CN103187851A - Linear stepping motor - Google Patents
Linear stepping motor Download PDFInfo
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- CN103187851A CN103187851A CN2011104593835A CN201110459383A CN103187851A CN 103187851 A CN103187851 A CN 103187851A CN 2011104593835 A CN2011104593835 A CN 2011104593835A CN 201110459383 A CN201110459383 A CN 201110459383A CN 103187851 A CN103187851 A CN 103187851A
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- pressing plate
- stepping motor
- linear stepping
- stator cores
- stator core
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Abstract
The invention relates to a linear stepping motor. The linear stepping motor comprises stator cores and press plates, wherein the stator cores are installed on side edges of the press plates, one sides of the stator cores, facing the press plates, are provided with magnetic teeth, and coils are wound on the magnetic teeth. The linear stepping motor is characterized in that two groups of stator cores are provided, the two groups of stator cores are respectively installed on two sides of the press plates, and distances between the two groups of stator cores and the press plates are identical. The linear stepping motor has the advantages that attractive force of a punch and the press plates is balanced or compensated, and therefore net attractive force does not exist on the movable press plates. A large-size bearing is not needed in design, so that performance of the linear stepping motor is greatly improved. Therefore, the linear stepping motor can be integrated in a packed mode, a simple bearing can be used, for example, two linings and two rotary shafts are used, a movable structure leads the punch, and a limitation sensor and a linear encoder can be added extra. The linear stepping motor proves a simple and low-cost solution implementation way.
Description
Technical field
The present invention relates to a kind of linear stepping motor, particularly relate to a kind of linear stepping motor that has improved the stress performance between stator core and the pressing plate and compensated attraction.
Background technology
Stepping motor in the industry cycle is extensive use of for many years.One of advantage: because its simplicity of design need not a large amount of rare-earth magnets, so low cost of manufacture.Another advantage is that its control is simple.Step motor control is open loop, need not complicated closed loop, SERVO CONTROL electronic device and software.
Though stepping motor has above-mentioned advantage, the use of stepping motor is confined to traditional rotating stepper motor to a great extent, even rectilinear motion is no exception.Usually use transmission device, will rotatablely move as belt, ball screw or leading screw converts rectilinear motion to.United States Patent (USP) 6603229bL has introduced this motor and has used rotary stepped machine to rotatablely move to convert straight-line example to.Grappling leading screw and rotating stepper motor are used in this design, and will rotatablely move converts rectilinear motion to.These electromechanics parts wear and tear easily.In addition, because open loop control is used in the control of this motor, the friction that the motion contact component produces also has adverse effect.Any inhomogeneous friction all can influence positioning accuracy.
Though design linear stepping motors that some directly drive in the past, in recent years to the research of direct driving linear stepping motor and newly developed less.One of them reason is that linear electric motors are typically used as drift and pressing plate, require the user that miscellaneous part is designed and is integrated in the complete integrated system.In other words, linear electric motors are difficult for using, and need carry out some engineering projects and could include it in Machine Design.In addition, the air gap that stepping motor requires is very little, in 0.05 * 0.05 millimeter to 0.10 * 0.10 millimeter scope, could effectively utilize magnetic flux usually, produces active force.
Because it is very little to get air gap between forcer windings and the pressing plate grinding tooth, to compare with the power that motor generates, it is very big that the gravitation between drift and the pressing plate becomes.Therefore, support component, guide these parts relative motions and prevent that two parts required bearing that collapses simultaneously must reach greatly enough hard.From the angle of mechanics and control, this gravitation all is disadvantageous.Therefore, follow this type of electric system and what come is huge stiction, this can influence motor response in electric motor starting and the stop operation.The drift motion also needs motor power-supply wire mobile together, has therefore produced bad grabability.In addition, because the drift moving mass is bigger, limit its accessible acceleration, even without any load, also limited the acceleration that drift can reach.Though can moving press plate and fixing drift, the pressing plate gross mass is also very big.This is because pressing plate is made by lamination silicon steel or magnet steel usually, to realize high magnetic permeability.Pressing plate also must be enough thick, and is in order to allow the magnetic flux flow mistake, unlikely saturated.
