Johns, A, Merson, E, Royer, R et al. (2 more authors) (2018) A Numerical Investigation of Through-Tool Coolant Wetting Behaviour in Twist-Drilling. Journal of Fluid Flow, Heat and Mass Transfer, 5. pp. 44-52. ISSN 2368-6111
Abstract
Supplying coolant through internal coolant channels is a common method of transporting large thermal loads away from the tool in twist-drill machining to increase tool life, aid chip evacuation and avoid catastrophic tool failure. In this work a finite element-based numerical model of the machining process is loosely coupled with a finite volumebased numerical method for predicting the distribution of coolant inside the borehole. These methods are employed to study the effect of channel position on cutting geometry lubrication and uses response surface models to show that all designs do not fully flood the borehole and that not all areas of the tool geometry are lubricated with coolant. Visual analysis of results show that coolant, for all designs, primarily lubricates the area between the cutting edge and the coolant hole exit, however depending on application requirements coolant channel positioning can be used to modify coolant supply to the axial rake, for chip evacuation or to the cutting edge for heat removal.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © Copyright 2018 Authors - This is an Open Access article published under the Creative Commons Attribution License terms (http://creativecommons.org/licenses/by/3.0). Unrestricted use, distribution, and reproduction in any medium are permitted, provided the original work is properly cited. |
Keywords: | Drilling; Coolant; CFD; OpenFOAM; Wetting |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds) |
Funding Information: | Funder Grant number Innovate UK - KTP fkaTechnology Strategy Board (KTP) KTP009868 |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Jun 2018 11:48 |
Last Modified: | 18 Aug 2018 15:23 |
Status: | Published |
Publisher: | Avestia Publishing |
Identification Number: | 10.11159/jffhmt.2018.005 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:131688 |