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TECHNICAL PAPERS

Mechanistic Model for Spade Drills for Wood Drilling Operations, Part 1: Model Development

[+] Author and Article Information
Hanxin Zhao, Kornel F. Ehmann

Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3111

J. Manuf. Sci. Eng 125(2), 226-235 (Apr 15, 2003) (10 pages) doi:10.1115/1.1559156 History: Received October 01, 2001; Revised October 01, 2002; Online April 15, 2003
Copyright © 2003 by ASME
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References

Zhao, H., 2000, “Geometry and Mechanics of Spade Drilling Operations,” Ph.D. Thesis, Northwestern University, Evanston, Illinois.
Zhao, H., and Ehmann, K. F., 2001 (Under review), “Topology of Spade Drills for Wood Drilling Operations-Part 1: Spade Drill Point Geometry Definition and Part 2: Spade Drill Point Cutting Geometry Analysis,” ASME J. Manuf. Sci. Eng. .
Kline,  W. A., DeVor,  R. E., and Lindberg,  J. R., 1982, “The Prediction of Cutting Force in End Milling with Application to Cornering Cuts,” Int. J. Mach. Tool Des. Res., 22(1), pp. 7–22.
Yucesan, G., and Altintas, Y., 1993, “Mechanics of the Ball End Milling Process,” ASME Winter Annual Meeting, PED-64, pp. 543–552.
Williams,  R. A., 1974, “A Study of the Drilling Process,” ASME J. Eng. Ind., 106(4), pp. 1207–1215.
Watson,  A. R., 1985, “Drilling Model for Cutting Lip and Chisel Edge and Comparison of Experimental and Predicted Results. I—Initial Cutting Lip Model, II—Revised Cutting Lip Model, III—Drilling Model for Chisel Edge and IV—Drilling Tests to Determine Chisel Edge Contribution to Torque and Thrust,” Int. J. Mach. Tool Des. Res., 25(4), pp. 347–406.
Watson,  A. R., 1985, “Geometry of Drill Elements,” Int. J. Mach. Tool Des. Res., 25(3), pp. 209–227.
Chandrasekharan,  V., Kapoor,  S. G., and DeVor,  R. E., 1995, “A Mechanistic Approach to Predicting the Cutting Forces in Drilling: With Application to Fiber-Reinforced Composite Materials,” ASME J. Eng. Ind., 117(4) pp. 559–570.
Chandrasekharan,  V., Kapoor,  S. G., and DeVor,  R. E., 1997, “A Calibration Procedure for Fundamental Oblique-Cutting Model Coefficients Based on A Three-Dimensional Mechanistic Drilling Force Model,” Transactions of NAMRI/SME, XXV, pp. 255–260.
Budak, E., and Altintas, Y., 1993, “Prediction of Milling Force Coefficients from Orthogonal Cutting Data,” ASME Winter Annual Meeting, PED-64, pp. 453–460.
Shin,  Y. C., and Waters,  A. J., 1997, “A New Procedure to Determine Instantaneous Cutting Force Coefficients for Machining Force Prediction,” Int. J. Mach. Tools Manuf., 37(9), pp. 1337–1351.
Stephenson,  D. A., and Agapiou,  J. S., 1992, “Calculation of Main Cutting Edge Forces and Torque for Drills with Arbitrary Point Geometries,” Int. J. Mach. Tools Manuf. 32(4), pp. 521–538.
Armarego,  E. J. A., and Cheng,  C. Y., 1972, “Drilling With Flat Rake Face and Conventional Twist Drill-I. Theoretical Investigation,” Int. J. Mach. Tool Des. Res., 12, pp. 17–35.
Armarego,  E. J. A., and Wright,  J. D., 1984, “Predictive Models for Drilling Thrust and Torque-A Comparison of Three Flank Configurations,” CIRP Ann., 33(1), p. 5.
Merchant,  M. E., 1945, “Basic Mechanics of the Metal-Cutting Process,” ASME J. Appl. Mech., 66 A-168–A-175.
Gu,  F., Kapoor,  S. G., DeVor,  R. E., and Bandyopadhyay,  P., 1992, “A Cutting Force for Face Milling with a Step Cutter,” Transactions of NAMRI/SME, XX, pp. 361–367.
Endres,  W. J., and Waldorf,  D. J., 1994, “The Importance of Considering Size Effect Along the Cutting Edge in Predicting the Effective Lead Angle for Turning,” Transactions of NAMRI/SME, XXII, pp. 65–72.
Stabler, G. V., 1964, “The Chip Flow Law and its Consequences,” Advances in Machine Tool Design and Research, Oxford: Pergamon Press, Ltd., p. 243.
Oxford,  C. J., 1955, “On the Drilling of Metals I-Basic Mechancis of the Process,” Trans. ASME, 77, pp. 103–114.

Figures

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Generalized helical spade bit geometry
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Elemental model for the cutting edges of the spade drill bit
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Oblique elemental cutting forces (Frames dFthdFlatdFcut and dFndFfdFw)
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The relation between frames dFthdFlatdFcut and dFxdFydFz
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Experiment with pilot hole
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Block diagram of the experimental setup

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