CN110994921A - Method for forming potted rotor disc - Google Patents
Method for forming potted rotor disc Download PDFInfo
- Publication number
- CN110994921A CN110994921A CN201911185553.8A CN201911185553A CN110994921A CN 110994921 A CN110994921 A CN 110994921A CN 201911185553 A CN201911185553 A CN 201911185553A CN 110994921 A CN110994921 A CN 110994921A
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- Prior art keywords
- rotor disc
- forming
- glass fiber
- ring
- fiber cloth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a molding method of an encapsulated rotor disc, which comprises a rotor disc and a molding die of the rotor disc, wherein the rotor disc comprises an outer molding ring, a permanent magnet and a glass fiber cloth layer which are formed by encapsulating; secondly, cutting the glass fiber cloth layer into a circle matched with the outer forming ring, cutting a magnet mounting groove on the glass fiber cloth layer, and laying the glass fiber cloth layer on the inner side of the outer forming ring; fourthly, placing the permanent magnet in the magnet mounting groove; fifthly, pouring the resin subjected to vacuum defoaming into the forming mold in a vacuum environment; and sixthly, polishing the rotor disc processed by the encapsulated rotor disc molding method and drilling a through hole, wherein the rotor disc processed by the encapsulated rotor disc molding method has the characteristics of light weight and high strength, and is suitable for the working condition of an axis magnetic field motor at a high rotating speed.
Description
Technical Field
The invention relates to the field of a rotor disc forming method, in particular to a method for forming an encapsulated rotor disc.
Background
The axial magnetic field motor is suitable for working under the working condition of high rotating speed and has the characteristics of small volume and high power density. In actual manufacturing, the machining process of the rotor disc is always difficult, because the mass of the rotor disc is required to be as small as possible, so that the rotating torque is small, and the starting is rapid; however, at high rotational speeds, the centrifugal forces to which the rotor disks, in particular the edge regions, are subjected are very high, and it is a problem how to ensure their mechanical strength. Meanwhile, the rotor disc needs to fix the embedded permanent magnet, so that the embedded permanent magnet cannot fall off.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides a method for molding an encapsulated rotor disc, wherein a glass fiber cloth layer is laid in the rotor disc, and resin after defoaming treatment is adopted for encapsulation molding in a vacuum environment.
The embodiment of the application discloses: the molding method of the encapsulated rotor disc comprises the rotor disc and a molding die of the rotor disc, wherein the rotor disc comprises an outer molding ring, a permanent magnet and a glass fiber cloth layer, the outer molding ring, the permanent magnet and the glass fiber cloth layer are formed by encapsulating, the glass fiber cloth layer is laid in the outer molding ring, the permanent magnet is distributed along the inner side circumference of the outer molding ring, the glass fiber cloth layer is provided with a magnet mounting groove matched with the permanent magnet, and the magnetic steel is arranged in the magnet mounting groove; the method includes the steps of, first, placing the outer mold ring in the molding die; secondly, cutting the glass fiber cloth layer into a circle matched with the outer forming ring, cutting a magnet mounting groove on the glass fiber cloth layer, and laying the glass fiber cloth layer on the inner side of the outer forming ring; fourthly, placing the permanent magnet in the magnet mounting groove; fifthly, pouring the resin subjected to vacuum defoaming into the forming mold in a vacuum environment; and sixthly, polishing the rotor disc processed by the encapsulated rotor disc molding method and drilling a through hole.
Preferably, forming die includes upper cover and base, upper cover and base constitute by the stainless steel material cylinder of same diameter, all be equipped with the screw on upper cover and the base, be equipped with outer shaping ring mounting groove on the base, advance gluey hole and exhaust hole.
Preferably, the outer mold ring is disposed in the outer mold ring installation groove, and a depth of the outer mold ring installation groove is identical to a thickness of the outer mold ring.
Preferably, the outer forming ring is a stainless steel metal ring, and the outer wall of the outer forming ring is attached to the inner wall of the outer forming ring.
