After the installation and disassembly of the part on the shaft is determined, the shape of the shaft is generally determined, because the order of installation is: first install the middle rotor part, then place it on the box, then install the bearing The end cap, followed by the bearing and the outer bearing seat. The last two ends are the pulley and the flywheel.
The diameter of the shaft required for the diameter of each shaft segment is related to the amount of load on the shaft. While initially determining its diameter, it is usually not known about the point of action of the supporting force, and the magnitude and distribution of the bending moment cannot be determined. Therefore, the diameter of the main shaft cannot be determined by the specific load received on the shaft and the stress it causes. However, the torque of the main shaft can usually be obtained before the structural design. Therefore, the diameter of the desired shaft is initially estimated based on the torque of the shaft. Also note that the minimum diameter found at this time is . Then according to the assembly scheme and positioning requirements of the main shaft, the diameter of each shaft segment is determined one by one. In addition, the shaft diameter with the required requirements should be the standard diameter of the ball mill. For example, the shaft section where the bearing is installed and the shaft section where the standard part is installed should be taken as the corresponding standard diameter and the tolerance of the selected fit.
Determining the length of each segment of the spindle, making it as compact as possible, while also ensuring the required assembly and adjustment space for the rotor and pulleys, flywheels, bearings, that is, the length of each segment of the shaft determined, The axial dimension of the mating part of each part to the main shaft and the necessary clearance between adjacent parts must be taken into account. The front has been designed to calculate the general size of the rotor, flywheel, and pulley, so the length of the shaft can also be roughly determined.
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