Theoretical and experimental investigations of tool tip vibration in single point diamond turning of titanium alloys
Authors: Yip, WS 
To, S 
Keywords: Material swelling
Titanium alloys
Single point diamond turning
Tool tip vibration
Issue Date: 2019
Publisher: Molecular Diversity Preservation International
Source: Micromachines, Apr. 2019, v. 10, no. 4, 231, p. 1-14 How to cite?
Journal: Micromachines 
Abstract: The material swelling effect in single point diamond turning (SPDT) causes ragged materials on a machined surface which slows down the movements of tool tip vibration, and acts as a simple impacted pendulum system with a damping effect and displays a single twin peak in fast Fourier transform (FFT). Due to the low elastic modulus and low thermal conductivity of titanium alloys, the material swelling effect of titanium alloys in SPDT is much more serious than that of traditional metals. For this reason, the tool tip vibration in SPDT of titanium alloys is expected to be different from previous reports. In this study, apart from the demonstration of the original single twin peak induced from the material swelling effect by the main cutting motion, we reported recently that there exists another twin peak induced by secondary material swelling arising from the movement of tool tip vibration in the SPDT of titanium alloys. The additional twin peak was located at the right side of the original twin peak in FFT, displaying two twin peaks in the frequency domain of cutting force and suggesting the existence of another tool tip vibration system with a new damping factor in the SPDT of titanium alloys. Combining the effects of primary and secondary material swelling, the new dynamic model with the modified damping factor of tool tip vibration system are developed, which surface roughness of the machined titanium alloys in SPDT was predicted in higher accuracy by using the new model. The FFT of cutting force, surface roughness, and surface profile were provided in this article for the experimental validations.
URI: http://hdl.handle.net/10397/81146
ISSN: 2072-666X
DOI: 10.3390/mi10040231
Rights: © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The following publication Yip, W.S.; To, S. Theoretical and Experimental Investigations of Tool Tip Vibration in Single Point Diamond Turning of Titanium Alloys. Micromachines 2019, 10, 231, 14 pages is available at https://dx.doi.org/10.3390/mi10040231
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