Correct use of imported bearings can achieve fatigue life. However, if an accidental early injury occurs, it can no longer be used normally. Unlike fatigue life, this early damage is called a failure or accident. Most of them are caused by poor considerations in installation, use, and lubrication, foreign objects that have intruded from the outside, or insufficient research on shafts and housings. The cause of bearing damage may be insufficient lubricant, improper grade, defective oil supply and drainage structure, foreign material intrusion, installation error of the bearing, or excessive deflection of the shaft. It may also be due to the above causes.
When the bearing is used for a period of time, the inner ring, body, cage, outer ring, raceway, etc. of the bearing will cause certain defects, the bearing of the bearing will be badly damaged due to scars, and the bearing will generate heat and prolonged heating will result in: (1 ) Dilution of bearing lubricating oil. (2) Accelerate the fatigue of the material and decrease the hardness. Due to the above reasons, a vicious circle is further formed, accelerating the overheating and burning the bearing. Severely, the inner ring of the imported bearing is distorted. Therefore, when running on the line, if you find that the bearing has serious heat, smoke, do not stop, but should keep running to the front of the station, because at this moment the bearing is in a molten state, and once it is stopped and cooled, it can no longer walk and block the line.
It is very important for the maintenance of the oil bearing of the locomotive bearing, especially the proper amount of refueling for the imported bearing can guarantee the good lubrication of the bearing. The lack of oil and too much refueling can easily lead to the bearing failure. The addition of less oil can easily lead to poor lubrication of the bearing. The addition of heat can also cause overheating of the mixing. Therefore, it is important to maintain proper oil supply during the maintenance process. At the same time, it is also very important to clean the grease of the bearing. Once the grease has fallen into other impurities and moisture, it will affect the normal clearance and Establish the necessary oil film.
The use of the bearing for a long time exceeds the service life of the bearing and can easily cause the fatigue of the material. It also causes the material to be deformed due to the strong impact. The roller and the raceway surface are peeled off. Big.
The mismatching clearance of the inner ring of the bearing and the shaft is inconsistent with the clearance. It is also very easy to cause bearing failure. The large amount of interference can easily cause the inner ring of the bearing to crack due to excessive tensile stress. The small amount of interference is also very easy to cause. The bearing inner ring "relaxed."
Improper fit of the imported bearing assembly with clearance is also likely to cause bearing failure. Small clearance is very easy to cause friction and heating of the roller and raceway. With increasing temperature, the bearing inner ring, body, cage, outer ring, end cap The temperature is not the same, there is a temperature difference between each other, and therefore the amount of expansion is also slightly different, which also results in a further reduction of the fit clearance and increases the heat generated by the bearing. If the clearance is too large, the vibration of the roller increases, and the impact of the roller and the raceway is increased. At the same time, the internal load distribution is uneven, the load roller is reduced, and the central roller load is excessive.
When assembling the bearing, the copper bearing was not used to impact the bearing and cause the holder to deform due to the impact of the process. Incorrect installation of the inner and outer rings of the traction motor bearing or other reasons caused the axial traverse moment to disappear, causing the bearing shaft to become crushed.
Therefore, we must fully understand the use of bearings on the basis of the machine, working conditions and its peripheral structure to find out the situation before and after the occurrence of failure, combined with the damage of imported bearings and a variety of related reasons for analysis, can prevent similar failures again.
2023 New Hot Sale Fiber Laser Cutting Machine A Series
The imported helical gear design of the reducer can withstand greater torque than the general straight tooth output.
High precision, small product volume, low noise, fully enclosed design, to ensure that the lubricating grease does not leak, and the transmission efficiency is as high as 95%.
The internal components are made of alloy steel, which can cope with various harsh environments.
Laser head structure
1.The Z axis refers to the direction in which the laser head moves up and down
2.Structural composition: 1. Servo motor; 2. Guide rail slider; 3. Mounting seat; 4. Laser head, etc.
3.Structure introduction: It can adapt to different specifications of pipes by adjusting the up and down movement of the laser head.
4.Structural advantages: the mechanism is simple, stable and easy to operate.
The Z-axis can be both follow-up and numerically controlled: in order to solve the problem that the laser focus fluctuates due to the uneven surface of the pipe, which affects the cutting quality, the cutting head (Z-axis) must follow to keep the focus constant. In addition to the follow-up function, the Z axis of the cutting machine also has the same display and control functions as the X and Y axis.
Graphic display: The machine has the functions of analog graphic display and dynamic graphic tracking display for the edited part program, which makes the processing more intuitive and easy to monitor and control.
Multiple alarm functions: The CNC system of the machine has the functions of self-checking, alarming and automatic protection, and also has alarm display and automatic protection for external conditions.
CNC control system: The system adopts an integrated structure, central control and display operation unit structure. The system is based on windows CNC system. The display operation unit provides a good man-machine interface and displays various operation information. The operation panel has function keys for machine tool operation.
Low-voltage electrical system: The low-voltage electrical system is located in the electric control cabinet, which is the interface part of the electrical control of the whole machine. The power supply, relays, circuit breakers, contactors, and servo drive systems required by the electrical control system are installed in the electric control cabinet.
Using high-quality stainless steel cold water circulating pump, large flow, high lift, low noise, long life; stainless steel water tank, pipeline, stainless steel valve will never worry about rust.
The control system adopts LCD full Chinese (or full English) computer controller, CPU automatic control, simple and intuitive operation. The control accuracy is as high as ±0.1℃; it has the function of automatic fault diagnosis, which directly displays the fault point on the screen, prompting the user to deal with it quickly. And the fault signal can be directly transmitted to the CNC numerical control system through the data line to avoid damage to components and equipment.
Provides multiple protection functions, passive alarm terminals, and remote control terminals, which are easy to realize centralized control and monitoring of CNC; among them, the "dual temperature type" precision water cooler provides stable and accurate water temperature control for the laser, and also provides a channel with The water temperature similar to the ambient temperature is used for lens cooling, which solves the problem of damage to the lens caused by condensation when cooled with low-temperature water, and is the best choice for cooling the entire laser equipment.
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GUANGDONG CHITTAK INTELLIGENT EQUIPMENT CO.,LTD , https://www.ctklasercutting.com