Press Braking

The most common press brake bending method, in which the punch forces the metal partway into a V-die without bottoming out.

The programmable motion axes on a CNC press brake.

A programmable stop behind the press brake die that positions the workpiece for accurate, repeatable bends.

The arc-length of material consumed in forming a bend, accounting for the metal's stretching in the bend zone.

The difference between the sum of the outside mold line lengths and the developed flat pattern length.

The line on the flat blank along which the material is bent.

The inside radius of a formed bend, measured from the inner material surface.

A bending method where the punch fully closes onto the material against the die, producing more accurate, springback-free angles than air bending.

A press brake operation that forms four-sided enclosures or box shapes by making sequential bends.

A computer numerically controlled press brake that automates ram stroke, back gauge position, and bend speed for precise, repeatable results.

A high-tonnage bending method that plastically deforms the material under extreme pressure, eliminating springback entirely.

A compensation technique that adjusts the deflection of the press brake's ram and bed along their length to achieve a uniform bend angle across the full part width.

The width of the V-die groove.

The distance from the bend line to the edge of the material on either side of a bend.

The planned order of bends on a multi-bend part, designed to ensure each successive bend can be made without interference from previously formed flanges, back gauge fingers, or the machine frame.

A press brake punch with a curved or offset body that allows bending of deep-flanged parts without the formed material interfering with the machine ram or frame.

A fold created by bending metal 180 degrees back onto itself, producing a smooth, stiffened, finished edge.

A dimensionless constant representing the location of the neutral axis relative to the material thickness during bending.

The shortest flange dimension that can be supported by the die during bending without the material slipping.

The theoretical plane within the material cross-section that neither compresses nor elongates during bending.

A bending operation that creates a stepped or Z-shaped profile by making two closely spaced bends in opposite directions.

A machine tool that uses a punch and die set to form precise bends in sheet metal and plate.

The upper tooling component of a press brake that contacts the workpiece and forces it into the die.

The vertically moving upper beam of the press brake that drives the punch into the workpiece.

The horizontal distance from the bend tangent point to the bend line on the flat material.

A numeric designation for sheet metal thickness, where larger numbers represent thinner material.

The elastic recovery of the workpiece after the bending force is released, causing the actual bend angle to be slightly more open than the formed angle.

The pressing force applied by the press brake ram, measured in tons.

The matched punch and die set installed in the press brake to form bends.

The lower tooling component of a press brake featuring a V-shaped groove into which material is bent.