CN108809041A - A kind of stepper motor - Google Patents
A kind of stepper motor Download PDFInfo
- Publication number
- CN108809041A CN108809041A CN201710307524.9A CN201710307524A CN108809041A CN 108809041 A CN108809041 A CN 108809041A CN 201710307524 A CN201710307524 A CN 201710307524A CN 108809041 A CN108809041 A CN 108809041A
- Authority
- CN
- China
- Prior art keywords
- rotor
- small tooth
- stator
- magnet steel
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 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
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
-
- 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
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to a kind of stepper motors, including stator core, rotor core and magnet steel, the stator core circumferencial direction is evenly distributed with several stator main poles, the inner end of each stator main pole has the small tooth of Ns stator, the rotor core circumferencial direction is evenly distributed with the small tooth of Nr rotor, 0.60*Dso≤Dsi, Dro≤0.75*Dso；0.85*Br*Nr≤Sm=π * (Dmo2‑Dmi2)/4≤2.0*Br*Nr；Dri≤Dmi；Wherein Dso is stator outer diameter, and Dsi is diameter of stator bore, and Dro is rotor diameter, and Br is the small tooth width of rotor, and Nr is the small tooth number of rotor, and Sm is that the magnetic surface of magnet steel accumulates, and Dmo is magnet steel outer diameter, and Dmi is magnet steel internal diameter, and Dri is rotor internal diameter.Compared with prior art, the present invention has many advantages, such as the harmonic wave for reducing back-emf, advantageously reduces the vibrating noise of motor.
Description
Technical field
The present invention relates to a kind of motors, more particularly, to a kind of stepper motor.
Background technology
Existing two-phase hybrid stepping motor structure as shown in Figure 1,1 circumferencial direction of stator core to be evenly distributed with several fixed
The inner end of sub- main pole 2, each stator main pole has the small tooth 3 of multiple stators, is Ns per the small tooth number of main pole stator, in stator
Portion is the rotor part of motor, and rotor part includes that two rotor cores 5 and a magnet steel 6 form, and magnet steel 6 is in two rotors
Centre, the small tooth number of rotor core is Nr, angular pitch Tr, and two rotor cores are rotated according to 1/2 angular pitch Tr
It laminates, rotor part and diameter of stator bore axle center having the same.
In figure, motor stator outline border (or outer diameter) is Dso, diameter of stator bore Dsi, rotor diameter Dro, the small facewidth of rotor
For Br, rotor internal diameter is Dri, and circle diameter where rotor slot bottom is Drs, and magnet steel outer diameter is Dmo, and magnet steel internal diameter is Dmi.
In conventional motors, in order to consider magnetic steel of motor utilization rate problem, Dmo≤Drs, Dri≤Dmi are generally removed；
When rotor tooth number 12≤Nr≤26, the back-emf of motor is illustrated in fig. 2 shown below, and back-emf is in wave crest and trough
There is flat-top in place, has larger harmonic wave,
Particularly, as the magnetic surface of magnet steel product Sm=π * (Dmo2-Dmi2When)/4 reduce, back-emf harmonic content will increase.
The increase of winding back emf harmonic wave can cause torque harmonic wave increase, influence the even running of motor, at the same have compared with
Big vibrations and noise.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of stepper motors.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of stepper motor, including stator core, rotor core and magnet steel, the stator core circumferencial direction are evenly distributed with
The inner end of several stator main poles, each stator main pole has the small tooth of Ns stator, the rotor core circumference side
To being evenly distributed with the small tooth of Nr rotor, 0.60*Dso≤Dsi, Dro≤0.75*Dso；0.85*Br*Nr≤Sm=π * (Dmo2-
Dmi2)/4≤2.0*Br*Nr；Dri≤Dmi；
Wherein Dso is stator outer diameter, and Dsi is diameter of stator bore, and Dro is rotor diameter, and Br is the small tooth width of rotor, and Nr is to turn
The small tooth number of son, Sm are that the magnetic surface of magnet steel accumulates, and Dmo is magnet steel outer diameter, and Dmi is magnet steel internal diameter, and Dri is rotor internal diameter.
The small tooth number of the rotor is：12≤Nr≤26.
The small tooth number Nr of the rotor is preferably 18.
The small tooth number Nr of the rotor is preferably 22.
The small tooth number Nr of the rotor is preferably 26.
The small tooth number Nr of the rotor is preferably 12.
The small tooth number Nr of the rotor is preferably 14.
The small tooth number Nr of the rotor is preferably 16.
Compared with prior art, the present invention has the following advantages：
(1) harmonic wave for reducing back-emf advantageously reduces the vibrating noise of motor, promotes the stationarity of motor operation；
(2) back-emf fundamental wave increases, and improves the output torque of motor.
