CN101771326A - Cylindrical linear motor with double-layer air gaps - Google Patents
Cylindrical linear motor with double-layer air gaps Download PDFInfo
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- CN101771326A CN101771326A CN 201010109423 CN201010109423A CN101771326A CN 101771326 A CN101771326 A CN 101771326A CN 201010109423 CN201010109423 CN 201010109423 CN 201010109423 A CN201010109423 A CN 201010109423A CN 101771326 A CN101771326 A CN 101771326A
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Abstract
The invention provides a cylindrical linear motor with double-layer air gaps, which relates to the field of motors and improves the volume space and the winding availability of the existing motor. Outer primary yokes are cylindrical magnetic conduction iron cores, outer primary teeth are annular magnetic conduction iron cores, and the teeth and outer windings are sequentially arranged on the inner walls of the yokes at intervals along the moving direction of a motor rotor; an inner primary non-magnetic conduction shaft is in a cylindrical shape, a plurality of annular grooves are sequentially formed on the outer surface of an inner primary magnetic conduction iron core at intervals along the moving direction of the motor rotor, inner primary windings are wound in the annular grooves, and the inner magnetic conduction iron core is sleeved on the non-magnetic conduction shaft; a middle secondary magnetic conduction iron core is in a cylindrical shape, and middle secondary outer and inner Halbach permanent magnet arrays are respectively pasted on the outer surface and the inner surface of the middle magnetic conduction iron core; and outer air gaps are formed between the outer primary magnetic conduction iron core and the middle secondary magnetic conduction iron core, and inner air gaps are formed between the inner primary magnetic conduction iron core and the middle secondary magnetic conduction iron core. The cylindrical linear motor is provided with the double-layer air gaps.
Description
Technical field
The present invention relates to the linear electric motors field, be specifically related to cylindrical linear motor.
Background technology
Traditional rectilinear motion is converted to rectilinear motion through ball wire bar pair and other intermediate transmission mechanism and realizes often by rotatablely moving that electric rotating machine is exported.The existence of complicated intermediate transmission mechanism causes problems such as the accumulation of error, inertia increase, vibration noise, thereby has limited the precision and the dynamic response performance of system.Now, based on straight-line direct drive technology, saved middle complicated transmission mechanism, in lathe, elevator isoline motion applications, and its application expands each field that produces and live just gradually to.Wherein, cylindrical linear motor has advantages such as winding utilization height, no lateral ends winding, no unilateral magnetic force, in the rectilinear motion occasion very high practical value is arranged.
Summary of the invention
The present invention is for the problem of the winding utilization that improves existing motor volume space and motor, and proposed a kind of cylindrical linear motor with double-layer air gaps.
The present invention is elementary by skin, internal layer is elementary and middle secondary is formed; Skin is elementary to be made up of yoke, tooth and outer winding, and yoke is cylindric magnetic conductive iron, and tooth is the annular magnetic conductive iron, and tooth and outer winding are spaced on the inwall of yoke successively along the electric mover direction of motion; Internal layer is elementary to be made up of internal layer magnetic conductive iron, internal layer winding and non-magnetic conductive axis; Non-magnetic conductive axis is cylindric non-magnetic conductive axis, and to be outer surface have the magnetic conductive iron of several cannelures along the electric mover direction of motion to the internal layer magnetic conductive iron successively at interval, is wound with the internal layer winding in the described cannelure, and the internal layer magnetic conductive iron is sleeved on the non-magnetic conductive axis; Middle secondary is made up of outer Halbach permanent magnet array, middle magnetic conductive iron and internal layer Halbach permanent magnet array; Middle magnetic conductive iron is the cylindrical magnetic iron core, the outer surface and the inner surface of magnetic conductive iron in the middle of outer Halbach permanent magnet array and internal layer Halbach permanent magnet array stick on respectively; Form outer air gap between the outer elementary and middle secondary, form the internal layer air gap between the elementary and middle secondary of internal layer.
Cylindrical linear motor with double-layer air gaps of the present invention, when motor is when moving armature structure, two independently outwards power output and motions of motion armature, also can be by rational curtage control, realize two armatures with identical motion state motion, and thrust output is two thrust sums that the unit cylindrical linear motor produces.When motor during for moving magnet steel structure, middle permanent magnet array is as shared mover, and its thrust output is the thrust sum of two unit cylindrical linear motors.The present invention has improved the winding utilization of space and motor, has increased the thrust volume ratio of cylindrical linear motor.Among the present invention, when the diameter of axle of cylindrical linear motor is smaller, adopt the organization plan of double-layer air gaps, identical and in the volume, the effective air gap area increases, effectively the length of winding increases, the thrust of motor increases, thereby has improved the thrust volume ratio of space availability ratio and motor.
