Surface Texturing of Drill Bits for Adhesion Reduction and Tool Life Enhancement

Properly designed micro-scale surface textures can have positive impact on adhesion reduction and lubrication enhancement, which can lead to lower friction and improved performance of a contact interface. The present study aims to utilize this function of textures to reduce the adhesion between a dr...

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Bibliographic Details
Published in:Tribology letters 2013-10, Vol.52 (1), p.113-122
Main Authors: Ling, Tiffany Davis, Liu, Pinzhi, Xiong, Shangwu, Grzina, Donald, Cao, Jian, Wang, Q. Jane, Xia, Z. Cedric, Talwar, Rajesh
Format: Article
Language:English
Subjects:
Adhesion
Chemistry and Materials Science
Corrosion and Coatings
Cutting force
Cutting tools
Drill bits
Drills
Lubrication
Materials Science
Metal plates
Nanotechnology
Neodymium lasers
Original Paper
Physical Chemistry
Recording
Reduction
Surfaces and Interfaces
Texturing
Theoretical and Applied Mechanics
Thermography
Thin Films
Titanium
Tool life
Tribology
Workpieces
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Summary:Properly designed micro-scale surface textures can have positive impact on adhesion reduction and lubrication enhancement, which can lead to lower friction and improved performance of a contact interface. The present study aims to utilize this function of textures to reduce the adhesion between a drill and a workpiece. In this study, rectangular surface textures were generated on the margins of drill bits using a diode-pumped Nd:YVO 4 picosecond laser with a wavelength of 532 nm. Two designs were created in which the textures covered approximately 10 and 20 % of the margin surface area. Textured drills were tested by drilling a series of holes in a titanium plate while recording cutting forces, and the results were compared with the performance of baseline samples. Thermographic heat profiles and visual inspections of the drills were taken at increments of 5 and 10–15 holes, respectively. The comparison demonstrated an encouraging improvement in drill bit life as judged by the number of holes drilled before failure. Textured drills were found to reduce adhesion of titanium chips on the drill margins. This work has demonstrated the potential of texturing to significantly improve the lifetime of drill bits and similar cutting tools.
ISSN:1023-8883
1573-2711
DOI:10.1007/s11249-013-0198-7