Die assembly and method for clinching fasteners to panels

Details Die assembly and method for clinching fasteners to panels Die assembly and method for clinching fasteners to panels

1976-09-01

1977-12-27

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Assembling or joining

292835, 29432, 29798, 72357, B23P 1100

Patent

active

040646173

ABSTRACT:
A die assembly for clinching a fastener such as a pierce nut to a panel. In the clinching operation, a pilot portion of the fastener is driven through the panel and into an aperture in a die body. Step portions of the die body deform the fastener pilot and interlock or clinch the fastener and panel together. After the clinching operation, the fastener and panel are stripped from the die assembly. In order to facilitate release of the fastener pilot from the die aperture, the die body is segmented so that its segments can separate in a radial direction to enlarge the aperture. The die body segments have sloping outer surfaces received in a complementary die holder so that the segments are cammed together during the clinching operation and are separable during the stripping operation.

REFERENCES:
patent: 2652942 (1953-09-01), Muchy
patent: 2749606 (1956-06-01), Donahue
patent: 2750660 (1956-06-01), Newcomb
patent: 3337946 (1967-08-01), Anderson et al.
patent: 3877133 (1975-04-01), Grube
patent: 3921276 (1975-11-01), Oaks

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