The difference between servo press machine and ordinary press machine

1. The main driving mode of the precision servo press: the servo press is driven by a servo motor and is used for pressure assembly of high-precision ball screws. Pressure is converted directly from the torque output of the servo motor. The ordinary press machine is driven by a motor oil pump, changes the direction through a reversing valve, and then performs pressure operation through a hydraulic cylinder. The pressure passes through the oil pipe and the valve body, and there is a certain loss.
2. The professional precision servo press is energy-saving and environmentally friendly: the servo press uses a servo motor. When the machine is in standby mode, the motor does not rotate. In addition, the speed and power were changed during the press installation. In ordinary press-fitting machines, the motor always rotates when it is in standby, which requires a certain amount of electricity. It also rotates at a constant speed during work, and the power consumption will be higher. Noise is also higher compared to servo motors.
For precision servo presses, the process is generally divided into stages such as fast down, working, pressurization, pressure holding, discharge, and return. The working pressure and flow required for each stage are different. Professional precision servo presses As far as the machine is concerned with the motor, the entire processing process is in a constantly changing load state. At present, most hydraulic machines use a three-phase asynchronous motor to drive a constant power variable pump to provide power. Although the output flow can be reduced by exceeding the set pressure value , but the motor is always in the normal running state during the whole working process. In fact, the motor does not need to drive the oil pump to work in the fast-down, pressure-holding state, and stop loading and unloading state. If the motor is still in the working state in this state, on the one hand, the motor It will cause a waste of energy, and on the other hand, it will also cause the circulation of oil to overflow to form a rise in oil temperature, generate a large amount of heat, and cause energy waste.