Process for the manufacture of a two-part operating piston for a

Details Process for the manufacture of a two-part operating piston for a Process for the manufacture of a two-part operating piston for a

1991-01-24

1992-08-11

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29509, 29515, B21D 3900, B23P 1100

Patent

active

051367726

ABSTRACT:
A process of permanently joining a cylindrical core (2) to a metallic beaker-shaped part (1) which together form an operating piston of a hydraulically operated disc brake includes inserting the core into a bore in the beaker-shaped part, and providing an axially protruding end on the core beyond the annular end surface (7) of the beaker-shaped part having a conical surface (8) extending from its free surface (6) into the front area of the beaker-shaped part (1). A wedge-shaped annular groove (11) is produced in the beaker-shaped part (1), whereby material is radially displaced inwardly so that it abuts against the conical surface (8) of the core to retain the core in the beaker-shaped part.

REFERENCES:
patent: 2537723 (1951-01-01), Ward
patent: 2840113 (1958-06-01), Simpson et al.
patent: 3007603 (1961-11-01), Krehl
patent: 3090114 (1963-05-01), Sinclair
patent: 3253330 (1966-05-01), Davies
patent: 4722619 (1988-02-01), Reiser et al.
patent: 4848448 (1989-07-01), Kaarre

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