How to avoid the fatigue operation of the rotating diameter of the universal coupling?

How to avoid the fatigue operation of the rotating diameter of the universal coupling?

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The rotating diameter of the universal joint is professionally interpreted as the corresponding circumference of the movement trajectory of its outer end when the workpiece is rotating around a fixed axis. If it is turning a round workpiece, the rotation diameter of the universal coupling refers to the limit value of the outer diameter of the workpiece. When turning an eccentric workpiece, the rotation diameter of the universal coupling refers to the diameter of the movement track on the rotation center of the workpiece. To realize the smooth transmission of the universal joint, it is necessary to use 2 universal joints.

Because if a universal joint is used, the rotational speeds at the left and right ends are not equal, which will affect the smooth transmission and fluctuate. Therefore, use another universal joint to convert the fluctuating rotational speed into a stable rotational speed. Achieve their goals. The measurement of the coaxiality of the universal joint is an important task, so it cannot be treated carelessly. According to professional and technical personnel, generally four positions are evenly distributed on the end face and circumference of the universal coupling, and then the measurement work is performed.

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

How to avoid the fatigue operation of the rotating diameter of the universal coupling?

Universal coupling has the advantages of large transmission inclination, high efficiency, smooth transmission, low noise, small gap impact, large transmission torque, etc., especially under the correct technical control conditions, it can also obtain a long service life, so It has been increasingly adopted by various machinery. For example, the adoption rate of domestic rolling mills has reached about 70%, the maximum turning diameter is 1200mm, and the transmission torque is 3200kN.m.

The coupling is an important component connecting the prime mover and the working machine. Its damage will cause the machine to stop and even spread to the entire operation line, so its reliability is very high. The conditions of the cross-shaft universal coupling are often very harsh. For example, in the transmission of a rolling mill, because the diameter of the connected roll is limited, the rotation diameter of the coupling is also limited accordingly. The actual torque during the manufacturing process is often close to the fatigue torque of the coupling, and will be exceeded even if it is slightly improper. If this overload phenomenon occurs frequently, it will greatly reduce the fatigue life and cause premature failure or damage.

Cross-shaft universal joints have higher requirements on the spatial geometrical position. If improper, additional torques will appear. These additional torques will also reduce their life and affect their transmission efficiency. For large couplings, due to inadequate maintenance technology and improper adjustment of the balance system, additional loads equivalent to the torque level or greater, and some even break the cross shaft. Therefore, for such a core equipment, there must be comprehensive technical control to ensure its life.

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The maximum torque that the fatigue torque can withstand when working continuously for a long time; at this time, the temperature, the internal structure of the material, etc. have a greater impact;

If the two shafts of the universal coupling are not on the same axis, the universal coupling can be used, and there is no problem in use. Moreover, if there is an angle between the axes, the continuous rotation of the two connected shafts can be realized, and the torque can be reliably transmitted and normal movement can be performed. Cross-shaft universal coupling, if you compare it with ordinary universal couplings, then the outstanding advantage of this universal coupling is that it can connect two types of universal couplings on different axes. Transmission shaft system, and normal torque transmission and movement, so as to achieve the purpose of use and obtain a good use effect.

Encoder|Transmitter|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

How to avoid the fatigue operation of the rotating diameter of the universal coupling?

Different types of couplings are definitely different. For example, universal couplings require lubricants, while diaphragms and plum blossom couplings do not require lubricants. In addition, the shock absorption, wear resistance and cushioning properties of the plum coupling are better than the diaphragm coupling. The nominal torque of the universal coupling means that the coupling can transmit torque normally in a short time, while the fatigue torque refers to the long-term operation of the coupling under the condition that the number of cycles is very large. Torque can be transmitted normally. The small double cross shaft universal joint is a double section, and the small single cross shaft universal coupling is a single section. In addition, they are also different in applicable occasions.