CN110994824B - Novel motor rotor iron core, rotor and motor - Google Patents
Novel motor rotor iron core, rotor and motor Download PDFInfo
- Publication number
- CN110994824B CN110994824B CN201911244156.3A CN201911244156A CN110994824B CN 110994824 B CN110994824 B CN 110994824B CN 201911244156 A CN201911244156 A CN 201911244156A CN 110994824 B CN110994824 B CN 110994824B
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- rotor
- punching
- magnetic
- piece
- rotor core
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
The utility model provides a novel electric motor rotor iron core, rotor, motor, relates to motor technical field, and this novel electric motor rotor iron core includes a plurality of towards the piece that stacks the setting, it includes a plurality of first towards the piece and a plurality of second towards the piece to press towards the piece, and is a plurality of fold and press the setting first towards the piece be and fold and press the setting a plurality of the both ends of first towards the piece are stacked respectively and have a plurality ofly the second towards the piece, and are a plurality of the second is towards the piece and is seted up a plurality of through-holes that are used for placing magnetic part. The punching sheets are divided into the first punching sheet and the second punching sheet, the second punching sheet is provided with a plurality of through holes for placing magnetic parts, the second punching sheet is laminated at two ends of the laminated first punching sheet to form a new rotor core, and the magnetic parts are placed in the through holes to correct dynamic balance, so that the aim of removing a rotor baffle is fulfilled, the material cost is reduced, and meanwhile, the magnetic parts replace dynamic balance screws to increase the overall magnetism of the rotor, and the performance of the motor is favorably optimized.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a novel motor rotor core, a rotor and a motor.
Background
The rotor of the existing permanent magnet auxiliary synchronous reluctance motor is composed of a rotor shaft, a rotor core, magnetic steel, a rotor baffle plate and a dynamic balance screw (used for correcting dynamic balance), wherein the dynamic balance is corrected by using the rotor baffle plate, forming a threaded hole in the rotor baffle plate and using the dynamic balance screw. The rotor baffle plate with the structure is only used for balancing weight to perform dynamic balance correction, so that materials of the rotor baffle plate are added for correcting the dynamic balance.
Disclosure of Invention
One of the purposes of the invention is to provide a novel motor rotor core which can achieve the purpose of correcting dynamic balance while removing a rotor baffle, thereby reducing the material cost.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a novel motor rotor core, including a plurality of lamination settings towards the piece, it is a plurality of to include a plurality of first towards the piece and a plurality of second towards the piece, and is a plurality of fold and press the setting towards the piece first towards the piece be and fold and press the setting, a plurality of fold and press the setting the both ends of first towards the piece are respectively fold and are pressed a plurality ofly the second towards the piece, it is a plurality of the second is seted up a plurality of through-holes that are used for placing magnetic part towards the piece. The punching sheets are divided into the first punching sheet and the second punching sheet, a plurality of through holes used for placing magnetic parts are formed in the second punching sheet, the second punching sheet is laminated at two ends of the laminated first punching sheet to form a new rotor core, the magnetic parts are placed inside the through holes to correct dynamic balance, and therefore the purpose of removing a rotor baffle is achieved, material cost is reduced, meanwhile, the magnetic parts replace dynamic balance screws to increase the overall magnetism of a rotor, and the performance of the motor is optimized.
Furthermore, a plurality of through holes are uniformly distributed on the second punching sheet. A plurality of through holes are uniformly distributed on the second punching sheet, so that the initial unbalance amount of the rotor can be effectively reduced, and the difficulty of correcting dynamic balance can be reduced.
Furthermore, the through holes are formed in the second punching sheet along the axial direction of the second punching sheet. The through holes are formed in the second punching sheet along the axial direction of the second punching sheet, and when the rotor rotates, the magnetic parts placed in the through holes can be attached to the inner walls of the through holes due to centrifugal force and cannot be thrown out of the through holes.
Further, the mass of the magnetic component placed in the through hole is not larger than the maximum allowable unbalance amount of the single side of the through hole. The mass of the magnetic component placed in the through hole is not more than the maximum allowable unbalance amount of the single side of the through hole, and the magnetic component placed in the through hole can be ensured to have the effect of correcting the dynamic balance as good as possible.
Further, the allowable maximum unbalance amount of the single side of the through hole is m, and the mass of the magnetic component is one of m/3,2m/3 and m. When the single-side allowable maximum unbalance amount of the through hole is m, the mass of the magnetic component is preferably one of m/3,2m/3 and m, and when the mass of the magnetic component is one of m/3,2m/3 and m, the magnetic component plays the best effect of correcting balance.
