CN103909427B - A kind of composite excitation magnetic suspension feeding platform - Google Patents
A kind of composite excitation magnetic suspension feeding platform Download PDFInfo
- Publication number
- CN103909427B CN103909427B CN201410153734.3A CN201410153734A CN103909427B CN 103909427 B CN103909427 B CN 103909427B CN 201410153734 A CN201410153734 A CN 201410153734A CN 103909427 B CN103909427 B CN 103909427B
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- Prior art keywords
- suspension
- type rail
- workbench
- feeding platform
- composite excitation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Linear Motors (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a kind of composite excitation magnetic suspension feeding platform, it comprises suspension workbench, V-type rail, two linear motors. Wherein, suspension workbench is the frame structure matching with V-type rail structure, and suspension workbench and V-type rail are about a central axis symmetry; Two linear motors are arranged on suspension workbench and V-type rail, and about described central axis symmetry. Each linear motor comprises mover core and stator core, and described mover core is connected with suspension workbench; Described stator core is arranged on V-type rail. The present invention, by having realized the simple structure of magnetic suspension platform without additional any electromagnet, has reduced and has realized the power consumption suspending, and has saved cost, has reduced the complexity of device simultaneously, and can improve suspension stability and positioning precision.
Description
Technical field
The present invention relates to a kind of Digit Control Machine Tool feeding platform technology, relate in particular to a kind of composite excitation magnetcisuspensionFloating feeding platform.
Background technology
In Digit Control Machine Tool feeding process, between moving component and guide rail, exist friction, and this rubbingThe existence of wiping has much more harms than benefits for feed motion. First, it has increased drive systemPower attenuation, has reduced efficiency, kinematic accuracy and service life, and has improved maintenance cost. Secondly,It can produce motion artifacts and system heating, even can make precise part distortion. Due to friction and movement velocityBetween exist non-linear relation, especially in small quantity, low speed feeding situation, this non-linear relationBe be difficult to hold, even may produce creeping phenomenon, heavy damage drive system to high accuracy, heightThe performance requirement of responding ability.
Industry research staff is devoted to magnetic levitation technology to be applied to NC machine tool feed system, wishes to makeAll the problems referred to above can be readily solved. It is fixed that Rong-JongWai etc. have developed a kind of long stroke magnetic suspension linearPosition motion platform, can realize the straight-line feed motion of large stroke, but this platform can not be realized ultraprecise motion.Chia-HsiangMenq etc. have developed the floating platform of a kind of high accuracy magnetic, have attempted various advanced persons' control methodAnd the suspension precision of platform has been brought up to tens nanometer left and right the most at last, but this platform can only be realized little strokeMicromotion can not provide the straight-line feed motion of large stroke.
" commercial Application type active magnetic suspension machine tool guide linear motor enters the patent of people's applications such as Zhang GangGive platform ", it includes the guide rail that is fixed on support, is sleeved on mobile platform and straight line electric on guide railMachine, linear motor is positioned on the center line of guide rail, and the guide rail top and bottom of its both sides arrange levitating electromagnet,The two sides of guide rail arrange guiding electromagnet, and levitating electromagnet is fixedly connected with mobile platform with guiding electromagnet,Their middle parts are provided with displacement transducer and are connected to mobile platform position control system. The people Shens such as Ge YanjunPatent " a kind of Novel numerical control machine magnetic suspension linear feed of numerical-control machine tool magnetic suspension linear feeding system system " pleaseMainly comprise support, two guide rails, the linear motor rotor parts that are fixed thereon, be arranged on workbenchBottom four angles the differential levitating electromagnet of four couples, be arranged on levitating electromagnet side two pairs of guiding electromagnets,Be arranged on linear motor mover component below workbench, be arranged on optical grating measuring system on guide rail andBracing or strutting arrangement.
