Structure and Components of CNC Busbar Bending Machine

The CNC busbar bending machine consists of the body, torsion shaft, slider, stroke adjustment device, front support rack, moulds, hydraulic system, and electrical system.

Body
The entire frame structure is welded from left and right uprights, crossbeam, and front and rear supports. It features good rigidity, high precision, and high stability. The upper part of the left and right uprights is welded with fixed left and right oil cylinders. At the lower part of the uprights, left and right supporting base angles are installed to increase the bottom contact area and prevent the CNC bending machine from tipping over during transportation. After installation is completed, these supports can be removed.

Slider and Stroke Adjustment
The slider is made from a solid steel block. The left and right oil cylinders are mounted at both ends of the slider and connected via piston rods. The cylinders are fixed to the machine body and drive the slider through hydraulic power. Inside the cylinders, mechanical stops control the position of the slider at the bottom dead center. The stops are adjusted via a motor and worm gear mechanism, with the stroke counter displaying the corresponding values.

Synchronization Mechanism
The slider operates with a torsion shaft synchronization mechanism, in which the torsion shaft connecting rods are linked to the slider. This structure is simple, stable, and reliable.

Front Support Rack

Rear Support Rack
The rear positioning of the workpiece is achieved by adjusting the back gauge rod's forward and backward position. The coarse adjustment is performed by a motor through a transmission system, followed by fine adjustment via a handwheel. The position is displayed on the stroke counter of the button box. If the measured value does not match the displayed value, pull out the small lever on the left side of the button box and turn it gently to align the display value with the actual size, then push the lever back into place. The back gauge rod is equipped with a vertical lead screw. By rotating the knurled nut, the rod can be moved up and down, making it flush with the top surface of the lower die.

Mould
The upper part of the upper die is equipped with a connecting plate. By adjusting the wedge position, a slight vertical deflection can be applied to the upper die to compensate for the deformation (or deflection) of the worktable and slider under load. This effectively improves the bending accuracy of the workpiece.

Hydraulic System
The system can achieve four operating speeds: rapid downward movement of the slider, slow downward approach to the workpiece, slow bending, and rapid return.

Electrical System
The electrical cabinet contains various operation buttons and is equipped with a mechanical door lock. When the door is opened, the power is automatically cut off. For maintenance, the system can be manually reset, and the pull rod can be pulled out. After the power is cut off by opening the door, note that the main circuit still remains live.