What does the hydraulic system of the machine tool do?

Different machine tool hydraulic systems have different functions. The hydraulic system of the grinding machine is to ensure the smooth operation of the machine tool and reduce the impact force of the working face; The sawing machine is used by the hydraulic system to lift the cutting speed and clamp the workpiece;

The advantages of the hydraulic system are:

1. Various components of hydraulic transmission can be arranged conveniently and flexibly according to needs. 2. Light weight, small size, small motion inertia and fast response speed. 3. The control is convenient, and a wide range of stepless speed regulation can be realized (the speed regulation range is up to 2000:

1）。4. Overload protection can be realized automatically. 5. Generally, mineral oil is used as the working medium, and the relative moving surface can be lubricated by itself, and the service life is long.

6. It is easy to realize linear motion. 7. It is easy to realize the automation of the machine, when the electro-hydraulic joint control is adopted, not only can a higher degree of automatic control process be realized, but also remote control can be realized. The disadvantages of the hydraulic system are:

1. The efficiency is low due to the large resistance and leakage of fluid flow. If not properly handled, the leak will not only contaminate the site, but may also lead to disasters and accidents. 2. Because the working performance is easily affected by temperature changes, it is not suitable to work under very high or low temperature conditions.

3. The manufacturing accuracy of hydraulic components is high, so it is more expensive. 4. Due to the leakage of liquid medium and the influence of compressibility, the strict transmission ratio cannot be obtained. 5. It is not easy to find out the cause when the hydraulic transmission fails; Use and maintenance require a high level of technology.

Provide stable pressure for hydraulic chucks, hydraulic tailheads, and hydraulic turrets. A complete hydraulic system consists of five parts, namely power elements, actuators, control elements, partsless, and hydraulic oil.

Hydraulic presses are mainly used for heavy-duty external machining in industrial production, such as stamping, forging, drawing, die-casting and so on.

There are too many uses, and some heavy industry enterprises and machinery will use hydraulic presses.

The hydraulic system consists of five parts, namely power components, actuators, control components, auxiliary components (accessories) and hydraulic oil.

The oil is used as the working medium, and the pressure energy of the oil is used to manipulate the hydraulic actuator through the control valve and other accessories.

A complete hydraulic system consists of five parts, namely power components, actuators, control elements, auxiliary components (accessories) and hydraulic oil.

Power elements. The function of the power element is to convert the mechanical energy of the prime mover into the pressure energy of the liquid, which refers to the oil pump in the hydraulic system, which provides power to the entire hydraulic system. The structural forms of hydraulic pumps generally include gear pumps, vane pumps, piston pumps and screw pumps.

Regarding the hydraulic system, please consult 139, 4009 in the middle, and 5915 in the back

Actuators. The role of actuators, such as hydraulic cylinders and hydraulic motors, is to convert the pressure energy of the liquid into mechanical energy to drive the load in a linear reciprocating or rotary motion.

Control elements. Control elements (i.e., various hydraulic valves) control and regulate the pressure, flow and direction of fluids in hydraulic systems. According to the different control functions, hydraulic valves can be divided into pressure control valves, flow control valves and directional control valves. Pressure control valves include relief valves (safety valves), pressure reducing valves, sequential valves, pressure relays, etc.; Flow control valves include throttle valves, adjusting valves, diverter collector valves, etc.; Directional control valves include check valves, hydraulic check valves, shuttle valves, reversing valves, etc.

According to different control methods, hydraulic valves can be divided into on-off control valves, fixed-value control valves and proportional control valves.

Auxiliary components. Auxiliary components include oil tank, oil filter, cooler, heater, accumulator, oil pipe and pipe joint, sealing ring, quick change joint, high-pressure ball valve, hose assembly, pressure measuring joint, pressure gauge, oil level gauge, oil thermometer, etc.

Hydraulic OilHydraulic oil is the working medium that transmits energy in the hydraulic system, and there are several categories such as various mineral oils, emulsions and synthetic hydraulic oils.

The principle and application of automatic round-trip control of machine tool workbench trolley are introduced through the circuit diagram.

What is the working principle of the hydraulic system of the machine tool table?

A hydraulic system is a system that converts hydraulic energy into mechanical energy. The hydraulic system includes different hydraulic components, and different hydraulic components have different functions.

The following is a brief introduction to several more important hydraulic components:

The hydraulic pump is the power element in the hydraulic system, the hydraulic cylinder is the functional element in the hydraulic system (external work), and the hydraulic valve is the control element in the hydraulic system.

It is a system that realizes action through hydraulic station, hydraulic valve table, hydraulic pipeline and hydraulic actuator.

Operating systems that use liquid-oriented media are collectively referred to as hydraulics. Purely personal.

The hydraulic oil must be clean, and the oil tank must remember to place the opt-200 so that it will get twice the result with half the effort.

The system uses a high-pressure, high-flow variable pump for oil supply and a fast motion circuit for automatic oil filling with a drawing slide, which not only meets the process requirements, but also saves energy.

The setting pressure of the sequential valve in the system is 25MPa, so that the hydraulic pump must be unloaded at the pressure of 25MPa, and also makes the control oil circuit have a certain working pressure.

In the system, a special pre-discharge reversing valve is used to realize the pressure relief before the rapid return of the upper slider, ensure the smooth action, and prevent the hydraulic shock and noise during the reversing.

The system uses the elastic deformation of pipes and oil to maintain pressure, which is a simple method, but has high requirements for the sealing performance of hydraulic check valves and hydraulic cylinders.

The action coordination of the upper and lower hydraulic cylinders in the system is guaranteed by the interlocking of the reversing valves of the upper and lower cylinders, and one cylinder must be at rest when the other cylinder can act.

Each of the two hydraulic cylinders in the system has a relief valve for overload protection.

What are the movements in the machine with hydraulics?

The scope of application of all machine tools with hydraulic system is:

1. CNC lathe: hydraulic chuck - used to clamp and relax the workpiece. Hydraulic tailstock - the shaft machining of the shaft to hold and release the shaft workpiece.

2. Machining center: lock the tool holder, tool magazine operation, special fixture compression, relaxation.

3. Automatic milling machine: quickly approach the workpiece, slow forward the cutter, slow push the cutter, and quickly return to the end point (also the starting point).

4. Automatic drilling machine: same as above.

5. All automatic machine tools operate the same as 3.

There are many, countless, as long as you have worked in the factory, you will see a lot of hydraulic devices.

Hydraulics is a transmission method that uses the compressibility of liquids and pressure to transmit power and movement.

The working principle of the hydraulic system: simply put, it relies on the motor to drive the hydraulic oil pump, converts the hydraulic oil or oil, water and oil-water mixture into a flowing liquid with a certain pressure, and then controls the various movements of the hydraulic cylinder, motor and other actuators through the pressure valve, flow valve and direction valve!