Mécanisme à oscillations


Oscillating mechanism


A mechanism suitable for friction welding aerofoil blades to the periphery of a disc. The mechanism comprises a first member (flywheel 12) which has an eccentric crank pin. Two pivotally interconnected links 18 and 20 are connected between the crank pin and a second member 19 which is pivotally mounted. A blade to be friction welded (by rubbing it in an arcuate path on the disc) is mounted at the point of pivotal connection 32 between the second link 20 and the member 19. An actuator lever 24 is pivotally mounted on a pivot 22 which is located in the vicinity of the locus of movement of the pivotal interconnection 30 between the two links 18, 20. The actuator has a third link 28 which is of the same length as the link 20. The third link is connected by a pivot 26 to the lever 24 at a radius equal to the length of the second and third links 20 and 28. Movement of the lever 24 about its pivot 22 when the pivots 30 and 22 coincide, to bring the pivot 26 into line with the pivot 32 freezes the oscillation of the pivot 32 to enable the blade to be welded to the disc at a precise location along the arcuate path.




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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    DE-596469-CMay 02, 1934Siemens AgEinrichtung zur elektrischen Lichtbogenschweissung

NO-Patent Citations (0)


Cited By (23)

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    EP-0397387-A2November 14, 1990ROLLS-ROYCE plcFriction welding
    EP-0397387-A3February 27, 1991ROLLS-ROYCE plcReibschweissen
    EP-0404531-A1December 27, 1990ROLLS-ROYCE plc, Mtu Motoren- Und Turbinen-Union München GmbhFriction bonding apparatus
    EP-0458630-A1November 27, 1991ROLLS-ROYCE plcSoudage à friction
    EP-0513669-A2November 19, 1992Mtu Motoren- Und Turbinen-Union München GmbhReibschweissverfahren zur Beschaufelung eines Schaufelträgers für Strömungsmaschinen
    EP-0513669-A3January 20, 1993Mtu Muenchen GmbhFriction welding method for fixing blades on a turbine wheel of a fluid machine
    EP-0624420-A2November 17, 1994ROLLS-ROYCE plcSoudage par friction
    EP-0624420-A3July 26, 1995Rolls Royce PlcSoudage par friction.
    EP-1323490-A2July 02, 2003United Technologies CorporationApparatus and method for friction welding
    EP-1323490-A3November 03, 2004United Technologies CorporationVerfahren und Vorrichtung zum Reibschweissen
    GB-2279597-AJanuary 11, 1995Rolls Royce PlcImprovements relating to friction welding
    GB-2279597-BMay 15, 1996Rolls Royce PlcImprovements relating to friction welding
    US-4905883-AMarch 06, 1990Allwood, Searle & Timney (Holdings) LimitedFriction welding apparatus
    US-4995544-AFebruary 26, 1991Allwood, Searle & Timney (Holdings) LimitedFriction welding apparatus
    US-5035411-AJuly 30, 1991Rolls-Royce Plc, Mtu Motoren-Und Turbinen-Union Munchen GmbhFriction bonding apparatus
    US-5148957-ASeptember 22, 1992Allwood, Searle & Timney (Holdings) LimitedFriction welding
    US-5188275-AFebruary 23, 1993Rolls-Royce PlcFriction bonding clamp for a rotor blade
    US-5518562-AMay 21, 1996Rolls-Royce PlcFriction welding
    US-8002162-B2August 23, 2011Mtu Aero Engines GmbhFriction-welding device
    US-RE35664-ENovember 18, 1997Rolls-Royce PlcFriction welding
    WO-2004058443-A1July 15, 2004Mtu Aero Engines GmbhFriction welding device
    WO-9013388-A2November 15, 1990Allwood, Searle & Timney (Holdings) LimitedSoudage par friction
    WO-9013388-A3December 13, 1990Allwood Searle & TimneySoudage par friction