Preferably, there are 10 permanent magnets, the glass fiber cloth adopts laser cutting processing, there are 10 magnet mounting grooves in the annular cutting on the glass fiber cloth, the glass fiber cloth layer is laid in the outer forming ring.
Preferably, the outer contour of the permanent magnet is trapezoidal, at least two end faces of the permanent magnet are provided with reinforcing ribs, and the surface of the permanent magnet is coated with the resin.
Preferably, the reinforcing ribs are provided on a pair of parallel surfaces in the thickness direction of the permanent magnet, and the reinforcing ribs are embedded in the potting resin.
Preferably, the glass fiber cloth is DB12K200-1270 carbon fiber axial cloth, and 21 layers of glass fiber cloth are laid in the outer forming ring.
Preferably, the resin is epoxy resin, and the working temperature of the resin is higher than 180 ℃.
Preferably, the thickness of the permanent magnet is identical to that of the outer molding ring.
The invention has the following beneficial effects: the molding method of the encapsulated rotor disc comprises the steps of paving the outer molded ring into a molding mold, paving the glass fiber cloth layer in the outer molded ring, so that the overall weight of the rotor disc is reduced, the overall structure of the rotor disc is strengthened, paving the permanent magnet in a magnet mounting groove of the glass fiber cloth layer, defoaming the resin, pouring the defoamed resin into the molding mold in vacuum, further mechanically polishing the encapsulated rotor disc, and drilling a through hole.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical methods in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of the rotor disk structure.
Fig. 2 is a schematic structural view of the forming die.
Fig. 3 is a schematic structural view of the fiberglass cloth layer mounted on the forming die.
Fig. 4 is a schematic view of the permanent magnet structure.
Reference numerals of the above figures: 1. an outer forming ring; 2. a glass fiber cloth layer; 3. a permanent magnet; 4. a base; 5. an upper cover; 6. forming a mold; 7. an outer forming ring mounting groove; 8. reinforcing ribs; 9. a glue inlet hole; 10. an exhaust hole; 11. a rotor disk; 12. a screw hole; 13. a magnet mounting groove.
Detailed Description
The technical method in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the encapsulated rotor disc molding method includes a rotor disc 11 and a rotor disc molding mold 6, where the rotor disc 11 includes an encapsulated outer molding ring 1, a permanent magnet 3 and a glass fiber cloth layer 2, the glass fiber cloth layer 2 is laid in the outer molding ring 1, the permanent magnet 3 is circumferentially distributed along the inner side of the outer molding ring 1, the glass fiber cloth layer 2 has a magnet mounting groove 13 matching with the permanent magnet 3, and the permanent magnet 3 is disposed in the magnet mounting groove 13; the forming die 6 comprises an upper cover 5 and a base 4, the upper cover 5 and the base 4 are both made of stainless steel cylinders with the same diameter, screw holes 12 are formed in the upper cover 5 and the base 4, the screw holes 12 are used for fixedly connecting the upper cover 5 and the base 6, an outer forming ring mounting groove 7, a glue inlet hole 9 and an exhaust hole 10 are formed in the base 6, the outer forming ring mounting groove 7 is used for mounting the outer forming ring 1, the glue inlet hole 9 is used for pouring glue resin, and the exhaust hole 10 is used for exhausting gas in the forming die 6; the method comprises the steps of, in a first step, placing the outer forming ring 1 in the forming mould 6; secondly, cutting the glass fiber cloth layer 2 into a circle matched with the outer forming ring 1, cutting a magnet mounting groove 13 on the glass fiber cloth layer 2, and laying the glass fiber cloth layer 2 on the inner side of the outer forming ring 1; fourthly, placing the permanent magnet 3 in the magnet mounting groove 13; fifthly, pouring the resin subjected to vacuum defoaming into the forming mold 6 in a vacuum environment; and sixthly, polishing the rotor disc 11 processed by the encapsulated rotor disc molding method and drilling a through hole.
