Several functional components that require key maintenance in precision vertical machining centers

Precision vertical machining center is a high-precision and high-efficiency processing equipment that integrates automatic processing and complex centralized processing. It is a product of the deep integration of mechanical devices and electronic control devices. With the help of its own configured control system and tool magazine system, it is possible to achieve automatic transfer between various processes in the case of workpiece clamping at one time. Basically, it is possible to complete all or most of the processing tasks on a single device, including drilling, boring, reaming, tapping, and chamfering. More importantly, completing these processes requires little intervention from frontline processing personnel, and is controlled by the machine tool itself.

The reason why precision vertical machining centers have the above excellent processing characteristics mainly lies in their own configuration of advanced functional components. Compared to traditional machining machines, they are equipped with electronic control systems, servo systems, and other control devices. Under the control of this control device, the machine tool can perform complex and precise actions by executing the processing procedures of the workpiece, thereby completing various processing tasks of the workpiece;

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In addition, the tool magazine and automatic tool change mechanism are also typical configurations of precision vertical machining centers, and the replacement of processing tools for various processes of the workpiece is achieved through this device. Before workpiece processing, it is necessary to store the processing tools used in each process into a tool library in advance. During processing, the automatic tool change mechanism is controlled by a control device and automatically selects the tools suitable for this process from the tool library through processing program settings.

1、 Electrical control part

Firstly, it is necessary to frequently check whether the external three-phase power supply voltage connected to the precision vertical machining center is normal; Also focus on checking whether the contacts of low-voltage electrical appliances such as relays, contactors, thermal relays, and arc suppressors are in good condition and effective; It is also necessary to check whether the electrical components are well connected. Generally, the status check can be performed using the display diagnosis screen of the machine tool numerical control system. In addition, it is important to check whether the internal components of the electrical cabinet of the machine tool are too hot to prevent premature aging of the components caused by high temperatures, which may affect their performance.

2、 Servo motor system part

The servo motor and control part are the power source and the key to precision control of precision vertical machining centers. The focus should be on checking the noise and temperature rise of the motor. If the noise or temperature rise is too large, it is necessary to find out whether it is a mechanical problem such as a bearing or a parameter setting problem with its matching amplifier, and take corresponding measures to solve it. This type of inspection requires the use of troubleshooting methods. Firstly, separate each mechanical part from the servo motor and run the motor separately to see if there are any noise and temperature rise faults. If not, check the fault causes of other mechanical parts item by item.

3、 CNC system part

As we know, CNC system is the control core of precision vertical machining centers. Its maintenance is crucial. Maintenance items generally include CNC units, power modules, I/O interfaces, servo amplifiers, spindle amplifiers, operation panels, and displays. Mainly check whether the relevant voltage values are within the specified range; Whether the connection of electrical components is loose, etc;

4、 Measurement feedback element part

Generally speaking, measurement feedback devices include encoders, transfer detection elements, and so on. For precision vertical machining centers equipped with a full closed loop, it is necessary to detect components such as grating rulers, focusing on detecting whether the connection of each component is loose, and whether it is contaminated by oil or dust. Dust and fine iron filings are highly likely to damage such components.