Method of joining a sheet metal part to a metal tube

Details Method of joining a sheet metal part to a metal tube Method of joining a sheet metal part to a metal tube

2005-01-04

2005-01-04

Bryant, David P. (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S432200, C029S509000, C029S524100, C029S525060, C029S525140, C029S798000, C029S243530, C219S157000, C411S179000, C411S181000, C411S501000

Reexamination Certificate

active

06836948

ABSTRACT:
The present invention provides a method of joining a sheet metal part to a metal tube to form an assembly. In an overlapping configuration, the parts are held together under a clamping force while a self-piercing rivet is driven through the assembly by a welding electrode. The rivet pierces and passes through the sheet metal part and then through at least substantial portion of the metal tube to thereby form a mechanical interlock. An electrical current is then applied to this mechanical retention to melt a portion of the rivet as well as a portion of the metal surrounding the joining region. The flow of electrical current is then stopped after several welding cycles where the now melted material is allowed to solidify upon cooling, thereby forming a weld.

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patent: 11033664 (1999-02-01), None
patent: WO 9801679 (1998-01-01), None

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