Glass fiber cloth layer 2 adopts laser cutting processing, the annular cutting has 10 on the glass fiber cloth layer 2 with the magnet mounting groove 13 that the permanent magnet 3 matches, glass fiber cloth layer 2 is laid in the outer type ring 1, DB12K200-1270 carbon fiber axial cloth is selected for use on glass fiber cloth layer 2, glass fiber cloth layer 2 is in lay 21 layers in the outer type ring 1, ensure 11 roots in rotor dish have sufficient tensile force, alleviate greatly the whole quality of rotor dish 11 reduces the inertial force that rotor dish 11 received when high-speed rotation prevents its fracture.
The number of the permanent magnets 3 is 10, the outer contour of each permanent magnet 3 is trapezoidal, the thickness of each permanent magnet 3 is consistent with that of the outer forming ring 1, reinforcing ribs 8 are arranged on a pair of parallel surfaces in the thickness direction of each permanent magnet 3, the reinforcing ribs 8 are embedded into the resin after encapsulation in the magnet mounting grooves 13, the permanent magnets 3 are ensured not to fall off when the rotor disc 11 rotates at a high speed, and resin coating films are used on the surfaces of the permanent magnets 3 to protect the permanent magnets 11 from being corroded.
The resin is epoxy resin, the working temperature of the resin is higher than 180 ℃, the rotor disc 11 can work for a long time in a high-temperature environment, the resin is filled into the forming die 6 in a vacuum environment after defoaming treatment, bubbles in the resin are discharged, and the strength of the rotor disc 11 is further improved.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A method of forming an encapsulated rotor disk, comprising: the forming die comprises a rotor disc and a rotor disc, wherein the rotor disc comprises an outer forming ring, a permanent magnet and a glass fiber cloth layer, the outer forming ring, the permanent magnet and the glass fiber cloth layer are formed by glue pouring, the glass fiber cloth layer is laid in the outer forming ring, the permanent magnet is distributed along the inner side circumference of the outer forming ring, the glass fiber cloth layer is provided with a magnet mounting groove matched with the permanent magnet, and the magnetic steel is arranged in the magnet mounting groove;
the method includes the steps of, first, placing the outer mold ring in the molding die; secondly, cutting the glass fiber cloth layer into a circle matched with the outer forming ring, cutting a magnet mounting groove on the glass fiber cloth layer, and laying the glass fiber cloth layer on the inner side of the outer forming ring; fourthly, placing the permanent magnet in the magnet mounting groove; fifthly, pouring the resin subjected to vacuum defoaming into the forming mold in a vacuum environment; and sixthly, polishing the rotor disc processed by the encapsulated rotor disc molding method and drilling a through hole.
2. The method of forming a potted rotor disc of claim 1, wherein: the forming die comprises an upper cover and a base, wherein the upper cover and the base are formed by stainless steel cylinders with the same diameter, screw holes are formed in the upper cover and the base, and an outer forming ring mounting groove, a glue inlet hole and an exhaust hole are formed in the base.
3. The method of forming a potted rotor disc of claim 2, wherein: the outer forming ring is arranged in the outer forming ring mounting groove, and the depth of the outer forming ring mounting groove is consistent with the thickness of the outer forming ring.
4. The method of forming a potted rotor disc of claim 2, wherein: the outer shaping ring is a stainless steel metal ring, and the outer wall of the outer shaping ring is attached to the inner wall of the outer shaping ring mounting groove.
5. The method of forming a potted rotor disc of claim 2, wherein: the permanent magnet has 10, glass fiber cloth adopts laser cutting processing, the annular cutting has 10 magnet mounting grooves on the glass fiber cloth, glass fiber cloth layer is laid in the outer forming ring.
6. The method of forming a potted rotor disc of claim 5, wherein: the outer contour of the permanent magnet is trapezoidal, reinforcing ribs are arranged on at least two end faces of the permanent magnet, and the surface of the permanent magnet is coated with the resin.
7. The method of forming a potted rotor disc of claim 6, wherein: the reinforcing ribs are arranged on a pair of parallel surfaces along the thickness direction of the permanent magnet, and the reinforcing ribs are embedded in the encapsulated resin.
