A process for the preparation of a hollow shaft, in particular a rocker arm bearing axis, as well as the hollow shaft, in particular rocker arm bearing axis

摘要

A process for the preparation of a hollow shaft (1), in particular a rocker arm bearing axis, in which, in a hollow cylindrical casing part (2) a configured as a molding core (3) is introduced, wherein in the core (3) previously longitudinal channels (4, 8) are arranged and / or on the outer surface of the core (3) previously recesses (6) are introduced, so that by means of the recesses (6) between the outer surface of the core (3) and the inner surface of the sleeve element (2) longitudinal channels (4, 8) are cut out, the core (3) with respect to the jacket part (2) - of rotation and is secured axially, the outer casing of the core (3) in the axial direction of the sleeve element (2) with respect to the jacket part (2) is sealed off at least in some areas, as a result of which the between the core (3) and the casing part (2) axially extending longitudinal channels (4, 8) in the axial direction of the sleeve element (2) are sealed relative to each other, the longitudinal channels (4, 8) at least in part to the formation of sack hole channels in its axial course be sealed and the longitudinally - and / or sack hole channels (4, 8) with transversely with respect to the axial axis..