Furthermore, the thickness of the second stamped sheets superposed on one end of the first stamped sheets is more than three times of the length of the magnetic component when the mass of the magnetic component is m. The thickness of the second punching sheets overlapped on one ends of the first punching sheets is more than three times of the length of the magnetic component when the mass of the magnetic component is m, and the magnetic component is favorably and completely positioned in the through hole. While the cross-section of the through-hole may be determined by the cross-section of the magnetic component placed inside.
Furthermore, the thickness of two second punching sheets located on the outermost sides of the two ends of the punching sheets in a plurality of overlapping and pressing modes is more than 2 mm. When being located a plurality of both ends of folding the both ends of pressing the piece of setting two second towards the piece in the outside when being more than 2mm, can guarantee the rotor core shaping back, the condition of fin can not appear, increases rotor core's integrality.
Further, the magnetic component is magnetic steel. The magnetic component is magnetic steel, the magnetic steel is used for replacing a dynamic balance screw to correct dynamic balance, meanwhile, the overall magnetism of the rotor can be increased, the performance of the motor is optimized, but attention needs to be paid to the fact that the magnetic poles of the magnetic component placed in the through hole are the same as the magnetism of the rotor, and the polarity of the rotor is prevented from being damaged.
The invention has the beneficial effects that: the novel motor rotor core comprises a plurality of laminated punching sheets, wherein each punching sheet comprises a plurality of first punching sheets and a plurality of second punching sheets, the plurality of first punching sheets are laminated, the plurality of second punching sheets are respectively laminated at two ends of the plurality of laminated first punching sheets, and the plurality of second punching sheets are provided with a plurality of through holes for placing magnetic parts. The punching sheets are divided into the first punching sheet and the second punching sheet, the second punching sheet is provided with a plurality of through holes for placing magnetic parts, the second punching sheet is laminated at two ends of the laminated first punching sheet to form a new rotor core, and the magnetic parts are placed in the through holes to correct dynamic balance, so that the aim of removing a rotor baffle is fulfilled, the material cost is reduced, and meanwhile, the magnetic parts replace dynamic balance screws to increase the overall magnetism of the rotor, and the performance of the motor is favorably optimized.
The second purpose of the invention is to provide a rotor which uses the novel motor rotor core, because the punching sheets are divided into a first punching sheet and a second punching sheet, a plurality of through holes for placing magnetic parts are arranged on the second punching sheet, the second punching sheet is laminated on two ends of the laminated first punching sheet to form a new rotor core, and the magnetic parts are placed in the through holes to correct dynamic balance, thereby achieving the purpose of removing a rotor baffle plate, reducing the material cost, and simultaneously replacing dynamic balance screws with the magnetic parts can increase the overall magnetism of the rotor, which is beneficial to optimizing the performance of the motor.
The third purpose of the invention is to provide a motor which avoids the defects in the prior art, the motor uses the rotor, the punching sheets are divided into a first punching sheet and a second punching sheet, a plurality of through holes for placing magnetic parts are formed in the second punching sheet, the second punching sheet is laminated on two ends of the laminated first punching sheet to form a new rotor iron core, and the magnetic parts are placed in the through holes to correct dynamic balance, so that the purpose of removing a rotor baffle is achieved, the material cost is reduced, meanwhile, the magnetic parts replace dynamic balance screws to increase the overall magnetism of the rotor, and the performance of the motor is favorably optimized.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic overall structure diagram of a novel motor rotor core according to the present invention.
Fig. 2 is a schematic structural diagram of a first punching sheet of the novel motor rotor core.
Fig. 3 is a schematic structural diagram of a second punching sheet of the novel motor rotor core of the invention.
The figure includes:
Detailed Description
The invention is further described with reference to the following examples.
