Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1988-07-12
1990-05-15
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Assembling or joining
295221, 29523, 403230, 403240, 403242, 403277, B21D 3900
Patent
active
049245848
ABSTRACT:
A method of fastening, at least one tubular element at, at least one portion thereof to an at least one member of predetermined thickness, the method comprising establishing at least one opening through the at least one member, the at least one opening extending through the thickness of the at least one member, providing recesses within the at least one member, the recesses of predetermined configuration and being disposed about the perimeter of the at least one opening through the at least one member, the recesses extending radially away from the at least one opening and across at least a portion of the thickness of the at least one member, inserting the at least one tubular element within the at least one opening; holding the at least one tubular element and the at least one member within a jig; establishing recesses within the jig proximate each abutting edge of each of the tubular elements and the at least one opening through the at least one member; applying a predetermined force upon the ends of the at least one tubular element, the force being of a substantial predetermined magnitude to cause the wall portion of the at least one tubular element proximate the at least one opening and proximate the recesses established within the jig, to bead radially away from the at least one tubular element and further cause radial portions of each bead proximate the at least one opening to flow into the recesses formed within the at least one opening about the perimeter of the at least one opening; such beading providing fastening engagement between the at least one tubular eleent and the at least one member wherein no further fastening is required.
REFERENCES:
patent: 4781076 (1988-11-01), Hartnett et al.
Eley Timothy V.
Hughes Ivor M.
Magna International Inc.
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