Method and apparatus for joining plates by stamping pressing and

Details Method and apparatus for joining plates by stamping pressing and Method and apparatus for joining plates by stamping pressing and

1986-09-15

1988-08-02

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29 211, 292435, 29509, 29521, 29809, B23P 1100

Patent

active

047606320

ABSTRACT:
A method for joining stacked thin plates (metal sheets in particular) or plate sections by stamping dies, and an apparatus for performing the method, in which stacked plate portions are severed by stamping them along a longitudinal portion of their peripheries and pressed them out of the plane of the plate, and in which subsequently, by means of a counterpressure die element, the plate portion nearer the plates is enlarged on the cut sides by swaging, yet without the plate portion remote from the plates being enlarged. Further, during the stamping and pressing operation the counterpressure die element, or the swaging die, remains stationary inside the bottom die 2, but subsequently, during the coining operation that generates higher pressing forces, the yields counter to an elastic supporting force, whereupon the flowing material of the plate piece nearer the plates forms flange portions which grip the plate associated with it from behind.

REFERENCES:
patent: 2671361 (1954-03-01), Sandberg
patent: 2811880 (1957-11-01), Williams
patent: 3599318 (1971-08-01), Behlen
patent: 3919955 (1975-11-01), Du Vernay
patent: 4208776 (1980-06-01), Schleicher
patent: 4312122 (1982-01-01), Gunter
patent: 4403409 (1983-09-01), Richards

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