Method for manufacturing an arm in composite material comprising a transversal bearing designed to receive a fixed or rotating shaft

摘要

The invention relates to a method for manufacturing an arm (16) in composite material, this arm comprising a main body incorporating a bearing (22) designed to receive a shaft passing through it transversely, this method comprising the steps of:
manufacturing a hub (11) by winding reinforcing fibers around a generally tubular support (12);manufacturing at least one sleeve (14);attaching the hub (11) to one end of the sleeve (14) and transversely to the sleeve (14) in order to form a mandrel;applying one or more layers of braided reinforcing fibers (21) around this mandrel with a machine for braiding reinforcing fibers (19);injecting and polymerizing resin into the layer or layers of braided fibers (21).;The invention applies notably to an arm forming an undercarriage rocker arm of an aircraft.

主权项

1. A method for manufacturing an arm (16) in composite material comprising at least one bearing (22) designed to receive a fixed or rotating shaft passing through the arm (16) transversely, this method comprising the steps of:
manufacturing at least one hub (11) by winding reinforcing fibers around a generally tubular support (12); manufacturing at least one sleeve (14); manufacturing a mandrel (15) by attaching each hub (11) to at least one sleeve end so that each hub (11) extends transversely to each sleeve (14); applying one or more braided reinforcing fibers (21) around this mandrel (15) and over its whole length with a machine (17) for braiding reinforcing fibers (19); covering ends of the tubular support when applying a layer or layers of braided reinforcing fibers; injecting and polymerizing resin into a layer or a plurality of layers of braided fibers (21) and optionally into the wound fiber or fibers of the hub (11) in order to establish a cohesion rigidly binding at least the layer or the plurality of layers of braided fibers (21) with the hub (11) that they surround; removing the portions of the layer or layers of braided reinforcing fibers which cover each end of the tubular support in order to expose the ends of the tubular support; and machining the layer or the plurality of layers of braided reinforcing fibers (21) at each end of the generally tubular support (12) in order to clear each end of this support (12).