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EnglishAdvantages of Dual Servo Oil-electric Hybrid CNC Press BrakeDate：2024-01-11 Clicks：117
With the widespread application of press brake and further intensification of market competition, for manufacturers using press brake, power consumption has become an important part of their production costs. Therefore, reducing the energy consumption of press brake has become an important factor for factories to reduce costs and improve an effective way to improve product competitiveness.The servo oil-electric hybrid system uses two servo motors and servo pumps to control the left and right oil cylinders. The servo motors control the output flow of the oil pump according to the program settings, thereby controlling the movement speed and positioning of the slider. There is no throttling in the entire process. Therefore, all the energy output by the oil pump is supplied to the left and right cylinders. There is no energy loss in this control method, and the energy saving effect is very outstanding.
Since there is almost no energy loss in hybrid oil-electricity, the whole process will not cause a significant increase in oil temperature, and the oil consumption of this type of machine is also significantly less than that of electro-hydraulic synchronous CNC bending machines. Generally, servo oil-electric hybrid machines The oil consumption is about 30% of the oil consumption of ordinary electro-hydraulic synchronous CNC bending machines. The advantage is more prominent for large tonnage, especially heavy-duty CNC bending machines, which means that it only requires one-third of the oil consumption. quantity. Analysis of fuel consumption of hybrid and electro-hydraulic synchronous bending machines.
Principle of oil-electric hybrid CNC (pump control) system
The displacement readings of the left and right actuators (double-rod cylinders) are fed back to the CNC system through the displacement sensor (grating ruler or magnetic scale). After comparison, the CNC system controls the left and right power units, thereby realizing the left and right actuators (double-rod cylinder). Cylinder) synchronization and positioning closed-loop control. The displacement sensor forms an internal feedback link to improve the control accuracy of the system.
Advantages of oil-electric hybrid drive (pump control) electro-hydraulic system
Because the motor of the hybrid CNC press brake does not rotate when it is in standby, the machine is in a zero-noise state when it is not working; because the oil consumption of the hybrid CNC machine is only one third of that of the electro-hydraulic synchronous machine, and the oil temperature is It is controllable, so there is generally no need to replace the hydraulic oil within three years; because the frequency response of the servo motor is much higher than that of the proportional valve, the time of a bending cycle of the hybrid CNC bending machine is 30 times faster than that of the electro-hydraulic synchronous CNC bending machine. %. Taking the 110t bending machine as an example, the general electro-hydraulic synchronous CNC press brake completes 12 bends per minute, while the hybrid CNC press brake can complete 16 times per minute.
By comparing the two control methods, we can clearly see that the oil-electric hybrid CNC (pump control) system has the characteristics of high efficiency, energy saving, high precision, low noise, and environmental protection.
The oil-electric hybrid CNC press brake has better synchronization, is truly energy-saving and efficient, has a simple structure and is faster, but the price is higher. How to achieve reasonable costs and stable performance, that is, a higher cost-effectiveness is the key for enterprises to form batches. production and market acceptance. The dual-servo hybrid CNC (pump control) system uses a one-way quantitative pump and a double-rod cylinder (ie, a speed-increasing cylinder). These two key elements are the biggest features of the Dongduan dual-servo hybrid system. The one-way quantitative pump has better economic benefits than the two-way quantitative pump, and the double-rod cylinder shows the characteristics of stability and efficiency.
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