What is the role of the hydraulic system in CNC machine tools?

- Jul 12, 2018 -

Provides stable pressure for hydraulic chucks, hydraulic tailstocks, and hydraulic turrets. A complete hydraulic system consists of five parts, namely the power element, the actuator, the control element, the auxiliary element and the hydraulic fluid. The function of the power element is to convert the mechanical energy of the prime mover into the pressure energy of the liquid, referring to the oil pump in the hydraulic system, which provides power to the entire hydraulic system. The hydraulic pump is generally constructed in the form of a gear pump, a vane pump and a plunger pump. Actuating elements (such as hydraulic cylinders and hydraulic motors) convert the pressure energy of the liquid into mechanical energy, driving the load for linear reciprocating or swiveling motion. Control elements (ie various hydraulic valves) control and regulate the pressure, flow and direction of the liquid in the hydraulic system. According to different control functions, hydraulic valves can be divided into village force control valves, flow control valves and directional control valves. Pressure control valves are further divided into benefit flow valves (safety valves), pressure reducing valves, sequence valves, pressure relays, etc.; flow control The valve includes a throttle valve, a regulating valve, a split flow collecting valve, etc.; the directional control valve includes a one-way valve, a hydraulically controlled one-way valve, a shuttle valve, a reversing valve, etc., depending on the control mode, the hydraulic valve can be divided into a switch type control valve. , fixed value control valve and proportional control valve. Auxiliary components include fuel tanks, oil filters, tubing and fittings, seals, pressure gauges, oil level oil gauges, etc. Hydraulic oil is the working medium for transferring energy in hydraulic systems. There are various types of mineral oil, emulsion and synthetic hydraulic oil.

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