Description of drawings
Fig. 1 has the cylindrical linear motor schematic diagram of double-layer air gaps for moving armature structure; Fig. 2 is middle secondary 11 single magnetizing direction schematic diagrames to the utmost point; Fig. 3 is the magnetic field schematic diagram that middle secondary 11 forms; Fig. 4 is the operation principle schematic diagram of motor of the present invention.
Embodiment
Embodiment one: in conjunction with Fig. 1, Fig. 2 and Fig. 3 present embodiment is described, the cylindrical linear motor of present embodiment is elementary 9 by skin, internal layer elementary 10 and middle secondary 11 are formed; Outer elementary 9 are made up of yoke 1, tooth 16 and outer winding 2, and yoke 1 is cylindric magnetic conductive iron, and tooth 16 is the annular magnetic conductive iron, and tooth 16 and outer winding 2 are spaced on the inwall of yoke 1 successively along the electric mover direction of motion; Internal layer elementary 10 is made up of internal layer magnetic conductive iron 4, internal layer winding 5 and non-magnetic conductive axis 6; Non-magnetic conductive axis 6 is cylindric non-magnetic conductive axis, internal layer magnetic conductive iron 4 has the magnetic conductive iron of several cannelures successively at interval along the electric mover direction of motion for outer surface, be wound with internal layer winding 5 in the described cannelure, internal layer magnetic conductive iron 4 is sleeved on the non-magnetic conductive axis 6; Middle secondary 11 is made up of outer Halbach permanent magnet array 3, middle magnetic conductive iron 7 and internal layer Halbach permanent magnet array 8; Middle magnetic conductive iron 7 is the cylindrical magnetic iron core, the outer surface and the inner surface of magnetic conductive iron 7 in the middle of outer Halbach permanent magnet array 3 and internal layer Halbach permanent magnet array 8 stick on respectively, it is opposite to a pair of utmost point magnetizing direction of position to be positioned at the same diameter of axle in outer Halbach permanent magnet array 3 and the internal layer Halbach permanent magnet array 8; Form outer air gap 12 between skin elementary 9 and the middle secondary 11, form internal layer air gap 13 between internal layer elementary 10 and the middle secondary 11.
Middle magnetic conductive iron 7 between outer Halbach permanent magnet array 3 and the internal layer Halbach permanent magnet array 8 is both as the skeleton of pasting outer Halbach permanent magnet array 3 and internal layer Halbach permanent magnet array 8.
Simultaneously, first outer main flux 17, second outer main flux 19 and the outer leakage flux 18 that outer Halbach permanent magnet array 3 produces, the first outer main flux 17 that outer Halbach permanent magnet array 3 produces forms closed main magnetic circuit through outer air gap 12, outer elementary 9, the second outer main flux 19 that outer Halbach permanent magnet array 3 produces forms closed main magnetic circuit through middle magnetic conductive iron 7, outer air gap 12, outer elementary 9, and the outer leakage flux 18 that outer Halbach permanent magnet array 3 produces forms the closed-loop path through middle magnetic conductive iron 7.In like manner, the first internal layer main flux 22, the second internal layer main flux 21 and internal layer leakage flux 20 that internal layer Halbach permanent magnet array 8 produces, the first internal layer main flux 22 that internal layer Halbach permanent magnet array 8 produces forms closed main magnetic circuit through internal layer air gap 13, internal layer elementary 10, the internal layer magnetic conductive iron 4 of the second internal layer main flux 21 that internal layer Halbach permanent magnet array 8 produces on middle magnetic conductive iron 7, internal layer air gap 13, internal layer elementary 10 forms closed main magnetic circuit, and the internal layer leakage flux 20 that internal layer Halbach permanent magnet array 8 produces forms the closed-loop path through middle magnetic conductive iron 7.Middle magnetic conductive iron 7 plays shielding action between the magnetic field as outer Halbach permanent magnet array 3 and 8 generations of internal layer Halbach permanent magnet array, thereby reduces the magnetic field coupling.
