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Shearing machine is very important in the era of scientific and technological development. In terms of work efficiency, many enterprises have seen the light in the production of finished products due to shearing machine. They play a very important role in processing such as metal and non-metal plates.

• Why is shearing machine widely used?

• What is the structure of shearing machine?

• How does shearing machine work?

Why is shearing machine widely used?

The shearing machine plays a role in fast cutting for some panels that need to be processed. The traditional cutting wood is more often used by the see-saw method, which has slow speed and makes people tired. The saw blade is very easy to wear and break. However, the use of shearing machine gives a feeling of high efficiency, convenience and the high quality. Because the shearing machine has two blades merged into one joint, which can be adjusted, it can be cut at any angle, even if the plate is bent and deformed.

What is the structure of shearing machine?

The main structure of the shearing machine is generally composed of the body, the transmission system, the knife holder, the presser, the front stopper, the rear stopper, the supporting device, the blade gap adjustment device, the light alignment device, the lubrication device, electrical control devices and other components.

The shearing machine is welded by steel plate, which has good rigidity. The two cylinders are fixed on the left and right columns. The auxiliary tool holder is provided on the working table to facilitate the micro adjustment of the lower tool holder. There is also a feeding ball on the working table of shearing machine.

The upper tool holder is a steel plate welded structure. It uses the eccentric sleeve as the fulcrum to swing back and forth under the drive of the left and right oil cylinders and the accumulator return cylinder to complete the shearing. The vertical supporting surface of the blades of shearing machine forms an arc-shaped curve to ensure the consistency of the gap between the upper blades during the cutting process.

The material pressing device is composed of several material pressing oil cylinders installed on the front supporting surface of the frame. The head presses down after overcoming the tension of the relay spring to compress the sheet material. It resets by the pulling force of the tension spring.

How does shearing machine work?

The shearing machine should be able to meet requirements of the straight and parallel shearing surface of the sheared sheet. Shearing machine should minimize the distortion of the sheet to obtain high-quality workpieces. The upper blade of the shearing machine is fixed on the knife holder, while the lower blade is fixed on the workbench. A holding ball is installed on the workbench so that the sheet material will not be scratched when performing. The back gauge is used for positioning the plate that the position can be adjusted by the motor. The pressing cylinder is used to compress the sheet to prevent the sheet from moving during shearing. The guardrail is a safety device to prevent work-related accidents. The returning generally relies on nitrogen, which is fast and has little impact.

The movement of the shearing machine is that the belt on the motor transmits the torque to the large pulley shaft. The large pulley shaft has a small gear at the other end. The power is transmitted from the small gear to the large gear on the shearing shaft. The large gear shaft is equipped with a clutch mechanism. When the shearing machine is operated, the large gear drives the shearing shaft. The eccentric wheel on the shearing shaft drives the upper knife holder to move up and down linearly through the connecting rod to shear.

Learn more something about shearing machine can know the structure of shearing machine and how shearing machine works. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. is the leading company in the CNC industry. We are glad to hear from you!

The steel bent by the CNC press brake has a relatively large advantage over the others. Because the residual stress of the steel material of the CNC press brake is relatively small with dense weld seam. The CNC press brake in the production practice produces section steel with very messy interface shapes, which is impossible for traditional processes.

 

•  What are the features of CNC press brake?

•  What are the functions of CNC press brake?

•  What are the applications of CNC press brake?

 

What are the features of CNC press brake?

CNC press brake has direct angle programming with angle compensation function.

The grating ruler does real-time detection to feedback correctly. CNC press brake takes full closed-loop control. Backgauge and slider dead gauge positions accurately within 0.02mm.

The upper mold of CNC press brake adopts a quick clamping device, while the lower mold uses a wedge deformation compensation mechanism.

With multi-step programming function, CNC press brake can realize multiple automatic operation, completing one-time processing of multi-step parts. It improves production efficiency.

The imported hydraulic system with stable performance and compact structure can be selected according to user requirements. The backgauge can be driven by ball screw and timing belt.

