公开(公告)号：US20190308264A1

公开(公告)日：2019-10-10

申请号：US16352070

申请日：2019-03-13

Applicant: ROLLS-ROYCE plc

Inventor： Daniel CLARK ,  Alan A. PARDOE

IPC: B23F7/00

Abstract: A method of manufacture comprising: controlling provision of a first mould part including an inner surface defining a first cavity, the inner surface of the first mould part comprising a plurality of first grooves; controlling provision of a second mould part including an inner surface defining a second cavity, the inner surface of the second mould part comprising a plurality of second grooves; controlling coupling of the first mould part and the second mould part, the first cavity and the second cavity forming a third cavity, the plurality of first grooves and the plurality of second grooves forming a double helical pattern; controlling provision of a powder to the third cavity; and controlling cold isostatic pressing of the powder within the third cavity to form a double helical gear.