CN102510147B - Rotor topological structure for permanent-magnet servomotor - Google Patents
Rotor topological structure for permanent-magnet servomotor Download PDFInfo
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- CN102510147B CN102510147B CN201110360423.0A CN201110360423A CN102510147B CN 102510147 B CN102510147 B CN 102510147B CN 201110360423 A CN201110360423 A CN 201110360423A CN 102510147 B CN102510147 B CN 102510147B
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- rotor
- magnetic links
- rotor core
- permanent
- filler rod
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- 238000003825 pressing Methods 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004677 Nylon Substances 0.000 claims description 40
- 229920001778 nylon Polymers 0.000 claims description 40
- 239000000945 filler Substances 0.000 claims description 38
- 239000003292 glue Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000004411 aluminium Substances 0.000 abstract 1
- 238000013459 approach Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000005415 magnetization Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a rotor topological structure for a permanent-magnet servomotor, which belongs to the technical field of servomotors, and solves the problems that the permanent magnet of a conventional servomotor rotor is larger in thickness and a mounting structure occupies the space of an air gap between the stator and the rotor. The rotor topological structure for the permanent-magnet servomotor comprises a rotating shaft and a hub plate arranged on the rotating shaft, wherein a rotor core is sleeved outside the hub plate; magnetic steel pieces are uniformly distributed at the periphery of the rotor core; aluminium pressing plates for clamping both the magnetic steel pieces and the rotor core are fixedly connected to two sides of the hub plate respectively; the magnetic steel pieces are crescent; and a fixing structure for compressing the magnetic steel pieces on the rotor core is arranged between every two magnetic steel pieces. The rotor topological structure reduces the thickness of permanent magnets, has small occupied area, increases the armature reaction inductance, improves both the performance of the motor at low velocity and broadens the speed regulation range of the servomotor.
Description
Technical field
The invention belongs to technical field of motors, relate to the rotor topological structure that a kind of permanent-magnet servo motor is used.
Background technology
Permanent-magnet servo motor is comprised of stator module, rotor assembly, support end-cap assembly and encoder four parts.Stator module comprises with the stator core of groove and is placed on the coil windings in groove; Rotor assembly comprises rotor core, permanent magnet, axle and magnet steel end pressing plate.The rotor assembly of the mounted salient mounting magnet steel in opposite, the magnet steel that is in rotor surface in the time of permanent-magnet servo motor High Rotation Speed is subject to larger centrifugal force, when this centrifugal force is greater than the attraction of rotor core of magnet steel, magnet steel will fly away from rotor, cause the badly damaged of servomotor.
Traditional treating method mainly contains two kinds: to be alinco assembled be first directly bonded on rotor core with heatproof cementing agent such as epoxy resin to time on rotor core the first, and the colligation of reprocess fibre matter band is got up; The second is to use nonmagnetic metal sleeve that permanent magnet is sleeved on rotor.Above two kinds of methods all take the space of rotor air gap, cause the double increase of electric machine rotor air gap, and effective coverage utilance reduces.
Two kinds of above-mentioned ways all bring the air gap that can cause between stator and rotor to increase, and have reduced to a certain extent the intensity of armature reaction, have reduced Armature inductance, and the speed adjustable range of motor is limited simultaneously; In addition, from magnetic circuit computing formula, magnet steel direction of magnetization thickness and gas length are proportional, and air gap needs to increase accordingly the magnet steel direction of magnetization after increasing, and has increased the thickness of permanent magnet, has caused material cost to increase.
Summary of the invention
The present invention is directed to existing technology and have the problems referred to above, the rotor topological structure that a kind of permanent-magnet servo motor is used has been proposed, for realizing, reduce permanent magnet thickness and increase Armature inductance, the performance of motor and the speed adjustable range of widening servomotor while having improved low speed.
The present invention realizes by following technical proposal: the rotor topological structure that a kind of permanent-magnet servo motor is used, comprise rotating shaft and be arranged on the hub in rotating shaft, at hub overcoat, there is rotor core, on the outer peripheral face of rotor core, be evenly equipped with magnetic links, in hub both sides, be fixed with respectively the aluminum pressing plate that magnetic links and rotor core are clamped, it is characterized in that, described magnetic links is crescent, and is equipped with magnetic links is pressed on to the fixed structure on rotor core between two magnetic links.