8. The method of forming a potted rotor disc of claim 1, wherein: the glass fiber cloth is DB12K200-1270 carbon fiber axial cloth, and 21 layers of glass fiber cloth are laid in the outer forming ring.
9. The method of forming a potted rotor disc of claim 1, wherein: the resin is epoxy resin, and the working temperature of the resin is higher than 180 ℃.
10. The method of forming a potted rotor disc of claim 1, wherein: the thickness of the permanent magnet is consistent with that of the outer forming ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911185553.8A CN110994921A (en) | 2019-11-27 | 2019-11-27 | Method for forming potted rotor disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911185553.8A CN110994921A (en) | 2019-11-27 | 2019-11-27 | Method for forming potted rotor disc |
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| Publication Number | Publication Date |
|---|---|
| CN110994921A true CN110994921A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911185553.8A Pending CN110994921A (en) | 2019-11-27 | 2019-11-27 | Method for forming potted rotor disc |
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| CN (1) | CN110994921A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008991A (en) * | 2020-08-12 | 2020-12-01 | 山东英特力新材料有限公司 | Process for solving problem of dry cloth in vacuum infusion molding of composite material |
| CN113676005A (en) * | 2021-08-31 | 2021-11-19 | 浙江盘毂动力科技有限公司 | Forming method of silicon steel block of axial switch reluctance motor rotor |
| DE102021002942A1 (en) | 2021-06-09 | 2022-12-15 | Mercedes-Benz Group AG | Process for producing a permanent magnet for an electrical machine, permanent magnet and use of a permanent magnet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2296997A (en) * | 1994-12-02 | 1996-07-17 | Fichtel & Sachs Ag | Fibre reinforced rotor for an electric machine |
| CN1436390A (en) * | 2001-03-24 | 2003-08-13 | Lg电子株式会社 | Mover assembly of reciprocating motor and fabrication method thereof |
| CN102263450A (en) * | 2011-08-25 | 2011-11-30 | 汕头猛狮兆成电动车辆技术有限公司 | Rare earth permanent magnet motor with carbon fiber rotor |
| CN102514207A (en) * | 2011-12-14 | 2012-06-27 | 奇瑞汽车股份有限公司 | Production method of composite material automobile parts |
| CN108400665A (en) * | 2018-05-10 | 2018-08-14 | 邹跃洲 | Motor stator and its manufacturing method, motor |
-
2019
- 2019-11-27 CN CN201911185553.8A patent/CN110994921A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2296997A (en) * | 1994-12-02 | 1996-07-17 | Fichtel & Sachs Ag | Fibre reinforced rotor for an electric machine |
| CN1436390A (en) * | 2001-03-24 | 2003-08-13 | Lg电子株式会社 | Mover assembly of reciprocating motor and fabrication method thereof |
| CN102263450A (en) * | 2011-08-25 | 2011-11-30 | 汕头猛狮兆成电动车辆技术有限公司 | Rare earth permanent magnet motor with carbon fiber rotor |
| CN102514207A (en) * | 2011-12-14 | 2012-06-27 | 奇瑞汽车股份有限公司 | Production method of composite material automobile parts |
| CN108400665A (en) * | 2018-05-10 | 2018-08-14 | 邹跃洲 | Motor stator and its manufacturing method, motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112008991A (en) * | 2020-08-12 | 2020-12-01 | 山东英特力新材料有限公司 | Process for solving problem of dry cloth in vacuum infusion molding of composite material |
| DE102021002942A1 (en) | 2021-06-09 | 2022-12-15 | Mercedes-Benz Group AG | Process for producing a permanent magnet for an electrical machine, permanent magnet and use of a permanent magnet |
| CN113676005A (en) * | 2021-08-31 | 2021-11-19 | 浙江盘毂动力科技有限公司 | Forming method of silicon steel block of axial switch reluctance motor rotor |
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Application publication date: 20200410 |
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