Process for joining a hollow shaft and elements slid thereon

Details Process for joining a hollow shaft and elements slid thereon Process for joining a hollow shaft and elements slid thereon

1993-01-22

1994-02-22

Vo, Peter Dungba

Metal working

Method of mechanical manufacture

Assembling or joining

2988808, 298881, B23P 1904, B21D 3900

Patent

active

052876152

ABSTRACT:
The invention relates to a process for producing a connection between a hollow shaft and design elements slid on to the shaft and having an aperture which corresponds to the outer diameter of the hollow shaft, especially for producing assembled camshafts, crankshafts or transmission shafts by hydraulically expanding the hollow shaft, a process which results in plastic deformation and permanent elastic pretension in the surface layer of the aperture of the slid-on design elements and in the case of which the compressive force in the connected region between the hollow shaft and the aperture is very much higher during the hydraulic expansion process than the remaining compressive force after completion of the expansion process. As a result, there occurs a material-locking connection between the material of the surface layer of the aperture of the design element and the material of the plastically deformed hollow shaft.

REFERENCES:
patent: 2866212 (1958-12-01), White et al.
patent: 2892254 (1959-06-01), Garvin
patent: 3134202 (1964-05-01), Hoefler
patent: 3887776 (1975-06-01), Karbayashi
patent: 4132607 (1979-01-01), Painter et al.
patent: 4448343 (1984-05-01), Kochka et al.
patent: 4612695 (1986-09-01), Umeha et al.
patent: 4660269 (1987-04-01), Suzuki
patent: 4763503 (1988-08-01), Hughes et al.

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