Description of the drawings
Fig. 1 is existing two-phase hybrid stepping motor structural schematic diagram；
Wherein 1 is stator core, and 2 be stator main pole, and 3 be the small tooth of stator, and 4 be rotor core 5 be the small tooth of rotor, and 6 be magnetic
Steel, Dso are stator outer diameter, and Dsi is diameter of stator bore, and Dro is that rotor diameter Dri is rotor internal diameter, and Drs is rotor groover rot diameter,
Dmo is magnet steel outer diameter, and Dmi is magnet steel internal diameter, and Ns is stator primary minimum tooth number, and Nr is the small tooth number of rotor, and Tr is rotor tooth
Elongation, Br are the small tooth width of rotor.
Fig. 2 is existing winding back emf oscillogram；
Fig. 3 is motor of the present invention and existing winding back emf comparison of wave shape figure.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is a part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained without making creative work
Example is applied, the scope of protection of the invention should be all belonged to.
A kind of stepper motor, including stator core 1, rotor core 4 and magnet steel 6,1 circumferencial direction of stator core are equal
Cloth several stator main poles 2, and the inner end of each stator main pole 2 has the small tooth 3 of Ns stator, the rotor core
4 circumferencial directions are evenly distributed with the small tooth 5 of Nr rotor, 0.60*Dso≤Dsi, Dro≤0.75*Dso；0.85*Br*Nr≤Sm=π *
(Dmo2-Dmi2)/4≤2.0*Br*Nr；Dri≤Dmi；
Wherein Dso is stator outer diameter, and Dsi is diameter of stator bore, and Dro is rotor diameter, and Br is the small tooth width of rotor, and Nr is to turn
The small tooth number of son, Sm are that the magnetic surface of magnet steel accumulates, and Dmo is magnet steel outer diameter, and Dmi is magnet steel internal diameter, and Dri is rotor internal diameter.
The small tooth number of the rotor is：12≤Nr≤26.The small tooth number Nr of the rotor is preferably 12,14,16,
18,22 or 26.
In Fig. 3, when design new using the present invention, winding back emf fundamental wave significantly increases, and harmonic wave is substantially reduced.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain subject to.
Claims (8)
1. a kind of stepper motor, including stator core (1), rotor core (4) and magnet steel (6), the stator core (1) circumference
Direction is evenly distributed with several stator main poles (2), and the inner end of each stator main pole (2) has the small tooth of Ns stator (3), institute
Rotor core (4) circumferencial direction stated is evenly distributed with the small tooth of Nr rotor (5), which is characterized in that and 0.60*Dso≤Dsi, Dro≤
0.75*Dso；0.85*Br*Nr≤Sm=π * (Dmo2-Dmi2)/4≤2.0*Br*Nr；Dri≤Dmi；
Wherein Dso is stator outer diameter, and Dsi is diameter of stator bore, and Dro is rotor diameter, and Br is the small tooth width of rotor, and Nr is that rotor is small
Tooth number, Sm are that the magnetic surface of magnet steel accumulates, and Dmo is magnet steel outer diameter, and Dmi is magnet steel internal diameter, and Dri is rotor internal diameter.
