CN1612448A - Magnetic body fixing structure for linear electric motor rotor assembly and its fixing method - Google Patents
Magnetic body fixing structure for linear electric motor rotor assembly and its fixing method Download PDFInfo
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- CN1612448A CN1612448A CN 200310106781 CN200310106781A CN1612448A CN 1612448 A CN1612448 A CN 1612448A CN 200310106781 CN200310106781 CN 200310106781 CN 200310106781 A CN200310106781 A CN 200310106781A CN 1612448 A CN1612448 A CN 1612448A
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Abstract
The structure for fixing magnet comprises frame of magnet, slot for installing magnet and magnetic body. Frame of magnet in cylindrical form is setup between outer stator and inner stator. There is a gap between the frame and outer stator and between the frame and inner stator. Slots for installing magnets are formed on circumferential face. Through embedding lining casting method, magnetic bodies are fixed on slots for installing magnets in frame of magnet in integration. Advantages are: embedding lining casting method raises intensity of frame of magnet, and size precision of slots for installing magnets as well as prevent frame of magnet from breakage or magnetic body from backing out from installation slot. The invention reduces number of part for fixing magnetic body, simplifies manufacturing process and lowers production cost.
Description
Technical field
The present invention relates to a kind of linear electric motors, particularly relate to magnet fixed structure and fixing means thereof in a kind of linear motor rotor assembly.
Background technology
Linear electric motors are a kind of devices that electric energy are directly changed into oscillating rectilinear motion mechanical energy.Linear electric motors generally comprise stator and mover, and mover is made oscillating rectilinear motion under the effect of the variation magnetic field that stator produces.
In linear electric motors, stator module is made up of external stator cylindraceous and internal stator, has certain interval between external stator and the internal stator; Mover assembly is installed between external stator and the internal stator; On described external stator or the internal stator coil is installed; On the position corresponding to stator coil on the mover assembly, magnet is installed; Magnet on the mover assembly drives mover assembly and makes oscillating rectilinear motion under the action of a magnetic field that stator coil produces.
Fig. 1 is the cutaway view of existing linear electric motors; Fig. 2 is a mover significant points section enlarged diagram in the existing linear electric motors.
As depicted in figs. 1 and 2, existing linear electric motors comprise: stator module 10 and mover assembly 20; Stator module 10 magnetic field that can change; Mover assembly 20 can be made oscillating rectilinear motion under the effect of the variation magnetic field that stator module 10 produces.
Described stator module 10 is made up of external stator 11 and internal stator 12; External stator 11 cylindrical shapes, the inboard of external stator 11 embeds coil C, the also cylindrical shape of internal stator 12; External stator 11 is enclosed within the outside of internal stator 12, leaves certain interval between the two.
Described external stator 11 is formed by stacking by some thin carbon steel plates, the breach that each carbon steel plate all has a shape and coil C to adapt, and these thin carbon steel plates are built up after the external stator 11, and just side has formed the embedded groove of coil C within it; Described internal stator 12 is formed by stacking by the thin carbon steel plate of several rectangles.
Described mover assembly 20 comprises: magnet framework 21, magnet 22 and magnet fixed mechanism 23; Magnet framework 21 is arranged between external stator 11 and the internal stator 12, leaves the gap with external stator 11 and internal stator 12 respectively; Magnet 22 is arranged in the magnet mounting groove 21a on magnet framework 21 outer peripheral faces, and its position is corresponding with the coil C on the stator module 10; The interior magnet 22 of magnet mounting groove 21a that magnet fixed mechanism 23 will be arranged on the magnet framework 21 is fixed.
Described magnet framework 21 is made by stainless steel material, and its body shape is the drum identical with external stator 11 and internal stator 12.As shown in Figure 2, magnet framework 21 with the corresponding outer peripheral face of external stator 11 coil C on, form the rectangular magnet mounting groove 21a that several have certain depth equally spacedly along circumferencial direction.
Described magnet fixed mechanism 23 comprises wire-coated 23a and sclerosis adhesive linkage 23b; Wire-coated 23a is made by composite materials such as carbon fibers, is wrapped on the peripheral surface of magnet 22 magnet 22 is banded in magnet mounting groove 21a firmly; Sclerosis adhesive linkage 23b is a kind of bonding agent, is coated in the surface of wire-coated 23a, and after-hardening just forms sclerosis adhesive linkage 23 between the bonding agent infiltration wire-coated 23a, and 23a further firmly fixes with wire-coated.
The making and the assembling process of the mover assembly of above-mentioned existing linear electric motors are as follows:
At first, utilize sheet metal to manufacture the cardinal principle framework of magnet framework 21, form several inwardly recessed magnet mounting groove 21a at the regulation position of this magnet framework 21; Meanwhile, magnet 22 is processed into the size and dimension of regulation, prepares assembling mover assembly 20.
