Stud welding appartus

Details Stud welding appartus Stud welding appartus

1996-04-10

1997-11-18

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

B23K 920

Patent

active

056884141

ABSTRACT:
A welding apparatus comprising a hollowed tubular stud-receiving portion including an axially extending slit at the end thereof and a reduced inner diameter portion at the inner side of the end thereof; and an adapter opened to communicate with the stud-receiving portion for feeding a flanged stud having a shank and a flange formed at an end of the shank into the stud-receiving portion with the flange at the leading end. A collet is positioned to be axially slidable in the stud-receiving portion and provided with a bore at the end thereof to receive the stud shank in the bore, and at least the end portion of the collet is made of an electrically conductive material. Collet driving means is provided for driving the above collet to move the same between a retracted position in which the collet end is placed rearward of the opening of the adapter and a projecting position in which the collet end projects from the end of the stud-receiving portion to apply urging force to the stud. Magnetic field establishing means establishes a stud pulling magnetic field around the retracted collet to draw the stud from the stud-receiving portion into the bore of the collet.

REFERENCES:
patent: 2110832 (1938-03-01), Hogg et al.
patent: 3321607 (1967-05-01), Facone et al.
patent: 3997754 (1976-12-01), Moliner et al.

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