Patent · US Expired

System for manufacturing built-up camshafts

US6615468B2 · kind B2 · utility

6Cited by

8References

8Claims

0Family size

Assignee

Daimlerchrysler AG · US

Inventors

Henning Bloecker · Seevetal, DE
Klaus Brandes · Asendorf, DE
Martin Kruessmann · Stuttgart, DE

Key dates

Filing date	Jan 11, 2002
Grant date	Sep 9, 2003
Priority date	—
Expiry date	Jan 12, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/53996
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A process and system for manufacturing a built-up camshaft by which the operational safety of the camshaft is ensured in a simple manner in any engine operation and the camshaft can arbitrarily be adapted to abutments which have different positions because of the individual engine construction. At least one cam is pushed onto a hollow shaft, after which the hollow shaft is expanded between the two faces of the cam which extend transversely with respect to the longitudinal course of the hollow shaft and at the respective bearing point by means of a highly pressurized pressure fluid. This fluid is delivered by a lance-shaped probe introduced into the hollow space of the shaft. On the one hand, a press fit occurs between the cam and the hollow shaft and, on the other hand, a bulging of the bearing point of the hollow shaft occurs which bridges the distance between the hollow shaft and the abutment. The hollow shaft is sealed off between the expanded points by a sealing arrangement on the probe with respect to the expanding internal high pressure.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.