This paper develops a new analytical model to predict the chip back-flow angle in machining with restricted contact grooved tools. The model is derived from a recently established universal slip-line model for machining with restricted contact cutaway tools. A comprehensive definition of the chip back-flow angle is presented first, and based on this, a quantitative analysis of the chip back-flow effect is established for a given set of cutting conditions, tool geometry, and variable tool-chip interfacial stress state. The model also predicts the cutting forces, the chip thickness, and the chip up-curl radius. A full experimental validation of the analytical predictive model involving the use of high speed filming technique is then presented for the chip back-flow angle. This validation provides a range of feasible/prevalent tool-chip interfacial frictional conditions for the given set of input conditions.
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Analytical Prediction of the Chip Back-Flow Angle in Machining With Restricted Contact Grooved Tools
N. Fang, Mem. ASME, Assistant Professor,,
N. Fang, Mem. ASME, Assistant Professor,
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322-4130
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I. S. Jawahir, Mem. ASME, Professor,
I. S. Jawahir, Mem. ASME, Professor,
Machining Research Laboratory, Center for Robotics and Manufacturing Systems, Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0108
Search for other works by this author on:
N. Fang, Mem. ASME, Assistant Professor,
Department of Mechanical and Aerospace Engineering, Utah State University, Logan, UT 84322-4130
I. S. Jawahir, Mem. ASME, Professor,
Machining Research Laboratory, Center for Robotics and Manufacturing Systems, Department of Mechanical Engineering, University of Kentucky, Lexington, KY 40506-0108
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received July 2000; Revised July 2002. Associate Editor: Y. Artintas.
J. Manuf. Sci. Eng. May 2003, 125(2): 210-219 (10 pages)
Published Online: April 15, 2003
Article history
Received:
July 1, 2000
Revised:
July 1, 2002
Online:
April 15, 2003
Citation
Fang, N., and Jawahir, I. S. (April 15, 2003). "Analytical Prediction of the Chip Back-Flow Angle in Machining With Restricted Contact Grooved Tools ." ASME. J. Manuf. Sci. Eng. May 2003; 125(2): 210–219. https://doi.org/10.1115/1.1559159
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