Method and cutting tool for producing steel fibers

Details Method and cutting tool for producing steel fibers Method and cutting tool for producing steel fibers

1992-09-25

1995-04-11

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72326, 83349, B21D 2800

Patent

active

054047412

ABSTRACT:
Steel fibers which commonly are comprised of a straight center section and S-shaped end sections are commonly produced in two manufacturing steps: In a first manufacturing step straight sheet steel strips are cut from sheet steel and the resulting steel fibers are then stamped to produce the desired final shape. A method is suggested which combines the stamping and cutting of the fibers into one single manufacturing step. For this purpose, the upper or lower cutting blades are provided with a respective cutting contour which corresponds to the desired final shape. The cutting edge contour has a parallel leading center section in the direction of cutting that is parallel to the surface of the sheet steel. The two end sections are recessed and have a wave-shape or flat S-shape. When using a rotating cutting tool the rotating roller may have axially adjacent individual groups of upper cutting blades so that from the end face of an undivided sheet steel a corresponding number of adjacent steel fibers may be produced in a combined stamping and cutting step.

REFERENCES:
patent: 678837 (1901-07-01), Griffin
patent: 2399529 (1946-04-01), Willits
patent: 3935775 (1976-02-01), Sato
patent: 4000670 (1977-01-01), Fleetwood
patent: 4019357 (1977-04-01), Gokyu
patent: 4960020 (1990-10-01), Reinhard
Marian Grondziel and Michael Borttscheller; Development of Steel Fibre and Steel-Fibre-Reinforced Concrete During the Past 10 Years in Europe; Jun. 90.

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