Low-power two-phase alternating-current asynchronous servo motor

Abstract

The invention provides a low-power two-phase alternating-current asynchronous servo motor comprising a case and a rotor shaft. A rotor is arranged in the case; one end of the rotor is connected with a rotor shaft; a bearing is arranged at one side of the rotor shaft; and the other end of the stator core is provided with a bearing. A stator core is arranged above the rotor; and windings are respectively arranged at two sides of the stator core. Therefore, functions of quick starting, free speed regulation and shutdown are realized. The rotor manufacturing process is simple and the quality reliability is high. Because conducting bars are made from enamelled round copper wires and are inserted into rotor slots to form a double cage rotor, the motor has advantages of low starting current and high operation over-loading capability. Besides, the manufacturing becomes convenient and the process becomes simple; the conductivity of the rotor winding is ensured; the working efficiency is improved; and the manufacture cost of the rotor is lowered. The low-power two-phase alternating-current asynchronous servo motor is applied to a small-load servo system.

Description

Technical field [0001] The invention relates to a low-power two-phase AC asynchronous servo motor, which belongs to the technical field of motors. Background technique [0002] Asynchronous motors are used in various fields due to their simple structure, high reliability, easy manufacturing and operation and maintenance. Asynchronous motors are mostly used in occasions with stable speed and single load. In some servo systems with small loads, the motor is required With small moment of inertia, the motor can quickly start, adjust speed and stop. Conventional asynchronous motors cannot be used due to unadjustable speed. [0003] In the prior art, the rotor guide bars and end rings of conventional asynchronous motors are made of cast aluminum or cast copper to form a self-closing rotor winding. Due to the small space of the guide bars on the rotor, the fluidity of aluminum and copper is poor. The rotor guide bar manufactured by the cast aluminum or cast copper process is prone to qua...

AI Technical Summary

Problems solved by technology

[0002] Asynchronous motors are used in various fields because of their simple structure, high reliability, and convenient manufacturing, operation and maintenance. Asynchronous motors are mostly used in occasions with stable speed and single load. In some small-load servo systems, motors are required It has a small moment of inertia, and the motor can quickly start, speed regulation and stop. The conventional asynchronous motor cannot be used because the speed cannot be adjusted.

[0003] In the prior art, the rotor guide bars and end rings of conventional asynchronous motors are made of cast aluminum or copper, thus forming a self-closing rotor winding. Because of the small space for the guide bars on the rotor, the fluidity of aluminum and copper is poor. Rotor guide bars manufactured by casting aluminum or copper casting are prone to quality defects such as broken bars and air holes on the end rings, which will lead to a decrease in the conductivity of the rotor winding

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