Summary of the invention
The objective of the invention is in order to solve the existing many defectives of prior art cathetus stepping motor, provide a kind of stress performance that has improved between stator core and the pressing plate to solve the problems referred to above with the linear stepping motor that compensates attraction.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of linear stepping motor, comprise stator core and pressing plate, described stator core is arranged at the side of pressing plate, the side that described stator core faces pressing plate is provided with the magnetic tooth, be wound with coil on the magnetic tooth, it is characterized in that, described stator core comprises two groups, two groups of stator cores are arranged at the both sides of pressing plate respectively, and two groups of stator cores are identical apart from the distance of pressing plate.
Above-mentioned a kind of linear stepping motor is characterized in that, described stator core is provided with four magnetic teeth, is wound with coil on each magnetic tooth.
Above-mentioned a kind of linear stepping motor is characterized in that, described pressing plate is piled up by the tab laminate steel and forms, and the end face of described pressing plate and bottom surface are provided with a plurality of grinding tooths.
Above-mentioned a kind of linear stepping motor is characterized in that, described every group of stator core comprises two stator cores, and parallel placement between two stator cores, connects by permanent magnet between two stator cores.
Above-mentioned a kind of linear stepping motor, it is characterized in that, described pressing plate is a monoblock, and the end face of pressing plate is respectively arranged with two parallel grinding tooths along the setting of pressing plate bearing of trend with the bottom surface, and four described two groups stator cores are arranged at the grinding tooth outside of pressing plate both sides respectively.
Above-mentioned a kind of linear stepping motor is characterized in that, described pressing plate is two, and the end face of described every block pressur plate and end face are provided with a grinding tooth, and four described two groups stator cores are arranged at the grinding tooth outside of two block pressur plate both sides respectively.
Above-mentioned a kind of linear stepping motor is characterized in that, described every group of stator core comprises two stator cores, and parallel placement between two stator cores, connects by contiguous block between two stator cores.
Above-mentioned a kind of linear stepping motor, it is characterized in that described pressing plate is two, the end face of described every block pressur plate and end face are provided with a grinding tooth, connect by permanent magnet between two block pressur plates, four described two groups stator cores are arranged at the grinding tooth outside of two block pressur plate both sides respectively.
Above-mentioned a kind of linear stepping motor is characterized in that, described a kind of linear stepping motor comprises plural pressing plate, and described every group of stator core comprises the stator core that equates with pressing plate quantity.
Above-mentioned a kind of linear stepping motor, it is characterized in that, also comprise shell, be connected with guiding device on the described pressing plate, described guiding device comprises two axle sleeves that are connected the pressing plate both sides and is arranged at two interior rotating shafts of two axle sleeves that the two ends of described two rotating shafts are connected on the end walls of shell.
Above-mentioned a kind of linear stepping motor, it is characterized in that, the axle sleeve of described pressing plate one side is provided with limit switch, at the restricted transducer of the corresponding arranged outside of limit switch, the axle sleeve of described pressing plate opposite side is provided with the grating chi, in the corresponding arranged outside of grating chi linear encoder read head is arranged.
Above-mentioned a kind of linear stepping motor is characterized in that, described guiding device can also be one of them of the following: linear bearing, resin bearing, air bearing.
Beneficial effect of the present invention: in the present invention, the attraction of drift and pressing plate obtains balance or compensation, does not therefore have net positive suction head power on movable pressing board.Need not large size bearing in the design, the linear stepping motor performance improves greatly.Therefore, linear stepping motor of the present invention can be packed integrated, wherein can use simple bearing, as two linings and two rotating shafts, with the bascule of pilot punch, and can additionally add limiting sensor and linear encoder.This provides simple, a cheap solution execution mode to the user.
