Combined machine tool power sliding table hydraulic system

Abstract

The invention discloses a combined machine tool power sliding table hydraulic system. A single-rod piston cylinder fixed through a piston rod is adopted, a speed control strip is fixed to the outer side of a cylinder barrel in the axial direction, the height of each section of the speed control strip controls the working speed, and the length controls the duration time of the working speed. When the cylinder barrel of the single-rod piston cylinder stretches out, the speed control strip on the cylinder barrel presses an idler wheel of a stroke valve downwards, the opening degree of a valve port of the stroke valve is changed, then the flow of liquid flowing to the single-rod hydraulic cylinder is controlled, and finally the movement speed of the single-rod piston cylinder is controlled. The stroke valve is a two-position two-way motor-operated valve, an outlet of the stroke valve communicates with a rodless cavity of the single-rod piston cylinder, and an inlet of the stroke valve communicates with an electro-hydraulic reversing valve. An unloading valve, a pressure supply one-way valve, a back pressure overflow valve, an oil tank, a hydraulic pump, an oil filter, a pressure relay, a delay throttle valve, a relay one-way valve and other elements are used in cooperation with the single-rod piston cylinder and the stroke valve. The combined machine tool power sliding table hydraulic system has the advantages of being simple in structure, low in energy consumption, high in control precision and the like.

Description

technical field [0001] The invention relates to the technical field of hydraulic transmission and control, in particular to a hydraulic system for a power sliding table of a combined machine tool. Background technique [0002] Combined machine tool is a special machine tool with a high degree of automation. Different cutting tools can be installed on its power slide table to process corresponding workpieces. At present, the working cycle of the hydraulic system of the power slide table of the combined machine tool is: fast forward → first working forward → second working forward → stop at the dead stop → fast reverse → stop. In order to complete this working cycle, in addition to the stroke In addition to the valve, a two-position three-way solenoid valve, two speed regulating valves connected in series, electric travel switch, iron stop and other components are required, resulting in the hydraulic system of the power slide table having defects such as complex structure, hig...

AI Technical Summary

Problems solved by technology

At present, the working cycle of the hydraulic system of the power slide table of the combined machine tool is: fast forward → first working forward → second working forward → stop at the dead stop → fast reverse → stop. In order to complete this working cycle, in addition to the stroke In addition to the valve, a two-position three-way solenoid valve, two speed regulating valves connected in series, electric travel switch, iron stop and other components are required, resulting in the hydraulic system of the power slide table having defects such as complex structure, high energy consumption, and low control accuracy.

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