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TECHNICAL PAPERS

Analytical Prediction of the Chip Back-Flow Angle in Machining With Restricted Contact Grooved Tools

[+] Author and Article Information
N. Fang

Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322-4130

I. S. Jawahir

Machining Research Laboratory, Center for Robotics and Manufacturing Systems, Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0108

J. Manuf. Sci. Eng 125(2), 210-219 (Apr 15, 2003) (10 pages) doi:10.1115/1.1559159 History: Received July 01, 2000; Revised July 01, 2002; Online April 15, 2003
Copyright © 2003 by ASME
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References

Figures

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Definition of the chip back-flow angle ηb
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Schematic diagram of the universal slip-line model and its hodograph for machining with the restricted contact cutaway tool 25
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Six slip-line models previously developed for machining processes 25: (a) Dewhurst’s 26 model; (b) Shi and Ramalingam’s 14 model; (c) Kudo’s 13 model; (d) Johnson’s 11 and Usui and Hoshi’s 12 models; (e) Lee and Shaffer’s 27 model; and (f ) Merchant’s 28 model
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Schematic diagram of the slip-line model for machining with restricted contact grooved tools and its hodograph
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Free-body diagram for the forces and the bending moment acting on the deformed chip
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Measurement of the chip back-flow angle
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Effects of τ/k and PA/k on the chip back-flow angle
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Effect of the backwall friction μb on the chip back-flow angle
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The comparison between the predicted and experimental ηb in Test 1 (Bold letters and digits in the legend indicate the experimental conditions)
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The comparison between the predicted and experimental ηb in Test 2 (Bold letters and digits in the legend indicate the experimental conditions)
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The comparison between the predicted and experimental ηb in Test 3 (Bold letters and digits in the legend indicate the experimental conditions)
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The comparison between the predicted and experimental ηb in Test 4 (Bold letters and digits in the legend indicate the experimental conditions)
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The prediction of the chip back-flow angle in machining with the restricted contact cutaway tool (reproduced from 37)

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