Assembled crankshaft and method for producing an assembled crankshaft

A method for producing an assembled crankshaft for an internal combustion engine, the method comprising:

• providing crank webs with receiver openings and (ii) crank pins with fixing portions at their ends, the crank webs and crank pins are provided as joint partners wherein the crank webs are provided with receiver openings which taper in the longitudinal section at least in portions in a parabolic shape, starting from an insert side facing the assigned crank pin in the direction of an opposite side;
• providing one of the receiver openings or the fixing portions with a toothing running in a longitudinal direction (x) of the crankshaft, wherein the cross section of the fixing portions extends in regions through the toothing beyond an inner cross section of an assigned receiver opening;
• and
• connecting the joint partners wherein a material displacement and contour deformation occurs at one of the receiver openings of the crank webs or at the fixing portions of the crank pins, and the joint partners are thus connected by form fit.

An assembled crankshaft for an internal combustion engine comprising:

• a crank web having receiver openings;
• crank pins having end fixing portions that are connected together to the crank webs by form- and force-fit without further fixing means;
• and
• wherein the crank web and crank pins are pressed together as joint partners and have a different hardness, wherein the harder joint partner has a pre-produced toothing, wherein the material of the softer joint partner is displaced and deformed in regions by the toothing, and wherein a contact face between the joint partners runs parabolically at least along tooth tips of the toothing.