ZHEJIANG YITIAN PRECISION MACHINERY CO.,LTD
How to debug the hydraulic station of precision four-guide column punch components
Most of the hydraulic stations of precision four-guide column punch components are closed-loop control systems, which must meet the needs of the stability, response time and accuracy of the hydraulic press system. First, let's talk about how to install the hydraulic station. The material or paint on the inner wall of the tank should not become the pollution source of the oil, so the oil tank of the hydraulic station is preferably made of stainless steel; secondly, the hydraulic station adopts a high-precision filter, which is generally 5 according to the requirements of the electro-hydraulic servo valve on the filtration accuracy. ~10μm; Finally, after the general pickling and other processes of the hydraulic station oil tank and pipeline system, low-viscosity hydraulic oil or turbine oil is injected for no-load circulating flushing.
The correct installation of the hydraulic station is only the first step, the next step is to carry out debugging, the method is as follows:
1. Zero adjustment, including the zero adjustment of the precision four-guide column punch components servo valve and the zero adjustment of the servo amplifier. In order to adjust the zero position of the system, a bias voltage is sometimes added;
2. Static test of the hydraulic press system, determine the static relationship between the controlled parameters and the command signal, and adjust a reasonable magnification. Generally, the larger the magnification, the smaller the static error and the higher the control accuracy, but it is easy to cause system instability;
3. Dynamic testing of precision four-guide column punch components system, using dynamic testing instruments, usually needs to measure system stability, frequency response and error, to determine whether it can meet the design requirements, the system dynamic and static test records can be used as future system operation Basis for condition assessment.
4. After the hydraulic station is put into operation, regularly check and record the relevant values, oil temperature, oil pressure and oil pollution, as well as the stable operation, the zero bias of the actuator, and the tracking of the signal by the actuator.
To sum up, before the precision four-guide column punch components are officially used, it is best to refer to the requirements and instructions of the hydraulic press manufacturer for the correct installation and debugging of the hydraulic station.