Description of drawings
Fig. 1 is cutaway view figure of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cutaway view;
Fig. 3 is that the B-B of Fig. 1 is to cutaway view;
Fig. 4 forms the schematic diagram of pressing plate for stack tab laminate steel disc;
Fig. 5 is the structural representation of application state of the present invention;
Fig. 6 is the structural representation of the embodiment of employing three block pressur plates;
Fig. 7 is the schematic diagram of the another kind of embodiment of the present invention;
Fig. 8 is the schematic diagram of another embodiment of the present invention.
Embodiment
Further understand and understanding for making architectural feature of the present invention and the effect reached had, cooperate detailed explanation in order to preferred embodiment and accompanying drawing, be described as follows:
Referring to Fig. 1, a kind of linear stepping motor, comprise stator core 100 and pressing plate 200, stator core 100 is arranged at the side of pressing plate 200, the side that stator core 100 faces pressing plate 200 is provided with magnetic tooth 110, is wound with coil 120 on the magnetic tooth 110, and stator core 100 comprises two groups, two groups of stator cores 100 are arranged at the both sides of pressing plate 200 respectively, and two groups of stator cores 100 are identical apart from the distance of pressing plate 200.
And stator core 100 is provided with four magnetic teeth 110, all is wound with coil 120 on each magnetic tooth 110.Pressing plate 200 is piled up by the tab laminate steel and forms, and the end face of pressing plate 200 and bottom surface are provided with a plurality of grinding tooths 210.
Referring to Fig. 2, every group of stator core 100 comprises two stator cores 100, and parallel placement between two stator cores 100, connects by permanent magnet 300 between two stator cores 100.
Referring to Fig. 3, the end face of pressing plate 200 is respectively arranged with two parallel grinding tooths 210 along the setting of pressing plate 200 bearing of trends with the bottom surface, four stator cores 100 of two groups are arranged at grinding tooth 210 outsides of pressing plate 200 both sides respectively, in this embodiment, pressing plate 200 is a monoblock pressing plate, and the end face of pressing plate 200 is respectively arranged with two parallel grinding tooths 210 along the setting of pressing plate 200 bearing of trends with the bottom surface.
In other preferred embodiments, pressing plate 200 also can be two, the end face of every block pressur plate 200 and end face are provided with between a grinding tooth 210, two block pressur plates 200 and connect by permanent magnet, and four stator cores 100 of two groups are arranged at grinding tooth 210 outsides of two block pressur plates, 200 both sides respectively.
Referring to Fig. 4, pressing plate 200 need not very thick, because do not need to use the break iron that is used for flux return in the design in the past.In addition, because pressing plate 200 made by the tagger lamination usually, reducing eddy current, so magnetic flux can improve electric efficiency at same direction these laminations of flowing through.
Referring to Fig. 1, on this position, when coil 120 kept fixedly with exciting current energising and two groups of stator cores 100, pressing plate 200 moved to a method; Put upside down the exciting current direction, pressing plate 200 just can move round about.
Referring to Fig. 5, be connected with guiding device 400 on the pressing plate 200, guiding device 400 comprises two axle sleeves 410 that are connected pressing plate 200 both sides and two rotating shafts 420 that are arranged in two axle sleeves 410, the two ends of two rotating shafts 420 are connected on the end walls of shell 430, thereby pressing plate 200 are supported and guides the movement locus of pressing plate.
The axle sleeve 410 of pressing plate 200 1 sides is provided with limit switch 510, and at the corresponding restricted transducer 520 of arranged outside of limit switch 510, limit switch 510 and limiting sensor 520 are used and carry out spacing to pressing plate 200; The axle sleeve 410 of pressing plate opposite side is provided with grating chi 610, in grating chi 610 corresponding arranged outside linear encoder read head 620 is arranged, and reads the movement position of pressing plate 200 by the cooperation of grating chi 610 and linear encoder read head 620.
And in the present invention, guiding device 400 can also be one of them of the following: linear bearing, resin bearing, air bearing.
