US 11,597,015 B2Granted

Method of manufacturing a planet carrier of a gearbox

AssigneeROLLS-ROYCE plc

InventorsDaniel Clark, Andrew R Ramshaw

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Abstract

A method of manufacturing a planet carrier of a gearbox comprises manufacturing a plurality of preforms. Each preform comprises a base portion, a first end portion connected to a first end of the base portion, a second end portion connected to a second end of the base portion, a first side portion connected to a first side of the base portion, a second side portion connected to a second side of the base portion and a top portion. The first and second end portions and the first and second side portions are folded relative to the base portion and the top portion is folded and the adjacent edges of the portions of each preform are secured together to form a support structure. A first ring and a second ring are manufactured. The first and second end portions of each support structure are secured to the first and second rings respectively.

Claims20

Dependent claims

A method of manufacturing a planet carrier of a gearbox, the method comprising the steps of:

a) manufacturing a plurality of preforms, each preform comprising a base portion, a first end portion located at and connected to a first end of the base portion, a second end portion located at and connected to a second end of the base portion, a first side portion located at and connected to a first side of the base portion, a second side portion located at and connected to a second side of the base portion and a top portion,
b) folding the first end portion, the second end portion, the first side portion, the second side portion relative to the base portion and folding the top portion and securing the adjacent edges of the first end portion, the second end portion, the first side portion, the second side portion and the top portion of each preform together to form a box support structure,
c) manufacturing a first ring and a second ring, and
d) for each box support structure, securing the first end portion to the first ring and securing the second end portion to the second ring,
wherein the box support structure is a separate piece of structure from the first ring and the second ring.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/695,727Filed 26 Nov 2019
Priority: GB 18197684 Dec 2018
Published: US 2020/0171577 A14 Jun 2020
Granted: 7 Mar 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

F16H 57/0479
Elements of gearings to be lubricated, cooled or heated: gears or bearings on planet carriers
B22F 5/009
Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product: of turbine components other than…
B22F 7/062
Of composite workpieces or articles from parts, e.g. to form tipped tools: involving the connection or repairing of preformed parts
B22F 10/28
Direct sintering or melting: powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]