Nc Brake Press Machine- China Factory Manufacturers Suppliers

All operation of press brake must be carried out by qualified and experienced operators with signs posted. Do not put hands or other parts of the body between the press brake. Use the right press brake for working at heights without risk.

• What should be prepared before using press brake?

• How to operate press brake?

• What are the warnings when using press brake?

What should be prepared before using press brake?

When operating the press brake, in order to prevent the occurrence of problems, the preparations must be carried out.

Clean the oil stains on the appearance of press brake. The engraved line on the stop valve should be in the open position.

Turn on the press brake for a few cycles, ensuring that there are no abnormal conditions. Try cutting different thickness sheets. During trial cutting, the gap between the different blades must be adjusted because the thickness of the plate is different. Otherwise, the durability of the blade will be affected.

During the cutting process, turn on the pressure gauge and check the oil pressure value. If any abnormality, the relief valve can be dispatched to meet the specified requirements.

When operating the press brake, if abnormal noise or overheating of the oil tank is found, the press brake should be stopped and checked. The high temperature of the fuel tank does not exceed 60 degrees.

How to operate press brake?

Turn on the press brake power and the key switch on the control panel. Then, press the oil pump to start.

The press brake must pay attention to the adjustment stroke. Be sure to test before operating. When the upper die of the press brake descends to the bottom, there must be a gap of plate thickness. Otherwise, it will cause damage to the mold and the press brake. The stroke adjustment also has electric quick adjustment and manual fine adjustment.

For the selection of bending notches, 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.

Step on the foot switch to start bending. You can release it at any time.

What are the warnings when using press brake?

Before operating the press brake, check whether the motor, switch, circuit and grounding are normal and firm. Check that the control parts and buttons of the press brake are stuck in the correct position.

Check the firmness of the upper and lower molds that whether each positioning device meets the processing demands.

If the upper slide plate and each positioning axis are not at the origin, run the return-to-origin program.

After the press brake is started, run idling for 1 to 2 minutes, and move on the skateboard 2 to 3 times at full stroke. Troubleshoot the malfunction until press brake is normal.

The operator should be in uniform command, cooperating closely with the feeding and suppressing operator.

Learn more about press brake can know the operation of press brake and the warnings of press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. is the leading manufacturer and exporter in China. It is wise of you to choose as your partner.

An efficient press brake is fundamental to avoiding damages and detecting failures. Keeping press brake clean and tidy is simple but important. It should be done the daily, weekly, monthly, and yearly.

• Why does press brake leak oil?

• What should you do for oil of press brake?

• What is the role of oil of press brake?

Why does press brake leak oil?

The sealing ring is not suitable for the conditions of using press brake. The O-shaped rubber seals often used in press brake must be selected according to the operating conditions and working conditions. Under oil lubrication conditions, the hardness of the oil-resistant rubber O-ring seal can be low hardness when the oil pressure is less than 2.9MPa. When the oil pressure is 2.9 to 4.9MPa, medium hardness should be selected. When the oil pressure is 4.9 to 7.8MPa, select high hardness.

There is no design seal or unreasonable seal structure. The screw hole on the body of the press brake is designed as a through hole with no sealing measure. The press brake cover is not designed with a gasket. The clearance between the shaft and the body hole is too large. The interference between the sealing ring and the shaft does not meet the requirements. The design of sealing groove is unreasonable.

Oil leakage can be caused by casting defects and parts damage. The castings of the press brake have defects such as blisters, pores, cracks, and loose tissues. When the oil pipes and pipe joints of the press brake are made of plastic or oil-resistant rubber, the materials will age to become hard and brittle after long-term use. The moving parts will lose the sealing performance due to friction and wear. If the gap between the shaft and the shaft hole increases, it will also cause oil leakage.

What should you do for oil of press brake?

Before maintaining or cleaning, the upper mold should be aligned with the lower mold. Shut down until the work is completed. If you need to start press brake, select the manual mode to ensure safety.