Embodiment two: present embodiment is described in conjunction with Fig. 2, present embodiment and embodiment one difference are that the permanent magnet in the outer Halbach permanent magnet array 3 evenly sticks on the outer surface of middle magnetic conductive iron 7, in axial direction the axial axis of two whenever adjacent permanent magnets overlaps, along the circumferential direction the circumferencial direction axis of two whenever adjacent permanent magnets is positioned on the same circumference, every utmost point of outer Halbach permanent magnet array 3 has n permanent magnet, and the permanent magnet that in axial direction is arranged in same axial axis increases progressively α=180 °/n angle successively counterclockwise by the magnetizing direction of every extremely n permanent magnet from left to right.Other composition is identical with embodiment one with connected mode.To be rotated counterclockwise direction is positive direction, on the outer Halbach permanent magnet array 3, every have three permanent magnets extremely down, the magnetizing direction of every pair of extremely following each permanent magnet is arranged as: vertically by increasing progressively with 180 °/3 respectively from left to right, set permanent magnet 3-1 and radially magnetize 30 °, permanent magnet 3-2 radially magnetizes 90 °, permanent magnet 3-3 radially magnetizes 150 °, permanent magnet 3-4 radially magnetizes 210 °, permanent magnet 3-5 radially magnetizes 270 °, and permanent magnet 3-6 radially magnetizes 330 °.
Embodiment three: present embodiment is described in conjunction with Fig. 3, present embodiment and embodiment one difference are that the permanent magnet in the internal layer Halbach permanent magnet array 8 evenly sticks on the inner surface of middle magnetic conductive iron 7, in axial direction the axial axis of two whenever adjacent permanent magnets overlaps, along the circumferential direction the circumferencial direction axis of two whenever adjacent permanent magnets is positioned on the same circumference, every utmost point of internal layer Halbach permanent magnet array 8 has m permanent magnet, and the permanent magnet that in axial direction is arranged in same axial axis is by the β=180 °/m angle of successively decreasing counterclockwise successively of the magnetizing direction of every extremely m permanent magnet from left to right.Other composition is identical with embodiment one with connected mode.To be rotated counterclockwise direction is positive direction, on the internal layer Halbach permanent magnet array 8, every have three permanent magnets extremely down, the magnetizing direction of every pair of extremely following each permanent magnet is arranged as: vertically by successively decreasing with 180 °/3 respectively from left to right, set permanent magnet 8-1 and radially magnetize 330 °, permanent magnet 8-2 radially magnetizes 270 °, permanent magnet 8-3 radially magnetizes 210 °, permanent magnet 8-4 radially magnetizes 150 °, permanent magnet 8-5 radially magnetizes 90 °, and permanent magnet 8-6 radially magnetizes 30 °.
Embodiment four: present embodiment and embodiment two or three differences are that described n, m are integer, when n 〉=and m 〉=5, outer Halbach permanent magnet array 3 produces the sinusoid air-gap field at outer air gap 12, internal layer Halbach permanent magnet array 8 produces the sinusoid air-gap field at internal layer air gap 13, it is very little that two sinusoidal magnetic fields disturb each other, is mutually independent.Other composition is identical with embodiment two or three with connected mode.
Embodiment five: in conjunction with Fig. 1 present embodiment is described, present embodiment and embodiment four differences are all to include a pair of utmost point at least in outer Halbach permanent magnet array 3 and the internal layer Halbach permanent magnet array 8.Other composition is identical with embodiment four with connected mode.
Embodiment six: present embodiment and embodiment five differences are that the permanent magnet in outer Halbach permanent magnet array 3 and the internal layer Halbach permanent magnet array 8 is a magnetic steel ingot.Other composition is identical with embodiment five with connected mode.
Embodiment seven: present embodiment and embodiment five differences are that the permanent magnet in outer Halbach permanent magnet array 3 and the internal layer Halbach permanent magnet array 8 is the tile shape permanent magnet, and the tile shape permanent magnet along the circumferential direction forms the annular permanent magnet array.Other composition is identical with embodiment five with connected mode.
Embodiment eight: present embodiment and embodiment six or seven differences are that the winding in outer winding 2 and the internal layer winding 5 is a pie winding.Other composition is identical with embodiment six or seven with connected mode.
