A New Model and Analysis of Orthogonal Machining With an Edge-Radiused Tool

[+] Author and Article Information
Jairam Manjunathaiah, William J. Endres

Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, MI 48109-2125

J. Manuf. Sci. Eng 122(3), 384-390 (Sep 01, 1999) (7 pages) doi:10.1115/1.1285886 History: Received December 01, 1997; Revised September 01, 1999
Copyright © 2000 by ASME
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Connolly and Rubenstein’s cutting model
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Geometric model of the cutting process with an edge radius tool
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Velocity hodograph for the new geometric model for orthogonal cutting
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Force balance on the lower boundary of the shear zone
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Cutting force component versus uncut chip thickness for 70-30 brass [γo=−5 deg,V=7.8 mm/s]
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Thrust force component versus uncut chip thickness for 70-30 brass [γo=−5 deg,V=7.8 mm/s]
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Calculated normal stress factor k versus uncut chip thickness [θ=30 deg, ψ=20 deg]
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Calculated shear stress versus uncut chip thickness [θ=30 deg, ψ=20 deg]
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Predicted shear strain rate versus uncut chip thickness [θ=30 deg, ψ=20 deg]
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Log(S) versus Log(γ̇) [θ=30 deg, ψ=20 deg]
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Shear angle versus average rake angle for θ=50 deg. Machining data from Thomsen et al. 14.
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Changing strains with tools of different rake angle. Machining data from Thomsen et al. 14.
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A log-log plot of shear stress versus shear strain rate for θ=50 deg and ψ=20 deg. Machining data from Thomsen et al. 14.




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