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US 10,371,244 B2Granted
Additive manufactured gear for a geared architecture gas turbine engine
AssigneeUnited Technologies Corporation
InventorMichael E McCune
Life of this patent
Estimating the term…
Abstract
A gear includes a multiple of gear teeth that extend from an outer portion of a rim about an axis and an inner portion of the rim about the axis, the inner portion of the rim additive manufactured.
Claims14
A gear, comprising:
- a multiple of gear teeth that extend from an outer portion of a rim about an axis;
- said gear teeth subtractive manufactured from the outer portion;
- and
- an inner portion of said rim about said axis, said inner portion of said rim additive manufactured to the outer portion at an interface;
- wherein said inner portion of said rim includes a matrix;
- wherein said matrix forms a lattice structure.
3 more elements
A geared architecture for a gas turbine engine, said geared architecture, comprising:
- a sun gear;
- a ring gear that surrounds said sun gear;
- and
- a multiple of intermediate gears in meshing engagement with said sun gear and said ring gear, each of said multiple of intermediate gears including an inner portion of a rim, said inner portion of said rim being additive manufactured, and a multiple of gear teeth that extend from an outer portion of said rim of each of said multiple of intermediate gears about an axis;
- said inner portion of said rim additive manufactured to the outer portion at an interface, said gear teeth manufactured via subtractive manufacturing;
- wherein said inner portion of said rim forms a matrix that defines a lattice structure.
3 more elements
A method of manufacturing a gear, comprising:
- subtractive manufacturing a multiple of gear teeth from an outer portion of a rim;
- and
- additive manufacturing an inner portion of the rim as a matrix structure that defines a lattice structure.
Dependencies are inferred from the claim text.