公开(公告)号：US20210229199A1

公开(公告)日：2021-07-29

申请号：US17055030

申请日：2019-10-17

申请人： LEONARDO S.P.A.

发明人： Dario Colombo ,  Roberto Regonini ,  Sergio Fiorio

IPC分类号： B23G1/16 ,  B23P6/00 ,  B64F5/40 ,  B23B49/02

摘要： It is described a method for reconditioning a damaged thread of a transmission of a hover-capable aircraft; the damaged thread being arranged inside a first hole of the transmission; wherein the method includes the following steps: i) centering a tool on the first hole; ii) inserting a first tool inside the tool centred on the first hole and removing the damaged thread through the first tool; iii) inserting a second tool inside the tool and creating a new thread inside the first hole having a diameter larger than the one of the damaged thread; iv) screwing an insert having a thread inside the new thread, so that the insert engages the first hole and defines a reconditioned thread; and v) keeping the transmission mounted on the hover-capable aircraft during steps i), ii), iii), iv).