Method of connecting thin plates

Details Method of connecting thin plates Method of connecting thin plates

1986-09-15

1988-08-02

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29521, 2924352, 295221, 403282, 403285, B21D 3900, B23P 1100

Patent

active

047606347

ABSTRACT:
A method and apparatus for performing the method, for connecting stacked thin plates 4, 5 (in particular sheet-metal plates) or plate sections, according to which stacked flat parts 10, 11 of both plates are first deep drawn together with one another, after which the bottom area of the deep-drawn flat parts is swaged wider, and wherein the radial expansion of the bottom area of these deep-drawn flat parts is limited, as a result of which a plastic deformation of the material of the plate takes place, particularly in the peripheral area, so that a connection point is created. By means of a crimp 17 present in the peripheral area of the bottom 16 of the blind opening 3 of the die 2, the swaged material flows into itself at the point that is to be connected, and hence the clinching strength, is improved.

REFERENCES:
patent: 2992857 (1961-07-01), Lemmerz
patent: 3198155 (1965-08-01), Fraze
patent: 3359935 (1967-12-01), Rosebottom
patent: 3579809 (1971-05-01), Wolf
patent: 3771216 (1973-11-01), Johnson
patent: 3993428 (1976-11-01), Gumm et al.
patent: 4459735 (1984-07-01), Sawdon
patent: 4614017 (1986-09-01), Eckold et al.

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