What are the differences between swing plate shears and guillotine shearing machine and precautions for use?
CNC plate shears can be divided into swing plate shears and guillotine shearing machine according to the motion mode of the upper blade.
(1) Pendulum plate shears are hydraulically driven plate shears. The upper tool rest of the pendulum plate shears swings in an arc around a fixed axis during the shearing process. The force on the fulcrum is small through the lever action, which can improve the service life of the shear blade and the machine. The whole machine is compact in structure, and can adjust the stroke of the upper tool rest endlessly, greatly improving the working efficiency;
(2) The gate type plate shears have the advantages of strong shearing force and good shearing effect, which have always been highly praised in sheet metal processing. The gate type plate shears adopt frame structure and all steel welding; Four corner eight side right angle guide rail, high precision, good rigidity, and hydraulic preloading. The hydraulic system adopts two-way cartridge integrated valve; The whole system adopts; It can also be equipped with stroke digital display, photoelectric protection device and mobile worktable (convenient for mold replacement). The gate type plate shear has the double action function of upper slider and lower hydraulic pad. The working pressure stroke of Wuxi Shenchong can be adjusted within the specified range according to the process requirements. The operation is simple and convenient, and the button set is used for control.
Shearing machine
Precautions for using plate shears:
- Start the plate shearing machine and idle it for several cycles to ensure that under normal conditions, try to shear plates of different thicknesses from thin to thick. Make sure that the user is familiar with the shear performance.
- Different blade clearances must be adjusted for different plate thicknesses during shear test. If the corresponding blade clearance is not adjusted, the blade durability will be affected.
- Switch on the pressure gauge switch of the plate shearer during shearing, observe the pressure value of the oil circuit, and the pressure shall be less than 20MPa when shearing 12mm plates. This remote pressure regulating valve
No9, the pressure is set at 20-22MPa when leaving the factory, and the user must abide by this regulation. It is not allowed to increase the pressure for the material surface beyond the specified value, causing damage to the machine.
- Sound balance during operation. If the shear plate has noise, it shall be stopped for inspection.
- Shut down and rest when the oil tank temperature is less than 60 ° C during the operation of the shear.
How to prolong the life of numerical control plate shears? What are the maintenance elements of hydraulic plate shears?
When purchasing numerical control plate shears, we should not only pay attention to the price, but also understand the product quality, service life and later service. Because of incorrect understanding, the hydraulic plate shears may not meet our own requirements and service life, so we should do the following maintenance when we buy them back:
CNC plate shearing machine
(1) The hydraulic plate shears shall maintain proper viscosity. Viscosity is the size of the friction resistance between molecules when the oil flows. If the viscosity is too high, the transmission resistance in the pipeline will increase. During the working process, the energy loss will increase, the no-load loss of the main engine will increase, the temperature will rise quickly and the working temperature will be high, and “cavitation” may occur at the oil suction end of the main pump; If the viscosity of the hydraulic oil of the plate shearing machine is too small, the good lubrication condition of the plate shearing machine cannot be guaranteed, the wear of the parts of the hydraulic system of the plate shearing machine will be aggravated, and the system leakage will increase, resulting in a decrease in the volumetric efficiency of the oil pump. The specific application depends on the working pressure, working temperature and the movement speed of the actuating element of the hydraulic system of the plate shearing machine. High viscosity should be selected for high pressure and high temperature, and low viscosity should be selected for high-speed movement.
(2) The hydraulic oil of hydraulic plate shears shall have good wear resistance and lubricity. The manufacturer of numerical control plate shearing machine believes that the purpose is to reduce the mechanical friction and ensure the service life of the hydraulic system of the plate shearing machine.
(3) The hydraulic oil of hydraulic plate shearing machine has good viscosity temperature property. Viscosity temperature property refers to the degree to which the viscosity of oil changes with temperature, usually expressed by viscosity index. The higher the viscosity index is, the smaller the oil viscosity will decrease with the temperature rise during the operation of the hydraulic system of the shear, so that the internal leakage of the hydraulic system will not be too large.) The working conditions of the hydraulic system of the plate shears are generally bad. During the operation, the temperature of the hydraulic oil varies with the load and the ambient temperature, and the viscosity index is generally not less than 90.
(4) Primapress hydraulic shear oil has good oxidation stability. Antioxidant stability refers to the ability of low resistance to chemical reaction with oxygenates when oil temperature rises. The practice shows that the chemical reaction rate will increase about twice when the oil temperature increases by 10 ℃. The hydraulic oil of the shearing machine with good oxidation stability is not easy to be oxidized and deteriorated after being used for a long time, which can ensure the normal circulation of the hydraulic oil.
The hydraulic plate shears must always be kept clean, and the unpainted parts of the anti rust grease must be well maintained so as to extend the service life of the hydraulic plate shears.
