CN110544994A - Stepping motor stator and stepping motor with same - Google Patents
Stepping motor stator and stepping motor with same Download PDFInfo
- Publication number
- CN110544994A CN110544994A CN201810521729.1A CN201810521729A CN110544994A CN 110544994 A CN110544994 A CN 110544994A CN 201810521729 A CN201810521729 A CN 201810521729A CN 110544994 A CN110544994 A CN 110544994A
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- stepping motor
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- motor
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- 238000004804 winding Methods 0.000 claims description 12
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to a stator of a stepping motor and the stepping motor with the stator, the stator is used for the stepping motor with a step angle of 3.75 degrees, the stator is square, octagonal or circular, the stator comprises a stator yoke part (101) and a plurality of stator main poles (1-8), each stator main pole (1-8) comprises a stator main pole part (1A-8A) and a stator pole shoe part (1B-8B), the stator pole shoe parts (1B-8B) are distributed with stator teeth (102), and each stator pole shoe part (1B-8B) is provided with three stator teeth (102). Compared with the prior art, the invention improves the utilization rate of the permanent magnetic field of the motor, and the stepping motor with the stator obtains larger motor output torque.
Description
Technical Field
The invention relates to the technical field of stepping motors, in particular to a stator of a stepping motor and the stepping motor with the stator.
background
The step motor is an induction motor, and its working principle is that it utilizes electronic circuit to change the direct current into time-sharing power supply, and utilizes multiphase time sequence to control current, and uses said current to supply power for step motor, and the step motor can normally work, and its driver is a multi-phase time sequence controller for time-sharing power supply of step motor. It must be composed of double ring pulse signal, power drive circuit, etc. to form control system. Therefore, the use of a stepping motor is not easy, and the stepping motor relates to a lot of professional knowledge of machinery, motors, electronics, computers and the like. The stepping motor is used as an execution element, is one of key products of electromechanical integration, and is widely applied to various automatic control systems. With the development of microelectronics and computer technologies, the demand of stepping motors is increasing day by day and the stepping motors are applied to various national economic fields.
The stepping motor mainly comprises a rotor and a stator, wherein the stator is provided with a plurality of stator main poles, the stator main poles are provided with stator teeth, the rotor of the motor is a permanent magnet, and when current flows through a stator winding, the stator winding generates a vector magnetic field. The magnetic field drives the rotor to rotate for an angle, so that the directions of a pair of magnetic fields of the rotor are consistent with the direction of a magnetic field of the stator. When the vector field of the stator rotates an angle. The rotor also rotates an angle with the magnetic field. Every time an electric pulse is input, the motor rotates one angle and advances one step. The angular displacement output by the motor is in direct proportion to the input pulse number, and the rotating speed is in direct proportion to the pulse frequency. By changing the sequence of the energization of the windings, the motor will reverse. The rotation of the stepper motor can be controlled by controlling the number of pulses, the frequency, and the sequence of energization of the motor phase windings.
A conventional two-phase 8-pole hybrid stepper motor configuration with 3.75 ° main pole pitch angle, as described in the accompanying fig. 1, includes: the stator comprises a motor stator 100, a plurality of stator main poles 1-8, stator teeth 102 and a stator yoke part 101, wherein the plurality of stator main poles 1-8 are composed of identical stator main pole parts 1A-8A and different stator pole shoe parts 1B-8B. The motor stator 100 has a square shape. The stator main pole parts 1A-8A are uniformly distributed in the circumferential direction, and the included angle between the stator main pole parts is 45 degrees. Stator teeth 102 are distributed on the stator pole shoes 1B-8B, wherein each stator pole shoe has two stator teeth 102, and the number of the stator teeth is 16. Rotor teeth 104 are uniformly distributed on the outer circumference of the stepping motor rotor 103, and the number of the rotor teeth is 24. In the stepping motor of the present 3.75 ° step angle, the ratio of the number of teeth of the motor stator to the number of teeth of the motor rotor is: 2 × 8/24, which is an approximate value of 0.67, and this value shows that in the structure of the stator of the conventional stepping motor, when the permanent magnetic field of the rotor of the motor flows to the stator side, the utilization rate of the permanent magnetic field of the motor is only 0.67, resulting in a small output of the motor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a stator of a stepping motor and the stepping motor with the stator, so that the utilization rate of a permanent magnetic field of the stepping motor is higher, and the output torque of the motor is larger.
