ASSEMBLED MULTI-LAYER SHAFTS

摘要

A hollow shaft (1) with external functional elements is assembled by radial expansion in given areas in the axial direction. The inner shaft tube (3) in the sections to be expanded is thus plastically deformed, and the external parts in the sections to be expanded are only deformed resiliently. The functional elements are disposed at least partially on multiple functional elements, the sections to be expanded lying between the functional elements. The invention further concerns a process for producing hollow shafts constructed in this way and a process for producing multiple functional elements, in particular multiple cams. These multiple functional elements are used to produce assembled hollow shafts. The individual functional elements are produced from tubes with profiles corresponding to the functional elements, and are joined to form multiple cams. In the axial direction the non-circular functional elements comprise annular projections which are concentric to the base circle and whose internal diameter is slightly larger than the outer diameter of the shaft tube.