What are the differences between a servo press and a regular press?

1.The main driving method for a servo press involves a servo motor that is utilized for high-precision ball screw pressure equipment, whereby the torque of the servo motor directly transmits and converts pressure. Conversely, a regular press is driven by a motor oil pump, which changes direction through a reversing valve, and subsequently applies pressure via a hydraulic cylinder, causing pressure loss through the oil pipes and valve bodies.

2. In contrast, a specially designed and precise servo press is both energy-saving and environmentally friendly, as it utilizes a servo motor that does not rotate when the machine is in standby mode, and undergoes changes in speed and power during installation. On the other hand, a regular press motor constantly rotates during standby mode, consuming electricity and producing higher noise levels. Additionally, it rotates at a constant speed during operation, resulting in higher power consumption compared to a servo motor.

For a specially designed and precise servo press, the process usually consists of fast descent, work approach, pressure increase, pressure holding, pressure relief, and return stages. The required working pressure and flow rate vary in each stage. For the motor of a specially designed and precise servo press, the entire processing process is in a constantly changing load state. Currently, the majority of hydraulic presses use three-phase asynchronous motors to drive constant power variable pumps for power supply. Although they can achieve the effect of reducing delivery flow rate beyond the set pressure value, the motor is still in normal operation state during the entire working process. In essence, the motor does not need to drive the oil pump during the fast descent, pressure holding, and material release stages. If the motor is still in operation during this stage, it will consume resources on the one hand, and on the other hand, it will cause oil circulation overflow, leading to an increase in oil temperature and a large amount of heat generation, which also consumes resources.