This article discusses the principles of the press-brake forming process and its applicability with an example. It describes the types of press brakes and examines some considerations, which help in the selection of machine. The article provides information on flattening dies, gooseneck punches, wiping dies, channel dies, arbor-type punches, box-forming dies, curling dies, beading dies, and cam-driven dies, with illustrations. It discusses the tool material selection for various operations. The article explains the procedures used for producing different shapes, including simple boxlike parts, panels, flanged parts, architectural columns, fully closed parts, and semicircular parts. It examines the effect of work metal variables on results in press-brake operations. The article also reviews stock tolerances, design, and condition of machines and tools, which help in obtaining good dimensional accuracy.
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