In the rotor topological structure of using at above-mentioned permanent-magnet servo motor, described magnetic links thickness is by centre to both sides attenuation, and the radian coefficient of the lateral surface of magnetic links is 0.7～0.9.
Meniscate magnetic links makes not uniform thickness of its direction of magnetization, and from axis by thick to thin, make air gap between stator and rotor produce the excitation field that approaches Sine distribution.Magnetic links is made to crescent and be distributed on rotor core excircle, this structure is effectively cut apart magnetic circuit region, is that the topological structure of motor internal magnetic field space is optimized, lifting motor power density and electric property.
In the rotor topological structure of using at above-mentioned permanent-magnet servo motor, the radian coefficient of the lateral surface of described magnetic links is 0.8.Select 0.8 excitation field that can approach Sine distribution.
In the rotor topological structure of using at above-mentioned permanent-magnet servo motor, described fixed structure comprises the nylon filler rod of vertical bar shape, and described nylon filler rod is fixed on above-mentioned rotor core and both sides are pressed on magnetic links respectively.Nylon filler rod has certain mechanical strength and its case hardness is soft much to magnetic links, therefore when assembling, does not damage magnet steel, can keep enough large pressure again simultaneously, when motor High Rotation Speed, can push down reliably magnetic links.
In the rotor topological structure of using at above-mentioned permanent-magnet servo motor, the dual-side of described nylon filler rod bottom surface edge is inclined-plane, and the subtended angle A that described inclined-plane forms is greater than the adjacent two formed subtended angle B in magnetic links edge.Because magnetic links surface is hard, there is mismachining tolerance, for the ease of assembling, by above-mentioned structure, can make when assembling, to form line between magnetic links and nylon filler rod and contact, guaranteed assembly process process.
In the rotor topological structure of using at above-mentioned permanent-magnet servo motor, in described nylon filler rod end face, be provided with in the heart recessed arc groove.This shape has guaranteed the facility of assembling, when load especially heavy duty, the motor feels hot simultaneously causes the expansion of nylon nylon to reserve space, and nylon filler rod paired be fixed on each magnetic links side, when nylon filler rod expanded by heating, increased the pressure that magnetic links presses to axle center, circumferential active force is cancelled out each other, and can not cause magnetic links displacement.
In the rotor topological structure of using at above-mentioned permanent-magnet servo motor, the edge of described aluminum pressing plate is provided with quantity and above-mentioned nylon filler rod flanging one to one, and described flanging medial surface tilts and forms angle with above-mentioned nylon filler rod.This structure is convenient to the assembling of aluminum pressing plate, eliminates the impact of mismachining tolerance.
In the rotor topological structure of using at above-mentioned permanent-magnet servo motor, described nylon filler rod is bonded on rotor core, and by screw, pass nylon filler rod and be connected on rotor core, in the angle of nylon filler rod and the formation of above-mentioned flanging, fill the heatproof glue that both are bonded together.By above-mentioned mode, nylon filler rod is fixed on rotor core to this mode fixation, nylon filler rod difficult drop-off.
Prior art is compared, and the present invention has the following advantages:
1, due to magnetic links is made to crescent, make the thickness attenuation of magnetic links both sides, saved the more expensive magnetic steel material of price, reduced cost.
2, simultaneously, the region that circumferentially has 20% vacant left and right between magnetic links and magnetic links, arranges nylon filler rod in this section in space, and when motor temperature raises, nylon filler rod expanded by heating extruding magnetic links, makes magnetic links fixing more firm.
3, the thickness due to magnetic links reduces, air gap between rotor and stator can be reduced accordingly, strengthened to a certain extent the intensity of armature reaction, increase the inductance of armature reaction, motor performance while having improved low speed, widens the speed adjustable range of servomotor.
Accompanying drawing explanation
Fig. 1 is side-looking structural representation of the present invention.
Fig. 2 is sectional structure schematic diagram of the present invention.
Fig. 3 is the structure for amplifying schematic diagram of A part in Fig. 1.
Fig. 4 is the structure for amplifying schematic diagram of B part in Fig. 1.
Fig. 5 is the structure for amplifying schematic diagram of C part in Fig. 2.
In figure, 1, rotating shaft; 2, hub; 3, rotor core; 4, magnetic links; 5, aluminum pressing plate; 51, flanging; 6, nylon filler rod; 61, inclined-plane; 62, arc groove; 7, screw; 8, heatproof glue.
