MaterialSheet metal is an anisotrop

MaterialSheet metal is an anisotropic material, i.e. its properties are not the same in all directions. As all press brake operators worth their salt know, its behaviour changes depending on the direction of rolling. It is therefore useful to cut all the pieces in the same direction, or to divide them into pieces cut parallel to the fiber and perpendicular to the fiber. Nesting with variable orientation is not recommended. We may save sheet metal by fitting an extra piece in the sheet, but we risk wasting parts and time because we don’t get the right angle when bending.It is also useful to divide the pieces according to the area. The internal tensions of the sheet change between the centre and the edges, due to the stresses introduced by the rolling.Do not mix pieces cut from different batches of sheet metal or different packs. The inevitable differences between one casting and another mean variable hardness and elasticity, which can affect the final result.In these cases, a real-time angle control system and adaptive crowning can help us obtain constant angles even if the pieces have been cut in a different direction.