Views: 6 Author: DURMAPRESS Publish Time: 2022-01-19 Origin: DURMAPRESS
Hydraulic bending machine failure or prevention, some customers in the purchase of hydraulic bending machine after just blindly use, never maintenance will not pay attention to avoid the factors that will cause hydraulic bending machine failure, so they use hydraulic bending machine failure rate is relatively high. So bending machine factory hydraulic bending machine failure or 匛, in order to make your hydraulic bending machine to achieve the longest service life. Hydraulic system failure is generally due to three causes: pollution, air entry and overheating.
1. Ensure the cleanness of hydraulic oil of hydraulic bending machine and reduce pollution
Hydraulic oil of hydraulic bending machine should be correctly selected to prevent contamination and impurities from entering the hydraulic oil of hydraulic bending machine. The hydraulic oil of hydraulic bending machine is not only the medium of hydraulic system, but also the lubricant, so it has a great influence on the cleaning of the oil and the performance of the system, and the reliability and service life of hydraulic components. The main causes of hydraulic oil pollution in hydraulic bending machine are as follows: first, the outside of hydraulic actuator is dirty and debris enters the hydraulic system; Two is not used when refueling filter filter; Three is the use of containers unclean; Four is to check the amount of oil when impurities enter; Five is the serious wear and damage of the seal can not be replaced in time; Six is to check the repair of impurities iron filings and other impurities are not clean; Seven is improper storage of oil, debris into the tank, such as water. In the use and inspection and maintenance process, remember to pay attention to the above problems, can reduce the occurrence of hydraulic system failure.
2 To prevent air from mixing into the hydraulic oil of the hydraulic bending machine, resulting in cavitation phenomenon
The compressibility of hydraulic oil in hydraulic bending machine is very low, but the compressibility of air is large. If the hydraulic system contains a small amount of air, it has a great influence on the system performance. The air dissolved in the water, when the pressure is low, will overflow a large number of bubbles, the formation of cavitation phenomenon; If the pressure is high, under the impact of pressure, bubbles quickly burst, producing explosive noise, and releasing a large amount of heat energy, resulting in the destruction of components and heating of oil. In order to prevent air from entering the hydraulic system, the following points must be done: first, the return pipe is inserted below the oil level; Second, to prevent joint loosening, sealing damage; Third, when refueling to the tank, avoid incorrect refueling methods; Four is to avoid the hydraulic pump inlet put fine filter caused by oil absorption resistance, dissolved gas can not be separated out.
3 To prevent the hydraulic oil temperature of the hydraulic bending machine is excessive
The temperature of hydraulic oil of hydraulic bending machine is generally better controlled between 40℃ and 80℃. If it is above 80℃ for a long time, it will cause the viscosity of oil to be very low, easy to leak, resulting in high temperature of hydraulic components and short life. All aspects should be considered adequately on the choice radiator so. The oil viscosity is selected, want to consider, the energy loss in the high viscosity increasing oil flow, low viscosity will multiply leak, so when use should pay attention to and regular inspection, to prevent the oil temperature is too high, and regularly of hydraulic bending machine hydraulic oil filter, regular inspection, so that can guarantee the workability of the hydraulic system, also can reduce the wear and corrosion of hydraulic components, Prolong the life of hydraulic system.
Bending machine is divided into manual bending machine, hydraulic bending machine and hydraulic bending machine. Hydraulic bending machine can be divided into: torsional shaft synchronization, machine-hydraulic synchronization, and electro-hydraulic synchronization. Hydraulic bending machine according to the way of movement can be divided into: moving up, moving down. Comprises a bracket, a workbench and a clamping plate, the workbench is arranged on the bracket, the workbench is composed of a base and a clamping plate, the base is connected with the clamping plate through a hinge, the base is composed of a shell, a coil and a cover plate, the coil is arranged in the depression of the shell, the top of the depression is covered with a cover plate. Pay attention to the following points:
1. Strictly abide by the safety operation rules of machine tools, wear labor protection articles according to the regulations.
2. Before starting, carefully check whether the motor, switch, line and grounding are normal and firm, and check whether the operating parts and buttons of the equipment are stuck in the correct position.
3. Check the consistency and firmness of the upper and lower molds; Check whether the positioning device is in line with the processing requirements.
4. When the upper slide plate and each positioning axis are not in the origin state, run the back to the origin program.
5. After the equipment is started, it will run for 1-2 minutes, and the skateboard will move for 2-3 times in full journey. If there is abnormal sound or fault, it should stop immediately and remove the fault. After everything is normal, it can work.
6. When working, it should be under the unified command of 1 person, so that the operator and the feeding pressing personnel closely cooperate, to ensure that the coordination personnel are in the safe position of the bending signal.
7. The sheet must be compacted when bending to prevent the sheet from becoming warped when bending.
8. The power supply must be cut off when the plate pressing die is adjusted.
9. When changing the opening of the variable lower die, no material is allowed to contact the lower die.
10. When the machine is working, the back of the machine is not allowed to stand.
11. It is strictly forbidden to press the sheet material at one end alone.
12. When the workpiece or mold is found to be wrong during operation, it should be stopped for correction, and manual correction is strictly prohibited to prevent hand injury.
13. Do not fold super-thick iron plate or quenched steel plate, advanced alloy steel, square steel and sheet metal exceeding the performance of sheet metal bending machine, so as not to damage the machine.
14. Regularly check the overlap degree of upper and lower molds; Whether the indicator of pressure gauge is in accordance with the regulations.