The aluminum electric motor housing has good ductility and low specific gravity, and also has the advantages of light weight, high strength, good heat dissipation performance, beautiful surface, corrosion resistance, and cutting-free inner bore. When installing the electric drive motor, the wiring of the motor is important. If the wires are connected incorrectly, it may bring a series of unnecessary troubles. In the process of wiring, the aluminum electric motor housing should be grounded, otherwise, the harm will be very serious.
1. When the insulation of the motor stator winding is poor, aging or when the stator winding collides with the aluminum electric motor housing, the housing will be charged, and has a high voltage to the ground.
2. If the motor does not have a grounding wire, a strong current will flow into the ground through the human body when touching the aluminum motor housing, causing personal injury or death.
EMP Tech Co.,Ltd is a global full-service manufacturer that provides precision aluminum die-casting products with more than 20 years of experience in R&D, manufacturing and precision processing in the industry. We are proud to cooperate with some of the world's top automotive, engineering, electronics and telecommunications companies. The aluminum electric motor housings we produce have already played an important role in new energy vehicles, buses and trucks. If you have purchase needs, please feel free to contact us.
As the benefits and proportion of motor housing production become increasingly prominent in the manufacturing industry, it is very necessary to understand and master the design and manufacturing process of motor housings.
Deep drawing is a processing method in which punched flat blanks are pressed into hollow pieces with various openings or the finished hollow pieces with openings are processed into hollow pieces of other shapes.
The force process of the motor housing deepening is similar to the change of the fan-shaped blank being pulled through a wedge-shaped slot. While being elongated in the diameter direction, the tangential direction is compressed. In the actual drawing process, of course, there are no wedge-shaped grooves, and the fan-shaped small unit bodies on the blank do not exist alone but are in an interconnected and tightly integrated whole blank.
The thickness of the workpiece obtained after the deep drawing is different from the bottom to the mouth.
The thickness of the upper part of the sidewall of the cylinder increases the most, about 30%; the thickness of the sheet is the smallest at the corner of the cylinder wall and the bottom, and the thickness is reduced by nearly 10%, where it is most likely to be broken during deep drawing. When the stress of the section exceeds the strength limit of the material at this time, the part will crack here. Even if the drawn part is not cracked, the product may be scrapped due to excessive thinning of the material.
At present, a large-area motor casing is being processed.
The original process is to align the shape of one end to straighten the middle, position the hole, and process the end to form the motor casing through the four-jaw clamp for vertical vehicles. When this method is not easy to operate and the vertical processing is not accurate, the production efficiency is low. How to shorten its production cycle, improve labor productivity, and reduce its production cost under the premise of ensuring the quality of parts processing is particularly important.
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