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A press brake is a device used for sheet metal bending. It is widely used in the field of sheet metal processing. A plate bending machine is an advanced sheet metal processing equipment. It used to automatically bend various metal sheets. The bending center combines the functions of many bending machines. It can not only perform precise and complex bending operations. But also improve the production efficiency of the factory. Compared with ordinary bending machines, the CNC press brakes machine can be transformed and controlled by a CNC system. With a higher degree of automation, more precise production effects, and higher production efficiency.
The slide is the moving part of the CNC press brake machine on which the punch is mounted. It moves in the vertical direction (Y-axis) to provide the force required to bend the metal.
Controlled by a numerical control system, the ram is able to reach a specific position precisely to meet the requirements of different bending operations. In addition, the slide is equipped with independent Y1 and Y2 axes, which regulate the possible imbalance of the machine’s main slide (in the case of a servo hydraulic press brake, they correspond to the different strokes that can be executed by the hydraulic cylinders).
The Bench is the stationary part of the machine located underneath the crossbeam, where the molds are mounted. For sheet metal press brakes with a width of 2 m (6 ft) and above, the table is usually equipped with a deflection compensation system to counteract the deformation of the beam during the process.
There are many different versions of deflection compensation systems used by different manufacturers, based on different design philosophies, or for specific types and series of machines. Among these, hydraulic deflection compensation systems can achieve very good results. In this system, several high-pressure, low-flow hydraulic cylinders are mounted inside the machine table, and during the pressing process they generate a reaction force from below, thus compensating for the deflection of the frame.
Lateral frames are also known as side plates or rack shoulders and they determine the width of the machine frame. Lateral frames may vary from one type of CNC press brake machines to another. For example, on stainless steel press brake bending machines with synchronized hydraulics, there is usually a gap between the side frames, called a “throat”, so that plates wider than the distance between the shoulders or columns can be fed into the machine frame for processing.
A punch is a tool that replicates the desired bending profile and is in direct contact with the sheet metal. Punches come in a variety of shapes and sizes to accommodate different bending angles and materials.
For example, for workpieces that require a small angle of bend, a sharp-edged punch will be used; whereas for thicker metal materials, a stronger, larger punch may be required.
A die is the stationary counterpart of a punch that provides the shape to be formed for metal bending. It can be a simple V-die for basic bending or a more complex shape for specific contours.
V-dies are the most common type, allowing different angles and sizes of bends to be made by varying the angle and width of the V-groove, while complex shaped dies are used to produce workpieces with special structures.
The purpose of the clamping system is to securely hold the sheet metal during the bending process, ensuring accuracy and preventing the sheet from slipping.
It can adjust the clamping force according to the different thickness and shape of the plate, so that the plate will always maintain a stable position in the bending, so as to ensure that each bending can achieve the desired accuracy.
The CNC system is the core part of the press brake bending machines. It is an operator interface device that allows the operator to program machine motion sequences through direct parameter/program entry or offline programs (usually created by the technical department based on instructions from production management).
Typically, CNCs offer a variety of setup/input options, such as numeric or graphic modes. Numeric mode requires the operator to enter the data for the desired part directly into the appropriate fields on the program screen, while graphic mode is easier to use, especially for the non-specialized operator, and requires the use of 2D or 3D graphics to show the shape of the desired end product as well as the bending sequence.
Sheet Metal Supports are usually optional. If the supports are fixed and slide on the guides, their function is simply to support heavy and/or bulky workpieces during the machining process.
In the case of movable (follower) supports, they are used to “accompany” or follow the movement of the plate as it oscillates as a result of bending and forming. They work whether the sheet is moving up or down.
A rear backgauge is used to ensure that the bend is correctly positioned on the part to be machined. It usually consists of a crossbeam on which two or more “stop fingers” (backstop blocks) are mounted.
These stop fingers are able to move laterally to find the correct position, thus ensuring that each bend is precisely positioned in the specified position on the sheet.
A automatic press brake is a relatively inexpensive and easy-to-use piece of industrial equipment. Instead of outsourcing the bending process, manufacturers can install a press brake in their own factory.
This not only saves companies manufacturing costs, but also reduces production time and increases production flexibility and responsiveness.
Modern servo/ CNC press brakes are equipped with a wide range of safety measures to ensure operator safety. The sides of the machine are equipped with safety curtains that keep the operator’s arms and hands away from the danger zone.
