Patent ID: 6347451
Filing Date: 2002-02-19
Classification: B21D,F01L,Y10T

Abstract:
A process for manufacturing a built-up camshaft, the process comprising the acts of:sliding at least one cam having two end faces onto a hollow shaft; inserting a fluid pressure delivering probe into the hollow shaft; sealing-off the hollow shaft via a sealing arrangement at a location between the two end faces of the cam and a respective bearing point on the hollow shaft; exteriorly supporting the hollow shaft at the location of the sealing-off such that the hollow shaft is substantially prevented from lifting off from the sealing arrangement; and expanding the hollow shaft at a location between the two end faces of the cam and at the respective bearing point via high pressurized fluid from the probe, such that a press fit occurs between the cam and the hollow shaft and a bulging occurs at the bearing point of the hollow shaft, said bulging being dimensioned to bridge a distance between the hollow shaft and an abutment.