What is cnc press brake machine

What is cnc press brake

CNC press brake is the use of the equipped mold (general or special mold) will be cold metal sheet bending into a variety of geometric section shape of the workpiece. 

It is a sheet forming machine designed for cold rolled sheet metal processing, 

widely used in automobile, aircraft manufacturing, light industry, shipbuilding, containers, elevators, railway vehicles and other industries of sheet bending processing.

CNC press brake generally use bending machine special numerical control system, cnc press brake  axis has been developed from a single axis to 12 axis, 

can be automatically realized by the numerical control system slider running depth control, slider tilt adjustment, 

back gauge before  and after adjustment, left and right adjustment, pressure tonnage adjustment and slider approaching work speed adjustment and so on. The press brake machine can easily realize the slide downward, point, continuous, pressure holding, return and stop in the middle of the action, one feeding to complete the same Angle or different angles of the multi-bend bending

CNC press brake has different models, the common G type, F type, WC67K type and so on.

It is developed according to the principle of plastic plate heating, softening, melting and welding. It is suitable for all thermoplastic materials. 

Bending machine mold, has the following characteristics: bending directly, without joining together, without slot, don't need a electrode, 

the Angle of the appearance it hold water, at the same time, processing speed, Angle processing surface appearance, high strength, 

it will be hand soldered into a fully automatic machine operation, improve the quality, improve the work efficiency, reduce the labor cost, shorten the production cycle of products.

Advantages of CNC press brake:

1, Direct Angle programming, with Angle compensation function.

2. Grating ruler real-time detection feedback correction, full closed-loop control, Backgauge and slider stopper positioning accuracy is ±0.02mm.

3, The upper die adopts the fast clamping device, the lower die adopts the oblique wedge deformation compensation mechanism.

4, With multi-step programming function, can realize multi-automatic operation, complete multi-step parts one-time processing, improve production efficiency.

5, According to user needs can choose stable performance, compact structure of imported hydraulic system, rear baffle can choose ball screw, synchronous belt drive

The composition of the bending machine

1.The slider

Slider part: hydraulic transmission, slider part is composed of slider, cylinder and mechanical block fine tuning structure. 

The left and right cylinders are fixed on the frame, and the piston (rod) drives the slider to move up and down through hydraulic pressure, 

and the mechanical block is controlled and adjusted by the numerical control system.

2.The workbench

Workbench part: operated by button box, the motor drives the baffle frame to move forward and backward, 

and the moving distance is controlled by the numerical control system, 

the minimum reading of which is 0.01mm (there are travel switch limits at the front and back positions).

3.Synchronization system

Synchronous system: Different from ordinary bending machine, 

this machine uses servo valve and grating ruler and other hydraulic devices to form a closed-loop loop, 

so as to accurately control the various actions of the bending machine.

4.Backgauge

Adopt motor drive, drive two lead screws to move synchronously through chain operation, 

numerical control system controls the size of the retaining material

CNC press brake mainly adopts plate bending machine structure; It consists of a full closed-loop CNC system of bending machine, two grating rulers, 

a photoelectric encoder real-time detection and feedback, and a stepper motor driving lead rod. Two grating ruler; 

One to the Backgauge, one to the slider position real-time detection feedback correction; 

The photoelectric encoder detects the position of the cylinder dead block and feeds back to the numerical control system.