Slug riveting method and apparatus

Details Slug riveting method and apparatus Slug riveting method and apparatus

1988-06-03

1990-03-20

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29509, 2924354, 295252, 408 25, B23P 1904, B27C 306

Patent

active

049089285

ABSTRACT:
A method and apparatus for riveting two workpieces (10, 12) together by simultaneously upsetting both ends of a slug rivet (R) while maintaining the outer surface (16) of one of the workpieces (10) in a substantially constant fixed work plane (20) during riveting. The workpieces are held between two clamps (18, 28), one of the clamps (18) establishing the fixed work plane. After drilling, a slug rivet is placed within the drilled hole, and then a first riveting ram (42) is moved to establish a desired die cavity. A second riveting ram (58) is then moved until it just contacts the rivet. The rams (42, 58) are then simultaneously moved towards each other at equal rates to simultaneously form upset heads on both ends of the rivet.

REFERENCES:
patent: 3557442 (1971-01-01), Speller
patent: 3874070 (1975-04-01), Falcionni
patent: 4192058 (1980-03-01), Falcioni
patent: 4493141 (1985-01-01), Krezak
patent: 4515302 (1985-05-01), Davern et al.
Tom D. Stone, No Tack Assembling of Wing Skin and Spar Assemblies, SME Technical Paper #AD86-686, 1986, Society of Manufacturing Engineers.

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