Press Brake Machine for Bending Metal Sheet- Factory Suppliers Manufacturers From China

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!

LZK launches Taurus, a new large-format gantry-style fiber laser cutting machine engineered for extra-large sheet metal cutting capacity. A unique modular design, the machine size begins at a 12-meter bed length and can be expanded in increments of 4 meters to a maximum bed length of 42 meters to suit user needs. The large format allows a diverse range of parts to be cut and efficiently nested, increasing productivity and optimizing material usage.

Large-scale advantages

Taurus offers the flexibility to handle very large sheets or multiple sheets, with a cutting range that ensures high machine dynamics for jobs of different batch sizes, shapes and material types, accommodating workpieces up to 3.3 meters wide and 30 mm thick.

Large parts can be processed without repositioning, while multiple smaller parts can be placed on the cutting table and processed in a continuous manner without interruption. Parts can be cut in one part of the table and loaded/unloaded in another, keeping downtime to a minimum.

Taurus is designed for easy access. Only the gantry comes with a housing, not the entire machine. The mechanical design and drive system ensure high machine dynamics during large format cutting.

The operator has easy access to the controls at all times using two touch panels.

The handheld control unit allows the operator to safely move all axes in manual mode for machine setup or loading the nozzle changer. A camera located in the cutting area and a monitor on the operator console allow continuous monitoring of the cutting process. The cutting area has a removable front panel for easy maintenance.

The machine does not require a special foundation.

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.

The high-quality laser cutting machine has a good performance in the field of thin-plate processing. The role of the laser cutting machine cannot be underestimated, which is deeply favored and recognized by people. It provides a wide range of opportunities. The versatility, speed, and precision enable to produce everything from a simple machine concept to packaging.

• Are laser cutting machines dangerous?

• Is a laser cutting machine strong enough to cut a hand?

• What are the factors affecting laser cutting machine price?

Are laser cutting machines dangerous?

Laser cutting machine allows for precise measurements and for users to get the exact dimensions. But the process can do harm to our health because of the harmful fumes emitted. It is more dangerous if workspaces do not have the air filtration systems.

Laser cutting machines are classified by the American National Standards Institute, as a Class 1 laser. They are not overly hazardous that they do not emit high levels of energy. Laser beams are hazardous during the cutting or engraving process because air contaminants are released. Harmful emissions are usually associated with Class 3B or 4 lasers. Chemical vapors, aerosols or smoke can be emitted when a laser beam is interacting with various materials.

During the cutting process, high temperature causes the surrounding air to expand. Once materials are cut by the laser cutting machine, they will emit gases that rapidly expand and release dangerous particles.

Is a laser cutting machine strong enough to cut a hand?

While laser cutting machine is relatively safer compared to conventional methods, the operators still practice with caution as the laser is powerful enough to burn skin and cut a hand.

However, the possibility that an accident would occur by a laser cutting machine is very low because it has a safety lid that can be closed or opened at any given time. The cutting process is done in a safe and controlled environment.

The disadvantage of laser cutting machine is that it cannot work on thicker metals. Its cutting capability depends on the material thickness and laser power. But even with this limitation, it doesn’t mean that the cutting power should be underestimated because it is still strong enough to cut a hand in a matter of seconds.

What are the factors affecting laser cutting machine price?

We all know that brand is an added value of laser cutting machine. The brand effect is reflected in the machine quality, kits, parts, performance, and after-sales service. The laser cutting machine of big brands will have higher prices than those of small factories.

The price of large-sized laser cutting machines is higher than that of small-sized ones. The price of the customized laser cutting machine is higher than that of the regular-sized ones.

The laser is the core optical component of the laser cutting machine. Different laser generators have different laser beam qualities. Imported lasers are superior to domestic lasers in terms of stability and beam quality. For the same brand laser generator, the greater the laser power, the higher the price.

Other key components mainly include guide rails, rack and pinion, motor, and water chiller. They also affect the price.

Learn more something about laser cutting machine can know the harmful side effects of laser cutting machine and the factors affecting the price of fiber laser cutting machine. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. specializes in providing different types of products.

A press brake is a special type of machine press that bends sheet metal into shape. A good example of the type of work a press brake can do is the back-plate of a computer case. Other examples include brackets, frame pieces and electronic enclosures. Some press brakes have CNC controls and can form parts with accuracy to a fraction of a ...

Metal Cutting Guillotine for material less than 4.0mm In the 70s and 80s, the legendary John Heine 108B (2.5m x 3.0mm)Guillotine dominated Australian sheet metal shops. This beauty cut at a rate of 55 Strokes per minute (SPM), today if you aren't careful, some of the cheap machines on the market are as slow as 12 SPM.

Mar 20, 2007 · The maximum capacity of a sheet metal brake or shear is based on the total thickness/gauge of mild steel at its full length. For example, 20-gauge mild steel is .036” thick. So, a 20-gauge brake has a maximum bending capacity of .036”. Now to find the maximum capacity for aluminum, simply multiply the thickness of your mild steel by 1.5.

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