Theoretical and Experimental Investigations of Tool Tip Vibration in Single Point Diamond Turning of Titanium Alloys
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2019-03-31 |
| Journal | Micromachines |
| Authors | Wai Sze Yip, Suet To |
| Institutions | Hong Kong Polytechnic University |
| Citations | 5 |
Abstract
Section titled âAbstractâThe 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.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
Section titled âReferencesâ- 1997 - Titanium alloys and their machinabilityâReview [Crossref]
- 1983 - Study on machining of titanium alloys [Crossref]
- 2000 - Evaluation of wear mechanisms of coated carbide tools when face milling titanium alloy [Crossref]
- 2001 - Tool life and surface integrity in turning titanium alloy [Crossref]
- 2001 - New cooling approach and tool life improvement in cryogenic machining of titanium alloy Ti-6Al-4V [Crossref]
- 2006 - An experimental investigation of effects of cooling/lubrication conditions on tool wear in high-speed end milling of Ti-6Al-4V [Crossref]
- 2004 - The determination of ploughing force and its influence on material properties in metal cutting [Crossref]
- 1997 - An enhanced dynamic model in turning including the effect of ploughing forces [Crossref]
- 2001 - Characterisation of nanosurface generation in single-point diamond turning [Crossref]
- 1997 - Ultraprecision diamond turning of aluminium single crystals [Crossref]