Above-mentioned magnetic suspension feeding platform mainly adopts high-speed double electromagnet magnetic suspension, deposits defect both ways.One, vertical suspension power, level guidance force and the horizontal actuator force of suspension system is only by different systemsVertical generation, structure relative complex, and need suspension controller, guide controller, driving governor etc. extremelyFew three controllers, required controlling unit is various, cost costliness. Its two, linear motor is except providingWith electromagnetic actuation force outside, also there is intrinsic normal direction magnetic attraction, normal direction magnetic attraction is often than electromagnetic actuation forceMuch bigger, and can change along with the variation of armature supply, thus affect floating platform suspension stability andPositioning precision.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of composite excitation magnetic suspension feeding platform, itsFeed mechanism using a kind of novel composite excitation magnetic suspension mechanism as high speed and super precision Digit Control Machine Tool, structure andControl relatively simply, can improve positioning precision and the suspension stability of feeding platform.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of and mixExcitation magnetic suspension feeding platform, it comprises suspension workbench, V-type rail, two linear motors. Wherein,Suspension workbench is the frame structure matching with V-type rail structure, suspension workbench and V-type railAll about a central axis symmetrical structure; Two linear motors are arranged on suspension workbench and V-type is ledOn rail, and about described central axis symmetry. Each linear motor comprises mover core and stator core,Described mover core is connected with suspension workbench; Described stator core is arranged on V-type rail.
In a preferred embodiment of the present invention, described composite excitation magnetic suspension feeding platform also comprisesOne direction current vortex sensor, grating sensor, second direction current vortex sensor, first direction current vortexSensor and second direction current vortex sensor are arranged on suspension workbench, and grating sensor is arranged on V-typeOn track.
In a preferred embodiment of the present invention, described V-type rail comprises a body, and it comprises topFace, side and bottom surface, its bottom surface is formed by complete centrosymmetric two inclined-planes.
In a preferred embodiment of the present invention, described stator core is arranged on the body of V-type railOn bottom surface, its inside is provided with Exciting Windings for Transverse Differential Protection, and surface is provided with permanent magnet.
In a preferred embodiment of the present invention, described suspension workbench is by upper beam, curb girder and cantileverThe non-closed frame forming; Wherein, the upper beam of suspension workbench, curb girder and cantilever and V-type rail bodyEnd face, side and the bottom surface respectively suitable distance of corresponding and maintenance be arranged in parallel.
In a preferred embodiment of the present invention, the cantilever of described mover core and suspension workbench connectsConnect, its inside is provided with armature winding.
In a preferred embodiment of the present invention, the curb girder inner surface of described suspension workbench is symmetrical arrangedThere is described first direction current vortex sensor.
In a preferred embodiment of the present invention, the upper beam inner surface of described suspension workbench arranges symmetryThere is described second direction current vortex sensor.
In a preferred embodiment of the present invention, on the body end face of described V-type rail, be symmetrical arrangedThere is described grating sensor.
In a preferred embodiment of the present invention, described composite excitation magnetic suspension feeding platform also comprises controlSystem processed, described Exciting Windings for Transverse Differential Protection, armature winding, first direction current vortex sensor, second direction current vortexSensor and grating sensor are connected to described control system.
The invention has the beneficial effects as follows: the present invention proposes a kind of V-structure guide rail, symmetric configurationTwo linear motors; Be inverted by linear motor, adopt the feeding of magnetic suspension mode, by linear motorSuspending power and guiding force are provided simultaneously; Control for simplifying, adopt composite excitation synchronous linear electric motor; Pass throughFeeding platform special construction is combined with the composite excitation linear motor being arranged symmetrically with, and has realized magnetic suspension platformWithout the simple structure of additional any electromagnet. Thereby, reduce and realized the power consumption suspending, save cost,Reduced the complexity of device simultaneously; Utilize the linear motor that affects suspension system stability and positioning precisionNormal direction magnetic attraction, as suspending power and guiding force, can improve suspension stability and positioning precision. Due to suspensionDriving force, suspending power and the guiding force of system are all produced by linear motor, drive system, suspension system andIt is one that guidance system closes three, simplifies the structure, and has reduced controlling unit.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, will describe embodiment belowIn the accompanying drawing of required use be briefly described, apparently, the accompanying drawing in the following describes is only thisInvention some embodiment, for those of ordinary skill in the art, do not pay creative work beforePut, can also obtain according to these accompanying drawings other accompanying drawing, wherein:
Fig. 1 is the structural representation of composite excitation magnetic suspension feeding platform of the present invention.
