Process for installing fatigue-rated rivets

Details Process for installing fatigue-rated rivets Process for installing fatigue-rated rivets

1975-06-30

1976-04-27

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

2924353, 85 37, 52758D, B21D 3900, B23P 1102

Patent

active

039524019

ABSTRACT:
A process of forming an interference fit between a rivet and the perimeter of an aperture through which the rivet shank is inserted finds particular application in the aircraft industry where sheets of component materials are joined together as a sheet assembly by a plurality of rivets. The process utilizes a high energy impact gun which forms a button on one end of a rivet shank, the other end of the rivet shank protruding a predetermined distance from a sheet surface and prevented from longitudinal movement by a bucking bar. The impact gun is then activated against the other end to rapidly form a second button. The rivet shank is radially expanded during the riveting process to thereby swell against the perimeter of the rivet hole for compression stressing which serves to stress relieve the area adjacent to the hole during cyclic loading of a sheet assembly.

REFERENCES:
patent: 2042716 (1936-06-01), Johnson
patent: 2365147 (1944-12-01), Speller
patent: 2957237 (1960-10-01), Regle et al.
patent: 3561102 (1971-02-01), Diemer
patent: 3562893 (1971-02-01), Winslow et al.
patent: 3747382 (1973-07-01), McMaster et al.

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