Hydraulic press is a kind of machine tool that controls the movement of the press by hydraulic control system. Hydraulic control system is one of the main control systems of hydraulic press, which mainly includes hydraulic transmission system, electrical control system, mechanical transmission system and man-machine interface control system. These systems are described in detail below.
First, hydraulic transmission system
Hydraulic transmission system is one of the key control systems of hydraulic press, which is mainly composed of hydraulic pump, hydraulic cylinder, hydraulic pipeline and hydraulic valve. The hydraulic pump converts the mechanical energy of the machine tool operating platform into hydraulic energy by mechanical means or electric means, and transmits it to the hydraulic cylinder through the hydraulic pipeline. The hydraulic cylinder is controlled by the hydraulic system, which makes the piston rod of the hydraulic cylinder move forward and backward, so as to realize the up and down punching of the punching die.
The design and debugging of the hydraulic transmission system has an important influence on the performance of the hydraulic press. On the one hand, the size of the lifting speed and lifting force should meet the design requirements of the punch; On the other hand, the stability and working reliability of the system are also important indicators of the design of the hydraulic transmission system.
Second, electrical control system
The electric control system of hydraulic press mainly includes two parts: power circuit and control circuit. The power circuit is the circuit that drives the various motors of the press, including the main power switch, contactor and motor. The control circuit controls the working state of the hydraulic transmission system through electrical components and electrical signals, including button control, photoelectric switches, electrical signal sensors, etc.
The electric control system of hydraulic press has the characteristics of simple operation, high reliability and easy maintenance. The control circuit design is reasonable, which can accurately realize the various action requirements of the press.
Third, mechanical transmission system
The mechanical transmission system of the hydraulic press refers to the system that realizes the impact action of the press through various transmission devices. It mainly includes crank mechanism, transmission chain, CAM mechanism, etc., through which the rotating motion of the motor is converted into the upper and lower impact motion of the mold.
The design of mechanical transmission system directly affects the working stability of hydraulic press and the life of mechanical parts. Reasonable mechanism design and suitable mechanical transmission device can improve the efficiency and accuracy of the press.
Four, man-machine interface control system
The man-machine interface control system of hydraulic press is a kind of control system designed to facilitate the operator to control the work of the press. It mainly includes touch screen control panel, operation button, alarm system and so on. Through these control elements, the debugging and operation of the press can be realized conveniently.
The design of the man-machine interface control system should consider the principle of ergonomics, so that the operator can operate and monitor easily and quickly. At the same time, the human-machine interface control system should also have alarm and fault diagnosis functions to ensure the safety and reliability of the operation.
In summary, the main control system of the hydraulic press includes hydraulic transmission system, electrical control system, mechanical transmission system and man-machine interface control system. The perfect design and reasonable cooperation of these systems are the key to realize the high efficiency and stability of the press. With the development of science and technology, control system technology is also improving, the control system of the hydraulic press will be more intelligent and automated.
