CNC machine tool faults can be divided into electrical faults and mechanical faults according to the location of occurrence. Electrical faults generally occur in the control parts such as system devices, servo drive units and machine tool appliances. Electrical faults are generally caused by factors such as the decline of quality factors of electrical components, loose welding of components, poor contact or damage of connectors and connectors.
These faults sometimes occur, such as the large leakage current of an electronic component, After working for a period of time, its leakage current increases with the increase of ambient temperature, which leads to abnormal operation of components and affects the normal operation of the corresponding circuit. When the ambient temperature decreases, the fault disappears again. This kind of fault is difficult to find by visual inspection. Generally, the working voltage should be checked with the help of measuring tools. Current or measure boxing for analysis. Mechanical faults generally occur in the mechanical moving parts.
The mechanical faults of CNC machine tools can be divided into functional faults, action faults, structural faults and applicability faults. Functional faults mainly refer to the faults of workpiece processing accuracy. These faults can be found, for example, the processing accuracy is unstable, the error is large, etc. action faults refer to various action faults of machine tools, which can be expressed as the spindle does not rotate, The workpiece cannot be added.
The positioning accuracy of the tool rest is low, and the hydraulic speed change is not flexible. The structural faults can be manifested as the heating of the spindle, the noise of the spindle box, the abnormal noise of the mechanical transmission, and the cutting vibration. The serviceable faults mainly refer to the faults caused by improper use and operation, such as the damage of the machine parts caused by excessive, and the mechanical faults can generally be prevented through maintenance and careful adjustment.