A press brake is a type of brake, a machine used for bending sheet metal and metal plate.[1] It forms predetermined bends by clamping the workpiece between a matching top tool and bottom die.[2]
Typically, two C-frames form the sides of the press brake, connected to a table at the bottom and on a movable beam at the top. The bottom tool is mounted on the table, with the top tool mounted on the upper beam.
^Parker, Dana T. Building Victory: Aircraft Manufacturing in the Los Angeles Area in World War II, p. 29, 83, Cypress, CA, 2013. ISBN 978-0-9897906- 0-4.