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TECHNICAL PAPERS

A Chisel Edge Model for Arbitrary Drill Point Geometry

[+] Author and Article Information
Anish Paul, S. G. Kapoor, R. E. DeVor

Department of Mechanical and Industrial Engineering, University of Illinois at Urbana—Champaign, Urbana, IL 61801

J. Manuf. Sci. Eng 127(1), 23-32 (Mar 21, 2005) (10 pages) doi:10.1115/1.1826076 History: Received May 27, 2003; Revised March 11, 2004; Online March 21, 2005
Copyright © 2005 by ASME
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References

Figures

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Conical drill grinding profile
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Ellipsoidal drill grinding profile for a Racon® drill
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Hyperboloidal drill grinding profile
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Flank contour intersections on a conical chisel edge
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Effect of feed velocity
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Dynamic cutting angle variation with radial distance on the chisel edge of a Racon® drill
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Dynamic cutting angle variation with radial distance on the chisel edge of a helical drill
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Vectors and angles for a chisel edge element
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Variation of inclination angle with radial distance for different point geometries
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Flank contour simulation
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View of the conical chisel edge with the calculated points superimposed
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View of the Racon® chisel edge with the calculated points superimposed
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View of the helical chisel edge with the calculated points superimposed
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Thrust profile using pilot-hole
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Workpiece with a protrusion
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Thrust profile using protrusion

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