Motor stator and rotor related introduction
To put it simply: the fixed part of the motor is called the stator, on which the pair of DC-excited stationary main poles are mounted; and the rotating part (rotor-rotor) is called the armature core, which is mounted on it. The armature winding generates an induced electromotive force after being energized, and acts as a rotating magnetic field to generate electromagnetic torque for energy conversion. The shape of the stator winding is distinguished from the embedding mode. The stator winding can be divided into two types according to the shape of the coil winding and the way of the embedded wiring. To put it simply: the fixed part of the motor is called the stator, on which the pair of DC-excited stationary main poles are mounted; and the rotating part (rotor-rotor) is called the armature core, which is mounted on it. The armature winding generates an induced electromotive force after being energized and acts as a rotating magnetic field. The electromagnetic torque is generated for energy conversion. The shape of the stator winding is distinguished from the embedded mode. The stator winding is different according to the shape of the coil winding and the embedded wiring. Divided into two types: centralized and distributed.
Performance characteristics of fixed rotor core
The fixed rotor core is a commonly used anti-interference component in electronic circuits, and has a good suppression effect on high frequency noise, and is generally made of a ferrite material. Many people don't know about the rotor core. In order to let you know more about our products and to increase your knowledge, Xiaobian introduces you to the performance characteristics of the stator core.
1. Low coercivity The initial magnetic permeability is high: it can reduce the operating current of the leakage switch.
2, high saturation magnetic induction: it is beneficial to choose a higher working magnetic induction point.
3, fixed rotor core high magnetic permeability: greatly improve the accuracy of the transformer, reduce the ratio difference.
4, light weight, low cost: the price is significantly better than permalloy.
5, has good anti-overload ability and good temperature stability: can work at 55--130 °C for a long time.
Factors affecting the layout of the rotor core
The fixed rotor core progressive die is a typical mold with high efficiency, high precision and long life, and its application range is wider and wider. As the key to the success of the mold design, the strip layout basically determines the structure of the whole mold and directly affects the production quality of the parts. There are many factors affecting the strip layout in actual production. Generally, the stator core progressive die is summarized as follows:
(1) Product structure. It is the most important factor affecting the layout. Generally include: 1 stator, rotor, sub-stator shape, size and accuracy requirements; 2 fixed rotor requirements loose or iron core (divided into stator, rotor must be riveted, a stack of riveting a piece, both are scattered ()), this will affect the design of the forming process and the blanking process; 3) Whether the rotor needs to be twisted, if it needs to be twisted, the position of the torsion mechanism needs to be considered, and the empty work station may need to be added during the layout.
(3) Type of layout. The layout is usually in single row, double row, or three rows. The material utilization rate is a major criterion.
(5) Mold structure factors. For products that need to be twisted and riveted, it is necessary to consider the space of the torsion mechanism, and it is often necessary to increase the empty work station. In the motor core progressive die, the punch is generally fixed on the punch fixing plate by using a pressing plate, and the pressing plate is connected by screws, and it is necessary to consider whether there is sufficient platen space when draining. Whether the core discharge method is exported by a belt or a guide cage output will affect the mold structure.
(6) Special requirements of customers. It is mainly the requirements of customers based on their own production conditions. For example, in order to reduce the cost, if the thickness of the silicon steel sheet material used for blanking has a thickness uniformity error, it is usually required to perform 180 large rotations during the lamination process to ensure the core height tolerance, which will affect the layout.
