Patent ID: 7975749

Claim:
A method of removing excess metal from a casting with a press, said method comprising: attaching a cutter to a movable die; setting a casting workpiece on a lower die positioned below the movable die; securing the casting workpiece in a center of the lower die by a receiving clamp; pivoting opposed retracting clamps to engage the casting workpiece; moving a holding clamp to engage the casting workpiece; linking motion of the receiving clamp, the opposed retracting clamps and the holding clamp to securely engage the casting workpiece therebetween; and punching excess metal of the casting workpiece into a recessed shape by one punching motion of the cutter, the cutter being composed of a plurality of blades of equal width and progressively increasing depth from a first blade, which is smallest, to a final blade, which is largest and protruding so that the excess metal of the casting workpiece is removed by the one punching motion of the cutter attached to the movable die.