Post-forming method and apparatus
OwnerAshley Dean Olsson, Ashley Norman Olsson +2inventors
InventorsAshley Dean Olsson, Ashley Norman Olsson, Nathanael Dean Olsson, Stafford James Olsson
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Abstract
One aspect of the invention concerns a metallic bar or post (15) comprising a longitudinal axis; a spine (16) extending along the longitudinal axis; and at least three interconnected arms (17-19), each of which extends along the spine (16) and generally radially from the spine (16), with a free end (20-22) of each said arm (17-19) being tapered in the direction of the free end (20-22) to the spine (16). Other aspects of the invention concern a roll stand and rolling mill for forming the bar or post (15).
Claims40
A roll stand for shaping a steel or alloy steel bar of the type having a central longitudinal axis and at least three interconnected arms, each of which extends along the central longitudinal axis and generally radially from the central longitudinal axis adjacent one another, said roll stand comprising:
- a pass line along which the central longitudinal axis of the bar is able to generally travel;
- and
- roll assemblies for shaping said arms, with each said roll assembly comprising:
- a roll having an axis of rotation and a circumferentially extending contoured rim extendable between any two adjacent bar arms;
- and
- a roll positioner for moving the roll towards or away from the pass line,
- wherein the rolls are spaced about the pass line with their said axes of rotation in a common plane and said contoured rims provide a void through which the pass line extends,
- wherein the rolls are capable of shaping the arms of the bar as the bar passes through the void, and
- wherein the roll positioners are capable of moving the rolls incrementally within the common plane so as to change the size of the void.
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A method of rolling a steel or alloy steel bar of the type having a central longitudinal axis and at least three interconnected arms, each of which extends along the central longitudinal axis and generally radially from the central longitudinal axis adjacent one another, said method comprising the step of passing a bar through at least one roll stand, wherein the roll stand comprises:
- a pass line along which the central longitudinal axis of the bar substantially travels;
- and
- roll assemblies for shaping said arms, with each said roll assembly comprising:
- a roll having an axis of rotation and a circumferentially extending contoured rim extending between any two adjacent bar arms, and
- a roll positioner for moving the roll towards or away from the pass line,
- wherein the rolls are spaced about the pass line with their said axes of rotation in a common plane and said contoured rims provide a void through which the pass line extends and shape the arms of the bar as the bar passes through the void, and
- wherein the roll positioners are capable of moving the rolls incrementally within the common plane so as to change the size of the void.
A steel or alloy steel bar of substantially solid cross-section comprising:
- a central longitudinal axis;
- and
- at least three interconnected arms, each of which extends along the central longitudinal axis and generally radially from the central longitudinal axis, with a free end of each said arm being tapered in the direction of the free end to the central longitudinal axis or generally enlarged relative to an intermediate region of the arm between the free end and the central longitudinal axis.
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Dependencies are inferred from the claim text.