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Stainless Steel Crank Shaft
Material:Shaft
Motor micro motor shaft aluminum parts centering machining
Shape and size
Motor Micromotor shafts are usually elongated and cylindrical in shape. Its length generally ranges from a few millimeters to tens of millimeters, depending on the type of micromotor and the application scenario. The diameter is very small, usually around 0.5 - 5 mm, which is determined by the overall size of the micromotor.
The two ends of the shaft may have different shape designs. One end may have a flat keyway or a semi-circular keyway, which is used to install transmission gears, pulleys and other components to transmit power; the other end may have a special shape for installing the motor rotor, such as with a center hole or a special shoulder structure to ensure The rotor can be firmly mounted on the shaft.
Material properties
Generally, high-quality carbon structural steel is used, such as 45 steel. This kind of steel has good comprehensive mechanical properties, high strength, and can withstand a certain amount of torque and axial force. At the same time, its processing performance is good, making it easy to carry out machining operations such as turning and grinding to achieve the required dimensional accuracy and surface finish.
For some micro motor shafts that require higher wear resistance and fatigue resistance, alloy steel, such as 40Cr, may be used. Alloy steel adds a certain amount of alloy elements, such as chromium, to carbon structural steel, which can significantly improve the hardness, wear resistance and fatigue resistance of the shaft and extend the service life of the shaft.
2. Working principle
power transmission
The motor micromotor shaft is a key component of the motor's power output. When the motor is powered on, the rotor begins to rotate under the action of electromagnetic force, and the rotational motion of the rotor is transmitted to the shaft through a tight connection with the shaft. The shaft then transmits the power to the external load, for example, through the gears installed on the shaft meshing with the gears of other mechanical components, the rotational power of the motor is transmitted to the working mechanism to make it run.
Force analysis
During the working process, the micromotor shaft is mainly affected by torque, radial force and axial force. Torque is generated by the transmission of power, and its magnitude depends on the output power of the motor and the load it is driving. Radial force mainly comes from the gravity of components installed on the shaft (such as gears, pulleys, etc.) and the radial pressure generated during work. The axial force may come from the axial component of the motor's axial positioning device or transmission components (such as helical gears). Reasonable shaft structural design and material selection can ensure that the shaft works normally under the action of these forces and avoid failures such as deformation and breakage.
Consumer electronics field
Micro motor shafts are widely used in consumer electronics such as mobile phones and tablet computers. For example, the vibration motor shaft in a mobile phone. When the mobile phone receives notifications such as incoming calls and text messages, the motor drive shaft rotates and drives the eccentric wheel to rotate, thereby producing a vibration effect. Its small size and stable performance can meet the space and reliability requirements of consumer electronics products.
Medical equipment field
In some small medical equipment, such as micro syringes, dental treatment equipment, etc., the motor micro motor shaft plays an important role. Micro motor shafts can precisely control the moving parts of the equipment, enabling precise injection of medicines, precise operation of dental instruments, etc. Its high precision and good stability ensure the safety and effectiveness of medical equipment.
Automotive electronics field
Some electronic control systems in cars, such as electric rearview mirror adjustment, electric seat adjustment, etc., use micromotors. Micro motor shafts are responsible for transmitting power in these systems to achieve operations such as adjusting the angle of the rearview mirror lens and moving the seat position. It can work reliably in the complex electromagnetic environment and temperature environment of automobiles, ensuring the normal operation of automobile electronic systems.
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Material: Aluminum
Maximum diameter: 100 (mm)
Maximum length: 500 (mm)
Tolerance: 0.01-0.02 -
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Ningbo Yi Yi Precision Technology Co., Ltd.
Ningbo Yi Yi Precision Technology Co., Ltd. is leading China Motor micro motor shaft aluminum parts centering machining suppliers and OEM/ODM Motor micro motor shaft aluminum parts centering machining company, a combination of industry and trade enterprises, including Ningbo Xinhaocheng Precision Parts Co. With 1000 square meters of production plant and 30 employees. Its 2 companies focus on centering machine processing, production of precision non-standard parts, and has advanced imported equipment from Japan: STAR and Tsugami 5-9 axis centering machine, Citizen lathe, machining center and other equipment. The machine has the function of six-axis turning processing, which can complete drilling, turning, milling, tapping, boring, reaming, hobbing, shaping, etc. at one time, which can ensure the high precision, consistency and stable tolerance of shape of the parts. And according to the customer's needs, the power cutting tool function module with front and side milling function can be installed to complete the precision machining of complex shaft parts.
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