The purpose of the invention can be realized by the following technical scheme:
The stator of the stepping motor is used for the stepping motor with a stepping angle of 3.75 degrees, the stator is square, octagonal or circular and comprises a stator yoke part and a plurality of stator main poles, each stator main pole comprises a stator main pole part and a stator pole shoe part, stator teeth are distributed on the stator pole shoe part, and each stator pole shoe part is provided with three stator teeth.
Preferably, the number of the stator main poles is eight, the eight same stator main pole parts are uniformly distributed in a circular ring shape, and the included angle between the eight same stator main pole parts is 45 degrees.
Preferably, the stator main pole part 1A and the stator pole shoe part 1B of one stator main pole 1 of the eight stator main poles coincide in center line, and the included angle between the center stator teeth of the adjacent stator main poles is as follows:
。
preferably, the pole shoes of the stator main pole 2 and the stator main pole 6 are of an elongated structure to facilitate winding of the motor.
Preferably, the stator main pole part 1A and the stator pole shoe part 1B of one stator main pole 1 of the eight stator main poles coincide in center line, and the included angle between the center stator teeth of the adjacent stator main poles is as follows:
。
Preferably, the stator main pole part 1A and the stator pole shoe part 1B of one stator main pole 1 of the eight stator main poles coincide in center line, and the included angle between the center stator teeth of the adjacent stator main poles is as follows:
。
Preferably, the pole shoes of the stator main pole 3 and the stator main pole 7 are of an elongated structure to facilitate winding of the motor.
Preferably, the stator main pole part 1A and the stator pole shoe part 1B of one stator main pole 1 of the eight stator main poles coincide in center line, and the included angle between the center stator teeth of the adjacent stator main poles is as follows:
。
Preferably, the pole shoes of the stator main pole 4 and the stator main pole 8 are of an elongated structure to facilitate winding of the motor.
A stepping motor comprises a stator and a rotor, wherein the stator is the stator of the stepping motor.
Compared with the prior art, the invention increases the number of teeth of the stator of each main pole of the motor, ensures that the total number of the teeth of the stator of the motor is equal to the number of the teeth of the rotor, and improves the ratio of the number of the teeth of the stator of the motor of the stepping motor with the stator to the number of the teeth of the rotor of the motor, so that when the permanent magnetic field of the rotor of the motor flows to the side of the stator, the utilization rate of the permanent magnetic field of the motor can reach 1 theoretically, the utilization rate of the permanent magnetic field of the motor is improved, and the stepping.
Drawings
Fig. 1 is a schematic structural view of a stator of a stepping motor and a stepping motor having the same according to the related art.
Fig. 2_1 is a schematic structural view of a stator of a stepping motor in embodiment 1 of the present invention.
fig. 2_2 is a schematic view of an extended structure of a pole shoe portion of a stator of a stepping motor according to embodiment 1 of the present invention.
Fig. 3_1 is a schematic structural view of a stator of a stepping motor in embodiment 2 of the present invention.
Fig. 3_2 is a schematic view of an extended structure of a pole shoe portion of a stator of a stepping motor in embodiment 2 of the present invention.
Fig. 4_1 is a schematic structural view of a stator of a stepping motor according to embodiment 3 of the present invention.
Fig. 4_2 is a schematic view of an extended pole shoe portion of a stator of a stepping motor according to embodiment 3 of the present invention.
Fig. 5_1 is a schematic structural view of a stator of a stepping motor according to embodiment 4 of the present invention.
fig. 5_2 is a schematic view of an extended pole shoe portion of a stator of a stepping motor according to embodiment 4 of the present invention.
fig. 6_1 is a schematic structural view of a stator of a stepping motor according to embodiment 5 of the present invention.
fig. 6_2 is a schematic view of an extended structure of a pole shoe portion of a stator of a stepping motor in embodiment 5 of the present invention
Fig. 7 is a schematic structural view of a stator of a stepping motor according to embodiment 6 of the present invention.
Wherein 100 is a motor stator, 1-8 are stator main poles, 101 is a stator yoke, 102 is a stator tooth, 103 is a motor rotor, 104 is a rotor tooth, 1A-8A are stator main pole parts, and 1B-8B are stator pole shoe parts.
