Plasma arc hole cutter

Details Plasma arc hole cutter Plasma arc hole cutter

1987-07-23

1988-10-18

Stallard, Wayland

Metallurgical apparatus

Means for cutting solid metal with heat, e.g., blowpipes

Circle cutter

21912139, 21912148, 2191217, B23K 710

Patent

active

047781556

ABSTRACT:
A plasma arc hole cutting device is disclosed for removing selected portions of metal workpieces, such as stainless steel, for testing or marking purposes. A plasma torch is connected at one end to a rotatable cam element and spaced a distance from the center of the cam element such that rotation of the cam element by a drive motor causes the plasma torch to rotate in an orbit about a longitudinal axis defined by the cam element. Suitably supported, the plasma torch burns a circular hole through the workpiece, thereby creating a slug which may be removed and analyzed, leaving a circular hole in the workpiece.

REFERENCES:
patent: 2801098 (1957-07-01), Plumb
patent: 4063059 (1977-12-01), Brolund et al.
patent: 4201905 (1980-05-01), Clark et al.
patent: 4554431 (1985-11-01), Koeller
Weymueller, Carl R.; Tough Nickel Alloys Yield to Plasma Cutting; Welding Design & Fabrication; pp. 37-39; Dec. 1984.

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