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RESEARCH PAPERS

An Analysis of Drill Geometry for Optimum Drill Design by Computer. Part I—Drill Geometry Analysis

[+] Author and Article Information
S. Fujii, M. F. DeVries, S. M. Wu

Department of Mechanical Engineering, The University of Wisconsin, Madison, Wis.

J. Eng. Ind 92(3), 647-656 (Aug 01, 1970) (10 pages) doi:10.1115/1.3427827 History: Received December 18, 1969; Online July 15, 2010

Abstract

A comprehensive analysis of the twist drill point geometry is made in order that the high-speed digital computer can be used as an aid in the design of a drill. This subject is treated in two parts. In Part I, the drill geometry is analyzed with respect to the drill flute and flank contours by considering cross sections of the drill cut by planes perpendicular to its axis. Since several important drill angles are defined in planes inclined to the drill axis, the analysis is extended to cover the general case where the drill is cut by any plane inclined to its axis.

Copyright © 1970 by ASME
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