CN102510147A - Rotor topological structure for permanent-magnet servomotor - Google Patents
Rotor topological structure for permanent-magnet servomotor Download PDFInfo
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- CN102510147A CN102510147A CN2011103604230A CN201110360423A CN102510147A CN 102510147 A CN102510147 A CN 102510147A CN 2011103604230 A CN2011103604230 A CN 2011103604230A CN 201110360423 A CN201110360423 A CN 201110360423A CN 102510147 A CN102510147 A CN 102510147A
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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 made up of stator module, rotor assembly, support end-cap assembly and encoder four parts.Stator module comprises the stator core that has groove and is placed on the coil windings in the groove; Rotor assembly comprises rotor core, permanent magnet, axle and magnet steel end pressing plate.The rotor assembly of formula salient mounting magnet steel is pasted on the opposite; The magnet steel that in the time of the permanent-magnet servo motor high speed rotating, is in rotor surface receives bigger centrifugal force; When this centrifugal force during greater than the attraction of the 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: first kind is that magnet steel directly is bonded on the rotor core with heatproof cementing agent such as epoxy resin earlier when being assembled on the rotor core, and the colligation of reprocess fibre matter band is got up; Second kind is to use nonmagnetic metal sleeve that permanent magnet is sleeved on the rotor.More than two kinds of methods all take the space of rotor air gap, cause the double increase of electric machine rotor air gap, the effective coverage utilance reduces.
Two kinds of above-mentioned ways all bring the air gap that can cause between stator and the rotor to increase, and have reduced the intensity of armature reaction to a certain extent, have promptly reduced the armature reaction inductance, and the speed adjustable range of motor is limited simultaneously; In addition, can know that magnet steel direction of magnetization thickness and gas length are proportional, need the corresponding magnet steel direction of magnetization that increases after air gap increases, promptly increase the thickness of permanent magnet, cause material cost to increase by the magnetic circuit computing formula.
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; Be used for realizing reducing permanent magnet thickness and increasing the armature reaction inductance motor properties and the speed adjustable range of widening servomotor when having improved low speed.
The present invention realizes through 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 the rotating shaft, outside hub, be with rotor core, on the outer peripheral face of rotor core, be evenly equipped with magnetic links; Be fixed with the aluminum pressing plate that magnetic links and rotor core are grasped respectively in the hub both sides; It is characterized in that described magnetic links is a crescent, and be equipped with between two magnetic links magnetic links is pressed on the fixed structure on the rotor core.
In the rotor topological structure that above-mentioned permanent-magnet servo motor is used, to the both sides attenuation, the radian coefficient of the lateral surface of magnetic links is 0.7～0.9 to described magnetic links thickness by the centre.
Meniscate magnetic links makes not uniform thickness of its direction of magnetization, and from axis by thick to thin, make the air gap between stator and the rotor produce excitation field near Sine distribution.Magnetic links is processed crescent and is distributed on the rotor core excircle, and this structure is effectively cut apart the magnetic circuit zone, is that the topological structure of motor internal magnetic field space is optimized, and promotes power of motor density and electric property.
In the rotor topological structure that above-mentioned permanent-magnet servo motor is used, the radian coefficient of the lateral surface of said magnetic links is 0.8.Selecting for use 0.8 can be near the excitation field of Sine distribution.
In the rotor topological structure that above-mentioned permanent-magnet servo motor is used, described fixed structure comprises the nylon filler rod of vertical bar shape, and described nylon filler rod is fixed on the above-mentioned rotor core and both sides are pressed on the magnetic links respectively.The 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 big pressure again simultaneously, when the motor high speed rotating, can push down magnetic links reliably.
In the rotor topological structure that above-mentioned permanent-magnet servo motor is used, the dual-side of described nylon filler rod bottom surface edge is the inclined-plane, and the subtended angle A that said inclined-plane forms is greater than the adjacent formed subtended angle B in two magnetic links edges.Because the magnetic links surface is hard, and mismachining tolerance is arranged, for the ease of assembling, can make formation line contact when assembling between magnetic links and the nylon filler rod through above-mentioned structure, guaranteed assembly process process.