Then, among each magnet mounting groove 21a on magnet framework 21 outer circumference surfaces, insert magnet 22 respectively, utilize reel winder that the wire rod made from carbon fiber is wrapped on the peripheral surface of magnet 22, finish the preliminary assembling of above-mentioned magnet 22.
Then, on the surface of the wire-coated 23a on magnet 22 peripheral surface, smear bonding agent, bonding agent is infiltrated between the wire-coated 23a, and harden, form sclerosis adhesive linkage 23b, wire-coated 23a is bonded on the magnet 22 firmly.So far, the making of mover assembly and assembling process promptly come to an end.
The operation principle of above-mentioned existing linear electric motors is: after the linear electric motors energising starts, produce electric current in the coil C, coil C just produces a kind of variation magnetic field of closo between external stator 11 and internal stator 12, along with the sense of current among the coil C changes, this magnetic direction also changes thereupon, magnet 22 drives magnet framework 21 and makes oscillating rectilinear motion under the effect in the magnetic field of this variation.
There is following shortcoming in above-mentioned existing linear electric motors: magnet framework 21 is processed by sheet metal, therefore the wall ratio of magnet mounting groove 21a is thinner, sheet metal processing back intensity decreases, damaged easily, therefore be difficult to make the size of magnet mounting groove 21a very accurate, after magnet 22 is assembled in magnet mounting groove 21a, be easy to break away from magnet mounting groove 21a.
In addition, magnet fixed mechanism 23 is to utilize wire coil such as carbon fiber behind magnet 22, fixes by adhesive bond again, has brought the problem that technology is loaded down with trivial details, production efficiency descends, production cost increases; Sometimes because the adhesive strength deficiency of wire-coated exists the hidden danger that magnet 22 breaks away from magnet mounting groove 21a.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of the magnet fixed structure in the above-mentioned existing linear motor rotor assembly, a kind of intensity that improves the magnet framework and accuracy to size, magnet fixed structure and the fixing means thereof in fixed magnets, production cost is low, production efficiency the is high linear motor rotor assembly firmly are provided.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: linear electric motors comprise: stator module and mover assembly; Described stator module comprises: external stator and internal stator, and the cylindrical shape of external stator, the inboard of external stator embeds coil, the also cylindrical shape of internal stator; External stator is enclosed within the outside of internal stator, leaves certain interval between the two; Described mover assembly comprises: magnet framework, magnet mounting groove and magnet; The cylindrical shape of magnet framework is arranged between external stator and the internal stator, leaves the gap with external stator and internal stator respectively; Described magnet mounting groove is formed on the outer peripheral face of magnet framework.
Magnet fixed structure in the linear motor rotor assembly of the present invention is: utilize embedding lining casting method that magnet integrally is fixed in the magnet mounting groove on the magnet framework.
Described magnet mounting groove is toroidal, and magnet is and the corresponding toroidal of the shape of magnet mounting groove.
Described magnet mounting groove can also be the equidistant rectangular channel that forms of several outer peripheral faces along the magnet framework, and magnet is and the corresponding rectangular shape of the shape of each magnet mounting groove.
Magnet fixing means in the linear motor rotor assembly of the present invention comprises: step a: put into magnet at mould inside; Step b: with the mould closure, inject stainless steel series metal liquation by inlet in mold cavity, the embedding lining is cast as the magnet framework.
After above-mentioned embedding lining casting process was finished, magnet just was securely fixed on the magnet framework.
Magnet fixing means in the linear motor rotor assembly of the present invention can also be to comprise: step a: at first produce the magnet framework that has the magnet mounting groove, and this magnet framework is put into the mould that can contain the magnet mounting groove; Step b: with the mould closure, in mold cavity, inject the magnet liquation, cast out magnet at the embedded lining of magnet mounting groove by inlet.
After above-mentioned embedding lining casting process was finished, magnet just was securely fixed in the magnet mounting groove on the magnet framework.
The invention has the beneficial effects as follows: utilize embedding lining casting method that magnet is fixed on the magnet framework, not only can improve the intensity of magnet framework, improve the accuracy of magnet mounting groove size, and can also prevent that the breakage of magnet framework or magnet from deviating from from the magnet mounting groove, improved the reliability of linear electric motors.In addition, can reduce the part count that is used for fixing magnet, simplify manufacturing process, reduce production costs significantly.
Description of drawings
Fig. 1 is the cutaway view of existing linear electric motors.
Fig. 2 is a mover significant points section enlarged diagram in the existing linear electric motors.
