Process and apparatus for the cutting of transformer core sheets

Details Process and apparatus for the cutting of transformer core sheets Process and apparatus for the cutting of transformer core sheets

1976-03-18

1977-05-10

Abercrombie, Willie G.

Cutting

Processes

With reorientation of tool between cuts

83 36, 83220, 83556, B26D 324, H01F 706

Patent

active

040220885

ABSTRACT:
Transformer core sheets are cut out by selectively intermittently advancing a metal strip and cutting off the ends at various angles by changing the cutting angle of a swivel-type cutting shear. Trapezoidal or parallelogram pieces are cut by cutting off the lengths of strip along shear lines alternately at 90.degree. to each other. Hexagonal pieces are formed by severing the strip with one oblique cut, spacing the stock and the cut-off piece lengthwise from each other, and then cutting off a tip on each piece by a single cut that bridges the gap between the pieces, at 90.degree. to the previous cut. For this purpose, the cut-off piece may be advanced or the stock retracted, or both, to space apart the stock and the cut-off piece. A further cutter, at right angles to strip travel, may be provided for cutting off tips of the workpieces previously obliquely cut, at right angles to the direction of strip movement.

REFERENCES:
patent: 3122042 (1964-02-01), Littell et al.
patent: 3338123 (1967-08-01), Nelson
patent: 3540120 (1970-11-01), De Laurentis et al.

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