Method of forming a self-flanging nut joint

Details Method of forming a self-flanging nut joint Method of forming a self-flanging nut joint

1974-03-13

1976-02-17

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

2924352, 29523, 151 4172, B21D 3900, B23P 1100

Patent

active

039382397

ABSTRACT:
A method and apparatus for forming a self-flanging nut construction utilizing a tubular body having a laterally extending flange at one end and an opening therethrough, said opening having a first portion and a second portion of differing cross sectional areas, the first portion being formed with a thread and the second portion defining a riveting flange. A plurality of circumferentially spaced serrations are provided on the periphery of said body adjacent said flange. When the nut is placed adjacent a sheet metal body having an opening therein with the opening in alignment with the opening in the nut and the nut is forced against said plate, the metal surrounding said opening in said plate is first deformed axially of the opening to form a tubular portion and thereafter the riveting flange is deformed laterally outwardly over the end of the tubular portion formed on said plate.

REFERENCES:
patent: 2026757 (1936-01-01), Swanstrom
patent: 2325929 (1943-08-01), Amesbury et al.
patent: 3381362 (1968-05-01), Church et al.
patent: 3800401 (1974-04-01), Jesenick

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