Check the oil level of the oil tank every week, even after the hydraulic system is repaired. If the oil level is lower, add hydraulic oil. The oil should be changed after 2000 hours of operating new press brake. Afterwards, the oil should be changed after 4000 to 6000 hours of operating press brake. The oil tank should be cleaned every time before changing the oil. The oil temperature of the press brake should be between 35℃ and 60℃ that is not exceed 70℃. Otherwise, it will cause deterioration and damage of the oil quality and accessories.

The filter of press brake should be replaced or thoroughly cleaned every time if the oil is changed. If the press brake has filter abnormalities such as unclean oil, the filter should be replaced. The air filter on the fuel tank should be inspected and cleaned every 3 months and replace every year.

After using the new press brake for one month, check whether the bending of each oil pipe is deformed. After two months of use, all fittings should be tightened.

What is the role of oil of press brake?

The oil of the press brake plays the role of transmission, wear resistance, system lubrication, anti-corrosion, rust prevention, and cooling in the hydraulic system. It belongs to the industrial hydraulic system. The hydraulic oil itself is constantly changing in use. However, it is difficult to completely solve the problem of hydraulic oil pollution.

Serious oil pollution will directly affect the performance of the press brake. It will cause frequent failures of the brake system and shorten the lifespan of press brake.

The main reason is the particles in the dust. As far as hydraulic components are concerned, these solid particles entering the components will increase the wear of the sliding parts. In addition, it may block the orifice, the orifice in the hydraulic component, or the spool stuck, causing the hydraulic system to malfunction.

The mixing of water and air reduces the lubrication of hydraulic oil, accelerating the oxidation of hydraulic oil and producing cavitation corrosion.

Learn more about press brake can know the reasons for oil leakage of press brake and how to deal with oil of press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. can offer you better experience whether in terms of products or delivery.

Bending is a processing technique of deformation and forming after shaping. It is performed industrially with press brakes. Press brake can perform rectilinear and parallel folds on pieces of medium-large dimension. The minimum radius relies on the thickness and type of material to be bent.

• Why we use press brake?

• How does press brake work?

• What are the uses of press brake?

Why we use press brake?

Press brake uses the electro-hydraulic servo system to control the two-cylinder synchronization. Press brake cooperates with the international standard grating ruler to form a fully closed-loop control. The synchronization has high accuracy and high level of the bending and repeat accuracy.

Press brake can be equipped with hydraulic upper mold automatic clamp, quick clamp, or slot type lower mold to reduce the labor and improve efficiency.

Press brake is equipped with high-quality linear guides and ball screws to ensure the accuracy.

Press brake has flexible operation mode, not only solving the processing of ultra-long plates by dual-machine linkage, but also processing short parts by single-machine operation. Press brake improves the utilization rate and reduces energy consumption.

The frame of press brake is welded with steel, ensuring high rigidity and machining accuracy.

How does press brake work?

To avoid cracks on the radius, it is essential that the press brake is carried out orthogonally to the rolling direction.

The press brakes are controlled by mechanical systems, a crank connecting rod system, and hydraulic pistons. Press brake can be operated by manually or computer, called CNC press brake.

The metal sheet is deformed by a bending force of press brake which necessarily exceeds the limit that the elasticity of the material imposes.

Also, the press brakes are equipped with a punch mounted on the movable part. This part of press brake is composed of a die and a blank holder piston with the same functions and characteristics of a mold for a press.

Press brakes contain a work table, a clamping plate, and supporters. The worktable consists of a base and a pressure plate, which is attached to the supporters. As working with a press brake, adjust the bending angle and dimensions continually.

What are the uses of press brake?

The forming of press brake greatly depends on operator’s skill. Therefore, varying levels of quality and productivity are to be achieved by two different operators.

Press brake is available for bending sheet metal. The sheet metal will play a important role in the manufacturing industry. These sheet metals processed by press brake are used in home appliances, vehicles, heavy equipment.

Before the right sheet metals are formed, press brakes should first consider the right die design to produce the right sheet metal. Press brakes are used in different forming works with the right die design like V dies, rotary bending dies, acute angle dies, and radius dies.

In a mechanical press brake, power is added to a flywheel with an electric motor. A clutch matches the flywheel to power a crank mechanism moving vertically. Accuracy and speed are two advantages of the mechanical press brake. Hydraulic press brake operates by means of two synchronized hydraulic cylinders on the C-frames moving the upper beam.

