The main difference and main characteristics of electro-hydraulic servo press brake bending machine and torsion axis press brake bending machine

Reading Time: 5 minutes

Electro-hydraulic servo press brake bending machine is a very common industrial production equipment. Today, with the continuous development of science and technology, more and more equipments are combined with science and technology. Today I will talk to you about the related topics of electro-hydraulic servo press brake bending machine. What are the performances of the electro-hydraulic servo press brake bending machine during use? We should know what are the characteristics of electro-hydraulic servo press brake bending machine? Let’s take a closer look at “the description of the functional characteristics of the electro-hydraulic servo press brake bending machine and the introduction of common modification knowledge”.

Why can’t the torsion axis ordinary press brake bending machine be converted into an electro-hydraulic servo CNC press brake bending machine

Recently, many customers are asking, can a torsion shaft ordinary press brake bending machine be converted into an electro-hydraulic servo CNC press brake bending machine? Is it possible to achieve full CNC? Here, I will first summarize the opinions of our engineers and my master, and give opinions. It is not recommended that torsion axis press brake bending machines are not suitable for retrofitting electro-hydraulic servo CNC, and torsion axis servo press brake bending machines are enough for most customers to use, but the technology The above can be achieved, the following will give you a detailed introduction.

First of all, let’s first understand the difference between the torsion shaft press brake bending machine and the electro-hydraulic servo press brake bending machine. The torsion axis synchronous CNC press brake bending machine adopts the torsion axis to connect the left and right pendulum rods to form a torsion axis forced synchronization mechanism to keep the up and down movement of the oil cylinders on both sides synchronized. The hydraulic control system and the grating scale constitute a closed-loop control, which is independently controlled by the CNC. Feedback accurate data to ensure the accurate running precision of the slider. The torsion axis synchronous press brake bending machine adopts a mechanical synchronization method, while the electro-hydraulic synchronization is the synchronization method of the servo proportional valve.

First, the machining accuracy of the body of the torsion shaft cannot meet the accuracy requirements of the electro-hydraulic servo proportional valve. According to the machining standard of the electro-hydraulic servo press brake bending machine, the machining accuracy of the slider is 0.02mm. The positioning accuracy of the back gauge and the dead gauge of the slider is ±0.05mm, while the machining accuracy of the body slider of the torsion shaft is about 0.1mm.

Second, the effect of retrofitting electro-hydraulic servo CNC press brake bending machine to torsion axis synchronous press brake bending machine is actually not as good as torsion axis servo CNC press brake bending machine, and the latter is more economical. In essence, in terms of accuracy, electro-hydraulic servo and torsion axis servo. In fact, it is to wait for a precision level. Within 0.1mm, the speed is also about 280mm/s. Therefore, if the customer only considers the accuracy or speed, it is actually a more valuable and economical choice to choose to modify the torsion axis servo CNC. .

But what are the advantages of electro-hydraulic servo press brake bending machine compared with torsion axis servo press brake bending machine? First, the synchronization of electro-hydraulic servo is better than that of torsion axis servo, real-time monitoring and timely adjustment. Second, the electro-hydraulic servo function is more powerful, and the position control is better. Third, the electro-hydraulic servo is fully closed-loop control, with strong stability, operability and editing.

Third, from the perspective of cost, the cost of retrofitting electro-hydraulic servo to torsion axis press brake bending machine is very high. To retrofit torsional axis servo, proportional servo valve, grating ruler, electro-hydraulic servo numerical control system, and possibly precision back gauge must be added. At the same time, it is necessary to remove the balance shaft and hydraulic valve of the torsion axis press brake bending machine. The amount of engineering is too large and the labor cost is large, so it is better to buy an electro-hydraulic servo CNC press brake bending machine.

Fourth, from the actual modification experience, we have modified an ordinary Jinfangyuan press brake bending machine before. After modification, the proportional servo valve control response speed is slow, and the downward speed and rising speed of the oil cylinder are not significantly improved. The machine can only say that it can barely achieve the effect of the torsion axis servo, but the accuracy has not been greatly improved. At the same time, the machine has been modified for about 10 days, and the labor cost is high.

What kind of performance characteristics does the electro-hydraulic servo press brake bending machine have

The electro-hydraulic servo CNC press brake bending machine is a CNC system that adopts the electro-hydraulic CNC systems such as the Dutch DELEM56 and the Sibo DNC60. The side main cylinder synchronously adopts the German imported electro-hydraulic servo valve and the German HEIDENHAIN company grating ruler to form a closed-loop control, and the feedback is accurate. This kind of electro-hydraulic servo CNC system controls the press brake bending machine. Its main features are that it can be controlled and monitored in real time, and the hydraulic convex automatic compensation system is adopted to solve the influence of the deformation of the slider during the bending process on the quality of the workpiece. The amount of compensation is automatically adjusted by the numerical control system, which is convenient and accurate.

Functional feature description and common modification knowledge

Electro-hydraulic servo CNC press brake bending machine – performance characteristics

  • The main oil cylinders on both sides are synchronously controlled by electro-hydraulic servo valve imported from Germany and grating ruler from HEIDENHAIN company in Germany to form a closed-loop control, with accurate feedback and accurate operation of the slider, so that the bending accuracy and the repeated positioning accuracy of the slider are high.
  • The hydraulic convex automatic compensation system is adopted to solve the influence of the deformation of the slider during the bending process on the quality of the workpiece. The amount of compensation is automatically adjusted by the numerical control system, which is convenient and accurate.
  • Using a fully functional back gauge mechanism, which can optionally control multiple back gauge shafts. Functional parts in the back gauge. Such as guide rails, lead screws, bearings, etc. are all imported originals to ensure the accuracy of the back gauge.
  • The fuselage adopts an integral welded structure, which is convenient for transportation and processing, and can ensure the overall accuracy of the machine tool.
  • The fuselage, slider and other important components are analyzed by ANSYS finite element analysis software to ensure the reliability of the machine tool.
  • The hydraulic system adopts the integrated control system imported from Germany, which reduces the installation of pipelines, improves the working stability of the machine tool, and has a beautiful and simple appearance.
  • C-type plate is installed on both sides of the fuselage, and the high-precision grating ruler is installed on the C-type plate, so as to avoid the influence of the deformation of the fuselage on the bending accuracy during bending.

The above introductions on “Why can’t ordinary torsion axis press brake bending machine be converted into electro-hydraulic servo CNC press brake bending machine” and “What kind of performance characteristics does electro-hydraulic servo press brake bending machine have”, I hope you can understand “Electro-hydraulic servo press brake bending machine” The description of machine function features and the introduction of common modification knowledge” bring help.

The main difference and main characteristics of electro-hydraulic servo press brake bending machine and torsion axis press brake bending machine 1
The main difference and main characteristics of electro-hydraulic servo press brake bending machine and torsion axis press brake bending machine 2
The main difference and main characteristics of electro-hydraulic servo press brake bending machine and torsion axis press brake bending machine 3
The main difference and main characteristics of electro-hydraulic servo press brake bending machine and torsion axis press brake bending machine 4
The main difference and main characteristics of electro-hydraulic servo press brake bending machine and torsion axis press brake bending machine 5

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