Embodiment
Be below specific embodiments of the invention, and by reference to the accompanying drawings technical scheme of the present invention be further described, but the present invention is not limited to these embodiment.
As depicted in figs. 1 and 2, the present invention includes rotating shaft 1 and be arranged on the hub 2 in rotating shaft 1, at hub 2 overcoats, there is rotor core 3, rotor core 3 is to be overrided to form by punching, between rotor core 3 and hub 2, form interference fit, on the outer peripheral face of rotor core 3, by heatproof glue 8, be bonded with equably magnetic links 4, also can be coated with heatproof glue 8 or be coated with a small amount of heatproof glue 8.Each magnetic links 4 is crescent, and magnetic links 4 thickness are by centre to both sides attenuation, and meniscate magnetic links 4 makes not uniform thickness of its direction of magnetization, and from axis by thick to thin, make air gap between stator and rotor produce the excitation field that approaches Sine distribution.The radian coefficient of the lateral surface of magnetic links 4 is 0.7～0.9, selects 0.8 excitation field that can approach Sine distribution.Therefore in the ，Gai region, region that circumferentially has 20% vacant left and right between magnetic links 4 and magnetic links 4, between two magnetic links 4, be equipped with magnetic links 4 is pressed on to the fixed structure on rotor core 3.Magnetic links 4 is made to crescent and be distributed on rotor core 3 excircles, this structure is effectively cut apart magnetic circuit region, is that the topological structure of motor internal magnetic field space is optimized, lifting motor power density and electric property.
As shown in Figure 2, in hub 2 both sides, be fixed with respectively the aluminum pressing plate 5 that magnetic links 4 and rotor core 3 are clamped.Each aluminum pressing plate 5 is fixed on hub 2 by six screws.In conjunction with Fig. 2, as shown in Figure 4, the edge of aluminum pressing plate 5 is provided with quantity and nylon filler rod 6 flanging 51 one to one, and flanging 51 medial surfaces tilt and form angles with nylon filler rod 6.For convenient for assembly, as shown in Figure 5, between flanging 51 and magnetic links 4, be provided with fit-up gap.
In conjunction with Fig. 1, as shown in Figure 3, fixed structure comprises nylon filler rod 6, and nylon filler rod 6 is fixed on rotor core 3 and both sides are pressed in respectively on magnetic links 4.Nylon filler rod 6 is bonded on rotor core 3 by heatproof glue 8, and is connected on rotor core 3 through nylon filler rod 6 by tiny screw 7, in the angle forming, fills the heatproof glue 8 that both are bonded together at nylon filler rod 6 and flanging 7.As shown in Figure 3, in order to make nylon filler rod 6 push down magnetic links 4, the dual-side of nylon filler rod 6 bottom surfaces is greater than the adjacent two magnetic links 4 formed subtended angle B in edge along the subtended angle A forming for 61，Qie inclined-plane, inclined-plane 61.Therefore in nylon filler rod 6 end faces, be provided with in the heart recessed arc groove 62, when nylon filler rod 6 expanded by heating, can increase the pressure that magnetic links 4 presses to axle center, and circumferential active force cancels out each other, can not cause magnetic links 4 displacements.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used the terms such as body 1, terminal box 2, through hole 3, binding post 4, lid 5, holddown groove 6 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present invention; They are construed to any additional restriction is all contrary with spirit of the present invention.
Claims (6)
1. the rotor topological structure that permanent-magnet servo motor is used, comprise rotating shaft (1) and be arranged on the hub (2) in rotating shaft (1), at hub (2) overcoat, there is rotor core (3), between rotor core (3) and hub (2), form interference fit, on the outer peripheral face of rotor core (3), be evenly equipped with magnetic links (4), in hub (2) both sides, be fixed with respectively the aluminum pressing plate (5) that magnetic links (4) and rotor core (3) are clamped, it is characterized in that, described magnetic links (4) is crescent, and be equipped with magnetic links (4) is pressed on to the fixed structure on rotor core (3) between two magnetic links (4), described fixed structure comprises the nylon filler rod (6) of vertical bar shape, and described nylon filler rod (6) is fixed on above-mentioned rotor core (3) above and both sides are pressed in respectively on magnetic links (4), in described nylon filler rod (6) end face, be provided with in the heart recessed arc groove (62).
