Patent ID: 6433307
Filing Date: 2002-08-13
Classification: B23K

Abstract:
A device for welding cylinder-shaped and rotatable elements together comprising:an electrode shaft which conveys the welding current to the welding electrode, a positioning and fastening cassette for the elements to be welded together, a pipe shaft surrounding the electrode shaft, which is rotatably seated with respect to the electrode shaft, a connecting head fastened on said pipe shaft, which is provided with gripper elements for an interchangeable protective chamber, said positioning and fastening cassette being arranged in connection with the protective chamber in such a way that it is fastened at a connecting head by means of the same gripper elements as the protective chamber, means for rotating the pipe shaft together with the connecting head and the protective chamber, means for arresting the electrode shaft, so that it cannot be rotated while the pipe shaft is rotated, and means for axially moving the electrode shaft with respect to the pipe shaft.