In drilling, the primary cutting lips and the secondary cutting lips of the drill shear the material while the central portion of the chisel edge indents the workpiece, making the cutting process complex to understand. As we go for micro-drilling, it exhibits an added complexity to the cutting mechanism when the edge radius gets comparable to chip thickness at low feeds. The presented work models the forces by the primary cutting lip of a micro-drill analytically using slip-line field that includes the changes in the effective rake angle and dead metal cap during cutting for cases of shearing as well as ploughing. To study the variation of forces experimentally, the primary cutting lip and chisel edge forces are separated out by drilling through pilot holes of diameter slightly above the drill-web thickness. Finally, the analytical and experimental results have been compared and the model has been calibrated.
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ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing
June 4–8, 2012
Notre Dame, Indiana, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5499-0
PROCEEDINGS PAPER
Mathematical Modeling of Cutting Forces in Micro-Drilling Available to Purchase
Kumar Sambhav,
Kumar Sambhav
Indian Institute of Technology Kanpur, Kanpur, UP, India
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Puneet Tandon,
Puneet Tandon
PDPM IIITDM Jabalpur, Jabalpur, MP, India
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Shiv G. Kapoor,
Shiv G. Kapoor
University of Illinois at Urbana Champaign, Urbana, IL
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Sanjay G. Dhande
Sanjay G. Dhande
Indian Institute of Technology Kanpur, Kanpur, UP, India
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Kumar Sambhav
Indian Institute of Technology Kanpur, Kanpur, UP, India
Puneet Tandon
PDPM IIITDM Jabalpur, Jabalpur, MP, India
Shiv G. Kapoor
University of Illinois at Urbana Champaign, Urbana, IL
Sanjay G. Dhande
Indian Institute of Technology Kanpur, Kanpur, UP, India
Paper No:
MSEC2012-7399, pp. 979-985; 7 pages
Published Online:
July 19, 2013
Citation
Sambhav, K, Tandon, P, Kapoor, SG, & Dhande, SG. "Mathematical Modeling of Cutting Forces in Micro-Drilling." Proceedings of the ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. ASME 2012 International Manufacturing Science and Engineering Conference. Notre Dame, Indiana, USA. June 4–8, 2012. pp. 979-985. ASME. https://doi.org/10.1115/MSEC2012-7399
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