Method for forming a projection for projection welding

Details Method for forming a projection for projection welding Method for forming a projection for projection welding

1997-06-19

1999-02-16

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

72356, 2191171, B23K 1114

Patent

active

058723480

ABSTRACT:
A method for forming a projection for projection welding includes the steps of: bending a workpiece such that a first end side portion located on one side of the bent portion is perpendicular to a second portion that is located on the opposite side of the bent portion, and pressing the workpiece between a punch and a V-shaped groove of a die. The pressing of the workpiece causes the first portion to the further bent toward the second portion until the inboard surface of the first portion is brought into contact with the second portion. During the pressing step, the outboard surface of the first portion is brought into contact with one surface of the groove while an end surface of the first portion is brought into contact with a second surface of the groove, with the thicknesses of the first portion and the second portion of the workpiece being plastically changed.

REFERENCES:
patent: 1925753 (1933-09-01), Fitch et al.
patent: 4495397 (1985-01-01), Opprecht et al.
patent: 4677271 (1987-06-01), Opprecht

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