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Attention should be paid to the maintenance of CNC sawing machine after work, and the speed regulation should be completed by frequency converter

Time: March 16, 2020 Author: Ning Rui, Jinan Back to list

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CNC sawing machine is our common equipment, CNC sawing machine The manufacturer introduces the function of the product system here. The cutting direction of the saw blade is controlled by the guide rail control frame. After adjusting the self rotating bearing, the band saw blade is adjusted and straightened, and the sawing is swept away by the sweeper. The hydraulic cylinder piston rod supports the guide rail control frame to feed and cut the material. The CNC sawing machine is equipped with manual or hydraulic cylinder clamping locking organization, as well as the hydraulic operation valve switch. CNC sawing machine is a kind of sawing machine which uses circular band saw to cut materials. It is mainly divided into horizontal band sawing machine and vertical band sawing machine. CNC sawing machine is composed of several systems, including hydraulic transmission system, electrical control system, lubrication system, etc. In the case of hydraulic transmission system, the hydraulic circuit composed of pump, valve, oil cylinder, oil tank, pipeline and other auxiliary components ends the lifting of saw beam and clamping of workpiece under electrical control. Through the speed control valve, the feed speed can be adjusted steplessly to meet the sawing requirements of different materials.

After finishing, CNC saw machine maintenance should be completed. The maintenance of frequency converter can be divided into the following three aspects:

(1) record the operation data of frequency converter and CNC sawing machine motor every day, and compare with the normal operation state data, so as to find out the hidden danger in time.

(2) check the frequency converter every two weeks, mainly look at the output three-phase voltage and three-phase output current, and compare the balance between them. Check and record the ambient temperature and radiator temperature to see if there is vibration, sound and how the fan works?

(3) the frequency converter of CNC sawing machine should remove the dust and dirt in the internal and air path every quarter. Check each part of the frequency converter carefully to see if there is any abnormality. Parameters and wiring should be restored after maintenance.

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Motor is the core power of CNC sawing machine, which shows the importance of motor in the equipment. How to maintain the motor of CNC band sawing machine is a topic of concern to all equipment users. Our chief engineer introduced some methods to maintain the motor

1. In the PLC control system of CNC sawing machine, the normally open or normally closed action signal is introduced to the signal input terminal of PLC, and the start and stop of saw motor is controlled by program.

Second, use the temperature to maintain the saw machine motor, select thermal equipment or thermal resistance, measure the temperature of the motor by the thermoelectric corner, send the overheating signal through the temperature controller, and then maintain the motor.

3. Use the thermal relay to measure whether the current exceeds the rated current value of the NC band sawing machine motor. When the overload is reached, the motor will stop running and give an alarm signal, and then maintain the band saw machine motor.

4. According to the size of the motor power of the CNC sawing machine, select the appropriate current transformer, install it into the electric control box, and introduce the action signal into the control circuit. When the three-phase imbalance or the current is large, the thermal relay acts, and the control circuit is used to cut off the power supply.


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