Servo Sheet Metal Bending Machine- China Manufacturers Suppliers Factory

Nowadays, press brakes are offered in a broad range of capacities from portable models to custom machines. With advanced technology, press brakes are developing fast, such as CNC sheet supports, programmable tooling, adaptive bending, and user interface technologies.

• How to grasp the size of bending for press brake?

• How should you use press brake?

• How to adjust the bending angle of press brake?

How to grasp the size of bending for press brake?

The main purpose of using a press brake is to grasp the size of the bending.

Avoid using a press brake to bend the edge or large-angle alignment.

Preliminary inspection is carried out before formal processing. Cyclic inspection is carried out during the use of press brake.

In order to avoid accumulative errors, the unfolded size must be measured every time when material is added.

Choose a good processing method and a good technical preparation method to simplify the processing of press brake.

The press brake selects the appropriate machine according to the accuracy requirements of the processed products.

Do not choose tools that have decentraction. Make sure that the tip of the upper die of press brake is on the same straight line before processing.

For products whose edges must be bent by a press brake, the front bending angle must be less than 90 degrees.

Determine the accuracy of the measuring instrument before processing.

How should you use press brake?

Strictly abide by the safe operation regulations of press brake. The user must wear labor protection. Before starting, carefully check the motor, switch, circuit, grounding, and the control parts and buttons of the press brake.

Run press brake idling for 1 to 2 minutes and move on the slide 2 to 3 times at full stroke. If there is anything abnormal, stop immediately to troubleshoot the malfunction.

The sheet material must be compacted when bending to prevent hurting people during bending. The power supply must be cut off when adjusting the sheet metal die. When changing the opening of the lower mold, no material is allowed to come into contact with the lower mold. When press brake works, no one is allowed to stand behind the press brake.

It is forbidden to use press brake molds to fold over-thick iron plates or hardened steel plates.

To close the press brake, place a wooden block on the lower die under the cylinders on both sides and lower the upper slide plate onto the wooden block.

How to adjust the bending angle of press brake?

Before using the press brake to bend the material, you need to adjust its various angles, including the bending force, the distance of the back gauge, the upper limit of the slider, the speed of the slider, and the adjustment of the upper and lower mold gaps.

The adjustment of the angle of the press brake is mainly to calculate the value of the bending force and indicated pressure according to the calculation formula. Then, adjust the handwheel of the overflow valve to generate the force which is slightly larger than the force of the folded plate.

The adjustment of the backgauge distance of the press brake needs to position in the length direction when bending the sheet. The button on the front button box controls the motor adjustment, whose value can be from the revolution table on the button box. There is a handwheel for fine adjustment.

The adjustment of the upper limit of the slider of the press brake needs to be realized by adjusting the position of the striker. The rising slider can stay at the required center position, which can shorten the stroke distance of the slider. It reduces the working cycle time and increases productivity.

The adjustment of the gap between the upper and lower molds in the press brake is completed by the button on the button box. Operate in the direction indicated by the press brake label. The initial adjustment gap should be greater than the thickness of the plate.

Learn more about press brake can know how to use press brake and how to adjust the bending angle of press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. can offer you the best purchasing experience. Please contact us!

CNC press brake is mainly used to realize the bending of metal cabinets, box shells, U-shaped beams and rectangles of various geometric shapes. The plates can be stretched, grooved, punched, and corrugated by the CNC press brake. The CNC press brake processing has the advantages of high bending straightness without marks, peeling or wrinkles.

• What is the difference between CNC press brake and electro-hydraulic press brake?

• How to choose a suitable CNC press brake?

• How to improve the lifespan of CNC press brake?

What is the difference between CNC press brake and electro-hydraulic press brake?

The CNC press brake uses a torsion axis to link the left and right swing rods to form a torsion axis, forcing a synchronization mechanism to move up and down the cylinders on both sides. It is a mechanical forced synchronization method. The parallelism of the slider cannot be automatically checked and adjusted.

The electro-hydraulic press brake installs a magnetic scale on the slider and the wall plate. The numerical control system can analyze the synchronization of the two sides of the slide through the information feedback from the magnetic scale at any time. If something wrong, the numerical control system will be adjusted by a proportional electro-hydraulic servo valve to synchronize the strokes on both sides of the slider. They constitute the feedback closed-loop control of the electro-hydraulic press brake.

The parallelism of the slide block determines the angle of the workpiece. The CNC press brake keeps the slide block synchronized by the machine. There is no real-time error feedback. However, its eccentric load capacity is poor.

The electro-hydraulic press brake is the system through the proportional electro-hydraulic valve group to control the slider synchronization. The magnetic scale reports real-time error.

The CNC press brake does not have a control system and V-axis compensation. You can only stake out and do trial bending first.

