Working principle of servo press
2021-09-15
The main difference of the servo press is the power source. The power source of traditional hydraulic press and pneumatic press is compressed air of hydraulic oil, and the actuating device is hydraulic cylinder or pneumatic cylinder. The main control objects of the equipment are the pressure of hydraulic oil or compressed air, and the speed of hydraulic oil and compressed air entering and leaving the cylinder. The power source of the servo press is electricity, and the actuator is a servo motor. The rotating motion of the servo motor is transformed into the linear motion of the pressure shaft through a series of mechanisms.
On the man-machine interface of the servo press, the quality of the interference fit is effectively controlled, and the operation data is traced and managed to detect and eliminate defective products to avoid greater losses. At the same time, it can also help optimize the technical parameters and design of the process; It has the function of checking the current position when the force is applied. Judge whether the workpiece exists and whether the direction is correct; Have the ability to detect the pressure within the range of any press fitting displacement, and sample various pressure values (maximum value, value-added equivalent) to judge whether the set quality control conditions are met; The position detects the pressure and position, and judges whether the quality control conditions set for the end position are met.
The structure of AC servo press is mainly composed of main driver, actuator and auxiliary mechanism. The main function of the main transmission mechanism of the AC servo press is to transmit the energy required for forging from the servo motor to the actuator. Common transmission methods include gear transmission, belt transmission, screw transmission and hydraulic transmission. The main function of the actuator is to drive the slider to and fro and complete the forging process. Common actuators include slider crank mechanism and wedge crank mechanism. The main function of the auxiliary mechanism is to improve the reliability of the AC servo press and expand the technical application of the servo press. Common auxiliary mechanisms include balance cylinder, brake, injector device, position detection device, etc.
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