Patent ID: 6363766
Filing Date: 2002-04-02
Classification: B21D

Abstract:
A sheet metal bending machine, comprising:a fixed counter-blade; a mobile blank holder which is movable towards the counter-blade to lock a planar portion of the sheet metal thereon; a bending blade holder and a bending blade fixedly supported thereby; said bending blade holder being movable in perpendicular and parallel directions with respect to the locked planar portion of sheet metal to cause the bending blade to engage the sheet metal in order to bend a peripheral edge of the sheet metal; wherein said bending blade has a single blade body provided with bending teeth fixed relative to each other which extend therefrom in respective directions substantially perpendicular to each other in order to cause bending of the sheet metal edge, one of the teeth extending so as to bend the sheet metal perpendicular to the locked planar portion with the bend extending in one direction and the other tooth extending so as to bend the sheet metal perpendicular to the locked planar portion in a direction opposite to the one direction.