CN101510707B - Preparation method of non-groove brushless DC motor rotor - Google Patents
Preparation method of non-groove brushless DC motor rotor Download PDFInfo
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- CN101510707B CN101510707B CN 200910103422 CN200910103422A CN101510707B CN 101510707 B CN101510707 B CN 101510707B CN 200910103422 CN200910103422 CN 200910103422 CN 200910103422 A CN200910103422 A CN 200910103422A CN 101510707 B CN101510707 B CN 101510707B
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Abstract
The invention provides a fabrication method for a slotless and brushless DC (direct current) motor, which includes the fabrication of a rotor and a stator and is characterized in that the rotor of the motor is prepared with the rare earth of samarium cobalt. The rare earth of samarium cobalt which is fragile and hard to process is used as the material for the stator of the motor, and by the process steps of the invention, the stator of the motor which has good high temperature resistance and is not easy to break up and demagnetize is fabricated, thus solving the problem that the motor is easy to demagnetize at high temperature and the small-sized high-speed micro motor magnetic steel is fragile, thus improving the performance of the motor.
Description
Technical field
The present invention relates to a kind of preparation method of rotor, relate in particular to a kind of preparation method of non-groove brushless DC motor rotor.
Background technology
Requirement for rotating speed of motor and torque in the medical industry is very high, when especially being applied to the accurate cutting equipment of neurosurgery organ, needs motor that extra high rotating speed, well smoothness and accurate start and stop are arranged.At present, the motor of prior preparation method preparation, power to volume ratio is little; High-temperature sterilization is demagnetized easily repeatedly; When high speed rotating, centrifugal force is very big, breaks easily, influences the overall performance of motor etc.; And can not satisfy the requirement of overall disinfection when being used to perform the operation.
Summary of the invention
The object of the present invention is to provide that a kind of rotor performance is good, the preparation method of the brushless slotless DC motor that is not easy to demagnetize.
The object of the present invention is achieved like this: a kind of preparation method of brushless slotless DC motor, comprise preparation rotor and stator, and it is characterized in that: described rotor adopts the SmCo rare earth material to make.Its concrete processing step can be when adopting the SmCo rare earth to be the material preparation rotor, with the first line cutting of described SmCo rare earth, after initial processing becomes tubular body, goes up high-precision grinder again, and polishing makes magnet ring.
Because the SmCo rare earth material is more crisp, in order to make rotor under the condition that runs up, be not easy to break, rotor is packed in the electric machine main shaft, after cementing with high-temperature adhesives, in the stainless steel outer sleeve of more described rotor being packed into, thereby powerful centrifugal force is organized structural damage to rotor when having overcome because of high speed rotating.
The preparation method of the rotor among the preparation method of above-mentioned brushless slotless DC motor in turn includes the following steps: a, the SmCo rare earth material is carried out line cutting, after initial processing becomes tubular body, go up high-precision grinder again, the polishing cylindrical make magnet ring, bonding then, magnetize rotor; B, with the rotor electric machine main shaft of packing into, cement with adhesive; C, the electric machine main shaft that assembles and rotor at high temperature toasted be cured processing; After being cooled to normal temperature after d, the baking, smear adhesive at rotor surface, in the stainless steel outer sleeve of more described rotor being packed into; The rotor of e, the stainless steel outer sleeve of will packing at high temperature baking-curing is cooled to normal temperature after handling again; F, rotor is carried out dynamic balancing regulate, described dynamic balancing is regulated and is adopted dynamic balance instrument to regulate, and when the dynamic balancing of rotor does not meet the demands, can the dynamic balancing ring be installed in the one or both ends of electric machine main shaft and regulate.
Baking is meant under 260 ± 20 ℃ condition and toasted 3 hours ± 10 minutes under the high temperature described in the step c; Baking is meant under 260 ± 20 ℃ condition and toasted 3 hours ± 10 minutes under the high temperature described in the step e; Adhesive described in step b and the steps d is high-temperature adhesives.
