Stepping motor

Abstract

The invention discloses a stepping motor and relates to the technical field of driving devices. The stepping motor comprises an upper motor shell, a lower motor shell, a rotor, two iron cores and two wire winding shafts, wherein the iron cores comprise fixed rings and a number of iron core pole teeth that are arranged along inner circumferences of the fixed rings at an interval, the iron core pole teeth extend axially, the fixed rings of the two iron cores contact directly with each other in such a way that iron core pole teeth on the two iron cores face toward opposite directions, each wire winding shaft correspond to one iron core, and a number of motor shell pole teeth are arranged on inner side walls of the upper motor shell and the lower motor shell at an interval; during assembling operation, first motor shell pole teeth are plugged among iron core pole teeth of one iron core corresponding thereto, and second motor shell pole teeth are plugged among iron core pole teeth of the other iron core corresponding thereto. The stepping motor is advantaged by small magnetic excitation resistance, high control precision, low driving noise, simple structure and the like; the stepping motor is suitable for the field of low frequency and medium-high frequency continuous driving.

Description

technical field [0001] The invention relates to the technical field of driving devices, in particular to a stepping motor with small excitation resistance and high control precision. Background technique [0002] At present, the 8mm diameter stepping motor (motor) used for security monitoring is a conventional 18-degree stepping motor (motor). The electrical characteristics of the used motor (motor) mainly include: Max starting frequency, Max continuous Response frequency (Max. slewing frequency), pull-in torque (Pull-in torque), pull-out torque (Pull-out torque), affected by the accuracy of the existing structure, the motor is limited to ordinary precision machine components, and the step accuracy needs to be improved It can only change the excitation mode: change from the original (2-2, two-phase-two-phase) to (1-2, single-two-phase) drive or use a subdivision controller to drive to meet the required requirements; The circuit design of the drive equipment is complex, the ...

AI Technical Summary

Problems solved by technology

[0002] At present, the 8mm diameter stepping motor (motor) used for security monitoring is a conventional 18-degree stepping motor (motor). The electrical characteristics of the used motor (motor) mainly include: Max starting frequency, Max continuous Response frequency (Max. slewing frequency), pull-in torque (Pull-in torque), pull-out torque (Pull-out torque), affected by the accuracy of the existing structure, the motor is limited to ordinary precision machine components, and the step accuracy needs to be improved It can only change the excitation mode: change from the original (2-2, two-phase-two-phase) to (1-2, single-two-phase) drive or use a subdivision controller to drive to meet the required requirements; The circuit design of the drive equipment is complex, the cost is high, and it depends on the software to drive and control the motor. The accuracy of the motor is affected by the circuit. The motor output torque is unstable and cannot be applied to high-precision products.

In the process of use, there will be disadvantages such as instability of driving accuracy and reduction of output torque.

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