Learn more about press brake can know the working principle of press brake and the uses of press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. can do a favor for you if you have any doubts.

The shearing machine cuts sheet metal, plates, bars, and tubing of various cross-section into pieces by subjecting to shear force. It typically uses a punch and a die, which may be of any shape that is similar to a pair of scissors. Both the shearing machine and the laser cutting machine can shear the plate.

• What is the difference between shearing machine and laser cutting machine?

• What is the difference between gate-type and swing-type plate shearing machine?

• Which shearing machine can be viewed as high quality?

What is the difference between shearing machine and laser cutting machine?

Laser cutting machine is a piece of blanking equipment, which can cut boards of any shape, including straight, line and curve, holes and complex geometric figures. The laser cutting machine uses a focused high-power density laser beam to irradiate the workpiece to quickly melt, vaporize, ablate or reach the ignition point of the irradiated material. At the same time, the molten material is blown away by the coaxial high-speed airflow of the beam to cut workpiece. The incision of laser cutting machine is high but small without burrs. The cutting speed is based on the thickness of the steel and the power of the laser.

Shearing machine is a straight-line machine, which is mainly used to cut the straight edge of various sizes of metal plates. Although shearing machines are also blanking equipment, they perform simple shape cutting. Shearing machine is widely used in various industrial sectors such as steel rolling, automobiles, ships, tractors, bridges, airplanes, electrical appliances, instruments, boilers, and pressure vessels. The steel plate cut by the shearing machine has low degree, large cut and high roughness with burrs at a slow cutting speed. The cutting quality decreases more according to the thickness of the material.

What is the difference between guillotine and swing-type plate shearing machine?

The guillotine shearing machine is used in industries such as automobiles, tractors, rolling stock, ships, motors, and instruments. It is also suitable for stretching work of various high-strength alloy plates. The guillotine shearing machine adopts an integral welded-frame structure and has vibration treatment so that is has good rigidity, high precision and good precision retention. A three-point supporting shaft rolling guide rail is adopted that the upper tool holder rolls between the rolling guide rails without gap. The lifespan is determined by turning the hand wheel. The movable blade base and the four-edged long blade are convenient to adjust the uniformity of the blade gap, improving the cutting quality and extending the lifespan. The guillotine shearing machine uses tandem cylinder synchronization system with even force. By adjusting the flow rate of the tandem cylinders, the shearing angle can be easily to meet the needs of different shear plate thicknesses.

The swing-type plate shearing machine is used in the stretching, bending, extrusion, forming and other processes of metal sheets in the power industry and aviation industries. Compared with guillotine shearing machine, swing-type plate shearing machine mostly adopts oblique-blade, which is widely used due to simple structure, low failure rate, and high efficiency. As the tool holder rotates, the shearing angle and gap will change.

Which shearing machine can be viewed as high quality?

Relying on the guide rail, the shearing machine can realize intelligent movement. The cutting length and thickness are not limited by the size of the shearing machine. Even the guide rail can be lengthened as needed.

The shearing machine replaces manual feeding and adopts heavy-duty robots, which can load 5 tons at a time. It saves manpower and effectively avoids safety accidents.

The shearing machine has zero loss during the cutting process. The feeding platform can automatically flip the steel plate. In addition to eliminating manual operations, it also avoids the material waste caused by the long steel plate. During the operation, no pollutants are generated.

Learn more about shearing machine can know the difference between shearing machine and the laser cutting machine. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. can help you know more about the CNC machines.

Building the Wire Bending Machine. I continued with preparing the other parts, for which I used MDF and plywood. So once I took all dimensions from the 3D model, using a circular saw, I cut the pieces to size. I used 8 mm tick MDF and 18 mm tick plywood. Once I got them ready I started with the assembly.

Application And Development Of CNC Press Brake; CNC press brake realizes bending function by controlling ram stroke and back gauge. When using a CNC press brake, you only need to input the number of the pieces required for bending as well as the bending angle for each step, the CNC press brake will finish bending according to the steps you just set in the controller.

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