ASSEMBLED ROTATABLE SHAFT ARRANGEMENT

摘要

An assembled rotatable shaft arrangement (110) (figure 2), particularly a camshaft comprising a plurality of cam lobes (111i) located on, and by, an expanded tubular shaft (112), is made by defining shaft apertures (121i) in the cam lobes which are larger than the shaft to be used and providing on a side face of each cam lobe location feature(s) (130) to locate each cam spatially with respect to the others and a datum (114<1>), by virtue of their relationship with positioning members (255i, figure 3(b)) of assembly apparatus (150), such that the shaft apertures of the array of lobes define a common through passage (135) which may be smaller than individual shaft apertures but larger than the shaft. The shaft, after threading through the apertures, is expanded radially to conform to the lobe shaft apertures, not vice versa.