It is also equipped with devices such as laser sensors to avoid possible accidents at the workplace.
It is common practice to integrate computerized numerical control (CNC) systems in sheet metal press brake bending machines. This automates the entire process of operating the compact design press brake.
As a result, manufacturers using CNC press brakes can achieve faster production setups, significantly increase productivity, and shorten the production cycle of their products.
Press brakes reduce the need for manual labor. The automated setup means that the operator only needs to supervise the process and only intervene when loading and unloading workpieces.
This not only reduces the operator’s labor intensity, but also reduces errors and accidents caused by manual fatigue.
Due to the high production speeds and reduced need for labor, the cost of the entire operation is reduced. This also leads to a reduction in the unit cost of manufacturing parts, increasing the competitiveness and profitability of the company’s products.
The light steel keel, curtain wall structure, door and window frames, etc. In the construction industry need to be processed by sheet metal bending. The bending brake for sale can efficiently process large steel materials to meet the complex design requirements of building steel structures.
Press Brake in Electrical Equipment and Electronic Cabinet Industry
In the manufacturing of electrical equipment housings. Such as distribution cabinets and server cabinets. The bending press machine can ensure precise bending angles and dimensional consistency. And can quickly complete mass production.
Press Brake for sale in Aerospace Industry
The aerospace industry has extremely high precision requirements. And many cabin parts and metal structural parts need to be processed by precision bending. The high-precision control and complex bending capabilities of the press brakes meet the special needs of aerospace parts.
Press Brake in Medical Equipment Industry
The shell, internal bracket and other metal parts of medical equipment require very high precision and surface treatment. The bending center can provide the required precision. And is suitable for small-batch customized production.
Hydraulic Press Brake in Commercial Kitchen Equipment Industry
Stainless steel products are widely used in kitchen equipment. Such as stoves, workbenches, range hoods, etc. The press brakes can quickly produce the shells and components of various stainless steel equipment, improving production efficiency and quality.
How to Choose the Right Press Brake for Your Needs?
Choosing the right high precision press brake for a specific need requires careful consideration of several technical factors. Making the right choice ensures optimum productivity and part quality while avoiding unnecessary investment.
Tonnage requirements are probably the most basic consideration. It refers to the force required to bend the material, which depends on the thickness, type and bending length of the material.
A basic calculation is to multiply the square of the material thickness by the bending length and the material factor, although it is recommended to refer to material-specific tonnage charts.
Bench length is another critical factor. The machine must have enough room to accommodate the longest parts with a margin. For the occasional need to work with larger parts, a twin inline press brake can be synchronized to handle unusually long workpieces.
The control system has a significant impact on availability and efficiency:
Manual control: for simple, small batch jobs.
CNC 2-axis control: controls the backstop position and slide depth.
CNC multi-axis control: manages additional axes to accomplish complex bending sequences.
Tooling compatibility should not be overlooked. Ensure that the machine can be adapted to the tooling system that suits the production needs, whether it is a standard European or American tooling, or a dedicated system.
Finally, assess production volume requirements and future growth plans to ensure that the equipment invested in will remain suitable as the business grows. Considering the possible growth of the business, it is necessary to choose a eco-friendly press brake with a certain degree of scalability.
Hanchine’s full servo CNC multi-edge press brakes has been leading the trend of bending technology development, using highly dynamic servo motors, high-speed and fast automatic tool changing systems, and traceless folding technology. It has high flexibility, high precision, high speed, high repeatability.
The transmission system of the all-electric servo press brakes is simple. The components such as oil cylinders, pumps, valves, seals, and oil pipes are eliminated. There is basically no maintenance cost and only regular lubrication is required.
The transmission structure of the all-electric servo press brakes has a fast response and high working speed. It adopts the technology of direct drive of servo motor components with fewer components, which fundamentally solves the problem of slow transmission speed.
The all-electric servo press brakes adopts the transmission structure of the servo motor directly driving the screw rod, which has fast response speed and high transmission accuracy. It also adds a magnetic scale to measure the slider stroke and form a full closed-loop control with the system, and its positioning accuracy is ±0.01mm.
Main features of hydraulic press brake machine:
● EtherCAT bus control mode is adopted, with strong anti-interference ability
● Direct programming is supported, and the bending data of each step is input in the form
● Arc bending is supported
● All-electric servo control
● Bending compensation function is supported
● Two-dimensional programming function is supported