After rotor carried out dynamic balancing and regulate, the high-speed bearing of packing at the motor shaft two ends; Again rotor is put into the motor stator shell, screwed the motor front end housing.
In order further to improve the performance of motor stator, the preparation method of motor stator is included in the track ring outside and turns to stator winding with enamelled wire among the preparation method of above-mentioned brushless slotless DC motor, described stator winding is with bifilar enamelled wire coiling, and each armature coil shape approximation " 8 " font in the described stator winding.
In order to alleviate copper loss, the problem of improving that the motor feels hot, described enamelled wire is army's grade enamelled wire or high-quality enamelled wire.
Among the preparation method of described brushless slotless DC motor the preparation method of motor stator also comprise with described stator winding through high temperature dipping lacquer, constant temperature keep, be cooled to room temperature, the electric machine casing of packing into encapsulation and solidify setting, be cooled to room temperature at last again.
Described high temperature dipping lacquer is meant that stator winding soaked 1～2 hour in temperature is 80～120 ℃ lacquer; Described constant temperature keeps being meant with taking-up drains through the stator winding behind the high temperature dipping lacquer, kept under 180 ± 20 ℃ condition 60 ± 20 minutes; The described electric machine casing encapsulation of packing into is to adopt epoxy encapsulation; Described curing setting is with the electric machine casing after the encapsulation, places under 260～300 ℃ the condition to keep 40～60 minutes.
Described high temperature dipping lacquer temperature is preferably 100 ℃.
Beneficial effect of the present invention is:
1, will be easily crisp, the SmCo rare earth that is difficult to process of inventor is as the material of making rotor, adopt processing step of the present invention, prepare the rotor that high temperature resistant property is good, be difficult for demagnetization, solved the difficult problem that motor demagnetizes easily under hot conditions, improved motor properties;
2, because the SmCo rare earth material is more crisp, breakage easy to crack during high speed rotating, the inventor puts the stainless steel protection cover in the rotor outside especially, thereby powerful centrifugal force is organized structural damage to rotor when having avoided because of high speed rotating, make motor when running up as rotating speed up to 64000r/min, rotor also is not easy to break, and has improved motor performance, has improved the life-span of motor;
3, because the motor stator winding among the present invention is to adopt army's grade or the bifilar enamelled wire coiling of high-quality, and adopted the structure of each the armature coil shape approximation figure of eight in the stator winding, make its this stator winding be used for motor run up as rotating speed up to 64000r/min the time can reduce the wastage the problems of excessive heat when having avoided motor to run up for a long time;
4, adopt epoxy resin that stator winding and electric machine casing are packaged into one among the present invention, make the structure of stator more stable, also be convenient to motor when running up simultaneously, its stator winding dispels the heat by electric machine casing; Solved the problem of motor sterilization in addition again, made that motor can stand for a long time, the repeated multiple times high-temperature sterilization, and can be immersed in the water and work;
5, the present invention can prepare the brshless DC motor of a kind of big torque, high rotating speed, small size, this motor can be applied in the medical industry as the accurate cutting equipment of neurosurgery organ, this rotating speed of motor can be up to 64000r/min, and breakdown torque is 100mN.m, and external diameter has only 20mm.
Description of drawings
Fig. 1 is the stator winding structure schematic diagram of the embodiment of the invention 1.
Specific implementation method
Mode below by embodiment further specifies the inventive method, but does not therefore limit the present invention in the described scope of embodiments.
