Multi-part, joined rotors in hydraulic camshaft adjusters, having joint-sealing profiles, and method for producing the rotors

A method to produce a camshaft adjusting device for an internal combustion engine with a stator wheel and a rotor wheel functioning together with the stator wheel, wherein the stator wheel is driven so as to rotate around an axis of rotation and wherein the rotor wheel can be connected to a camshaft of the internal combustion engine, wherein the stator wheel has stator vanes arranged so as to point radially inward, between which rotor blades extend and the rotor blades are arranged on the rotor wheel pointing radially outward, such that fluid chambers are formed between the stator vanes and the rotor blades, which can be exposed to pressurized fluid through fluid ducts, and wherein the rotor wheel is provided by a first body part with a first joining surface and by a second body part with a second joining surface, wherein depressions are placed in at least one of the joining surfaces, in order to form the fluid ducts, at least in sections, wherein the method comprises at least the following steps:

• Provision of at least one sealing means in or on at least one joining surface with the sealing means being designed such that the fluid ducts are sealed off and that defined contact is obtained between the joining surfaces, which are placed on top of one another wherein the sealing means is in the form of a peripheral sealing structure having elevations in a first body part on a first face side and having opposite notches in an opposite second body part on a second face side opposite to the first face side and wherein the elevations and the notches are arranged on the side faces peripheral to the depressions, either to directly border the depressions in their contour or at a distance to the contour of the depressions surrounding the depressions on the face sides as the joining surfaces and
• Joining of the body parts by placing the joining surfaces on top of one another such that the elevations and the notches function together to form a seal after the body parts are joined.