In motor products, the shaft hole refers to the size of the rotor core and the shaft. Depending on the type of shaft, the size of the shaft hole is also different. When the shaft of the motor is a simple spindle, the size of the shaft hole of the rotor core is relatively small. , when the rotating shaft of the motor has a web-type structure, that is, several webs are evenly distributed on the main shaft of the motor, so that the matching size of the rotating shaft and the iron core is relatively large, and the shaft hole of the rotor iron core is naturally larger.
In the original article, we had a similar discussion. The size of the rotor shaft hole has a direct impact on the magnetic density of the rotor yoke. When the magnetic density of the rotor yoke is not too saturated and an ordinary magnetic shaft is used, it will have a direct impact on the motor. The performance of Performance is affected, and in severe cases, excessive current may even burn the motor.
The rotor ventilation holes will also affect the magnetic density of the rotor yoke. The impact on the motor performance is similar to the size of the shaft hole. However, unlike the shaft hole, the rotor ventilation holes will have a direct impact on the temperature rise of the motor. When the magnetic density of the rotor yoke is not saturated, adding rotor ventilation holes can improve the overall ventilation effect of the motor and effectively reduce the temperature rise of the motor.
In the actual design and manufacturing process of the motor, axial ventilation holes are generally added to the non-web shaft motor rotor stampings. However, for the web shaft motor rotor, in view of the relatively large rotor shaft hole and the natural fit between the iron core and the rotating shaft spindle, The dual function of the formed axial ventilation channel will not increase the number of axial ventilation holes.
From the overall analysis of product component design, the tendency guarantee of motor performance will be comprehensively evaluated through structural adjustment of components. Structural adjustment of components may be beneficial to a certain performance, but at the same time it is detrimental to other performances. may be disadvantageous, the overall effect improvement is equally important as is the evaluation of process realization.
Post time: Sep-27-2023