A press brake forms metal by using a punch and die set. The metal sheet is placed between them, and pressure is applied to bend the metal to the desired angle.
A flat sheet of metal is positioned on the lower die.
The position is often aligned using back gauges to ensure accuracy.
The upper punch (attached to a ram) moves downward and presses the metal into the lower die.
As the punch presses the sheet, the metal bends along the die's shape.
The bend angle depends on the depth of the punch and the die’s geometry.
After the bend is made, the punch retracts.
The bent metal is removed or repositioned for the next bend.