1. Application of hydraulic module on CNC machine tools
The hydraulic module has become an important part of CNC machine tools because of its unique advantages such as small size, light weight, high power, easy automatic control, stable operation and stepless speed regulation in a wide range.
The application of hydraulic modules on CNC machine tools is more and more extensive, and there are more and more control objects. The existing control objects mainly include: automatic tool change of machining center, braking and spindle orientation of the spindle, clamping and loosening of the hydraulic chuck, lifting, locking and indexing of the hydraulic turret, vertical The balance of the CNC machine headstock, the ejection and retraction of the CNC lathe tailstock sleeve, the exchange of the automatic exchange workbench, the rise, fall and lock of the CNC rotary table, and the operation of the hydrostatic guide.
2. Common fault forms
The hydraulic module of CNC machine tools is a mechatronics product. Its structure is complex, its fault forms are diverse, the causes of faults are complex and changeable, and troubleshooting is extremely difficult.
Common faults of hydraulic modules on CNC machine tools include: insufficient fuel tank, insufficient oil pressure, oil contamination, high oil temperature, hydraulic pipeline and hydraulic valve blockage, hydraulic pump damage, hydraulic cylinder wear, hydraulic components leaking oil, Vibration and noise of hydraulic pumps, hydraulic motors and various control valves, crawling of actuators, etc.
Generally speaking, when the hydraulic module fails, it can be analyzed from the above aspects, but due to the complexity of the control of the CNC machine tool and the close connection of the structure, the failure of the hydraulic module does not occur independently, often with other CNC machine tools. The failure of components and systems is linked. Therefore, when the hydraulic module fails, it is generally difficult to eliminate. The following is a few typical examples to analyze the diagnosis methods and processes of their faults.
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