2. the rotor topological structure that permanent-magnet servo motor according to claim 1 is used, is characterized in that, described magnetic links (4) thickness is by centre to both sides attenuation, and the radian coefficient of the lateral surface of magnetic links (4) is 0.7～0.9.
3. the rotor topological structure that permanent-magnet servo motor according to claim 2 is used, is characterized in that, the radian coefficient of the lateral surface of described magnetic links (4) is 0.8.
4. the rotor topological structure that permanent-magnet servo motor according to claim 3 is used, it is characterized in that, the dual-side edge of described nylon filler rod (6) bottom surface is inclined-plane (61), and the subtended angle A that described inclined-plane (61) form is greater than the formed subtended angle B in adjacent two magnetic links (4) edge.
5. the rotor topological structure that permanent-magnet servo motor according to claim 4 is used, it is characterized in that, the edge of described aluminum pressing plate (5) is provided with quantity and above-mentioned nylon filler rod (6) flanging (51) one to one, and described flanging (51) medial surface tilts and forms angle with above-mentioned nylon filler rod (6).
6. the rotor topological structure that permanent-magnet servo motor according to claim 5 is used, it is characterized in that, described nylon filler rod (6) is bonded on rotor core (3), and it is upper by screw (7), through nylon filler rod (6), to be connected to rotor core (3), in the angle forming, fills the heatproof glue (8) that both are bonded together at nylon filler rod (6) and above-mentioned flanging (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360423.0A CN102510147B (en) | 2011-11-15 | 2011-11-15 | Rotor topological structure for permanent-magnet servomotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360423.0A CN102510147B (en) | 2011-11-15 | 2011-11-15 | Rotor topological structure for permanent-magnet servomotor |
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| Publication Number | Publication Date |
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| CN102510147A CN102510147A (en) | 2012-06-20 |
| CN102510147B true CN102510147B (en) | 2014-02-26 |
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| CN201110360423.0A Expired - Fee Related CN102510147B (en) | 2011-11-15 | 2011-11-15 | Rotor topological structure for permanent-magnet servomotor |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734385B (en) * | 2015-04-23 | 2017-09-29 | 中国船舶重工集团公司第七一二研究所 | A kind of rotor structure of high-speed permanent magnetic synchronous motor |
| CN106636477A (en) * | 2016-12-29 | 2017-05-10 | 南宁苏格尔科技有限公司 | Sugar refinery evaporation pot with permanent magnet device |
| CN108471211A (en) * | 2018-04-13 | 2018-08-31 | 哈尔滨理工大学 | A kind of rotor structure improving permanent magnet synchronous motor weak magnetism speed expansion performance |
| CN109067102A (en) * | 2018-07-04 | 2018-12-21 | 徐州给力磁业有限公司 | A kind of permanent-magnetic electric machine rotor magnet steel separator and separation method |
| CN109599958A (en) * | 2018-12-20 | 2019-04-09 | 江苏大学 | A kind of high reliability, high power density novel permanent-magnet motor |
| CN116667567B (en) * | 2023-07-31 | 2023-10-27 | 江苏嘉轩智能工业科技股份有限公司 | Motor rotor and high-speed motor thereof |
| CN120582374B (en) * | 2025-07-24 | 2025-11-14 | 山东天瑞重工有限公司 | High-voltage motor rotor structure and motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888124A (en) * | 2009-05-15 | 2010-11-17 | 陈友林 | Permanent-magnetic synchronous motor rotor |
| CN202309285U (en) * | 2011-11-15 | 2012-07-04 | 浙江省三门县飞达电器有限公司 | Rotor topological structure for permanent magnet servo motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030025412A1 (en) * | 2001-07-31 | 2003-02-06 | Hayfield John Frederick | Magnetic sleeve assembly |
| JP5000262B2 (en) * | 2006-10-23 | 2012-08-15 | 三菱電機株式会社 | Rotating machine rotor |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888124A (en) * | 2009-05-15 | 2010-11-17 | 陈友林 | Permanent-magnetic synchronous motor rotor |
| CN202309285U (en) * | 2011-11-15 | 2012-07-04 | 浙江省三门县飞达电器有限公司 | Rotor topological structure for permanent magnet servo motor |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-109726A 2008.05.08 |
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