Method and apparatus for making blind rivets

Details Method and apparatus for making blind rivets Method and apparatus for making blind rivets

1980-07-14

1982-06-22

Combs, Ervin M.

10 27R, 29517, 29788, 29796, B21K 160, B23P 1100, B21D 3900

Patent

active

043354793

ABSTRACT:
In the manufacture of a blind rivet, a threaded mandril is positioned endwise in a flanged, cylindrical, rivet body. The mandril-containing body is then advanced into a work station between a pair of spaced-apart, C-shaped die sections. The die sections are specially shaped so that when they are forcibly brought together with the rivet body between them, they first almost fully encircle and capture the body without physically appreciably deforming it. Then as the die sections bottom against one another, they coin the rivet body thereby staking the mandril in the body while simultaneously forming a pair of precisely sized, diametrically opposite ribs in the rivet body that extend part way along the length of the body intermediate its ends.

REFERENCES:
patent: 3426375 (1969-02-01), Jeal
patent: 3438301 (1969-04-01), Mattioli
patent: 3463046 (1969-08-01), Welch et al.
patent: 3786527 (1974-01-01), Morton et al.
patent: 3956918 (1976-05-01), Rao
patent: 4067224 (1978-01-01), Birks
patent: 4149287 (1979-04-01), Skierski

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