Example 1
The novel motor rotor core of this embodiment, as shown in fig. 1-3, including a plurality of towards piece 1 that fold and press the setting, it includes a plurality of first towards piece 2 and a plurality of second towards piece 3 to press towards piece 1, it is a plurality of first towards piece 2 is and folds and press the setting, and it is a plurality of fold and press the setting first towards the both ends of piece 2 fold respectively and press and have a plurality of second towards piece 3, it is a plurality of through-hole 4 that is used for placing magnetic part is seted up towards piece 3 to the second. Through dividing into these two kinds of towards piece 1 first towards piece 2 and second towards piece 3, and set up a plurality of through-holes 4 that are used for placing magnetic part on second towards piece 3, thereby fold second towards piece 3 and fold and press at the both ends of folding good first towards piece 2 and form new rotor core, thereby utilize through-hole 4 inside to place magnetic part and proofread dynamic balance, thereby reach the purpose of removing rotor baffle, the material cost is reduced, magnetic part replaces dynamic balance screw simultaneously and can increase the holistic magnetism of rotor, be favorable to optimizing the performance of motor.
A plurality of through holes 4 are uniformly distributed on the second punching sheet 3. A plurality of through holes 4 are uniformly distributed on the second punching sheet 3, so that the initial unbalance amount of the rotor can be effectively reduced, and the difficulty of correcting dynamic balance can be reduced.
The through holes 4 are formed in the second punching sheet 3 along the axial direction of the second punching sheet 3. A plurality of through-holes 4 are seted up on second punching 3 along the axial of second punching 3, can be when the rotor rotates, and the magnetic part of placing in the through-hole can be because centrifugal force pastes on the inner wall of through-hole 4, and can not be thrown away in the through-hole 4.
The mass of the magnetic component placed in the through hole 4 is not more than the single-side allowable maximum unbalance amount of the through hole 4. The mass of the magnetic component placed in the through hole 4 is not more than the maximum allowable unbalance amount of the single side of the through hole 4, and the magnetic component placed in the through hole 4 can be ensured to have the effect of correcting dynamic balance as good as possible.
The single side of the through hole 4 allows the maximum allowable unbalance amount to be m, and the mass of the magnetic component is one of m/3,2m/3 and m. The mass of the magnetic component is preferably one of m/3,2m/3 and m when the single-side allowable maximum unbalance amount of the through hole 4 is m, and the magnetic component has the best effect of correcting the dynamic balance when the mass of the magnetic component is one of m/3,2m/3 and m.
The thickness of the second punching sheets 3 laminated on one ends of the first punching sheets 2 is more than three times of the length of the magnetic component when the mass of the magnetic component is m. The thickness of the second punching sheets 3 overlapped on one ends of the first punching sheets 2 is more than three times of the length of the magnetic part when the mass of the magnetic part is m, and the magnetic part is favorably and completely positioned in the through hole 4. While the cross section of the through-hole 4 may be determined by the cross section of the magnetic member placed inside, the cross sectional shapes of the through-hole 4 and the magnetic member are not limited.
The thickness of the two second punching sheets 3 located at the outermost sides of the two ends of the punching sheets 1 in a plurality of overlapping arrangement is more than 2 mm. When being located a plurality of fold and press two second towards the piece 3 of the both ends outside of the piece 1 that sets up thickness be more than 2mm, can guarantee the rotor core shaping back, the condition of fin can not appear, increases rotor core's integrality.
The magnetic component is magnetic steel. The magnetic component is magnetic steel, the magnetic steel is used for replacing a dynamic balance screw to correct dynamic balance, meanwhile, the overall magnetism of the rotor can be increased, the performance of the motor is optimized, but attention needs to be paid to the fact that the magnetic poles of the magnetic component placed in the through hole are the same as the magnetism of the rotor, and the polarity of the rotor is prevented from being damaged.
There are two kinds to this novel electric motor rotor core's shaping mode, do respectively: the first method comprises the following steps: firstly, respectively punching a plurality of first punching sheets 2 and a plurality of second punching sheets 3, then punching two thicker second punching sheets 3, then placing the plurality of second punching sheets 3 at two ends of the plurality of first punching sheets 2, then respectively placing two thicker third punching sheets 3 at the outermost sides of two ends of a rotor core, and finally laminating, riveting and molding the third punching sheets 3; and the second method comprises the following steps: firstly, a plurality of first punching sheets 2 are punched, then two thicker second punching sheets 2 are punched, then the two thicker first punching sheets are placed at two ends of the first punching sheets 2, then the first punching sheets are laminated and riveted to be formed, finally through holes 4 are formed at two ends of a formed rotor iron core, and the depth of the through holes 4 is the same as that of the first mode.