The press brake uses a touch screen with a CNC module, which makes it easy to program and very simple to operate.

CNC press brake makes full use of electrical-hydraulic control. The slider operation can realize single, continuous stroke and halfway stop operations, which is easy to realize automatic operation.

 

What are the functions of CNC press brake?

The user interface is the dialogue interface between the CNC press brake and all users, especially non-professional users. Through window and menu operations, functions such as graphic simulation, graphic dynamic tracking, simulation and fast programming can be realized.

CNC press brake performs visualization of scientific computing. Information exchange is no longer limited to text and language, but can directly use visual information such as graphics, images, and animation. Visualization technology can be used for computer-aided design, manufacturing, automatic parameter setting, tool compensation, display and visual simulation of machining process.

The CNC press brake is equipped with a high-performance programmable controller, which can be programmed directly with ladder diagram or high-level language. It can also be debugged and edited online to establish its own program.

 

What are the applications of CNC press brake?

The CNC press brake is to use the equipped mold to bend various shapes of metal sheets into various cold-shaped parts. It is used in sheet bending processing in industries such as automobiles, aircraft manufacturing, light industry, shipbuilding, containers, elevators, and railway vehicles.

Precise metal materials are must for the aerospace industry. Aircraft requires as much of a guarantee to safety and performance as possible. CNC press brake can be used to manufacture components of the motion control, sensors and actuation systems. CNC press brakes are also able to manufacture braking and landing parts.

A variety of metal materials are produced with CNC press brake for the automotive industry, ranging from cold roll steel, stainless steel, aluminum to carbon steel. They would become transmission covers, seat parts, brake components, battery housings, and many other parts used in building automotive engines.

Metal bending is to create aesthetically components that are perfectly rounded and finished. The materials bent by the CNC press brake go into making stoves, microwaves, refrigerators, dishwashers, bed frames, entertainment centers, washing machines, and dryers, or even outdoor furniture

 

Learn more about CNC press brake can know the features of CNC press brake and the applications of CNC press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. is equipped with many professors in manufacturing and offering solutions. 

The CNC press brake is primarily a machine tool that is utilized for bending a metal sheet or plate into a shape determined by its die set. CNC press brake plays a very important role in sheet metal manufacturing.

• How to perform CNC press brake?

• How to adjust the gap between blades of CNC press brake?

• What should be considered when using CNC press brake?

How to perform CNC press brake?

Close the rear protective door of the CNC press brake. Turn on the power. Turn on the switch on the control panel of CNC press brake. Then, start the oil pump. The CNC press brake does not operate at this time. Release all emergency stop switches.

Adjust stroke. Pay attention to adjusting the stroke when using it. You must test it before bending. There must be a gap of plate thickness when its upper die descends to the bottom. Otherwise, it will cause damage to the CNC press brake. The adjustment of the stroke also has electric quick adjustment.

For the selection of bending notches for CNC press brake, a notch with a width of 8 times the thickness of the plate should generally be selected.

Backgauge adjustment generally has electric quick adjustment and manual fine adjustment, which is the same as the shearing machine.

Press down the blue "reset" button on the pedal and the "reset rearguard" button on the electric box, ensuring that the two blue reset indicator lights are off.

Turn the function forwarding switch to the "auto" position and press the motor start button after the controller self-test is over.

The CNC press brake finds the reference point and loads the corresponding bending program. Ensure that the mold installed in the CNC press brake is consistent with the programmed mold. Ensure that the sheet material is consistent with the programming page.

How to adjust the gap between blades of CNC press brake?

Remove the lower blade of CNC press brake and clean it piece by piece. Select one side to install tightly. Check the straightness of the blade in the horizontal and vertical directions.

Remove the upper blade of CNC press brake and clean it piece by piece. Then, the operation is same with that of the lower blade.

The upper blade is fixed. We adjust the blade gap by adjusting the lower blade.

The left and right screws of the lower blade increase the clearance. Loosen the four bolts on the table of the lower blade.

Manually turn the upper blade down to the proper position. The operator adjusts at the blanking area of the CNC press brake.

