Stud-welding apparatus

Details Stud-welding apparatus Stud-welding apparatus

1994-07-08

1995-06-20

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

B23K 920

Patent

active

054262763

ABSTRACT:
An apparatus for welding a stud to a substrate has a housing, a rear tubular element fixed in the housing and defining a rear passage portion, and a front tubular element in the housing defining a front passage portion itself defining an axis and forming with the rear passage portion a continuous passage. The front tubular element has a front end and is limitedly axially displaceable in the housing between a front position and a rear position. A spring braced between the front tubular element and the housing urges the front element axially forward relative to the housing into the front position. A chuck or holder at the front end is adapted to hold the stud. A sleeve fixed to the housing has a front edge lying axially rearward of the front end in the front position of the front element and axially forward of the front element in the rear position so that when the stud in the holder is pressed axially forward against the substrate the stud and front element move axially backward in the housing. An electrical current is passed between the stud in the holder and the substrate when the stud is engaged against the substrate for welding the stud to the substrate.

REFERENCES:
patent: 2935595 (1960-05-01), Bullis et al.
patent: 4629857 (1986-12-01), Gauger
patent: 4969582 (1990-11-01), Gauger

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