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RESEARCH PAPERS: Production Engineering

Cylindrical Flank Twist Drill Points

[+] Author and Article Information
M. A. Fugelso

Industrial Engineering Department, The Pennsylvania State University, University Park, Pa.

J. Eng. Ind 105(3), 183-186 (Aug 01, 1983) (4 pages) doi:10.1115/1.3185886 History: Received February 07, 1983; Online July 30, 2009

Abstract

The mathematical models of twist drills usually require the cutting edge of the drill to be straight. This requirement restricts the clearance angle near the chisel edge to undesirably small values. By rotating the drill about its own axis before sharpening 5 to 20 deg the clearance angle distribution versus drill radius can be improved at the relatively small penalty of having a slightly curved cutting edge.

Copyright © 1983 by ASME
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