In the rotor topological structure that above-mentioned permanent-magnet servo motor is used, be provided with recessed arc groove in the heart in the described nylon filler rod end face.This shape has guaranteed the facility of assembling; The motor feels hot when load especially heavy duty simultaneously causes the expansion of nylon nylon to reserve the space; And the nylon filler rod paired be fixed on each magnetic links side; When nylon filler rod expanded by heating, increased magnetic links and pressed to the pressure in axle center, circumferential active force is cancelled out each other, and can not cause the magnetic links displacement.
In the rotor topological structure that above-mentioned permanent-magnet servo motor is used, the edge of said aluminum pressing plate is provided with quantity and above-mentioned nylon filler rod flanging one to one, and said 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 influence of mismachining tolerance.
In the rotor topological structure that above-mentioned permanent-magnet servo motor is used; Described nylon filler rod is bonded on the rotor core; And pass the nylon filler rod through screw and be connected on the 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.The nylon filler rod is fixed on the rotor core this mode fixation, nylon filler rod difficult drop-off through above-mentioned mode.
Prior art is compared, and the present invention has the following advantages:
1, because magnetic links is processed crescent, make the thickness attenuation of magnetic links both sides, saved the more expensive magnetic steel material of price, reduced cost.
2, simultaneously, circumferentially have a zone of vacant about 20% between magnetic links and the magnetic links, the nylon filler rod is set in the space in this section, when motor temperature raise, nylon filler rod expanded by heating extruding magnetic links made magnetic links fixing more firm.
3, the thickness owing to magnetic links reduces; Make the air gap between rotor and the stator to reduce accordingly, strengthened the intensity of armature reaction to a certain extent, promptly increase the inductance of armature reaction; Motor performance when having improved low speed is widened the speed adjustable range of servomotor.
Description of drawings
Fig. 1 is a side-looking structural representation of the present invention.
Fig. 2 is a sectional structure sketch map of the present invention.
Fig. 3 is the structure for amplifying sketch map of A part among Fig. 1.
Fig. 4 is the structure for amplifying sketch map of B part among Fig. 1.
Fig. 5 is the structure for amplifying sketch map of C part among Fig. 2.
Among the 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
Below be specific embodiment of the present invention, and combine accompanying drawing that technical scheme of the present invention is done further to describe, 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 the rotating shaft 1; Outside hub 2, be with rotor core 3, rotor core 3 is to be overrided to form by punching, between rotor core 3 and hub 2, forms interference fit; On the outer peripheral face of rotor core 3, be bonded with magnetic links 4 equably, also can be coated with heatproof glue 8 or be coated with a spot of heatproof glue 8 through heatproof glue 8.Each magnetic links 4 is a crescent, and to the both sides attenuation, meniscate magnetic links 4 makes not uniform thickness of its direction of magnetization to magnetic links 4 thickness by the centre, and from axis by thick to thin, make the air gap between stator and the rotor produce excitation field near Sine distribution.The radian coefficient of the lateral surface of magnetic links 4 is 0.7～0.9, and selecting for use 0.8 can be near the excitation field of Sine distribution.Therefore circumferentially there is a zone of vacant about 20% between magnetic links 4 and the magnetic links 4, in this zone, promptly is equipped with between two magnetic links 4 magnetic links 4 is pressed on the fixed structure on the rotor core 3.Magnetic links 4 is processed crescent and is distributed on rotor core 3 excircles, and this structure is effectively cut apart the magnetic circuit zone, is that the topological structure of motor internal magnetic field space is optimized, and promotes power of motor density and electric property.
