Can the factory's strength be demonstrated by the details of component placement??
For many motor manufacturers, the placement of components is an unavoidable issue. If placed properly, the components will not be damaged. However, if placed improperly, it will not only affect the performance of the components and the entire machine, but also have adverse effects on the production site. Today, the editor will take you into Hengli Electric's warehouse to learn about it together
The number of components such as bearing covers and small end caps from motor manufacturers is relatively large; Manufacturers who are not particular about it will use a cannabis bag, which is a mess of countless items that cannot be seen clearly. However, Hengli Electric has taken necessary measures to facilitate storage and transportation.
The storage of motor components is a very important matter. For example, it is best to place the machine base vertically to avoid unsuitable stopping ports and inner bore diameters, especially for thin-walled machine bases. If stacked horizontally, the problem will be even more serious. Given the requirements for the overall performance of the motor, Hengli Motor has made relatively standardized requirements for the storage and transportation of components, as component compliance is a prerequisite for improving the overall product performance level.
Why do motor components deform?
The design of motor components is a very meticulous task. Whether it is the base or the end cover, it is not easy to achieve lightweight, beautiful, and deformation free design. Problems may occur in the design process, production and manufacturing process, or storage process,.
● Structural design. If the components are not designed completely according to the theory of structural mechanics, such as the size, shape, and position of the axial and radial ribs on the machine base, the overall design may be uneven. For the plate-shaped end cover, the distribution of reinforcement ribs, and the design of the protective motor end cover hollow window, etc.
● Processing reasons. For cast iron parts, the blank should have sufficient aging treatment before processing can begin; During metalworking, the clamping area and force are uneven, and when the clamping area is loosened, the machine base deforms due to rebound.
● Unreasonable storage. Compared with other components, the storage requirements for the machine base are relatively higher. We recommend placing the machine base vertically, which can save space by stacking a certain number of layers and prevent deformation of the machine base; On the contrary, if horizontal placement is adopted, especially multi-level stacking, the deformation of the machine base will be particularly severe, mainly including the machine base stopper and the elliptical or different axes of the inner bore.
The adverse effects of deformation of the machine base
Due to the existence of resonance phenomenon during motor operation, it often occurs at a certain speed and is fleeting during the starting process. Therefore, deformation of the machine base is not easily noticeable. The deformation caused by inadequate timeliness is also not easy to detect. If it is a welding machine base, it takes a long time to fully release the welding stress, so it is difficult to detect during processing, which is a typical quality hazard.
If the coaxiality of the two ends of the machine base exceeds the tolerance, the bearings at both ends of the motor will be damaged prematurely due to the inability to operate normally on the same axis. Uneven air gap between the stator and rotor, resulting in vibration and electromagnetic noise.
The feet are no longer on the same plane, which can easily damage the coaxiality with the dragged device. If it is firmly held by the foot bolt, it is easy to cause the foot to break.
The machine base is prone to uneven deformation in the radial direction. If the machine base contracts unevenly at the iron core due to deformation, the stator iron core will bear uneven radial forces. The more numerous the motors are, the greater the deformation amplitude due to the narrow stator yoke, and the smaller the air gap compared to 2- and 4-pole motors, so the problem of sweeping the bore is more likely to occur.
