Articulated resistance welding electrode with universal movement

Details Articulated resistance welding electrode with universal movement Articulated resistance welding electrode with universal movement

1985-11-15

1986-11-18

Broome, Harold

Electric heating

Metal heating

For bonding with pressure

219 8631, 219 89, 219119, B23K 924, B23K 1130, H05B 303

Patent

active

046237755

ABSTRACT:
A resistance welding electrode for producing spot welds on a workpiece without marring comprises a hollow electrically conductive shank for conducting welding current and pressurized cooling fluid, an electrode head affixed to a rigid, electrically insulating, tubular housing having a flange with a groove and surrounding the free end of the shank, a spring engaging the shank and tubular housing to bias the head out of engagement with the free end of the shank and a ring of resilient, fluid sealing material retained in the groove to engage the shank and form a chamber with the tubular housing and head for cooling fluid from the shank. The ring allows rocking movement of the tubular housing and head relative to the shank so that the workpiece contact area may conform to the workpiece when welding pressure is applied to the shank. The ring further allows axial translation between the tubular housing and shank under welding pressure to permit contact between the head and shank for welding current flow therebetween and axial separation of the head and shank due to fluid pressure and the force of the spring when the welding pressure is removed.

REFERENCES:
patent: 4091255 (1978-05-01), Yamamoto
patent: 4140891 (1979-02-01), Lenox

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