Referring to Fig. 6, a kind of linear stepping motor of the present invention can also comprise plural pressing plate 200, and every group of stator core 100 comprises the stator core 100 that equates with pressing plate 200 quantity.One of them concrete embodiment is, comprises three block pressur plates 200, and every group of stator core 100 comprises between 100, three stator cores of three stator cores that be arranged in parallel and connecting by permanent magnet 300.Such design can be so that the magnetic flux of inner process be original twice.
Referring to Fig. 7, Fig. 7 is the schematic diagram of the another kind of embodiment of the present invention, a kind of linear stepping motor, pressing plate 200 is a monoblock pressing plate, the end face of pressing plate 200 is respectively arranged with two parallel grinding tooths 210 along the setting of pressing plate 200 bearing of trends with the bottom surface, pressing plate 200 both sides are provided with two groups of stator cores 100, and every group of stator core 100 comprises two stator cores 100, connect by permanent magnet 300 between two stator cores 100 of every group.
Referring to Fig. 8, Fig. 8 is the schematic diagram of another embodiment of the present invention, comprise two block pressur plates 200 in the present embodiment, the end face of every block pressur plate 200 and end face are provided with a grinding tooth 210, connect by permanent magnet between two block pressur plates 200, be provided with two groups of stator cores 100 in the both sides of two block pressur plates 200, every group of stator core 100 comprises two blocks of stator iron, 100, and parallel placement between two stator cores 100, connect by contiguous block 310 between two stator cores 100, two stator cores 100 are as a whole with the contiguous block 310 that is connected them, and four stator cores 100 of two groups are arranged at grinding tooth 210 outsides of two block pressur plates, 200 both sides respectively.
In sum, it only is preferred embodiment of the present invention, be not to limit scope of the invention process, all equalizations of doing according to the described shape of claim scope of the present invention, structure, feature and spirit change and modify, and all should be included in the claim scope of the present invention.
Claims (12)
1. linear stepping motor, comprise stator core and pressing plate, described stator core is arranged at the side of pressing plate, the side that described stator core faces pressing plate is provided with the magnetic tooth, be wound with coil on the magnetic tooth, it is characterized in that, described stator core comprises two groups, two groups of stator cores are arranged at the both sides of pressing plate respectively, and two groups of stator cores are identical apart from the distance of pressing plate.
2. according to the described a kind of linear stepping motor of claim 1, it is characterized in that described stator core is provided with four magnetic teeth, be wound with coil on each magnetic tooth.
3. according to the described a kind of linear stepping motor of claim 2, it is characterized in that described pressing plate is piled up by the tab laminate steel and forms, the end face of described pressing plate and bottom surface are provided with a plurality of grinding tooths.
4. according to the described a kind of linear stepping motor of claim 3, it is characterized in that described every group of stator core comprises two stator cores, and parallel placement between two stator cores, connect by permanent magnet between two stator cores.
5. according to the described a kind of linear stepping motor of claim 4, it is characterized in that, described pressing plate is a monoblock, and the end face of pressing plate is respectively arranged with two parallel grinding tooths along the setting of pressing plate bearing of trend with the bottom surface, and four described two groups stator cores are arranged at the grinding tooth outside of pressing plate both sides respectively.
6. according to the described a kind of linear stepping motor of claim 4, it is characterized in that described pressing plate is two, the end face of described every block pressur plate and end face are provided with a grinding tooth, and four described two groups stator cores are arranged at the grinding tooth outside of two block pressur plate both sides respectively.
7. according to the described a kind of linear stepping motor of claim 3, it is characterized in that described every group of stator core comprises two stator cores, and parallel placement between two stator cores, connect by contiguous block between two stator cores.
8. according to the described a kind of linear stepping motor of claim 7, it is characterized in that, described pressing plate is two, the end face of described every block pressur plate and end face are provided with a grinding tooth, connect by permanent magnet between two block pressur plates, four described two groups stator cores are arranged at the grinding tooth outside of two block pressur plate both sides respectively.
