Who To Choose? Comprehensive Comparison And Analysis Of Hydraulic And Electric Press Brake
Today, the use of press brakes in metal working is essential to the process of forming metal sheets into the desired shape. Choosing the right machine can be confusing due to the wide variety of press brake available on the market, and the most common press brakes in industry are hydraulic synchronous press brakes and electric press brakes. Hydraulic press brake is a kind of widely used machinery with powerful power and strong versatility. Electric press brakes are a relatively new technology that has grown in popularity in recent years due to their energy efficiency and automation capabilities.
These two types of press brakes have their own unique characteristics, there are significant and obvious differences in structure, working principle, performance, etc., but there is one thing, they are designed to achieve the same goal - that is, bending materials. Therefore, the differences in design make them suitable for use in different industrial manufacturing areas, and choosing the right brake depends on your application needs, budget and output.
In the previous article, we introduced the respective characteristics of hydraulic and electric press brake , and today this article will provide a comprehensive comparison and analysis of hydraulic and electric press brakes to help you choose the best machine for your application.
Here is a detailed comparison of the two devices:
1. Differences in design structure
Hydraulic press brakes and electric press brakes are different in design structure.
Hydraulic press brake is mainly composed of workbench, hydraulic system, control system, frame, etc. The machine is equipped with hydraulic system, using fluid pressure to provide power for the press brake. The hydraulic system includes the main cylinder, oil tank, oil pump, reversing valve, pressure valve and other hydraulic components, and controls the bending process by applying a force to the upper ram through the hydraulic cylinder. These machines are designed as a set of parallel hydraulic cylinders, which work together to apply pressure to the material being bent, such as the pressure generated by pumping hydraulic oil to achieve the up and down movement of the ram, thereby completing the bending of the sheet metal. Hydraulic press brake has a rigid structure that can absorb the stress during bending.
While electric press brakes have a compact design because they are driven by an electric motor, electric press brakes get their name because they are equipped with an electric motor.
The machine is mainly composed of ram, workbench, motor transmission mechanism, cantilever device, electronic control system, etc. The motor drives a series of gear boxes, and then transmits the power to the bending ram, and drives the ram and the workbench up and down through the gear, reducer and other transmission mechanisms. On the other hand, the electric press brake adopts ball screw and linear guide, with high positioning accuracy, the motor provides a steady stream of power for the machine, and the ball screw and linear guide system regulates the positioning of the RAM.
It has been said that the electric press is designed for high-speed operation, which also makes it superior to hydraulic synchronous press brakes in terms of speed. Because electric press brakes do not require hydraulic components, they are usually smaller and can be placed closer to the wall.
2. Differences in working principles
The working principle of hydraulic press brake and electric press brake is also different.
Hydraulic press brake uses hydraulic power to produce bending force, mainly through the hydraulic cylinder hydraulic pump into the cylinder, hydraulic pump produces a hydraulic pressure, the pressure flows into the hydraulic cylinder, and then the hydraulic cylinder extends the piston rod, so that the cylinder piston moves upward, the piston rod presses on the upper ram to produce bending force.
Thus, the slider is pushed down and the table is pushed up to achieve the bending of the plate. The speed and pressure of the hydraulic pump are adjustable, and the bending process can be accurately controlled.
The electric press brake is composed of a transmission mechanism through the motor, which mainly uses the electric motor to drive the bending slider and a series of gear boxes, so that the drive ram and the workbench move up and down to achieve the bending of the metal plate. The electric press brake is controlled by a CNC or NC controller, which not only adjusts the position of the bending slider and controls the speed of the motor, but is also allowed to precisely control the bending process.
However, compared with the two machines, the working principle of the hydraulic press brake will be more stable and reliable.
3. Differences in machine performance
Both hydraulic press brakes and electric press brakes have their own unique performance characteristics.
Hydraulic press brake has the following characteristics:
▲ High bending accuracy: the hydraulic press brake can achieve higher bending accuracy through control
▲ Large bending force: hydraulic press brake has strong pressure and torque, and can process thicker metal sheets.
▲ Fast bending speed: hydraulic direct drive, adjustable speed, fast bending speed, large production.
▲ Good stability: the hydraulic system can adjust the pressure, can better control the bending Angle and accuracy, and the bending effect is stable and reliable.