Detailed Description
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
in example 1, as shown in fig. 2_ 1: a stepper motor stator, comprising: the stator comprises a motor stator 100, a plurality of stator main poles 1-8, stator teeth 102 and a stator yoke 101, wherein the plurality of stator main poles 1-8 comprise stator main pole parts 1A-8A and stator pole shoe parts 1B-8B. Stator teeth 102 are distributed on the stator pole shoes 1B-8B, and the stator pole shoes 1B-8B have three stator teeth 102 per stator pole shoe. Stator main pole 1 ~ 8 are at the circumferencial direction equipartition, and main pole portion 1A and pole shoe portion 1B center coincidence, the contained angle between every main pole center stator tooth as follows:
In embodiment 1, the pole shoe portions of the main pole 2 and the main pole 6 are extended as shown in fig. 2_2 as 2B 'and 6B', considering the winding of the motor.
In embodiments 2 to 4, the main pole part 1A and the pole shoe part 1B are both centrally overlapped, and the included angle between the central stator teeth of each main pole in each embodiment is as follows:
Example 2:
example 3:
Example 4:
Considering the winding of the motor, the pole shoes of the main poles 3 and 7 are extended in embodiments 2 and 3 as shown in fig. 3_2 and 4_2 as 3B 'and 7B'. The pole shoes of the main pole 4 and the main pole 8 are extended in embodiment 4 as shown in fig. 5_2 as 4B 'and 8B'.
the stators of the above 4 embodiments are all square in shape, and by taking the square stator embodiment 2 as an example, the outer diameter of the stator is changed into a circle, so that a circular stator embodiment 5 is obtained, as shown in fig. 6_1 and 6_ 2.
As shown in FIG. 7, the center lines of the stator main pole portions and the pole shoe portions all overlapped to obtain example 6, and the included angle between the main poles is
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The stator of the stepping motor is used for the stepping motor with a stepping angle of 3.75 degrees, is square, octagonal or circular and comprises a stator yoke part (101) and a plurality of stator main poles (1-8), each stator main pole (1-8) comprises a stator main pole part (1A-8A) and a stator pole shoe part (1B-8B), and stator teeth (102) are distributed on the stator pole shoe parts (1B-8B), and the stator pole shoe parts (1B-8B) are characterized in that three stator teeth (102) are arranged on each stator pole shoe part (1B-8B).
2. The stator of the stepping motor according to claim 1, wherein the number of the stator main poles (1-8) is eight, the eight same stator main pole parts (1A-8A) are uniformly arranged in a circular ring shape, and the included angle between the two stator main pole parts is 45 degrees.
3. A stator for a stepping motor according to claim 2, wherein the stator main pole portion 1A and the stator pole shoe portion 1B of one of the eight stator main poles (1-8) are coincident in center line, and the included angle between the central stator teeth (102) of the adjacent stator main poles is as follows:
。
4. A stator for a stepping motor according to claim 3, wherein the pole shoes of the stator main pole 2 and the stator main pole 6 are extended to facilitate winding of the motor.
5. a stator for a stepping motor according to claim 2, wherein the stator main pole portion 1A and the stator pole shoe portion 1B of one of the eight stator main poles (1-8) are coincident in center line, and the included angle between the central stator teeth (102) of the adjacent stator main poles is as follows:
。
6. A stator for a stepping motor according to claim 2, wherein the stator main pole portion 1A and the stator pole shoe portion 1B of one of the eight stator main poles (1-8) are coincident in center line, and the included angle between the central stator teeth (102) of the adjacent stator main poles is as follows:
。
7. a stator for a stepping motor according to any one of claims 5 or 6, wherein the pole shoes of the stator main pole 3 and the stator main pole 7 are of an elongated structure to facilitate winding of the motor.
8. A stator for a stepping motor according to claim 2, wherein the stator main pole portion 1A and the stator pole shoe portion 1B of one of the eight stator main poles (1-8) are coincident in center line, and the included angle between the central stator teeth (102) of the adjacent stator main poles is as follows:
。
9. The stator for a stepping motor according to claim 8, wherein the pole shoes of the stator main pole 4 and the stator main pole 8 are extended to facilitate winding of the motor.