Fig. 3 is the cutaway view of the magnet fixed structure in the linear motor rotor assembly of the present invention;
Fig. 4 is the significant points section enlarged diagram of mover among Fig. 3;
Fig. 5 is a kind of manufacture process schematic diagram of the magnet in Fig. 3 cathetus electric mover assembly;
Fig. 6 is the another kind of manufacture process schematic diagram of the magnet in Fig. 3 cathetus electric mover assembly.
Among the figure:
10: stator module 11: external stator
12: internal stator 100: mover assembly
110: magnet framework 111: the magnet mounting groove
111a: inclined plane 120: magnet
121: inclined plane M: mould
H: inlet
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Fig. 3 is the cutaway view of the magnet fixed structure in the linear motor rotor assembly of the present invention; Fig. 4 is the significant points section enlarged diagram of mover among Fig. 3.
As shown in Figure 3 and Figure 4, linear electric motors comprise: stator module 10 and mover assembly 100; Stator module 10 is made up of external stator 11 and internal stator 12; External stator 11 cylindrical shapes, the inboard of external stator 11 embeds coil C, the also cylindrical shape of internal stator 12; External stator 11 is enclosed within the outside of internal stator 12, leaves gap (t1) between the two.
Described external stator 11 is formed by stacking by some thin carbon steel plates, the breach that each carbon steel plate all has a shape and coil C to adapt, and these thin carbon steel plates are built up after the external stator 11, and just side has formed the embedded groove of coil C within it; Described internal stator 12 is formed by stacking by the thin carbon steel plate of several rectangles.
Described mover assembly 100 is made up of magnet framework 110 and magnet 120; Magnet framework 110 is arranged between external stator 11 and the internal stator 12, leaves the gap with external stator 11 and internal stator 12 respectively; Magnet 120 utilizes embedding lining casting method to be formed on the outer circumference surface of magnet framework 110, and its position is corresponding with the coil C of stator module 10.
Described magnet framework 110 is formed with the magnet mounting groove 111 that is used for installing magnet 120 on outer circumference surface; Magnet framework 110 cylindrical shapes utilize embedding lining casting method and magnet 120 one-body molded.
The bottom surface of described magnet mounting groove 111 can be the plane, also can be curved surface; Inclined plane 121 or cascaded surface (not shown) corresponding to magnet 120 on the madial wall of magnet mounting groove 111 are formed with corresponding anti-obliquity face 111a or anti-cascaded surface (not shown), thereby form the fixedly sill of magnet 120.
Described magnet 120 can be toroidal, and embedding lining is cast in the magnet mounting groove 111 on the outer circumference surface of magnet framework 110; Also can rectangular shaped, be cast in corresponding each magnet mounting groove 111 along the outer circumference surface embedding equally spacedly lining of magnet framework 110.
In addition, as shown in Figure 4, the front/rear sidewall of magnet 120 its directions of motion of upper edge or its four sides sidewall are preferably formed as inclined plane 121 or cascaded surface, thereby make the bottom of the magnet mounting groove 111 on magnet 120 and the magnet framework 110 contact face width, the top contact-making surface of the magnet mounting groove 111 on ear and the magnet framework 110 is narrow, magnet 120 is stuck in the magnet mounting groove 111 on the magnet framework 110, can firmly fix magnet 120 more.
The manufacturing process of above-mentioned linear motor rotor assembly is as follows:
Fig. 5 is a kind of manufacture process schematic diagram of the magnet in Fig. 3 cathetus electric mover assembly; Fig. 6 is the another kind of manufacture process schematic diagram of the magnet in Fig. 3 cathetus electric mover assembly.
As shown in Figure 5, when making annular or rectangular magnet 120, at first put into the magnet 120 (step a) of Fig. 5 to the mould that possesses certain space (M) inside.
Then, with mould (M) closure, inject stainless steel series metal liquation by inlet h, the embedding lining is cast as the magnet framework 110 (step b) of Fig. 5.
After above-mentioned embedding lining casting process was finished, magnet 120 just was securely fixed on the magnet framework 110.
In addition, the another kind of manufacturing process of linear motor rotor assembly is, at first makes the magnet framework, utilizes embedding lining casting method moulding magnet again.
As shown in Figure 6, at first produce the magnet framework 110 (step a) of Fig. 6 that has magnet mounting groove 111 by metallic plate or Mould Machining.
Then, in the magnet mould that can contain magnet mounting groove 111, put into magnet framework 110, inject the magnet liquation, cast out the magnet 120 (step b) of Fig. 6 at magnet mounting groove 111 embedded linings by inlet h.
