Metal deforming – By use of 'flying tool' engaging moving work – Included in plural deforming stations or passes
Patent
1988-05-12
1989-08-22
Larson, Lowell A.
Metal deforming
By use of 'flying tool' engaging moving work
Included in plural deforming stations or passes
72194, 72224, B21H 802
Patent
active
048584576
ABSTRACT:
A machine for making concrete reinforcing bars, known as rebars, from wire stock having a round cross section. A preform roller station cold works the round cross section of the wire stock into the shape of a polygon. A first form roller station cold works the polygonal cross section into a cross section having a central core and radial fin members extending therefrom. A second form roller station further reduces the diameter of the central core, and further increases the radial extent of the fin members. A third form roller station reduces the core still further, and again increases the radial extent of the fins, imparts shoulder members that provide an anti-longitudinal slip function at preselected intervals along the extent of the rebar, and roughens the rebar.
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Larson Lowell A.
Mason, Jr. Joseph C.
Smith Ronald E.
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