As shown in Figure 2, be fixed with the aluminum pressing plate 5 that magnetic links 4 and rotor core 3 are grasped respectively in hub 2 both sides.Each aluminum pressing plate 5 passes through six screw on hub 2.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.Assembling is as shown in Figure 5 for ease, between flanging 51 and magnetic links 4, is provided with the 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 the rotor core 3 and both sides are pressed in respectively on the magnetic links 4.Nylon filler rod 6 is bonded on the rotor core 3 through heatproof glue 8, and passes nylon filler rod 6 through tiny screw 7 and be connected on the rotor core 3, in the angle that nylon filler rod 6 and flanging 7 form, fills the heatproof glue 8 that both are bonded together.As shown in Figure 3, push down magnetic links 4 in order to make nylon filler rod 6, the dual-side edge of nylon filler rod 6 bottom surfaces is inclined-plane 61, and the subtended angle A that inclined-plane 61 forms is greater than the adjacent two magnetic links formed subtended angle B in 4 edges.Therefore be provided with recessed arc groove 62 in the heart in nylon filler rod 6 end faces, when nylon filler rod 6 expanded by heating, can increase the pressure that magnetic links 4 is pressed to the axle center, and circumferential active force cancels out each other, can not cause magnetic links 4 displacements.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes 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 this paper has used terms such as body 1, terminal box 2, through hole 3, binding post 4, lid 5, holddown groove 6 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (8)
1. rotor topological structure that permanent-magnet servo motor is used; Comprise rotating shaft (1) and be arranged on the hub (2) in the rotating shaft (1); Outside hub (2), be with rotor core (3); On the outer peripheral face of rotor core (3), be evenly equipped with magnetic links (4), be fixed with the aluminum pressing plate (5) that magnetic links (4) and rotor core (3) are grasped in hub (2) both sides respectively, it is characterized in that; Described magnetic links (4) is a crescent, and is equipped with between two magnetic links (4) magnetic links (4) is pressed on the fixed structure on the rotor core (3).
2. the rotor topological structure that permanent-magnet servo motor according to claim 2 is used is characterized in that, to the both sides attenuation, the radian coefficient of the lateral surface of magnetic links (4) is 0.7～0.9 to described magnetic links (4) thickness by the centre.
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 said magnetic links (4) is 0.8.
4. the rotor topological structure of using according to claim 1 or 2 or 3 described permanent-magnet servo motors; It is characterized in that; Described fixed structure comprises the nylon filler rod (6) of vertical bar shape, and described nylon filler rod (6) is fixed on the above-mentioned rotor core (3) and both sides are pressed in respectively on the magnetic links (4).
5. the rotor topological structure that permanent-magnet servo motor according to claim 4 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 said inclined-plane (61) form is greater than the formed subtended angle B in adjacent two magnetic links (4) edge.
6. the rotor topological structure that permanent-magnet servo motor according to claim 5 is used is characterized in that, is provided with recessed arc groove (62) in the heart in described nylon filler rod (6) end face.
7. the rotor topological structure that permanent-magnet servo motor according to claim 6 is used; It is characterized in that; The edge of said aluminum pressing plate (5) is provided with quantity and above-mentioned nylon filler rod (6) flanging (51) one to one, and said flanging (51) medial surface tilts and forms angle with above-mentioned nylon filler rod (6).
8. the rotor topological structure that permanent-magnet servo motor according to claim 7 is used; It is characterized in that; Described nylon filler rod (6) is bonded on the rotor core (3); And pass nylon filler rod (6) through screw (7) and be connected on the rotor core (3), in the angle that nylon filler rod (6) and above-mentioned flanging (51) form, fill the heatproof glue (8) that both are bonded together.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN102510147A true CN102510147A (en) | 2012-06-20 |
| CN102510147B 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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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734385A (en) * | 2015-04-23 | 2015-06-24 | 中国船舶重工集团公司第七一二研究所 | Rotor structure of high-speed permanent-magnet 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 |
| CN116667567A (en) * | 2023-07-31 | 2023-08-29 | 江苏嘉轩智能工业科技股份有限公司 | Motor rotor and high-speed motor thereof |
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| US20030025412A1 (en) * | 2001-07-31 | 2003-02-06 | Hayfield John Frederick | Magnetic sleeve assembly |
| JP2008109726A (en) * | 2006-10-23 | 2008-05-08 | Mitsubishi Electric Corp | Rotor for rotary electric machine |
| 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 |
-
2011
- 2011-11-15 CN CN201110360423.0A patent/CN102510147B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030025412A1 (en) * | 2001-07-31 | 2003-02-06 | Hayfield John Frederick | Magnetic sleeve assembly |
| JP2008109726A (en) * | 2006-10-23 | 2008-05-08 | Mitsubishi Electric Corp | Rotor for rotary electric machine |
| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734385A (en) * | 2015-04-23 | 2015-06-24 | 中国船舶重工集团公司第七一二研究所 | Rotor structure of high-speed permanent-magnet synchronous motor |
| 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 |
| CN116667567A (en) * | 2023-07-31 | 2023-08-29 | 江苏嘉轩智能工业科技股份有限公司 | Motor rotor and high-speed motor thereof |
| 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 |
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| CN102510147B (en) | 2014-02-26 |
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