Press brake
Machine for bending sheet and plate material / From Wikipedia, the free encyclopedia
A press brake is a machine used for bending sheet metal and metal plate, most commonly sheet metal.[1] It forms predetermined bends by clamping the workpiece between a matching top tool and bottom die.[2]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Bystronic_Bending.jpg/640px-Bystronic_Bending.jpg)
![A high-tonnage hydraulic press brake](http://upload.wikimedia.org/wikipedia/commons/thumb/2/28/High-tonnage_press_brake.jpg/640px-High-tonnage_press_brake.jpg)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Liwei_2000_Ton_Press_Brake_12_Meter.jpg/640px-Liwei_2000_Ton_Press_Brake_12_Meter.jpg)
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.