Use a feeler gauge to roughly adjust to 0.5mm from the unoccupied part of the upper and lower blades.

Manually turn the blade to the middle position and adjust it to 0.5mm.

Manually turn the blade up to the right position where the upper and lower blades are not disengaged. The middle position is roughly adjusted to 0.5mm.

Manually turn the upper blade to the proper position and start fine adjustment.

What should be considered when using CNC press brake?

Before working, you must check the surrounding area of CNC press brake for any objects that may cause harm to it. Make sure the surroundings are clean, especially backgauge. Check the position of the oil mark in the oil tank. Check the hydraulic part for leaks.

The CNC press brake should be operated by professors. The operators must wear the corresponding labor protection supplies.

After turning on the power switch of the CNC press brake, do not start the oil pump immediately. Start the oil pump only after the computer screen displays normal.

After starting the CNC press brake, run it for 2 to 3 minutes without anything. Run the slide block at full stroke for 2 to 3 times. Check the motor and CNC press brake for noise. If the temperature is low, the oil tank and oil circuit must be preheated.

Learn more about CNC press brake can know how to perform CNC press brake and the warnings of CNC press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. can help you learn more about the CNC machines.

The CNC press brake mainly performs straight-line bending of the plate. Through the use of simple molds and process equipment, the metal sheet can be pressed into a certain geometric shape. CNC press brake is actually a multi-purpose fabricating machine. CNC press brake is suitable for several types of metal forming operations.

• What are the failures of CNC press brake?

• How to solve the large bending angle error of the CNC press brake?

• How to maintain CNC press brake?

What are the failures of CNC press brake?

Sometimes, there is the large or small bending angles during CNC press brake operates. It may be that the plate is uneven or the plate thickness has changed. It is also possible that the shaft in the CNC press brake is caused by deviation.

The oil pump of CNC press brake is too noisy or heats fast. Even, the oil pump is damaged. The oil pump suction line leaks or the oil tank liquid level is too low, causing to suck. The oil temperature is too low and the oil viscosity is too high, resulting in high oil absorption resistance. The oil filter at the suction port is clogged. Coupling installation is too tight to make the motor shaft and the oil pump shaft nonconcentric.

The CNC press brake system is pressure-free or cannot be built up. The oil pump rotates incorrectly. Whether the pressure gauge is damaged. Whether the pressure control valve has an electrical signal or the valve is blocked. The pressure cartridge valve is blocked or stuck that cannot seal the oil.

How to solve the large bending angle error of the CNC press brake?

With the continuous development of CNC press brake manufacturing technology, CNC press brake has the advantages of high positioning accuracy, convenience, zero-activity disturbance compensation, and good consistency of processed products.

Check whether the compensation deflection of the compensation cylinder is large so that the zero position cannot be completely restored.

Check whether the quick clamp and grating ruler is loose.

Check whether there is any change in the bottom dead center of each bending.

Check whether the bow-shaped plate is installed in a standard way and whether the screw hole is deadlocked.

The large bending angle error of CNC press brake can also be caused by changes in the sheet, such as thickness, material, and stress。

There is inaccurate positioning of CNC press brake that whether the zero offset value of the proportional valve is appropriate or not. It may be impossible to return because the positioning cannot reach the bottom dead center.

How to maintain CNC press brake?

After each shift, clean the work area of CNC press brake by removing all debris with a dry cloth. Clean the tools, bench, supports, slide guides and other accessories. Clean the backstops and guides of the backgauge. Do not use compressed air for cleaning.

The lubrication parts are sufficiently greased.

The motor and oil pump of CNC press brake operate normally without noise and overheating.

The safety protection device is safe and reliable.

Check whether the pressure of the hydraulic system is within the rated range.

The indicator is sensitive and reliable.

When repairing after the end of production, the slider needs to be lowered to the lowest point.

Check whether the fixed part of the mold is loose before work.

When working, the CNC press brake must not exceed the maximum pressure that is 160KN.

Learn more about CNC press brake can know the failures of CNC press brake and how to maintain CNC press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. can help you keep CNC press brake in better condition.

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