As shown in Figure 1, a kind of preparation method of brushless slotless DC motor comprises preparation rotor and stator:
Wherein the preparation method of rotor in turn includes the following steps: a, the SmCo rare earth material is carried out line cutting, after initial processing becomes tubular body, goes up high-precision grinder again, polish and make magnet ring, bonding then, magnetize rotor; B, with the rotor electric machine main shaft of packing into, cement with high-temperature adhesives; C, the electric machine main shaft that assembles and rotor toasted under 260 ℃ condition be cured processing in 3 hours; After being cooled to normal temperature after d, the baking, smear high-temperature adhesives at rotor surface, in the stainless steel outer sleeve of more described rotor being packed into; The rotor of e, the stainless steel outer sleeve of will packing into was cooled to normal temperature after the cured in 3 hours again in baking under 260 the condition; F, rotor is carried out dynamic balancing regulate;
After rotor carried out dynamic balancing and regulate, the high-speed bearing of packing at the motor shaft two ends; Again rotor is put into the motor stator shell, screwed the motor front end housing;
Wherein the preparation method of motor stator is included in track ring 1 outside and turns to stator winding 2 with enamelled wire, it is characterized in that: described stator winding 2 is with the grade enamelled wire coiling of bifilar army, and each single-turn circular coil shape approximation " 8 " font in the described stator winding 2; Described coiling is one group of stator winding for using coil winding machine coiling, coiling 160 circles, and coiling is 6 groups altogether; It also comprise with described stator winding through high temperature dipping lacquer, constant temperature keep, be cooled to room temperature, the electric machine casing of packing into encapsulation and solidify setting, be cooled to room temperature at last again; Described high temperature dipping lacquer is meant that stator winding is to soak 1.5 hours in 100 ℃ the lacquer in temperature; Described constant temperature keeps being meant with taking-up drains through the stator winding behind the high temperature dipping lacquer, kept 60 minutes under 180 ℃ condition; The described electric machine casing encapsulation of packing into is to adopt epoxy encapsulation; Described curing setting is with the electric machine casing after the encapsulation, places under 280 ℃ the condition to keep 50 minutes.
A kind of preparation method of brushless slotless DC motor, its basic step are with embodiment 1, and concrete technological parameter sees Table 1.
Concrete technological parameter among table 1 embodiment 2～4
Claims (8)
1. the preparation method of a brushless slotless DC motor comprises preparation rotor and stator, it is characterized in that: described rotor adopts the SmCo rare earth material to make; When adopting the SmCo rare earth to be the material preparation rotor, with the first line cutting of described SmCo rare earth, after initial processing becomes tubular body, go up high-precision grinder again, polishing makes magnet ring; The electric machine main shaft that assembles and magnet ring toasted under 260 ± 20 ℃ of high temperature be cured processing.
2. the preparation method of brushless slotless DC motor as claimed in claim 1 is characterized in that: a stainless steel outer sleeve is housed outside described rotor.
3. the preparation method of brushless slotless DC motor as claimed in claim 2, it is characterized in that: the preparation method of described rotor in turn includes the following steps: a, the SmCo rare earth material is carried out line cutting, after initial processing becomes tubular body, go up high-precision grinder again, polishing makes magnet ring, bonding then, magnetize rotor; B, with the rotor electric machine main shaft of packing into, cement with adhesive; C, the electric machine main shaft that assembles and magnet ring toasted under 260 ± 20 ℃ of high temperature be cured processing; After being cooled to normal temperature after d, the baking, smear adhesive at rotor surface, in the stainless steel outer sleeve of more described rotor being packed into; The rotor of e, the stainless steel outer sleeve of will packing into is cooled to normal temperature again after baking-curing under 260 ± 20 ℃ of high temperature is handled; F, rotor is carried out dynamic balancing regulate.
4. the preparation method of brushless slotless DC motor according to claim 3 is characterized in that: high temperature described in step c baking down was meant under 260 ± 20 ℃ of conditions baking 3 hours ± 10 minutes; Baking is meant under 260 ± 20 ℃ condition and toasted 3 hours ± 10 minutes under the high temperature described in the step e; Adhesive described in step b and the steps d is high-temperature adhesives.
5. according to the preparation method of the brushless slotless DC motor described in the claim 1～4, wherein the preparation of stator is included in track ring (1) outside and turns to stator winding (2) with bifilar enamelled wire, and makes each armature coil shape approximation " 8 " font in the described stator winding (2).
6. the preparation method of brushless slotless DC motor according to claim 5, it is characterized in that: the preparation of described stator also comprise with described stator winding through preliminary drying, 80～120 ℃ of high temperature dipping lacquers, 180 ± 20 ℃ of constant temperature keep, be cooled to room temperature, the electric machine casing of packing into encapsulation and heating cure setting, be cooled to room temperature at last again.
