What is the correct way to adjust the speed of the hydraulic press?

1. The control method of throttling and speed regulation. Hydraulic machine manufacturers can use quantitative pumps to supply oil, use throttling elements to change the oil circuit distribution of parallel branches, and then change the flow rate into the actuators to achieve speed regulation.
2. The control method of volume speed regulation. Hydraulic machine manufacturers achieve speed regulation by changing the effective working volume of the hydraulic pump.
3. The control method of volumetric throttling speed regulation. Hydraulic machine manufacturers can combine methods 1 and 2, and use variable pumps and throttling elements to adjust the movement speed of hydraulic machine actuators.