Servo limited angle torque motor for valve and method

Abstract

The present invention provides a valve servo motor with limited angle of rotation and its method, comprising a motor, a stator, a magnetic steel, an output shaft and a bushing I; There are small teeth, and the coil I is set in the small teeth; the middle part of the stator is provided with an inner hole, and the bush I is set in the inner hole by interference pressing, and the output shaft is connected with the bush I through a magnetic steel, and the magnetic steel is glued to the inner hole. connected to the output shaft. The motor of the present invention adopts a cogged structure design, the air gap length of the cogged structure motor is relatively short, the air gap magnetic density is high, and it can output high torque. , can effectively reduce the torque fluctuation caused by the cogging structure, and meet the requirements of the servo motor.

Description

technical field [0001] The invention relates to a valve-used servo limited-rotation-angle torque motor and a method, belonging to the technical field of limited-rotation-angle motors. Background technique [0002] The limited rotation angle motor is a part of the torque motor, and usually only plays a driving role. However, in the hydraulic valve, a certain torque is required during the opening process of the oil valve, and the flow of hydraulic oil needs to be controlled by the opening of the oil valve. In addition, the resistance generated by the oil during the opening process of the oil valve is inversely proportional to the opening angle of the oil valve. In the whole process, the motor has both output torque requirements and the characteristics of a servo motor. These two requirements are traditionally limited. Corner torque motor can not meet. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides ...

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Problems solved by technology

[0002] The limited rotation angle motor is a part of the torque motor, and usually only plays a driving role. However, in the hydraulic valve, a certain torque is required during the opening process of the oil valve, and the flow of hydraulic oil needs to be controlled by the opening of the oil valve. In addition, the resistance generated by the oil during the opening process of the oil valve is inversely proportional to the opening angle of the oil valve. In the whole process, the motor has both output torque requirements and the characteristics of a servo motor. These two requirements are traditionally limited. Corner torque motor can not meet

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