During the operation of a five axis vertical machining center, the cooling system plays a crucial role in effectively controlling cutting temperature, extending tool life, and ensuring machining accuracy. Once the cooling system malfunctions, it not only affects processing efficiency, but may also lead to issues such as decreased workpiece accuracy and damage to equipment components. Therefore, timely and accurate diagnosis and treatment of cooling system faults are crucial for ensuring the stable operation of machining centers.

There are three common manifestations of cooling system failures: first, a significant decrease in cooling efficiency, abnormal increase in workpiece or tool temperature during processing, and even smoking; The second is the cooling system alarm, and the equipment control panel displays fault codes such as low liquid level and abnormal pressure; The third issue is coolant leakage, with obvious accumulation of fluid at the bottom of the equipment or connecting pipelines.

Corresponding diagnostic approaches should be adopted for different fault manifestations. When the cooling efficiency decreases, first check whether the coolant circulation path is unobstructed and whether the filter screen is blocked by impurities. If a large amount of metal debris or oil stains adhere to the surface of the filter screen, it needs to be disassembled and cleaned in a timely manner; Next, check the working status of the cooling pump and determine if there is any abnormal noise by listening to the running sound. If the pump body is running weakly, it may be due to motor failure or internal component wear. For system alarms, first locate the type of problem based on the fault code. If the displayed liquid level is too low, check whether there is a leak or rapid evaporation in the coolant tank. After replenishing the coolant, observe whether the liquid level continues to decrease; If it is an abnormal pressure, it is necessary to check whether the pipeline is bent or blocked, or whether the pressure sensor is malfunctioning. In case of coolant leakage, it is necessary to check the sealing condition of the interface along the pipeline one by one, check whether the sealing ring is aging or damaged, and at the same time check whether there are cracks in the welding seam of the cooling water tank.

When dealing with faults, it is necessary to follow safety regulations and operating procedures. When cleaning the filter screen, the cooling pump power should be turned off first to avoid liquid splashing; When replacing the sealing ring or repairing the pipeline, it is necessary to choose accessories that match the equipment model to ensure sealing performance; If the cooling pump motor malfunctions, it is necessary to contact professional maintenance personnel for disassembly and maintenance. Unauthorized disassembly is not allowed. After the fault handling is completed, the equipment needs to be started for trial operation to observe whether the operating parameters of the cooling system have returned to normal. Continuously monitor for 1-2 processing cycles to confirm that the fault has been resolved.

In addition, daily maintenance can effectively reduce the occurrence of malfunctions. Regularly check the coolant concentration and adjust it in a timely manner according to processing requirements; Thoroughly clean the cooling system every quarter to remove internal impurities; Check the connection of the pipeline every month, replace aging sealing rings, and ensure that the cooling system is always in good working condition.