Gkss-forschungszentrum Geesthacht Gmbh

Ckss Forchungszentrum Geesthacht Gmbh

Christoph Schilling

Jorge Dos Santos

Jens Peter Wulfsberg

Henry Loitz

Alexander Von Strombeck

Jens Von Der Wense

An apparatus is proposed for connection of workpieces using the friction stir welding method, with a shaft (') which can be driven such that it rotates and at whose end remote from the drive end of the shaft a pin-like projection () is arranged, at whose end a first stop, which is formed by a first shoulder (), is arranged, with the first shoulder having a diameter which is larger than the diameter of the pin-like projection (), and with a second stop (&#x2032;), which is formed from a second shoulder and is arranged such that the workpieces () to be connected can be enclosed between the stops (&#x2032;), in that at least one of the stops can be moved translationally in order to enclose the workpieces () with a predetermined force in the direction of the other stop. The apparatus () is in this case designed such that the second shoulder () or the second stop is designed such that it can be rotated, and the first and the second shoulder () or the first and the second stop are designed such that they can be rotated in the opposite sense.

Apparatus for connection of workpieces using the friction stir welding method

In a method and apparatus for joining at least two adjoining workpieces by friction welding, a rotatable shaft is provided at its front end with a friction welding tool which is biased toward the workpieces to plasticize an area of the workpiece into which the tool enters while the plasticized material is displaced and stored in, or around, the tool. Upon passing through the top workpiece and entering the lowermost work piece, the tool is removed and the stored plasticized material is returned to the void provided by the tool upon removal thereof from the workpieces for joining the workpieces.

Method and device for joining at least two adjoining work pieces by friction welding

In a device for joining, by friction stir welding, at least two workpieces, a support structure is provided with a head portion which includes drive means and a shaft which is rotatable by the drive means and has a pin-like projection projecting toward a support member of the support structure for supporting workpieces to be joined by friction stir welding and wherein guide means are provided for moving the rotating pin-like projection into contact with, and into, the workpieces while plasticizing the workpieces in the contact area to form thereby a spot weld by friction stir welding.

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Munich, Georgia

Christoph Schilling