Rotor yoke and method of making the same

摘要

A method of making a composite rotor yoke includes preparing a molded rotor yoke in a closed cavity tool and possibly machining at least one portion of the molded rotor yoke to form the rotor yoke. In the preferred embodiment, preparing the molded rotor yoke is accomplished by applying layers of uncured low-flow composite material and a layer of uncured high-flow adhesive; substantially enclosing the uncured molded rotor yoke in the closed cavity tool; applying pressure so as to compress the uncured molded rotor yoke; and curing the uncured molded rotor yoke. During the curing process, the high-flow adhesive bleeds out of the molded rotor yoke, thereby preventing marcels from forming through movement of the low-flow composite material.

主权项

1. A method of making a rotor yoke, comprising:
preparing a molded rotor yoke in a closed cavity tool, comprising:
applying layers of uncured low-flow composite material, the low-flow composite material comprising fibers impregnated in uncured epoxy or adhesive, and a layer of uncured high-flow adhesive, the layer of high-flow adhesive lacking fibers impregnated therein, the layers being applied in a configuration to produce an uncured molded rotor yoke;substantially enclosing the uncured molded rotor yoke in the closed cavity tool, wherein the closed cavity tool comprises a first tool and a second tool;forcing the first tool and the second tool together, so as to compress the uncured molded rotor yoke; andcuring the uncured molded rotor yoke.