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TECHNICAL PAPERS

About Hob Idle Distance in Gear Hobbing Operation

[+] Author and Article Information
Stephen P. Radzevich

New Venture Gear, Inc., 6600 New Venture Gear Dr., East Syracuse, NY 13057e-mail: stephen_radzevich@hotmail.com

J. Mech. Des 124(4), 772-786 (Nov 26, 2002) (15 pages) doi:10.1115/1.1517561 History: Received November 01, 2001; Online November 26, 2002
Copyright © 2002 by ASME
Topics: Gears , Machining
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References

Figures

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Kinematics of climb hobbing and cutter total travel distance in machining of a cylindrical gear
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Hob idle distance and tolerance on the hobbed tooth
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Impact of tolerance onto length of the hob idle distance
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Determination of the shortest axial dimension of a cluster gear—Case #1
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Determination of the shortest axial dimension of a cluster gear—Case #2
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Comparison length of the hob approach distance E and of the hob idle distance U
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Minimal axial distance lmin of cluster gear
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Lack of the hob idle distance causes deviation of an actual gear tooth surface from desired gear tooth surface
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Generation of the imaginary auxiliary rack as an enveloping surface to consecutive positions of the tooth surface of the gear to be machined
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Front view on the imaginary auxiliary rack of involute hob
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Relative orientation of the spur gear to be machined and of the gear hob with 1-positive, 2-equal to zero, and 3-negative gear hob-setting angle ζh
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Derivation of the equation of the machining surface of a hob for machining of involute gear
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Impact of the gear hob-setting angle onto length of the hob idle distance in hobbing of involute gear
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Determination of the hob idle distance in hobbing of a spur involute gear
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Determination of the hob idle distance in hobbing of a helical involute gear
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Length of generating zone in hobbing of involute gear
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Coordinate systems to be applied

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