A novel stator structure for a 42mm five-phase stepper motor

Abstract

This utility model discloses a novel stator structure for a 42mm five-phase stepper motor. The stator structure has 10 poles, with pole one at the top and poles two, three, four, five, six, seven, eight, nine, and ten arranged clockwise. The included angle between pole one and pole two is 37.44°, between pole two and pole three is 33.84°, between pole three and pole four is 37.44°, between pole four and pole five is 33.84°, between pole five and pole six is ​​37.44°, between pole six and pole seven is 33.84°, between pole seven and pole eight is 37.44°, between pole eight and pole nine is 33.84°, and between pole nine and pole ten is 37.44°. The stator structure ensures that the five-phase stepper motor has a step angle of 0.36°. This invention redesigns the electromagnetic and mechanical components while maintaining the original frame size. The step angle of the motor has been reduced from 1.8° to 0.36°, significantly improving the step angle and meeting user application needs. It has a promising market prospect.

Description

Technical Field

[0001] This utility model discloses a novel stator structure for a 42mm five-phase stepper motor, belonging to the field of stepper motors. Background Technology

[0002] 42mm 2-phase stepper motors are widely used in security, video conferencing, medical, and industrial automation applications due to their high positioning accuracy, simple control, and low overall cost. However, with continuous product upgrades, high-end applications such as AI video conferencing and medical bioanalyzers demand very high step angle accuracy from the motors, and the current 1.8° step angle is no longer sufficient to meet user needs. Utility Model Content

[0003] The main purpose of this invention is to develop a 42mm five-phase stepper motor. Based on the original frame size, the electromagnetic and mechanical components of the motor have been redesigned. The step angle of the motor has been reduced from 1.8° to 0.36°, which greatly reduces the step angle and meets the application needs of users, thus having a good market prospect.

[0004] To ensure that the five-phase stepper motor has a step angle of 0.36°, the 10 poles of the stator cannot be designed with an average angle of 36°. The stator poles need to be offset to give the motor the required magnetic field. Under five-phase excitation, the motor generates a step angle of 0.36°.

[0005] The technical solution of this utility model is as follows:

[0006] A novel stator structure for a 42mm five-phase stepper motor is disclosed. The stator structure has 10 poles: pole one at the top, and poles two, three, four, five, six, seven, eight, nine, and ten in a clockwise direction. The included angle between pole one and pole two is 37.44°, between pole two and pole three is 33.84°, between pole three and pole four is 37.44°, between pole four and pole five is 33.84°, between pole five and pole six is ​​37.44°, between pole six and pole seven is 33.84°, between pole seven and pole eight is 37.44°, between pole eight and pole nine is 33.84°, and between pole nine and pole ten is 37.44°. This stator structure ensures a step angle of 0.36° for the five-phase stepper motor.

[0007] Preferably, each of the above poles has 7 teeth at its end, and the cross-sectional width of the teeth is 0.38±0.01mm.

[0008] Preferably, the cross-sectional width of the root of each of the above poles is 2.8 ± 0.02 mm.

[0009] Preferably, the angle between the bottom of the adjacent groove and the adjacent tooth is 1.845°±0.02°.

[0010] The beneficial effects of this utility model are:

[0011] This invention, through an optimized non-uniform magnetic pole angle offset design (alternating between 37.44° and 33.84° in an axisymmetric distribution), not only meets the magnetic field conditions required for a five-phase stepper motor to generate a fine step angle of 0.36°, but more importantly, this axisymmetric structural design ensures the feasibility of the stator core during the rotary riveting process. This design ensures the perpendicularity and parallelism of the stator core after riveting from the source, thereby significantly improving the manufacturing consistency and operational reliability of the product. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the stator of this utility model;

[0013] Figure 2 This is a schematic diagram of the stator teeth. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0015] like Figure 1 As shown, a stator structure of a novel 42mm five-phase stepper motor is provided. The stator structure has 10 poles: pole 1 at the top, followed by poles 2, 3, 4, 5, 6, 7, 8, 9, and 10 in a clockwise direction; the angle between pole 1 and pole 2 is 37.44°, the angle between pole 2 and pole 3 is 33.84°, and the angle between pole 3 and pole 4 is 37.44°. The angle between pole 4 and pole 5 is 33.84°, the angle between pole 5 and pole 6 is 37.44°, the angle between pole 6 and pole 7 is 33.84°, the angle between pole 7 and pole 8 is 37.44°, the angle between pole 8 and pole 9 is 33.84°, and the angle between pole 9 and pole 10 is 37.44°; the stator structure can ensure that the five-phase stepper motor has a step angle of 0.36°.

[0016] like Figure 2 As shown, each of the above poles has 7 teeth at its end, and the cross-sectional width of the teeth is 0.38±0.01mm.

[0017] Preferably, the cross-sectional width of the root of each of the above poles is 2.8 ± 0.02 mm.

[0018] Preferably, the angle between the bottom of the adjacent groove and the adjacent tooth is 1.845°±0.02°.

[0019] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel stator structure for a 42mm five-phase stepper motor, characterized in that, The stator structure is configured with 10 poles, with pole one at the top, and poles two, three, four, five, six, seven, eight, nine, and ten arranged clockwise. The included angle between pole one and pole two is 37.44°, the included angle between pole two and pole three is 33.84°, the included angle between pole three and pole four is 37.44°, the included angle between pole four and pole five is 33.84°, the included angle between pole five and pole six is ​​37.44°, the included angle between pole six and pole seven is 33.84°, the included angle between pole seven and pole eight is 37.44°, the included angle between pole eight and pole nine is 33.84°, and the included angle between pole nine and pole ten is 37.44°. The stator structure ensures that the five-phase stepper motor has a step angle of 0.36°.

2. The stator structure of a novel 42mm five-phase stepper motor according to claim 1, characterized in that, Each pole has 7 teeth at its end, and the cross-sectional width of the teeth is 0.38±0.01mm.

3. The stator structure of a novel 42mm five-phase stepper motor according to claim 2, characterized in that, The cross-sectional width at the root of each pole is 2.8 ± 0.02 mm.

4. The stator structure of a novel 42mm five-phase stepper motor according to claim 2, characterized in that, The angle between the bottom of the adjacent groove and the adjacent tooth between each tooth is 1.845°±0.02°.

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