Repair of airfoil edges

Details Repair of airfoil edges Repair of airfoil edges

1991-03-04

1993-03-30

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Impeller making

2940219, B21D 100, B21D 316, B23P 600

Patent

active

051971917

ABSTRACT:
The present invention provides a method and apparatus to repair gouged out and damaged leading and trailing edges of gas turbine engine blades, particularly fan blades, by cutting away a curved section including the damaged area and forming a blend radius along the repaired edge. The apparatus includes a unique machine tool guide having an adjustable cutting depth guide and mountable to a hand held machine tool driver, such as 90 degree angle head air motor, that drives a rotary cutter.

REFERENCES:
patent: 3487530 (1970-01-01), Ely
patent: 4128929 (1978-12-01), DeMusis
patent: 4161056 (1979-07-01), Dunham
patent: 4550497 (1985-11-01), Sharon
patent: 4589175 (1986-05-01), Arrigoni
patent: 4608756 (1986-09-01), Sharon
patent: 4639991 (1987-02-01), Sharon
patent: 4842663 (1989-06-01), Kramer
patent: 4873751 (1989-10-01), Walker et al.
patent: 5023987 (1991-06-01), Wuepper et al.
patent: 5031313 (1991-07-01), Blair et al.

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