The electro-hydraulic press brake is controlled by a professional numerical control system with V-axis compensation. There is a simulated bending function that no stakeout is required.

How to choose a suitable CNC press brake?

When purchasing CNC press brake, consider the production of parts. It must be able to complete the processing tasks. The workbench must be the shortest and the tonnage can be the smallest. The material grade and the maximum processing thickness and length should be paid attention to.

The shorter workbench, the fewer shim adjustments to produce qualified parts. Reduced shim adjustment shortens preparation time.

When free bending is used in CNC press brake, the bending radius is 0.156 times the opening distance of the die. The opening distance of the die should be 8 times the thickness of the metal material. If the bending radius of CNC press brake is almost as small as the material thickness, a bottomed die must be formed.

In order to choose the lowest tonnage specification, it is best to plan for a bending radius larger than the thickness of the material, using the free bending method.

The accuracy is the most important factor affecting your choice. It determines whether you need to consider a CNC or a manual press brake. If the bending accuracy requires within 1° and cannot be changed, you must focus on the CNC press brake.

How to improve the lifespan of CNC press brake?

Create a uniformly distributed machining allowance for each type of bending in each bending process. The main CNC press brake mold should be as close as possible to the final shape of the mold in each process.

The evenly distributed machining allowance of the CNC press brake mold ensures a constant and high productivity and a safe bending process. When the angle is constant, the bending speed and feed rate can also be kept constant at a high level.

Continuous cutting of CNC press brake should be maintained for as long as possible during the bending process. Otherwise, it will increase the thermal stress and thermal fatigue on the cutting edge. A uniform and high temperature in the cutting area is more beneficial.

Learn more about CNC press brake can know the difference between CNC press brake and mechanical press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. is glad to solve your problems about the CNC machines. We produce high-quality products with reasonable price.

For simple cutoff of metal parts, the shearing machine is a very tempting option, which is fast, easy and cheap. The shearing machine involves a moving blade applying pressure and pushes a workpiece up against a fixed blade.

• What are the specifications you should know about the shearing machine?

• How many parts does shearing machine contain?

• How to install shearing machine?

What are the specifications you should know about the shearing machine?

When purchasing metal shearing machine, take the required dimensions fitted various workpieces into account.

Sheet thickness is the sheet or web thickness that can be sheared. Sheet length is the largest dimension of working distance from right to left that can be cut. Sheet depth is the distance from the centerline of the ram to the back frame in a gap frame.

Operating a shearing machine requires strict adherence to safety procedures. Operators can activate the shearing machine using several methods. Operators can control manually by a footswitch, pendant, or push-button. The automatic shearing machine automatically performs without intervention. The shearing machine changes tools and parameters in a pre-programmed manner, such as speed or applied load.

Shearing machines require periodic maintenance. The blade performs sharpening on a regular basis so that shears do not yield poor quality cuts. The angle of the cutting edge and the finish of the grind play important roles in affecting performance and lifespan.

How many parts does shearing machine contain?

The shearing machine is composed of a frame, a pressing mechanism, a blade gap adjustment device, a knife holder, and a hydraulic system.

The rack adopts a combined welding structure with good rigidity, including left and right columns, front wall panels, workbenches, and fuel tanks.

The pressing mechanism is composed of a set of material pressing feet installed at the bottom of the frame beam. After the pressurized oil gets into, the presser foot plunger presses down the steel plate. The presser foot does not reset depending on the spring force until the shearing machine stops.

The adjustment of the upper and lower cutting tool gap is realized by rotating the blade gap adjustment device handle to drive the two pinion gears on the shaft. Rotate the sleeve on the supporting shaft.

The knife holder of the shearing machine is an enclosed-welded structure, having high torsion resistance and good rigidity. It is connected to the frame by two ends of the support shaft, equipped with a shearing and return cylinder.

How to install shearing machine?

The shearing machine must be installed on a solid concrete foundation and fastened with anchor bolts. Install it by a secondary irrigation installation method. Place a level it on the work table for vertical and horizontal correction.

The left and back sides are higher than the right and front sides within the allowable range. All parts of the shearing machine must be inspected comprehensively. Add lubricating oil according to the lubrication diagram. Adjust the tightness of the V-belt and the spring tightness of the pressure plate. Adjust the tightness of the brake belt.

When adjusting the gap of the cutting edge, rotate the flywheel to bring the upper knife holder to the bottom dead center. Loosen the screw fixed the blade. Determine the gap value according to the thickness of the plate. Tighten gradually the bolts and nuts to adjust to the required gap. Finally, tighten all the bolts of the fixed blade of the worktable.

Learn more about shearing machine can know how to install shearing machine and the specifications of shearing machine. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. is a leading manufacturer and exporter of CNC machines. Glad to have you visit our factory.

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.

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