Fig. 2 is the cutaway view of Fig. 1 along dotted line A-A.
In accompanying drawing, the mark of each parts is as follows: 1, mover core; 2, stator core; 3, suspension workMake platform; 31, upper beam; 32, curb girder; 33, cantilever; 4, V-type rail; 41, end face; 42, side;43, bottom surface; 5, armature winding; 6, permanent magnet; 7, Exciting Windings for Transverse Differential Protection; 8, first direction current vortex sensingDevice; 9, grating sensor; 10, second direction current vortex sensor.
Detailed description of the invention
To the technical scheme in the embodiment of the present invention be clearly and completely described below, obviously,Described embodiment is only a part of embodiment of the present invention, instead of whole embodiment. Based on thisEmbodiment in bright, those of ordinary skill in the art are not making the institute obtaining under creative work prerequisiteThere is other embodiment, all belong to the scope of protection of the invention.
The object of the invention is the defect existing for prior art, a kind of composite excitation magnetic suspension is providedFeeding platform structure, it is using a kind of novel composite excitation magnetic suspension mechanism as high speed and super precision Digit Control Machine ToolFeed mechanism, structure is relative simple with control, has well avoided again linear motor normal direction magnetic attraction simultaneouslyThe problem of bringing, can improve positioning precision and the suspension stability of feeding platform.
As shown in Figure 1, 2, composite excitation magnetic suspension feeding platform of the present invention comprise V-type rail 4,Suspension workbench 3, linear motor (figure is mark not), first direction current vortex sensor 8, grating sensor9, second direction current vortex sensor 10. The body of V-type rail 4 comprises end face 41, side 42 and bottom surface43, its bottom surface is formed by complete centrosymmetric two inclined-planes.
Suspension workbench 3 is the frame structure matching with V-type rail 4 structures, suspension workbenchWith V-type rail both about a central axis B-B symmetrical structure. As illustrated in fig. 1 and 2, suspendThe non-closed frame of workbench 3 for being formed by upper beam 31, curb girder 32 and cantilever 33. Wherein, suspension workUpper beam 31, curb girder 32 and the cantilever 33 of platform 3 and end face 41, side 42 and the end of V-type rail 4 bodiesFace 43 is corresponding and be arranged in parallel. In Fig. 1 and Fig. 2, under suspension workbench 3 duties in suspended state,After energising, can be just namely the state shown in Fig. 1,2, the workbench 3 that suspends while work be to be placed in VOn the end face 41 of type guide rail 4 bodies.
Two linear motors are symmetrical along central axis B-B. Two linear motor structure phasesWith, this linear motor of sentencing a side is that example describes. Stator core 2 is arranged on V-type rail 4On body bottom surface 43, its inside is provided with Exciting Windings for Transverse Differential Protection 7, and surface is provided with permanent magnet 6. Mover core 1Be connected with the cantilever 33 of suspension workbench 3, its inside is provided with armature winding 5.
Curb girder 32 inner surfaces of suspension workbench 3 are symmetrically arranged with first direction current vortex sensor 8,Upper beam 31 inner surfaces arrange symmetry second direction current vortex sensor 10, the body end face of V-type rail 4On 41, be symmetrically arranged with grating sensor 9. Second direction current vortex sensor 10 is for measuring suspension workbenchThe vertically suspension displacement of z direction, first direction current vortex sensor 8 is for measuring the horizontal y of suspension workbenchThe guiding displacement of direction, grating sensor 9 is for measuring the feeding displacement of the horizontal x direction of suspension workbench.