Example 2
This embodiment provides a rotor, this rotor uses embodiment 1 novel electric motor rotor core, owing to divide into first punching sheet 2 and second punching sheet 3 these two kinds through punching sheet 1, and set up a plurality of through-holes 4 that are used for placing magnetic part on second punching sheet 3, thereby form new rotor core with second punching sheet 3 pressure-superposed at the both ends of folding good first punching sheet 2 simultaneously, utilize through-hole 4 inside to place magnetic part and proofread dynamic balance, thereby reach the mesh of removing the rotor baffle, material cost has been reduced, magnetic part replaces dynamic balance screw simultaneously and can increase the holistic magnetism of rotor, be favorable to optimizing the performance of motor.
Example 3
This embodiment provides a motor, this motor uses embodiment 2 the rotor, owing to divide into these two kinds of first punching sheet 2 and second punching sheet 3 through punching sheet 1, and set up a plurality of through-holes 4 that are used for placing magnetic part on second punching sheet 3, thereby form new rotor core with second punching sheet 3 pressure-superposed at the both ends of the first punching sheet 2 that fold well simultaneously, utilize through-hole 4 inside to place magnetic part and proofread dynamic balance, thereby reach the mesh of removing the rotor baffle, material cost has been reduced, magnetic part replaces the dynamic balance screw simultaneously and can increase the holistic magnetism of rotor, be favorable to optimizing the performance of motor.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a novel electric motor rotor core, includes a plurality of lamination sheets that press the setting, its characterized in that: the punching sheet comprises a plurality of first punching sheets and a plurality of second punching sheets, the first punching sheets are overlapped and arranged, the two ends of the first punching sheets are overlapped and arranged in a plurality of overlapping and arranging manner, the second punching sheets are arranged in a plurality of overlapping and arranging manner, a plurality of rotor reluctance grooves used for generating reluctance torque and a plurality of through holes used for placing magnetic components are formed in the second punching sheets, the magnetic components are magnetic steel, the through holes are located between the rotor reluctance grooves and a motor air gap, and the magnetic components are used for adjusting dynamic balance of a rotor and increasing the overall magnetic performance of the rotor.
2. The novel rotor core of an electric machine as claimed in claim 1, wherein: and the through holes are uniformly distributed on the second punching sheet.
3. The novel rotor core of an electric machine as claimed in claim 1, wherein: the through holes are formed in the second punching sheet along the axial direction of the second punching sheet.
4. A novel rotor core for an electrical machine according to claim 3, wherein: the mass of the magnetic component placed in the through hole is not more than the maximum allowable unbalance amount of the single side of the through hole.
5. The novel rotor core of an electric machine according to claim 4, wherein: the single side of the through hole allows the maximum allowable unbalance amount to be m, and the mass of the magnetic component is one of m/3,2m/3 and m.
6. The novel rotor core of an electric machine according to claim 5, wherein: the thickness of the second punching sheets which are overlapped on one ends of the first punching sheets is more than three times of the length of the magnetic part when the mass of the magnetic part is m.
7. The novel rotor core of an electric machine as claimed in claim 1, wherein: the thickness of two of the two outermost sides of the two ends of the stamped steel which are positioned in a plurality of overlapping arrangement is more than 2 mm.
8. The novel rotor core of an electric machine as claimed in claim 1, wherein: the magnetic component is magnetic steel.
9. A rotor, characterized by: comprising the novel rotor core for an electrical machine according to any one of claims 1 to 8.
10. An electric machine characterized by: comprising the rotor of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244156.3A CN110994824B (en) | 2019-12-06 | 2019-12-06 | Novel motor rotor iron core, rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244156.3A CN110994824B (en) | 2019-12-06 | 2019-12-06 | Novel motor rotor iron core, rotor and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110994824A CN110994824A (en) | 2020-04-10 |
| CN110994824B true CN110994824B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911244156.3A Active CN110994824B (en) | 2019-12-06 | 2019-12-06 | Novel motor rotor iron core, rotor and motor |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU4584099A (en) * | 1998-06-26 | 2000-01-17 | General Electric Company | Rotors utilizing a stepped skew |
| JP5259934B2 (en) * | 2006-07-20 | 2013-08-07 | 株式会社日立産機システム | Permanent magnet type rotating electric machine and compressor using the same |
| CN106981939A (en) * | 2017-05-16 | 2017-07-25 | 雷勃电气（苏州）有限公司 | Permanent-magnetic synchronous motor rotor, motor, refrigeration compressor and motor production method |
| CN110266130B (en) * | 2019-07-02 | 2020-09-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor, motor, compressor |
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| CN110994824A (en) | 2020-04-10 |
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