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How many types of press brakes are there?
What are the types of bending in press brake?
How to choose press brake?
The structural features and working principle of the mechanical press brake are the same as those of the mechanical press. The crank connecting rod mechanism is adopted to convert the rotating motion of the motor into the reciprocating motion of the slider. The mechanical press brake has a huge structure with high cost, which is often used for bending small and medium-sized parts. The advantage of the mechanical press brake is that the sliding block is parallel to the worktable, which has high precision and can withstand eccentric loads.
The hydraulic press brake is directly driven by hydraulic pressure. The hydraulic system can apply full pressure to the metal plate. If hydraulic press brake is overload, it can protect automatically. When bending sheet metal parts, the oil in the hydraulic cushion can be squeezed out under pressure. The upper die does a little retraction movement relative to the slider.
Pneumatic press brake uses compressed air as the power source. It is generally used for bending small plates. After the pneumatic press brake adopts CNC, it can save adjustment time.
There are three types of bending in press brakes that are commonly used. Each requires different strategies in press brake operation.
Coining means the process of pressing coins to get the images, numbers, and lettering on a coin. The workpiece is put under the tonnage of the press brake. It requires each bend to be exactly the same. The coining method requires the largest amount of tonnage in a press brake, usually 3 to 5 times that of the other bending methods.
Bottom bending doesn’t require as much tonnage as the coining method but does require more tonnage than the air-bending method. The metal is pushed down into the V-die to make a bend. There is a slight spring back. Bottom Bending is common on mechanical press brakes.
Air Bending is the most common form of press brake forming. It requires far less tonnage. A simple die can realize multiple angles with less tooling. It is much cheaper. There is less contact with the material being formed.
Determine the specifications and models of the press brake according to processing dimensions. In addition, you also consider the needs after the expansion of production.
After you have determined the specifications and models, you can contact the press brake manufacturer. The models produced by each manufacturer are very different. It is important to choose a proper press brake. Choose some manufacturers to compare with each other to know more about the quality, stability and after-sales service of the press brake.
The accuracy of the press brake needs to be the focus of selection. The accuracy standards of different machines have differences due to different press brakes. Some processing fields attach great importance to the processing effect of the plate.
Pay attention to the selection of molds. The loss of molds in the process of bending the plate is more serious.
Learn more about press brake can know the types of press brake and how to choose press brake. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. has a long history in manufacturing high-quality CNC machines.
The V groover machine is also known as score-folding, V-cutting, and back-scoring. V groover machining facilitates the bending or folding of various materials and forms a V-shaped cut along the surface. The cut along the fold line acts as a hinge, allowing to achieve 90-degree bends with relatively small bending radii.
What are the errors of V groover machine?
How to maintain V groover machine?
What should be considered when using V groover machine?
The V groover machine has large vibration. That’s because the two diamond cut-off wheels are deformed. The splint and distance ring are worn. The output shaft bearing is damaged. You can replace the same diamond cutting wheel, the splint, distance ring, and the bearing.
The V groover machine motor is overheated. The diamond cut-off wheels are too blunt or not parallel. The V groover machine is overload. Reduce the cutting speed and depth. Replace the special diamond cut-off wheels, the bearing or reassemble.
The motor is weak. It can be caused by the rotor or stator. The voltage is low. Another reason is that the brush is too short or the spring loses its elasticity. Check and replace the rotor, the stator, the brush and spring. Check whether the wire cross-sectional area, length, and connection are reliable.
If there is any noise of V groover machine, it may have damaged gear or bearing. The stator and rotor is failure. There is the chance that the brushes have poor contact. Check and replace the gear, the bearing, the rotor, the stator and the brush. Tighten the stator assembly fixing bolt.
Completely clean the V groover machine once every six months. Use a brush to remove the external dust and a professional detergent to clean the dusty places. It is necessary to apply engine oil to the guide rails to prevent mechanical damage. Put in a ventilated place to dry to avoid rust.
When V groover machine stops running, it needs to check whether there are loose screws of internal related parts.
Before starting the V groover machine, make sure that the bearings and other parts are reasonably smooth. The water temperature ranges from 40°C to 50°C. If necessary, anti-freezing solution is poured in winter.
Pay special attention to the maintenance of the V groover machine engine during normal use. The engine should not be overloaded.
Before starting the automatic V groover machine, check carefully whether the tool, nut and each screw are firm. If any, tighten in time!
Pay attention to the cutting direction when installing the tool. It is not allowed to reverse. The main tool turns clockwise.
Confirm whether the pneumatic device is turned on. Press the workpiece on the movable push table to close to the positioning plate. Keep your hands away from the knife edge.
When the V groover machine breaks down, the power supply should be cut off in time. A professional person should be sent to repair and adjust. It is forbidden to run the V groover machine until it is work.
Before processing the material, check whether there are iron nails, sand-rock joints, and others on the V groover machine. The stainless steel groover prevents damage to the tool joints and hurts people.
Cut off the power supply when cleaning, wiping lubricating oil, removing saw blades and cleaning chips.
The V groover machine must be operated, adjusted and maintained by professional personnel. Workers should wear earplugs, goggles and other protection supplies during operation.
The maintenance is carried out in accordance with the system.
Learn more something about V groover machine can know the errors of V groover machine and the warnings of V groover machine. LZK CNC Machine Tool(Anhui) Manufacturing Co., Ltd. is composed of well-trained and qualified mechanical operators and assembly skilled personnel. Our products adopt national standard.
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.
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?
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.
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.
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.