Patent ID: 6609404
Filing Date: 2003-08-26
Classification: B21D,Y10S

Abstract:
A machine for forming a workpiece, comprising:a pair of upper I-beams; a pair of lower I-beams; at least a pair of connecting plates, at least one of the pair of connecting plates rigidly securing the pair of upper I-beams together, and at least the other of the pair of connecting plates rigidly securing the lower I-beams together; at least two frame hydraulic cylinders connected between the at least a pair of connecting plates to movably join the pair of upper I-beams and pair of lower I-beams together adjacent one end to form a frame having the other end open for receiving the workpiece, the at least two frame hydraulic cylinders for moving the upper and lower I-beams closer together or farther apart; an upper housing movably mounted on the pair of upper I-beams; a lower housing movably mounted on the pair of lower I-beams; and a pair of hydraulic ram sets, one hydraulic ram set mounted in each of the upper and lower housings for positioning over a selected section of the workpiece and arranged to contact the respective outer or inner side of the workpiece at the selected section.