FRICTION WELDING APPARATUS HAVING MEANS FOR CONTINUOUSLY REGULATING HEAT GENERATED DURING WELDING OPERATION

Friction welding apparatus for frictionally welding together two workpieces comprises a driving spindle for rotationally driving one workpiece and a driven spindle slidable towards the driving spindle for moving the other workpiece into frictional engagement with the rotating workpiece which in turn...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAGI N,JA, KUROYANAGI R,JA
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Friction welding apparatus for frictionally welding together two workpieces comprises a driving spindle for rotationally driving one workpiece and a driven spindle slidable towards the driving spindle for moving the other workpiece into frictional engagement with the rotating workpiece which in turn rotationally drives both the other workpiece and the driven spindle. Means are provided for continuously regulating the amount of rotational resistance offered by the driven workpiece to accordingly control the quantity of heat generated during the frictional welding operation and such comprises a rotary pump rotationally driven by the driven spindle to pressurize hydraulic liquid in an hydraulic circuit and as the pump works against the hydraulic liquid to pressurize same, the pump exerts a countertorque on the driven spindle opposing rotation of the driven spindle. An adjustably settable relief valve is connected in the hydraulic circuit and the setting on the relief valve determines the magnitude of the countertorque and therefore the degree of resistance to rotation offered by the driven workpiece.