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US 12,007,011 B2Granted
Gearbox assembly
AssigneesGeneral Electric Company, GE Avio S.r.l.
InventorsAndrea Piazza, Ravindra Shankar Ganiger
Life of this patent
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Abstract
A gearbox assembly includes a first gear and a second gear. The first gear includes a plurality of first gear teeth. The second gear includes a plurality of second gear teeth. The plurality of first gear teeth and the plurality of second gear teeth mesh with each other as the first gear and the second gear rotate. A profile shape of at least one first gear tooth of the first gear is characterized by a total profile modification between 66 micrometers and 120 micrometers.
Claims18
A gearbox assembly comprising:
- a first gear comprising a plurality of first gear teeth;
- and
- a second gear comprising a plurality of second gear teeth, the plurality of first gear teeth and the plurality of second gear teeth meshing with each other as the first gear and the second gear rotate,
- wherein a profile shape of at least one first gear tooth of the first gear is characterized by a total profile modification between 66 micrometers and 120 micrometers, wherein the total profile modification is a function of a tangential force on the at least one first gear tooth, a stiffness per unit length of the at least one first gear tooth, a mesh contact ratio of the first gear and the second gear, and a unit length of contact between the at least one first gear tooth and a respective second gear tooth.
1 more element
A turbine engine comprising:
- a fan including a fan rotor;
- an engine core including a shaft assembly;
- and
- a gearbox assembly comprising:
- a first gear coupled to the shaft assembly of the engine core, the first gear comprising a plurality of first gear teeth;
- and
- a second gear coupled to the fan rotor of the fan, the second gear comprising a plurality of second gear teeth, the plurality of first gear teeth and the plurality of second gear teeth meshing with each other as the first gear and the second gear rotate,
- wherein a profile shape of at least one first gear tooth of the first gear is characterized by a total profile modification between 66 micrometers and 120 micrometers, wherein the total profile modification is a function of a tangential force on the at least one first gear tooth, a stiffness per unit length of the at least one first gear tooth, a mesh contact ratio of the first gear and the second gear, and a unit length of contact between the at least one first gear tooth and a respective second gear tooth.
5 more elements
Dependencies are inferred from the claim text.