Method and apparatus for disassembly of a spot-welded structure

Details Method and apparatus for disassembly of a spot-welded structure Method and apparatus for disassembly of a spot-welded structure

1984-06-08

1987-02-24

Watts, Douglas D.

Cutlery

Perforating or indenting implements

Hand-guided, motor-driven

30366, B26F 100

Patent

active

046446567

ABSTRACT:
A method and apparatus for removing spot welds from a sheet metal structure is shown. A fluid powered hand punch has a handpiece and an L-shaped extension forming a punch die. An elongated rod extends from a fluid piston within the handpiece to a punch bit, allowing the punch to be conveniently positioned over spot welds in diverse structures. An extension of the handpiece body guides and stabilizes the rod. Spot welds are removed by positioning the punch bit over the weld and entirely punching it out. A tapered punch bit engaging the metal along a partial perimeter of its front face is also shown.

REFERENCES:
patent: 3877280 (1975-04-01), Cornell
patent: 3924330 (1975-12-01), Mitsuhashi et al.
patent: 4479553 (1984-10-01), Virgili

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