Things to note before putting CNC machine tools into use

1. Understand how to use CNC machine tools

In order to avoid unnecessary failures during the use of CNC machine tools, CNC machine tool operators should read the relevant operating instructions carefully before using the CNC system, understand the performance of the CNC system in detail, and be proficient in the CNC system and The functions of each key, button and switch on the machine tool operation panel and the precautions for use.

2. The usage environment of CNC machine tools

1. In order to improve the service life of CNC machine tools, it is generally required to avoid direct sunlight or other thermal radiation.

2. Keep away from strong electromagnetic interference sources to ensure stable operation of the machine tool.

3. Avoid using it in an environment that is too humid or has a large temperature difference. For high-precision and expensive CNC machine tools, they should be used in air-conditioned rooms.

4. Avoid use in places with excessive dust or corrosive gas. Corrosive gases can easily corrode and damage electronic components, leading to poor contact or short circuits between components, affecting the normal operation of the equipment. 5. The machine tool should be kept away from equipment with large vibrations (such as punch machines, forging equipment, etc.). For high-precision machine tools, anti-vibration measures (such as anti-vibration grooves, etc.) should also be adopted.

3. Power requirements for CNC machine tools

1. CNC systems have strict requirements on power supply. Generally, the working voltage is required to be 220V±10%, and the fluctuation cannot be too large.

2. In order to avoid the impact of large power fluctuations and possible instantaneous interference signals, qualified enterprises can use dedicated power lines for CNC machine tools or add voltage stabilizing devices to reduce the impact of poor power supply quality and provide for the normal operation of CNC machine tools. Strong guarantee.

3. Before using the machine tool, confirm whether the specifications of the AC power supply meet the requirements and check the voltage, frequency and capacity of the AC power supply.

4. Inspection before powering on CNC machine tools

1. Machine tool electrical appliance inspection

Open the machine tool electrical control box and check whether the relays, contactors, fuses, servo motor speed, control unit socket, spindle motor speed control unit socket, etc. are loose.

If it is loose, it should be restored to normal state, and the connector with a locking mechanism must be locked. For machine tools with a transfer box, be sure to check the socket on the transfer box to see if the wiring is loose. If there is a locking mechanism, it must be locked.

2. CNC system circuit board inspection

Check whether the hardware settings on various printed circuit boards meet the requirements. Carefully check whether all connecting cables between the CNC device and the outside world are connected correctly and reliably according to the provisions of the connection technical manual provided with the machine.

Check various interface sockets, servo motor feedback line sockets, spindle pulse generator sockets, hand pulse generator sockets, etc. If they are loose, re-insert them. If there is a locking mechanism, be sure to tighten it.

Check the setting of the short-circuit terminals on each printed circuit board according to the technical manual or instruction manual. It must comply with the status set by the machine tool manufacturer. If there is indeed an error, it should be reset. Generally, there is no need to reset, but the user must correct the short-circuit. Keep original records of the terminal setting status.

3. Line connection quality inspection

Check connections, terminal blocks and individual printed circuit boards for tightness. Check whether it is inserted in place, whether each terminal is loose, and whether the fastening screws are tightened, because faults caused by defects are the most common.

Each terminal must be tightened once with a screwdriver until it can no longer be tightened. Each motor socket must be tightened.

4. Solenoid valve inspection

All solenoid valves must be pushed several times by hand to prevent malfunction caused by long-term de-energization. If any abnormalities are found, records should be kept for confirmation of repair or replacement after power is turned on.

5. Limit switch inspection

Check whether the movement of all limit switches is flexible and whether the fixation is firm. If any malfunction or loose fixation is found, deal with it immediately.

6. Check the buttons and switches on the operation panel

Check the wiring of all buttons, switches, and indicator lights on the operation panel. If any errors are found, deal with them immediately. Check the sockets and wiring on the display unit.

7. Ground wire inspection

CNC machine tools must have good ground wires to ensure equipment and personal safety and reduce electrical interference. Protective ground wires must be connected between servo units, servo transformers and strong current cabinets.

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