In conjunction with Fig. 4 principle be:
Outer Halbach permanent magnet array 3 and the sinusoidal magnetic field that produces in outer air gap 12 thereof and outer elementary 9 can form a unit cylindrical linear motor 14.Internal layer Halbach permanent magnet array 8 and the sinusoidal magnetic field and the internal layer elementary 10 that form in internal layer air gap 13 can form another unit cylindrical linear motor 15.On the middle permanent magnet array 11, part main flux and leakage flux path that middle magnetic conductive iron 7 had both produced as outer Halbach permanent magnet array 3 and internal layer Halbach permanent magnet array 8, can between the magnetic field of a unit cylindrical linear motor 14 and another unit cylindrical linear motor 15, play shielding action again, thereby reduce two magnetic field couplings between the unit cylindrical linear motor.
When centre secondary 11 stators as cylindrical linear motor, promptly as the shared stator of two unit cylindrical linear motors 14,15, this moment, two unit cylindrical linear motors were moving armature structure, independent mutually each other, can be by the curtage in outer winding 2 and the internal layer winding 5 be controlled separately, thus realize self-movement control to motor ectomesoderm elementary 9 and internal layer elementary 10.Also can control, thereby make the routing motion output of skin elementary 9 and internal layer elementary 10 by cooperation to the curtage in outer winding 2 and the internal layer winding 5.
When centre secondary 11 movers as cylindrical linear motor, promptly as the shared mover of two unit cylindrical linear motors 14,15, this moment, two unit cylindrical linear motors were moving magnet steel structure of the linear motion actuator form.Supply current has identical frequency in outer winding 2 and the internal layer winding 5, shared mover, and the power output that also is middle secondary 11 is the thrust sum of two unit cylindrical linear motors.
Content of the present invention is not limited only to the content of the respective embodiments described above, and the combination of one of them or several embodiments equally also can realize the purpose of inventing.
Claims (7)
1. cylindrical linear motor with double-layer air gaps is characterized in that it is made up of skin elementary (9), internal layer elementary (10) and middle secondary (11); Outer elementary (9) are made up of yoke (1), tooth (16) and outer winding (2), yoke (1) is cylindric magnetic conductive iron, tooth (16) is the annular magnetic conductive iron, and tooth (16) and outer winding (2) are spaced on the inwall of yoke (1) successively along the electric mover direction of motion; Internal layer elementary (10) is made up of internal layer magnetic conductive iron (4), internal layer winding (5) and non-magnetic conductive axis (6); Non-magnetic conductive axis (6) is cylindric non-magnetic conductive axis, internal layer magnetic conductive iron (4) has the magnetic conductive iron of several cannelures successively at interval along the electric mover direction of motion for outer surface, be wound with internal layer winding (5) in the described cannelure, internal layer magnetic conductive iron (4) is sleeved on the non-magnetic conductive axis (6); Middle secondary (11) is made up of outer Halbach permanent magnet array (3), middle magnetic conductive iron (7) and internal layer Halbach permanent magnet array (8); Middle magnetic conductive iron (7) is the cylindrical magnetic iron core, the outer surface and the inner surface of magnetic conductive iron (7) in the middle of outer Halbach permanent magnet array (3) and internal layer Halbach permanent magnet array (8) stick on respectively; It is opposite to a pair of utmost point magnetizing direction of position to be positioned at the same diameter of axle in outer Halbach permanent magnet array (3) and the internal layer Halbach permanent magnet array (8); Form outer air gap (12) between outer elementary (9) and the middle secondary (11), form internal layer air gap (13) between internal layer elementary (10) and the middle secondary (11).
2. a kind of cylindrical linear motor according to claim 1 with double-layer air gaps, the every utmost point that it is characterized in that outer Halbach permanent magnet array (3) has n permanent magnet, the permanent magnet that in axial direction is arranged in same axial axis increases progressively the α angle successively counterclockwise by the magnetizing direction of every extremely n permanent magnet from left to right, wherein α=180 °/n.
3. a kind of cylindrical linear motor according to claim 1 with double-layer air gaps, the every utmost point that it is characterized in that internal layer Halbach permanent magnet array (8) has m permanent magnet, the permanent magnet that in axial direction is arranged in same axial axis is by the β angle of successively decreasing counterclockwise successively of the magnetizing direction of every extremely m permanent magnet from left to right, wherein β=180 °/m.
4. according to claim 2 or 3 described a kind of cylindrical linear motors, it is characterized in that all including a pair of utmost point at least in outer Halbach permanent magnet array (3) and the internal layer Halbach permanent magnet array (8) with double-layer air gaps.
