1. Firstly, a servo system with high power and torque should be selected, which will directly affect the overload capacity during high-pressure action. The ultimate performance of the machine can be tested through physical testing, such as using the highest pressure for a long time (recommended not less than 40 seconds), cycling multiple times to detect the machine's status;
At present, there are different grades of magnetic steel for servo motors, including M, S, H, and SH. SH is the highest grade and has the largest magnetic flux (i.e. the number of magnetic lines per unit area), which gives it an advantage in high torque output and good overload capacity; Avoid using low-cost servo systems, as prolonged overloading of the servo system can cause demagnetization of the servo motor, resulting in a decrease in machine power;
2. Pay attention to the connection method between the motor and the oil pump, whether reliable couplings and bracket structures are used, because servo motors will frequently accelerate, decelerate, brake, and reverse during operation, and all of them will be completed within tens of milliseconds. This will affect the axial concentricity and buffering during the driving process, thereby affecting the service life of motor bearings and oil pumps.
3. Pay attention to the data that affects the operating efficiency of the machine, such as the displacement and speed of the oil pump. The larger the displacement of the oil pump at the same speed, the higher the operating efficiency of the machine. When selecting the displacement of the oil pump, the relationship between the maximum flow output requirement and the speed should be considered. Before ensuring the maximum flow output requirement, it is recommended to design the speed within a reasonable and safe range to ensure the reliability and service life of the servo drive system. Low speed design also brings faster response speed, but this will increase the cost of the machine, involving the issue of machine price positioning. Both users and machinery manufacturers need to have forward-looking cost sharing.