9. according to the described a kind of linear stepping motor of claim 3, it is characterized in that described a kind of linear stepping motor comprises plural pressing plate, described every group of stator core comprises the stator core that equates with pressing plate quantity.
10. according to the described a kind of linear stepping motor of claim 1, it is characterized in that, also comprise shell, be connected with guiding device on the described pressing plate, described guiding device comprises two axle sleeves that are connected the pressing plate both sides and is arranged at two interior rotating shafts of two axle sleeves that the two ends of described two rotating shafts are connected on the end walls of shell.
11. according to the described a kind of linear stepping motor of claim 10, it is characterized in that, the axle sleeve of described pressing plate one side is provided with limit switch, at the restricted transducer of the corresponding arranged outside of limit switch, the axle sleeve of described pressing plate opposite side is provided with the grating chi, in the corresponding arranged outside of grating chi linear encoder read head is arranged.
12., it is characterized in that described guiding device can also be one of them of the following: linear bearing, resin bearing, air bearing according to the described a kind of linear stepping motor of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104593835A CN103187851A (en) | 2011-12-30 | 2011-12-30 | Linear stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104593835A CN103187851A (en) | 2011-12-30 | 2011-12-30 | Linear stepping motor |
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| Publication Number | Publication Date |
|---|---|
| CN103187851A true CN103187851A (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104593835A Pending CN103187851A (en) | 2011-12-30 | 2011-12-30 | Linear stepping motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884473A (en) * | 2020-07-21 | 2020-11-03 | 华中科技大学 | Like-pole electrically excited linear synchronous motor |
| CN112271902A (en) * | 2020-10-22 | 2021-01-26 | 长航集团武汉电机有限公司 | Same-pole hybrid excitation linear synchronous motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370577A (en) * | 1980-07-22 | 1983-01-25 | Matsushita Electric Industrial Co., Ltd. | Linear motor |
| FR2510838A1 (en) * | 1981-07-28 | 1983-02-04 | Od Polt Institut | Double-coordinate linear electric drive - has two=part moving core with ferromagnetic bridge and vertical slots for control windings |
| US5093596A (en) * | 1990-10-24 | 1992-03-03 | Ibm Corporation | Combined linear-rotary direct drive step motor |
| JPH0823669A (en) * | 1994-07-04 | 1996-01-23 | Copal Co Ltd | Linear actuator |
| CN202405990U (en) * | 2011-12-30 | 2012-08-29 | 雅科贝思精密机电(上海)有限公司 | Linear stepping motor |
-
2011
- 2011-12-30 CN CN2011104593835A patent/CN103187851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370577A (en) * | 1980-07-22 | 1983-01-25 | Matsushita Electric Industrial Co., Ltd. | Linear motor |
| FR2510838A1 (en) * | 1981-07-28 | 1983-02-04 | Od Polt Institut | Double-coordinate linear electric drive - has two=part moving core with ferromagnetic bridge and vertical slots for control windings |
| US5093596A (en) * | 1990-10-24 | 1992-03-03 | Ibm Corporation | Combined linear-rotary direct drive step motor |
| JPH0823669A (en) * | 1994-07-04 | 1996-01-23 | Copal Co Ltd | Linear actuator |
| CN202405990U (en) * | 2011-12-30 | 2012-08-29 | 雅科贝思精密机电(上海)有限公司 | Linear stepping motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884473A (en) * | 2020-07-21 | 2020-11-03 | 华中科技大学 | Like-pole electrically excited linear synchronous motor |
| CN111884473B (en) * | 2020-07-21 | 2021-12-17 | 华中科技大学 | Like-pole electrically excited linear synchronous motor |
| CN112271902A (en) * | 2020-10-22 | 2021-01-26 | 长航集团武汉电机有限公司 | Same-pole hybrid excitation linear synchronous motor |
| CN112271902B (en) * | 2020-10-22 | 2022-07-05 | 长航集团武汉电机有限公司 | Same-pole hybrid excitation linear synchronous motor |
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Application publication date: 20130703 |