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US 6,282,936 B1Granted
Cold-forming process and apparatus
AssigneeAusarch Pty. Ltd.
InventorWade Hylton Blazley
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AssigneeAusarch Pty. Ltd.
InventorWade Hylton Blazley
Estimating the term…
This invention relates to sheet metal buildings of relatively large size and more particularly but not exclusively to processes and apparatus for cold-forming elongate building elements of such buildings and methods of building construction. The invention provides in one aspect cold-forming dies 30, mounted on intermediate transverse members 21 of a frame 1, comprising a set of coextensive generally in register dies between which the strip is received. The set comprises a male die 22 having a concave leading edge 24 and a female die 23 having a convex leading edge 18. The male die 22 and female die 23 are driven towards one another to plastically deform the strip 6 into a channel section. The concave leading edge 24 is provided with a coextensive protrusion 26 and the convex leading edge is provided with a coextensive recess 27. At the same time that the dies 22, 23 mate to plastically deform the strip 6 into a channel section the protrusion 26 and recess 27 of the respective dies 22, 23 mate to form a transverse rib 28 in the strip 6.
Apparatus for forming an elongate longitudinally arcuate building element of channel cross-section having transverse ribs from sheet metal comprising a set of coextensive generally in register dies through which a sheet of metal can be received, said set comprising a male die and a female die which cooperate to form transverse ribs in the sheet wherein further one of said male die and female die is provided with a concave leading edge and the other die is provided with a convex leading edge thereby the dies cooperate to plastically deform the sheet into a channel section, the dies being provided with orbital motions which cooperate to bring the dies into engagement with the sheet, draw the sheet along a transit path therebetween while cold-forming the sheet and then disengage the sheet with each sweep about their orbits.
A process of forming an elongate longitudinally arcuate building element of channel cross-section having transverse ribs from sheet metal comprising the steps of;
Dependencies are inferred from the claim text.