5. a kind of cylindrical linear motor with double-layer air gaps according to claim 4 is characterized in that the permanent magnet in outer Halbach permanent magnet array (3) and the internal layer Halbach permanent magnet array (8) is a magnetic steel ingot.
6. a kind of cylindrical linear motor with double-layer air gaps according to claim 4 is characterized in that the permanent magnet in outer Halbach permanent magnet array (3) and the internal layer Halbach permanent magnet array (8) is the tile shape permanent magnet.
7. according to claim 5 or 6 described a kind of cylindrical linear motors, it is characterized in that the winding in outer winding (2) and the internal layer winding (5) is a pie winding with double-layer air gaps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010109423 CN101771326A (en) | 2010-02-11 | 2010-02-11 | Cylindrical linear motor with double-layer air gaps |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010109423 CN101771326A (en) | 2010-02-11 | 2010-02-11 | Cylindrical linear motor with double-layer air gaps |
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| CN101771326A true CN101771326A (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010109423 Pending CN101771326A (en) | 2010-02-11 | 2010-02-11 | Cylindrical linear motor with double-layer air gaps |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023268A (en) * | 2013-01-16 | 2013-04-03 | 哈尔滨泰富电气有限公司 | Forced-air-cooling trilaterally-working tri-phase linear asynchronous motor |
| CN103997186A (en) * | 2014-06-06 | 2014-08-20 | 肖俊东 | Linear motor, disk type rotating motor and motor platform |
| CN107134908A (en) * | 2017-02-20 | 2017-09-05 | 北方工业大学 | Magnetic driving device |
| JP2020019007A (en) * | 2018-08-03 | 2020-02-06 | エーエーシーアコースティックテクノロジーズ（シンセン）カンパニーリミテッドＡＡＣ Ａｃｏｕｓｔｉｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ（Ｓｈｅｎｚｈｅｎ）Ｃｏ．，Ｌｔｄ | Linear vibration motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02246765A (en) * | 1989-03-20 | 1990-10-02 | Fujitsu Ltd | Rotary movable section linear motor |
| JPH11187639A (en) * | 1997-12-19 | 1999-07-09 | Matsushita Electric Ind Co Ltd | Magnet moving type linear actuator |
| EP1263122A1 (en) * | 2001-05-30 | 2002-12-04 | Bayerische Motoren Werke Aktiengesellschaft | Linear drive having a rotational symmetry and a double-sided actuator arrangement |
| CN1885692A (en) * | 2006-06-16 | 2006-12-27 | 东南大学 | Built-in type permanent-magnet linear motor |
-
2010
- 2010-02-11 CN CN 201010109423 patent/CN101771326A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02246765A (en) * | 1989-03-20 | 1990-10-02 | Fujitsu Ltd | Rotary movable section linear motor |
| JPH11187639A (en) * | 1997-12-19 | 1999-07-09 | Matsushita Electric Ind Co Ltd | Magnet moving type linear actuator |
| EP1263122A1 (en) * | 2001-05-30 | 2002-12-04 | Bayerische Motoren Werke Aktiengesellschaft | Linear drive having a rotational symmetry and a double-sided actuator arrangement |
| CN1885692A (en) * | 2006-06-16 | 2006-12-27 | 东南大学 | Built-in type permanent-magnet linear motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023268A (en) * | 2013-01-16 | 2013-04-03 | 哈尔滨泰富电气有限公司 | Forced-air-cooling trilaterally-working tri-phase linear asynchronous motor |
| CN103023268B (en) * | 2013-01-16 | 2015-07-01 | 西安泰富西玛电机有限公司 | Forced-air-cooling trilaterally-working tri-phase linear asynchronous motor |
| CN103997186A (en) * | 2014-06-06 | 2014-08-20 | 肖俊东 | Linear motor, disk type rotating motor and motor platform |
| CN107134908A (en) * | 2017-02-20 | 2017-09-05 | 北方工业大学 | Magnetic driving device |
| CN107134908B (en) * | 2017-02-20 | 2019-02-26 | 北方工业大学 | Magnetic driving device |
| JP2020019007A (en) * | 2018-08-03 | 2020-02-06 | エーエーシーアコースティックテクノロジーズ（シンセン）カンパニーリミテッドＡＡＣ Ａｃｏｕｓｔｉｃ Ｔｅｃｈｎｏｌｏｇｉｅｓ（Ｓｈｅｎｚｈｅｎ）Ｃｏ．，Ｌｔｄ | Linear vibration motor |
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Open date: 20100707 |