Design Nomenclature / Physical Model Making

Brake forming

Also called press braking, box and pan bending, air bending, bending

This entry has not been translated yet and is shown in English.

Bending sheet metal along a straight line between a punch and a die. The inside radius, not the crease, sets the geometry: material stretches outside the neutral axis and compresses inside it, so a flat pattern must carry a bend allowance or the finished part comes out short by millimetres on every fold.

Section through a 90-degree bend in sheet. The inside radius is dimensioned, the neutral axis drawn as a dashed arc nearer the inside face, and the outer fibre marked as stretched, the inner as compressed.

How this term connects

KerfNominal dimensionSheet metalSpringbackThermoformingToleranceBrake forming
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