Servo hydraulic system of friction welding machine

Abstract

The invention aims to provide a servo hydraulic system of a friction welding machine. The servo hydraulic system comprises a servo motor, a hydraulic pump, an electromagnetic directional valve and a main oil cylinder, wherein the main cylinder and the electromagnetic directional valve are mutually connected, a P end of the electromagnetic directional valve is connected to an oil tank via the hydraulic pump, the hydraulic pump and the servo motor are mutually connected, and a T end of the electromagnetic directional valve is connected to the oil tank. By adjusting pressure and flow quantity via a servo controller, storage of multiple groups of parameters and welding of products in multiple specifications are facilitated, by comparing feedback of a pressure sensor with parameters set by the servo controller, pressure closed-loop control of a hydraulic system of the friction welding machine is realized, utilization power of the system is reduced, energy consumption is saved, the hydraulic system is simplified, stability of the hydraulic system is improved, hidden fault danger is reduced, and purpose of the servo hydraulic system of the friction welding machine is achieved.

Description

technical field [0001] The invention relates to a hydraulic system, in particular to a servo hydraulic system suitable for friction welding machines. Background technique [0002] The welding process of the friction welding machine is mainly through the work of the main cylinder to achieve the 2-level or 3-level pressure required in the welding, as well as the fast forward, slow forward and retreat of the workbench, and the hydraulic system that provides the working power of the main cylinder The performance directly affects the quality of parts welding. , [0003] The current friction welding machine hydraulic system is mainly composed of hydraulic components such as motor, oil pump, pressure control valve, flow control valve and reversing valve. Such as figure 1 As shown, the working principle of the existing friction welding machine hydraulic system is: drive the hydraulic pump 2 through the motor 1, and pass the pressure and flow for the system; The friction pressure...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a servo hydraulic system of a friction welding machine. Aiming at the deficiencies of the prior art, it changes the control limitations of the existing hydraulic system of the friction welding machine, and effectively solves the problem of the oil in the hydraulic system of the friction welding machine. Excessive temperature, complexity of maintenance of hydraulic components, closed-loop control of welding parameters, storage and recall of multiple sets of welding parameters, and excessive power consumption

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