After above-mentioned embedding lining casting process was finished, magnet 120 just was securely fixed in the magnet mounting groove 111 on the magnet framework 110.
In sum, the present invention makes the magnet framework by embedding lining casting and molding method, has both strengthened the intensity of magnet framework, simultaneously magnet mounting groove and magnet is combined closely, help accurate control assembly size and prevent that magnet breaks away from the magnet mounting groove, thereby improved the reliability of linear electric motors.
In addition, can also reduce the part count that is used for fixing magnet, simplified manufacturing technique, and utilize mould to produce accurate in size mover assembly in enormous quantities, can reduce production costs.
In addition, utilize embedding lining casting method that magnet is fixed on the magnet framework, can make on the sidewall of the magnet mounting groove on the magnet frame frame and form inclined plane or cascaded surface, thereby can firmly fix magnet more.
Claims (6)
1. the magnet fixed structure in the linear motor rotor assembly comprises: magnet framework, magnet mounting groove and magnet; The cylindrical shape of magnet framework is arranged between external stator and the internal stator, leaves the gap with external stator and internal stator respectively; Described magnet mounting groove is formed on the outer peripheral face of magnet framework; It is characterized in that: described magnet (120) utilizes embedding lining casting method integrally to be fixed in the magnet mounting groove (111) on the magnet framework (110).
2. the magnet fixed structure in the linear motor rotor assembly according to claim 1 is characterized in that: described magnet mounting groove (111) is toroidal, and magnet (120) is the corresponding toroidal of shape with magnet mounting groove (111).
3. the magnet fixed structure in the linear motor rotor assembly according to claim 1, it is characterized in that: described magnet mounting groove (111) is the equidistant rectangular channel that forms of several outer peripheral faces along the magnet framework, and magnet (120) is the corresponding rectangular shape of shape with each magnet mounting groove (111).
4. according to the magnet fixed structure in claim 1, the 2 and 3 described linear motor rotor assemblies, it is characterized in that: the front/rear sidewall of its direction of motion of described magnet (120) upper edge or its four sides sidewall form inclined plane (121) or cascaded surface.
5. the fixing means of the magnet fixed structure in the linear motor rotor assembly according to claim 1 is characterized in that: comprising: step a: put into magnet (120) in mould (M) inside; Step b: with mould (M) closure, inject stainless steel series metal liquation by inlet (h) in mold cavity, the embedding lining is cast as magnet framework (110); After above-mentioned embedding lining casting process was finished, magnet (120) just was securely fixed in the magnet mounting groove (111) on the magnet framework (110).
6. the fixing means of the magnet fixed structure in the linear motor rotor assembly according to claim 1, it is characterized in that: step a: at first produce the magnet framework (110) that has magnet mounting groove (111), and this magnet framework (110) is put into the mould (M) that can contain magnet mounting groove (111); Step b: with mould (M) closure, in mold cavity, inject the magnet liquation, cast out magnet (120) at the embedded lining of magnet mounting groove (111) by inlet (h); After above-mentioned embedding lining casting process was finished, magnet (120) just was securely fixed in the magnet mounting groove (111) on the magnet framework (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106781 CN1612448A (en) | 2003-10-30 | 2003-10-30 | Magnetic body fixing structure for linear electric motor rotor assembly and its fixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106781 CN1612448A (en) | 2003-10-30 | 2003-10-30 | Magnetic body fixing structure for linear electric motor rotor assembly and its fixing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1612448A true CN1612448A (en) | 2005-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310106781 Pending CN1612448A (en) | 2003-10-30 | 2003-10-30 | Magnetic body fixing structure for linear electric motor rotor assembly and its fixing method |
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| Country | Link |
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| CN (1) | CN1612448A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394112B (en) * | 2007-09-17 | 2014-01-08 | 陈理文 | Highly efficient electricity generator |
| CN105406681A (en) * | 2014-09-12 | 2016-03-16 | 上海日立电器有限公司 | Linear motor rotor |
| CN108847764A (en) * | 2018-07-26 | 2018-11-20 | 珠海格力电器股份有限公司 | A kind of magnet plate and linear motor of linear motor |
-
2003
- 2003-10-30 CN CN 200310106781 patent/CN1612448A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394112B (en) * | 2007-09-17 | 2014-01-08 | 陈理文 | Highly efficient electricity generator |
| CN105406681A (en) * | 2014-09-12 | 2016-03-16 | 上海日立电器有限公司 | Linear motor rotor |
| CN108847764A (en) * | 2018-07-26 | 2018-11-20 | 珠海格力电器股份有限公司 | A kind of magnet plate and linear motor of linear motor |
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| WD01 | Invention patent application deemed withdrawn after publication |