System for manufacturing built-up camshafts

System for manufacturing a cam shaft built-up of a hollow shaft and at least one cam, the system comprising:

• a lance-shaped probed which can be slid into the hollow shaft which is situated in an end-side clamping-in device, the probe having a pressure fluid guiding duct fluidically connected with a fluid high pressure generating system and having outlet openings in an area of a bearing point of the hollow shaft, which area is to be expanded by high pressure fluid, as well as on a section of the hollow shaft between the two faces of the respective cam extending transversely to the longitudinal course of the shaft, said probe also having one sealing arrangement respectively for the hollow shaft on the section of the cam to be joined and in the area of the bearing point, the sealing arrangements having two sealing bodies which are arranged in a surrounding manner on the probe and are axially spaced with respect to one another, and which bound the areas of the hollow shaft, which are to be expanded, axially on both sides in a sealing manner with a support on the interior side of the hollow shaft, and wherein the sealing arrangement for the bearing point contains a supporting tool which, in an operative position, rests rigidly on the outside on the hollow shaft in a surrounding manner while leaving open the area of the hollow shaft to be expanded, and, in the process, covers the respective sealing body, and further having tools for aligning, positioning and holding the cam.