In multipoint operations like drilling, cutting velocities and cutting-edge geometries vary along cutting lips so is the rate of progression of flank wear. Analytical evaluation of flank wear land width in the case of complex tools has received a limited attention so far. This work evaluates progression of flank wear in orthogonal machining and adopts it to drilling. An abrasive flank wear has been modeled, wherein, cutting speed determines the rate of abrasion, and the feed rate determines the chip load. The model considers stress distribution along rake surfaces, and temperature-dependent properties of tool and work materials. Assuming that the flank wear follows a typical wear progression as in a pin-on-disk test, the model evaluates cutting forces and the consequent abrasive wear rate for an orthogonal cutting. To adopt it to drilling, variation in cutting velocity and dynamic variation in rake, shear, and friction angles along the length of the cutting lips have been considered. Knowing the wear rate, the length of the worn-out flank (vb) has been evaluated. The model captures progression of flank wear in zones (i), (ii), and (iii) of a typical tool-life plot. It marginally underestimates the wear in the rapid wear region and marginally overestimates it in the steady-state region.
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January 2019
Research-Article
Analytical Model of Progression of Flank Wear Land Width in Drilling
Ranjan Das,
Ranjan Das
Department of Mechanical Engineering,
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
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Suhas S. Joshi,
Suhas S. Joshi
Department of Mechanical Engineering,
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
e-mail: ssjoshi@iitb.ac.in
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
e-mail: ssjoshi@iitb.ac.in
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Harish C. Barshilia
Harish C. Barshilia
Nanomaterials Research Laboratory,
Surface Engineering Division CSIR-National
Aerospace Laboratories,
Bangalore 560 017, India
Surface Engineering Division CSIR-National
Aerospace Laboratories,
Bangalore 560 017, India
Search for other works by this author on:
Ranjan Das
Department of Mechanical Engineering,
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
Suhas S. Joshi
Department of Mechanical Engineering,
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
e-mail: ssjoshi@iitb.ac.in
Indian Institute of Technology Bombay,
Powai 400 076, Mumbai, India
e-mail: ssjoshi@iitb.ac.in
Harish C. Barshilia
Nanomaterials Research Laboratory,
Surface Engineering Division CSIR-National
Aerospace Laboratories,
Bangalore 560 017, India
Surface Engineering Division CSIR-National
Aerospace Laboratories,
Bangalore 560 017, India
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received May 10, 2017; final manuscript received June 3, 2018; published online July 18, 2018. Assoc. Editor: Sinan Muftu.
J. Tribol. Jan 2019, 141(1): 011601 (9 pages)
Published Online: July 18, 2018
Article history
Received:
May 10, 2017
Revised:
June 3, 2018
Citation
Das, R., Joshi, S. S., and Barshilia, H. C. (July 18, 2018). "Analytical Model of Progression of Flank Wear Land Width in Drilling." ASME. J. Tribol. January 2019; 141(1): 011601. https://doi.org/10.1115/1.4040511
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