Electric press brake has the following characteristics:
● Simple and convenient operation: the electric press brake is simple to operate, does not require professional personnel, and has low investment cost.
● Automation: Electric press brakes can be programmed to automatically perform multiple bends, reducing the need for manual labor.
● Low noise: Since no hydraulic oil is pumped, electric press brakes operate more quietly than hydraulic press brakes.
● Easy maintenance: the transmission mechanism is relatively simple, the moving parts are less than the hydraulic press brake, and the maintenance is convenient.
● Energy saving: The electric press brake has low energy consumption and uses electricity only when the ram is moving.
● Cost: Electric press brakes are generally cheaper than hydraulic press brakes and are mainly used in small-scale production.
In general, the two have their own characteristics, such as the control of bending Angle, machining workpiece speed and other performance is similar, but mainly in these characteristics produced differences:
① Cost
In any industrial establishment, the cost of machinery is a factor to be considered.
Hydraulic synchronous press brakes are more expensive than electric press brakes, and this additional cost is related to its hydraulic system. Because hydraulic systems include hydraulic pumps, hydraulic cylinders, and valves that control hydraulic levels, hydraulic systems are more complex than electrical systems. Electric press brakes, on the other hand, are cheaper because of their simpler design.
② Maintenance
Maintenance of machinery and equipment is an important factor in its life cycle.
Hydraulic synchronous press brakes require more maintenance than electric press brakes, because the hydraulic system needs regular oil changes, and the cylinder seals must be checked for wear in order to better use the machine. But this maintenance comes at a cost, and at the same time, it is necessary for the life of the machine.
Electric press brakes, on the other hand, require less maintenance because they have no hydraulic system, which eliminates the need for oil changes and seal checks, thus reducing costs.
③ Precision
Precision is an important aspect of any metalworking operation, and press brakes are no exception.
Hydraulic synchronous press brakes offer a high level of accuracy as the hydraulic system adjusts the Angle and depth of the bend while machining the material, and proportional valves ensure that the position of the RAM is precisely controlled for precise bending machining.
Electric press brakes, on the other hand, are more sophisticated machines, they offer a high level of automated accuracy, and the ball screw and linear guide systems that adjust RAM positioning are accurate and reliable, resulting in very accurate bending machining.
There are also some additional performance features, such as hydraulic press brakes with high bending forces for heavy-duty bending applications, and hydraulic power systems that can generate large forces, allowing them to bend thick and hard materials.
Hydraulic press brakes also have a fast manufacturing speed, which reduces cycle time.
The electric press brake is suitable for precision bending applications, the machine can achieve high positioning accuracy, can be more perfect machining and manufacturing workpiece, because they do not use hydraulic oil, so more environmentally friendly, easy to clean.
4. Different options for application requirements
The choice of hydraulic and electric press brakes depends on your practical application needs.
Due to their high bending forces, hydraulic press brakes are suitable for heavy-duty applications where the hydraulic system provides the power needed to bend thick and heavy metal sheets, often used in industries that require precision and speed. If you need to bend thick and hard materials, hydraulic press brakes will be a better choice.
On the other hand, electric press brakes are ideal for lightweight applications and are perfect for situations where high bending power is not required. If you need to perform precision bending, an electric press brake would be a better choice. At the same time, they are also universal and suitable for small and medium-sized operations that do not require hydraulic power. The electric press brake can perform a wide range of bending tasks, it is simple, environmentally friendly, low noise, easy to maintain, and is ideal for placing in a small footprint.
Conclusion:
In short, the choice of hydraulic and electric brakes depends on your application requirements. Both types of machines have their own unique features, and consider your business needs, production capacity and energy efficiency goals when deciding which type of press brake to use.
If you are using thicker materials, need higher tonnage or precise control of the bending process, hydraulic press brake may be a better choice. On the other hand, if you prefer a machine with low energy consumption, high automation and low noise, an electric press brake may be a better choice.
Hydraulic press brakes generally have a higher initial cost compared to electric press brakes. However, well-maintained hydraulic press brakes can save money in the long run because they last longer.
After knowing this, you can visit our website, if you need to learn more about CNC press brake machine knowledge or buy a machine, you can also consult our sales staff, they can recommend you the best CNC press brake for you.