2. a kind of stepper motor according to claim 1, which is characterized in that the small tooth number of the rotor is：12≤Nr
≤26。
3. a kind of stepper motor according to claim 2, which is characterized in that the small tooth number Nr of the rotor is preferably
18。
4. a kind of stepper motor according to claim 2, which is characterized in that the small tooth number Nr of the rotor is preferably
22。
5. a kind of stepper motor according to claim 2, which is characterized in that the small tooth number Nr of the rotor is preferably
26。
6. a kind of stepper motor according to claim 2, which is characterized in that the small tooth number Nr of the rotor is preferably
12。
7. a kind of stepper motor according to claim 2, which is characterized in that the small tooth number Nr of the rotor is preferably
14。
8. a kind of stepper motor according to claim 2, which is characterized in that the small tooth number Nr of the rotor is preferably
16。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307524.9A CN108809041A (en) | 2017-05-04 | 2017-05-04 | A kind of stepper motor |
| JP2018557095A JP6732392B2 (en) | 2017-05-04 | 2018-04-09 | Stepping motor |
| PCT/CN2018/082326 WO2018201854A1 (en) | 2017-05-04 | 2018-04-09 | Stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307524.9A CN108809041A (en) | 2017-05-04 | 2017-05-04 | A kind of stepper motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108809041A true CN108809041A (en) | 2018-11-13 |
Family
ID=64015784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307524.9A Pending CN108809041A (en) | 2017-05-04 | 2017-05-04 | A kind of stepper motor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6732392B2 (en) |
| CN (1) | CN108809041A (en) |
| WO (1) | WO2018201854A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7291102B2 (en) | 2020-05-08 | 2023-06-14 | オリエンタルモーター株式会社 | motor controller |
| JP7351819B2 (en) | 2020-09-24 | 2023-09-27 | オリエンタルモーター株式会社 | stepping motor drive device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05168214A (en) * | 1991-12-13 | 1993-07-02 | Oriental Motor Co Ltd | Stepping motor |
| CN1262807A (en) * | 1998-03-26 | 2000-08-09 | 精工爱普生株式会社 | Stepping motor, printing device using it or paper feeding device, and printer |
| 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 |
| CN101267129A (en) * | 2007-03-13 | 2008-09-17 | 株式会社日立制作所 | Stepping motor and steel plate for manufacturing the stepping motor |
| US20100033048A1 (en) * | 2008-08-09 | 2010-02-11 | Chia-Ming Chang | Hybrid Step Motor |
| JP2012044826A (en) * | 2010-08-23 | 2012-03-01 | Minebea Motor Manufacturing Corp | Hybrid type stepping motor |
| CN102904413A (en) * | 2011-07-29 | 2013-01-30 | 信浓绢糸株式会社 | Hybrid stepping motor |
| CN203339925U (en) * | 2012-03-23 | 2013-12-11 | 美蓓亚株式会社 | Hybrid stepping motor |
| JP2014236576A (en) * | 2013-05-31 | 2014-12-15 | 日本電産サーボ株式会社 | Inner rotor motor |
| JP2016144336A (en) * | 2015-02-03 | 2016-08-08 | セイコーインスツル株式会社 | Stepping motor and clock |
| CN207053359U (en) * | 2017-05-04 | 2018-02-27 | 上海鸣志电器股份有限公司 | Stepper motor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006020461A (en) * | 2004-07-02 | 2006-01-19 | Japan Servo Co Ltd | Multipole rotary electric machine |
| JP4280590B2 (en) * | 2003-09-25 | 2009-06-17 | 株式会社日立製作所 | Abduction type hybrid 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 |
| JP6045804B2 (en) * | 2012-03-23 | 2016-12-14 | ミネベア株式会社 | Hybrid stepping motor |
| CN202586676U (en) * | 2012-05-18 | 2012-12-05 | 上海博建电子科技有限公司 | Rotor used for hybrid stepping motor |
| CN104598688B (en) * | 2015-01-27 | 2017-10-31 | 中国电子科技集团公司第二十一研究所 | The two dimensional finite element emulation mode of composite stepper motor |
-
2017
- 2017-05-04 CN CN201710307524.9A patent/CN108809041A/en active Pending
-
2018
- 2018-04-09 WO PCT/CN2018/082326 patent/WO2018201854A1/en active Application Filing
- 2018-04-09 JP JP2018557095A patent/JP6732392B2/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05168214A (en) * | 1991-12-13 | 1993-07-02 | Oriental Motor Co Ltd | Stepping motor |
| CN1262807A (en) * | 1998-03-26 | 2000-08-09 | 精工爱普生株式会社 | Stepping motor, printing device using it or paper feeding device, and printer |
| 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 |
| CN101267129A (en) * | 2007-03-13 | 2008-09-17 | 株式会社日立制作所 | Stepping motor and steel plate for manufacturing the stepping motor |
| US20100033048A1 (en) * | 2008-08-09 | 2010-02-11 | Chia-Ming Chang | Hybrid Step Motor |
| JP2012044826A (en) * | 2010-08-23 | 2012-03-01 | Minebea Motor Manufacturing Corp | Hybrid type stepping motor |
| CN102904413A (en) * | 2011-07-29 | 2013-01-30 | 信浓绢糸株式会社 | Hybrid stepping motor |
| CN203339925U (en) * | 2012-03-23 | 2013-12-11 | 美蓓亚株式会社 | Hybrid stepping motor |
| JP2014236576A (en) * | 2013-05-31 | 2014-12-15 | 日本電産サーボ株式会社 | Inner rotor motor |
| JP2016144336A (en) * | 2015-02-03 | 2016-08-08 | セイコーインスツル株式会社 | Stepping motor and clock |
| CN207053359U (en) * | 2017-05-04 | 2018-02-27 | 上海鸣志电器股份有限公司 | Stepper motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018201854A1 (en) | 2018-11-08 |
| JP2019516339A (en) | 2019-06-13 |
| JP6732392B2 (en) | 2020-07-29 |
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