High-speed press brake is a comprehensive integration of mechanical, electrical, and hydraulic systems. Hydraulic transmission, mechanical transmission, and electrical transmission are the three major traditional forms, with hydraulic system design playing an important role in modern mechanical design. Therefore, when the hydraulic system of a press brake malfunctions, it can have a fatal impact on the entire equipment.
The failure of the hydraulic system in a high-speed press brake is sometimes caused by a malfunctioning component in the system. Therefore, the first step is to identify the faulty component and systematically inspect and troubleshoot the hydraulic system of the press brake to determine the cause of the malfunction and carry out the corresponding repairs.
1. The hydraulic transmission equipment operates abnormally, such as no movement, unstable movement, incorrect movement direction, movement speed not meeting requirements, disorderly action sequence, unstable output force, severe leakage, creeping, etc.
Regardless of the causes, they can be summarized into three major issues: flow, pressure, and direction.
2. Review the hydraulic circuit diagram and inspect each hydraulic component, confirming its performance, function, and preliminary assessment of its leakage condition.
3. Create a list of components related to the failure and analyze them one by one. When conducting this step, it is important to use judgment and ensure that no components with significant impact on the failure are overlooked.
4. Arrange the components listed in the inventory in the order of difficulty based on past experience and component inspection. If necessary, specify the key inspection points for components and arrange measurement instruments accordingly.
5. Conduct preliminary inspections on the key inspection components listed in the inventory. The preliminary inspection should assess the following issues: suitability of component assembly and usage, suitability of measurement devices, instruments, and testing methods, suitability of external signals for components, and response of components to external signals. Pay special attention to early signs of component failure, such as high temperature, noise, vibration, and leakage.
6. If no faults are detected during the preliminary inspection, perform repeated inspections using instruments.
7. Identify the faulty component and repair or replace the non-compliant component.
8. Before restarting the main machine, carefully consider the cause and consequences of the failure. If the failure is caused by contamination or excessive oil temperature, anticipate the possibility of other components also experiencing failures and take appropriate measures to address the underlying issues. For example, if the failure of the hydraulic pump is due to contamination, thorough cleaning and filtering of the system must be performed before replacing the new pump.
After troubleshooting the hydraulic system of the high-speed press brake, it is important not to rush or blindly restart the machine. It must be done following specific requirements and procedures. Otherwise, after resolving the old issues, new problems may arise successively, requiring further troubleshooting.
