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AssigneeGeneral Electric Company
InventorsAlexander Gabriel Beckford, Madhu Bharadwaj, John Peter Hoffman
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Re-machining a generator rotor tooth dovetail results in a transition zone at an end of the partial re-machined cut, between a newly cut load surface and an original load surface of the rotor tooth. The transition zone is susceptible to stresses that may adversely affect the fatigue strength of the rotor tooth. These stresses can be reduced by the steps of (a) forming at least one axial undercut stress relief groove across the transition zone between the newly cut load surface and the original load surface, (b) cutting and shaping a wedge that will fit in the transition zone, and (c) securing the wedge across the transition zone.
A method of reducing stresses susceptible from partially re-machining a generator rotor tooth dovetail, the re-machining resulting in a transition zone at an end of the partial re-machined cut, between a newly cut load surface and an original load surface of the rotor tooth, the method comprising:
A method of reducing stresses in a transition zone between a newly cut load surface and an original load surface resulting from partially re-machining a generator rotor tooth dovetail, the method comprising:
A re-machined generator rotor tooth dovetail with reduced susceptibility to stresses, the re-machining resulting in a transition zone at an end of a partial re-machined cut, between a newly cut load surface and an original load surface of the rotor tooth, the re-machined generator rotor tooth dovetail being constructed according to the steps of:
Dependencies are inferred from the claim text.