7. the preparation method of brushless slotless DC motor according to claim 6 is characterized in that: described high temperature dipping lacquer is meant that stator winding soaked 1～2 hour in temperature is 80～120 ℃ lacquer; Described constant temperature keeps being meant with taking-up drains through the stator winding behind the high temperature dipping lacquer, kept under 180 ± 20 ℃ condition 60 ± 20 minutes; The described electric machine casing encapsulation of packing into is to adopt epoxy encapsulation; Described curing setting is with the electric machine casing after the encapsulation, places under 260～300 ℃ the condition to keep 40～60 minutes.
8. the preparation method of stator of brushless slotless DC motor according to claim 7, it is characterized in that: described high temperature dipping lacquer temperature is 100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910103422 CN101510707B (en) | 2009-03-23 | 2009-03-23 | Preparation method of non-groove brushless DC motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910103422 CN101510707B (en) | 2009-03-23 | 2009-03-23 | Preparation method of non-groove brushless DC motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101510707A CN101510707A (en) | 2009-08-19 |
| CN101510707B true CN101510707B (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910103422 Expired - Fee Related CN101510707B (en) | 2009-03-23 | 2009-03-23 | Preparation method of non-groove brushless DC motor rotor |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545521A (en) * | 2011-12-27 | 2012-07-04 | 西北工业大学 | Permanent magnet brushless direct-current motor |
| CN102624162A (en) * | 2012-04-18 | 2012-08-01 | 上海电气集团上海电机厂有限公司 | Manufacturing method for stator of brushless excitation motor |
| CN112466663B (en) * | 2020-11-09 | 2022-09-06 | 太仓优盛电子有限公司 | High-temperature dipping treatment process of transformer |
| CN114421726B (en) * | 2022-02-09 | 2024-04-09 | 浙江露通机电有限公司 | Brushless motor shell and magnet fixing paint dipping process and processing groove |
| CN115940540B (en) * | 2023-03-09 | 2023-05-02 | 山西特威斯机电设备科技有限公司 | Production device and method for motor stator core |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068450A (en) * | 1991-07-04 | 1993-01-27 | 北京市西城区新开通用试验厂 | Rare-earth synchronous motor with ring rotor |
| CN1075835A (en) * | 1992-02-22 | 1993-09-01 | 北京市西城区新开通用试验厂 | The rare-earth permanent magnet element that is used for rotor |
-
2009
- 2009-03-23 CN CN 200910103422 patent/CN101510707B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068450A (en) * | 1991-07-04 | 1993-01-27 | 北京市西城区新开通用试验厂 | Rare-earth synchronous motor with ring rotor |
| CN1075835A (en) * | 1992-02-22 | 1993-09-01 | 北京市西城区新开通用试验厂 | The rare-earth permanent magnet element that is used for rotor |
Non-Patent Citations (1)
| Title |
|---|
| 季致和.微型交流电机浸漆工艺的研究.《微特电机》.2002,(第4期), * |
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Inventor after: Liao Qiong Inventor after: Zhou Jian Inventor after: Cai Yunhong Inventor after: Jie Yunfeng Inventor after: Hao Lina Inventor before: Liao Qiong Inventor before: Zhou Jian Inventor before: Cai Yunhong |
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Owner name: CHONGQING RUNZE PHARMACEUTICAL CO., LTD. Free format text: FORMER NAME: CHONGQING RUNZE MEDICAL INSTRUMENTS LTD. |
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Address after: 400042 Chongqing city Yubei District Qinye Road No. 9 Patentee after: Chongqing Runze Pharmaceutical Co., Ltd. Address before: 400060 Chongqing city Yubei District Shuangfeng Bridge Street Airport Road No. 296 Building 1 yuan and 7 2- store Patentee before: Chongqing Runze Medical Instruments Ltd. |
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Granted publication date: 20110420 Termination date: 20210323 |
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