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RESEARCH PAPERS: Papers on Production Engineering

Tool Fracture Probability Under Steady State Cutting Conditions

[+] Author and Article Information
W. S. Sampath, M. C. Shaw

Arizona State University, Tempe, Ariz.

Y. M. Lee

Kyung-Pook National University, Daegu, Korea

J. Eng. Ind 106(2), 161-167 (May 01, 1984) (7 pages) doi:10.1115/1.3185927 History: Received October 31, 1983; Online July 30, 2009

Abstract

Tool fracture probability for 6 weight percent cobalt tungsten carbide tools turning AISI 4340 steel (HB = 235 kg/mm2 ) at 200 fpm was found to be small at the beginning of a cut or during steady state cutting at feeds up to 0.100 ipr (2.54 mm/rev). Steady state fracture probability was found to be high only when cutting with severe chatter at feeds of 0.100 ipr (2.54 mm/rev) or higher. Tool fracture probabilities were determined by finite element analysis for elastic tool stresses, an intensified maximum tensile stress fracture criterion associated with circular defects [9] and Weibull plot giving percent failed versus fracture stress in uniaxial compression.

Copyright © 1984 by ASME
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