Process of forming a joint with a predetermined clamp-up load

Details Process of forming a joint with a predetermined clamp-up load Process of forming a joint with a predetermined clamp-up load

1980-11-10

1983-05-17

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29526R, 29240, 403284, 81121R, B21D 3900, B23P 1100

Patent

active

043833535

ABSTRACT:
A collar threads onto a shear pin. When the collar engages a surface of a workpiece, resistance to further threading increases. When sufficient resistance to threading occurs, a setting driver upsets lobes of the collar and forces these lobes radially inward toward the axis of the collar. Material of the collar inside the lobes responds to deformation of the lobes and flows radially inward against the shear pin to lock the collar, shear pin and workpiece together. The driver then rotates freely and a joint has been made with a predetermined clamp-up load and its component parts locked together.

REFERENCES:
patent: 930450 (1909-08-01), Zinow
patent: 2596885 (1952-05-01), Booth
patent: 2897867 (1959-08-01), Torre
patent: 2923339 (1960-02-01), Skidmore
patent: 3464306 (1969-09-01), Reynolds
patent: 3603132 (1971-09-01), Holmes
patent: 3763725 (1973-10-01), Reiland
patent: 3920338 (1975-11-01), Dahl
patent: 4005740 (1977-02-01), Villo et al.
patent: 4061367 (1977-12-01), Moebius

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