This machine adopts full steel welding structure with enough hardness and rigidity. It also has been heated processed and highly frequently vibrated. Adopting floor boring-milling machine for precision Hydraulic swing structure, blade return unit with nitrogen cylinder and fast return Hydraulic system adopts integral logic loop controlled by order valve with stability, low noise and easy maintenance. Rexroth hydraulic valve german controlling the blades moving Pressing unit adopts integral loop and parallel pressing cylinder. When the plate is uneven, it can be adjusted to press the plate tightly. The pressure also can be adjusted according to the plates material and thickness for protecting the plate surface. Eccentric unit for adjusting the blade gap in manual with easy operation and flexibility. Potentiometer controlling the stroke Light beam shadow overlapping the drawn line no the plate