The present embodiment provides by the vertical component Fz of the normal direction magnetic attraction Fn of two linear motorsSuspending power, horizontal component Fy provides level guidance force, and the electromagnetic push Fx of linear motor provides level to drivePower. Characteristic by composite excitation linear motor: normal direction magnetic attraction is mainly determined by exciting current, electromagnetismThrust is mainly determined by armature supply. Therefore regulate exciting current can control normal direction magnetic attraction, and then realizeStable suspersion; Regulate the armature supply can level of control driving force, realize feed motion.
Described Exciting Windings for Transverse Differential Protection 7, armature winding 5, first direction current vortex sensor 8, second directionCurrent vortex sensor 10 and grating sensor 9 are connected to control system, by Uncoupling Control Based, and this feedingThe motion of three directions of platform x, y, z can realize full decoupled control, i.e. this magnetic suspension feeding platformSuspension, guiding, feeding be separate, be independent of each other, and three reverse motions can be controlled respectively and be dryDisturb the motion of other directions, can improve suspension stability and positioning precision.
It should be noted that: composite excitation magnetic suspension feeding platform structure of the present invention is symmetrical,Here only the structure of half is wherein had been described in detail, second half structure is identical.
The present invention directly drives the structure of feeding platform and control as basic goal to simplify Digit Control Machine Tool, proposesA kind of V-structure guide rail, two linear motors of symmetric configuration; And adopt the feeding of magnetic suspension mode, byLinear motor provides suspending power and guiding force simultaneously; Control for simplifying, adopt composite excitation synchronous linear electricityMotivation. Be inverted by linear motor, suspending power and guiding force are provided simultaneously; By the special knot of feeding platformStructure is combined with the composite excitation linear motor being arranged symmetrically with, and has realized magnetic suspension platform without additional any electricityThe simple structure of magnet.
The novel composite excitation magnetic suspension feeding platform that the present invention proposes in sum has following excellentPoint:
(1) do not need electromagnet suspension system, reduced and realized the power consumption suspending, thereby saved cost,Reduced the complexity of device simultaneously.
(2) utilize the linear motor normal direction magnetic attraction that affects suspension system stability and positioning precisionAs suspending power and guiding force, can improve suspension stability and positioning precision.
(3) driving force of suspension system, suspending power and guiding force are all produced by linear motor, driveIt is one that moving system, suspension system and guidance system close three, simplifies the structure, and has reduced controlling unit.
The foregoing is only embodiments of the invention, not thereby limit the scope of the claims of the present invention, allBe equivalent structure or the conversion of equivalent flow process that utilizes description of the present invention to do, or directly or indirectly useIn other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a composite excitation magnetic suspension feeding platform, is characterized in that, it comprises suspension workMake platform (3), V-type rail (4), two linear motors, wherein, described suspension workbenchFor the frame structure matching with described V-type rail structure, described suspension workbench and described VType guide rail is both about a central axis symmetrical structure; Two linear motors are arranged onOn described suspension workbench and described V-type rail, and about described central axis symmetry; EachLinear motor includes mover core (1) and stator core (2); Described V-type rail bagDraw together by the bottom surface (43) that centrosymmetric two inclined-planes form completely, described suspension workbench bagDraw together the cantilever (33) that bottom surface is relative and the suitable distance of maintenance be arranged in parallel with described V-type rail;Described mover core (1) is arranged on the cantilever (33) of described suspension workbench (3), itsInside is provided with armature winding (5); Described stator core (2) is arranged on described V-type railBottom surface on, its inside is provided with Exciting Windings for Transverse Differential Protection (7); Described surface of stator core is provided with foreverMagnet (6);
Described composite excitation magnetic suspension feeding platform also comprises first direction current vortex sensor(8), grating sensor (9), second direction current vortex sensor (10), first direction electricityEddy current sensor and second direction current vortex sensor are arranged on described suspension workbench, gratingSensor setting is on described V-type rail;
Described composite excitation magnetic suspension feeding platform also comprises control system, described Exciting Windings for Transverse Differential Protection,Armature winding, first direction current vortex sensor, second direction current vortex sensor and grating passSensor is connected to described control system, and by Uncoupling Control Based, to realize x, y, z sideTo the full decoupled control of motion.
