Method for the production of a camshaft, apparatus for carrying out the method and a camshaft, in particular for internal combustion engines

摘要

The invention relates to a method for the production of a camshaft, in particular a camshaft for an internal combustion engine, with a rotationally symmetrical hollow shaft, with a plurality of bearing portions and with cams secured on the hollow shaft, which cams are formed by correspondingly deformed tube portions, the inner contour of which surrounds the hollow shaft over more than 180 DEG . For simpler positioning of the cams on the hollow shaft, the cams are produced with an overlap in relation to the hollow shaft and are expanded thermally onto the hollow shaft upon assembly. A device for expanding the cams is formed by one or more pairs of clamping jaws between which the cams are positioned. To increase the clamping effect and achieve a high-strength soldered joint between the cams and the hollow shaft, the cams are provided with serrations on their inner circumferential surfaces.