10. A stepping motor comprising a stator and a rotor, wherein the stator is a stator of a stepping motor according to any one of claims 1 to 6 and 8 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521729.1A CN110544994A (en) | 2018-05-28 | 2018-05-28 | Stepping motor stator and stepping motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521729.1A CN110544994A (en) | 2018-05-28 | 2018-05-28 | Stepping motor stator and stepping motor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110544994A true CN110544994A (en) | 2019-12-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810521729.1A Pending CN110544994A (en) | 2018-05-28 | 2018-05-28 | Stepping motor stator and stepping motor with same |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6028377A (en) * | 1997-04-07 | 2000-02-22 | Japan Servo Co., Ltd. | Three-phase permanent magnet cascade claw type stepping motor |
| CN101232230A (en) * | 2007-01-25 | 2008-07-30 | 中国电子科技集团公司第二十一研究所 | Axial direction split-phase biphase (four phase) hybrid type stepping motor |
| JP2009213257A (en) * | 2008-03-04 | 2009-09-17 | Hitachi Ltd | Rotating electric machine |
| US20110309712A1 (en) * | 2009-02-27 | 2011-12-22 | Robert Chin | Stator with intermediate teeth |
| CN202334242U (en) * | 2011-11-25 | 2012-07-11 | 常州市运控电子有限公司 | Multi- pole mixed style stepping motor |
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| CN104079137A (en) * | 2014-07-08 | 2014-10-01 | 顾明 | Two-phase brushless direct current motor and sine stator |
| CN206272360U (en) * | 2016-12-08 | 2017-06-20 | 上海鸣志电器股份有限公司 | Stepper motor |
| CN206389193U (en) * | 2016-12-23 | 2017-08-08 | 上海鸣志电器股份有限公司 | two-phase hybrid stepping motor |
| CN207083002U (en) * | 2017-08-20 | 2018-03-09 | 东莞市景珑电机有限公司 | The stator and stepper motor of stepper motor |
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| CN208971255U (en) * | 2018-05-28 | 2019-06-11 | 上海鸣志电器股份有限公司 | Step motor stator and stepper motor with the stator |
-
2018
- 2018-05-28 CN CN201810521729.1A patent/CN110544994A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6028377A (en) * | 1997-04-07 | 2000-02-22 | Japan Servo Co., Ltd. | Three-phase permanent magnet cascade claw type stepping motor |
| CN101232230A (en) * | 2007-01-25 | 2008-07-30 | 中国电子科技集团公司第二十一研究所 | Axial direction split-phase biphase (four phase) hybrid type stepping motor |
| JP2009213257A (en) * | 2008-03-04 | 2009-09-17 | Hitachi Ltd | Rotating electric machine |
| US20110309712A1 (en) * | 2009-02-27 | 2011-12-22 | Robert Chin | Stator with intermediate teeth |
| US20120256514A1 (en) * | 2009-10-02 | 2012-10-11 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft | Brushless synchronous motor |
| CN202334242U (en) * | 2011-11-25 | 2012-07-11 | 常州市运控电子有限公司 | Multi- pole mixed style stepping motor |
| CN202334240U (en) * | 2011-11-25 | 2012-07-11 | 常州市运控电子有限公司 | Combined type stepper motor |
| CN202602512U (en) * | 2012-04-19 | 2012-12-12 | 常州市常华电机有限公司 | Circular mixed stepping motor |
| CN102664510A (en) * | 2012-05-21 | 2012-09-12 | 常州市旭泉精密电机有限公司 | Eight-pole stepping motor with large stepping angle being 3 degrees |
| CN103956871A (en) * | 2014-03-28 | 2014-07-30 | 广东威灵电机制造有限公司 | Stator punching piece and single-phase induction motor with same |
| CN104079137A (en) * | 2014-07-08 | 2014-10-01 | 顾明 | Two-phase brushless direct current motor and sine stator |
| CN206272360U (en) * | 2016-12-08 | 2017-06-20 | 上海鸣志电器股份有限公司 | Stepper motor |
| CN206389193U (en) * | 2016-12-23 | 2017-08-08 | 上海鸣志电器股份有限公司 | two-phase hybrid stepping motor |
| CN207124493U (en) * | 2017-08-14 | 2018-03-20 | 上海鸣志电器股份有限公司 | Step motor stator and the motor with the stator |
| CN207083002U (en) * | 2017-08-20 | 2018-03-09 | 东莞市景珑电机有限公司 | The stator and stepper motor of stepper motor |
| CN208971255U (en) * | 2018-05-28 | 2019-06-11 | 上海鸣志电器股份有限公司 | Step motor stator and stepper motor with the stator |
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