2. composite excitation magnetic suspension feeding platform according to claim 1, its feature existsIn, described V-type rail further comprises a body, it comprises end face (41), side (42)And bottom surface (43).
3. composite excitation magnetic suspension feeding platform according to claim 2, its feature existsIn, described suspension workbench is to be formed by upper beam (31), curb girder (32) and cantilever (33)Non-closed frame; Wherein, the upper beam of suspension workbench, curb girder and cantilever and V-type rail are originallyEnd face, side and the bottom surface of the body respectively suitable distance of corresponding and maintenance be arranged in parallel.
4. composite excitation magnetic suspension feeding platform according to claim 3, its feature existsIn, the curb girder inner surface of described suspension workbench is symmetrically arranged with described first direction current vortex and passesSensor.
5. composite excitation magnetic suspension feeding platform according to claim 3, its feature existsIn, the upper beam inner surface of described suspension workbench is symmetrically arranged with described second direction current vortex and passesSensor.
6. composite excitation magnetic suspension feeding platform according to claim 3, its feature existsIn, on the body end face of described V-type rail, be symmetrically arranged with described grating sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153734.3A CN103909427B (en) | 2014-04-17 | 2014-04-17 | A kind of composite excitation magnetic suspension feeding platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153734.3A CN103909427B (en) | 2014-04-17 | 2014-04-17 | A kind of composite excitation magnetic suspension feeding platform |
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| Publication Number | Publication Date |
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| CN103909427A CN103909427A (en) | 2014-07-09 |
| CN103909427B true CN103909427B (en) | 2016-05-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106564759B (en) * | 2015-07-13 | 2018-08-28 | 南通大学 | The right and wrong combined-circulation type transmission unit of self-driving type magnetic suspension that application field is expanded |
| CN105522400B (en) * | 2016-01-22 | 2019-05-21 | 江苏赐福科技有限公司 | A kind of permanent magnet suspension Miniature machine tool guide rail |
| CN109870261B (en) * | 2019-03-01 | 2020-11-03 | 西北工业大学 | Low-resistance magnetic suspension platform for measuring thrust of micro propeller |
| CN113084536A (en) * | 2021-04-12 | 2021-07-09 | 南通佳润精密科技有限公司 | Magnetic suspension guide rail for angle-adjustable machine tool equipment |
| CN113293523B (en) * | 2021-05-17 | 2022-12-02 | 杭州奇丰科技有限公司 | Reciprocating type water thorn device of magnetic suspension |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1214892C (en) * | 2002-08-30 | 2005-08-17 | 中国科学院长春光学精密机械与物理研究所 | Magnetic suspension method for guide rail with ultra precise and micro displacement |
| CN1244432C (en) * | 2003-10-16 | 2006-03-08 | 上海大学 | Industrial-application type active magnetic suspension machine tool guide linear motor feeding platform |
| CN101024270A (en) * | 2006-12-12 | 2007-08-29 | 大连交通大学 | Numerical-control machine tool magnetic suspension linear feeding system |
| CN201224044Y (en) * | 2008-07-09 | 2009-04-22 | 大连交通大学 | Repulsion force type magnetic floating linear feed system for numerical control machine tool |
| CN102782806A (en) * | 2010-03-04 | 2012-11-14 | 株式会社安川电机 | Stage device |
| CN102001014B (en) * | 2010-11-19 | 2014-04-09 | 沈阳工业大学 | Magnetic suspension feeding platform of long stator hybrid excitation linear synchronous motor |
| CN101972933B (en) * | 2010-11-19 | 2012-02-15 | 沈阳工业大学 | Magnetic suspension motion platform of precision heavy machine tool driven by double linear synchronous motors |
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