In our daily life, if we usefour-column hydraulic pressIf the vibration is too serious, Xiao Bian suggests that everyone solve the problem quickly so as not to cause trouble. But if you don't know how to solve itfour-column hydraulic pressIf the problem of vibration is too serious, you can first follow Xiaobian to take a look at the countermeasures provided in the following article.
Vibration reduction measures for sudden 1. loss of load
(1) Minimize the energy stored in the hydraulic cylinder when the four-column hydraulic press suddenly loses load. A thick backing plate can be added between the press worktable and the lower mold to move the working stroke upward. A movable backing plate is added between the working cylinder plunger and the sliding beam, and a series plunger is used to reduce the working cylinder during the loss of ash. The amount of liquid in the upper cavity achieves the purpose of vibration reduction.
(4) Vibration reduction measures when hydraulic shock occurs: Hydraulic shock is mostly caused by the inertia of moving parts or oil. Appropriately reducing the movement speed of moving parts before stopping and extending the opening and closing time of the valve can reduce hydraulic shock. For example, increasing the flow of the damping control pilot valve can reduce the reversing speed of the reversing valve, thereby reducing the hydraulic shock.
This is the end of the introduction of the solution to the problem that the vibration of the four-column hydraulic press is too serious during operation. I hope everyone has figured out the specific method.
Vibration reduction measures for sudden 1. loss of load
(1) Minimize the energy stored in the hydraulic cylinder when the four-column hydraulic press suddenly loses load. A thick backing plate can be added between the press worktable and the lower mold to move the working stroke upward. A movable backing plate is added between the working cylinder plunger and the sliding beam, and a series plunger is used to reduce the working cylinder during the loss of ash. The amount of liquid in the upper cavity achieves the purpose of vibration reduction.
(2) Hindering the release of energy. From the deformation resistance curves of blanking and punching, it can be seen that when the working stroke is about 2/3 of the material thickness, the shear force reaches a large value. When the material breaks, the shear force rapidly decreases to zero, causing the four-column hydraulic press to suddenly lose load. For example, when the working stroke slightly exceeds 2/3 of the material thickness, a hydraulic pad is added at the lower part of the material to increase the resistance of the moving beam falling, the four-column hydraulic press does not suddenly lose load when the material breaks, thus reducing the impact vibration.
(3) Vibration reduction measures during the return trip: On the one hand, some of the measures mentioned above can be taken to reduce the volume of the upper cavity of the working cylinder to reduce the stored elastic energy. On the other hand, it can also delay the pressure relief speed of the upper chamber of the working cylinder to reduce the impact vibration. For example, before the return of the sliding beam, the upper cavity of the working cylinder is drained of oil through the orifice to slow down the pressure relief speed. After the oil pressure is reduced to the value, open a large oil discharge port to speed up the pressure relief speed, so as to achieve the purpose of not only not generating impact and vibration, but also appropriately shortening the entire pressure relief time. Experiments have proved that when the pre-pressure is relieved to 3 --- 5MPa, the pressure is relieved and returned quickly, which generally does not cause impact vibration.(4) Vibration reduction measures when hydraulic shock occurs: Hydraulic shock is mostly caused by the inertia of moving parts or oil. Appropriately reducing the movement speed of moving parts before stopping and extending the opening and closing time of the valve can reduce hydraulic shock. For example, increasing the flow of the damping control pilot valve can reduce the reversing speed of the reversing valve, thereby reducing the hydraulic shock.
This is the end of the introduction of the solution to the problem that the vibration of the four-column hydraulic press is too serious during operation. I hope everyone has figured out the specific method.