Patent ID: 8234900

Claim:
A corrugated metal sheet member fabrication system comprising a roller ramming unit mounted on a machine base thereof, a metal sheet reel adapted to let off a metal sheet material through an entry guide into said roller ramming unit for enabling the fed metal sheet material to be roller-rammed by roller sets of said roller ramming unit into a corrugated form, a cut-off unit adapted to cut the corrugated metal sheet material into corrugated metal sheet members subject to the desired size, each said corrugated metal sheet member having a plurality of corrugated portions, a lateral edge at one side of a first lateral corrugated portion, dents or through holes located on said lateral edge, and a conveying unit adapted to transfer said finished corrugated metal sheet members to a predetermined location, wherein said roller ramming unit comprises a flange-forming roller set located on said machine base near a rear side thereof for ramming a part of a second lateral corrugated portion of each said corrugated metal sheet member opposite to the first lateral corrugated portion of the respective corrugated metal sheet member into an inwardly protruding bottom flange, a flange cutting tool located on said machine base behind said flange-forming roller set for cutting said inwardly protruding bottom flange subject to the desired length and shape, a stamping mold located on said machine base between said flange cutting tool and said cut-off unit for stamping the first lateral corrugated portion of each said corrugated metal sheet member into a transversely curved profile having a longitudinal groove and simultaneously stamping each said corrugated metal sheet member into a stepped configuration.