CN112910199A - Method for producing double-radial combined type magnetic pole permanent magnet driving motor rotor - Google Patents
Method for producing double-radial combined type magnetic pole permanent magnet driving motor rotor Download PDFInfo
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- CN112910199A CN112910199A CN202110278757.7A CN202110278757A CN112910199A CN 112910199 A CN112910199 A CN 112910199A CN 202110278757 A CN202110278757 A CN 202110278757A CN 112910199 A CN112910199 A CN 112910199A
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- permanent magnet
- rectangular groove
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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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Abstract
The invention provides a method for producing a double-radial combined magnetic pole permanent magnet driving motor rotor, which belongs to the technical field of electric vehicle motor electric appliances.
Description
Technical Field
The invention provides a method for producing a double-radial combined type magnetic pole permanent magnet driving motor rotor, and belongs to the technical field of electric automobile motor appliances.
Background
The surface-mounted permanent magnet driving motor adopted by the current electric automobile has the problems of poor reliability, large torque pulsation, easy demagnetization of permanent magnet steel under the action of armature reaction and the like, such as the prior art and the patent name: a high-speed permanent magnet motor rotor and a processing method thereof are disclosed in the patent numbers: ZL201810945533.5 discloses following technical scheme, rotor core outward appearance subsides tile shape permanent magnet steel, and the left and right both sides of tile shape permanent magnet steel adopt the magnetic isolation clamp plate interval, and the outside adopts the fiber sheath parcel, and tile shape permanent magnet steel axial both ends are fixed by rotor clamping ring portion, and fiber sheath and rotor clamping ring portion can improve the structural strength of surface mounted permanent magnet rotor, but the fiber sheath has increased main air gap length, has weakened main air gap magnetic field, and the torque ripple of surface mounted permanent magnet driving motor is big simultaneously, the easy demagnetization scheduling problem of permanent magnet steel remains to be researched and developed more advanced product.
Disclosure of Invention
The invention aims to provide a method for producing a double-radial combined type magnetic pole permanent magnet driving motor rotor which can overcome the defects and is formed by combining built-in radial permanent magnet steel and radial permanent magnet steel fixed by a pole shoe, wherein a magnetic circuit of the built-in radial permanent magnet steel is divided into two paths by utilizing the radial permanent magnet steel fixed by the pole shoe, so that the low torque pulsation, the high reliability and the high power density of the magnetic pole center static magnetic force are reduced, and the technical content is as follows:
the production method of the double-radial combined type magnetic pole permanent magnet driving motor rotor is characterized by comprising the following steps: punching and shearing a circular rotor punching sheet, wherein an even number of rectangular grooves which are close to the excircle of the rotor punching sheet and penetrate through the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, the central lines in the width direction of the rectangular grooves all penetrate through the circle center of the excircle of the rotor punching sheet, the outer edges of the rectangular grooves are not communicated with the excircle of the rotor punching sheet, the left end of each rectangular groove is provided with a right-angled trapezoidal magnetic isolation air gap penetrating through the thickness of the rotor punching sheet, the left side of each rectangular groove is communicated with the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the central line in the length direction of each rectangular groove is communicated with the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the width of each rectangular groove is 0.6mm larger than the length of the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the right end of each rectangular groove is provided with the right-angled side of, the width of each rectangular groove is 0.6mm greater than the length of the waist of the right-angle side of the right-end right-angled trapezoid magnetic isolation air gap, two adjacent right-angled trapezoid magnetic isolation air gaps are not communicated, the length of the disconnected part is 1.5mm, a rectangular groove penetrating through the thickness of the rotor punching sheet is arranged in the middle of the outer end of each rectangular groove on the rotor punching sheet, the outer edge of each rectangular groove is communicated with the excircle of the rotor punching sheet, the length of each rectangular groove is greater than the length of a pole shoe and greater than the length of second rectangular permanent magnet steel, the width of each rectangular groove is equal to the sum of the thickness of the pole shoe and the thickness of the second rectangular permanent magnet steel, a square groove penetrating through the thickness of the rotor punching sheet is arranged right below each rectangular groove, each rectangular groove is not communicated with each square groove, the size of;
laminating the rotor punching sheets in a mode that the burr direction faces to the same direction, riveting the laminated rotor punching sheets through a square iron rivet to form a rotor core, drilling a screw hole in the center of the inner end face of a rectangular groove of the rotor core, processing a screw hole penetrating through the square iron rivet in the center of the square iron rivet, enabling the center line of the screw hole and the center line of the screw hole of the square iron rivet to be on the same straight line, placing a first rectangular permanent magnet steel in the rectangular groove, arranging the outer side of the first rectangular permanent magnet steel as an N pole, fixing a pole shoe and a second rectangular permanent magnet steel in the rectangular groove in the middle of the outer end of the rectangular groove through a screw, arranging the other identical first rectangular permanent magnet steel in another adjacent rectangular groove, arranging the outer side of the other first rectangular permanent magnet steel as an S pole, fixing the pole shoe and the other second rectangular permanent magnet steel in the rectangular groove in the middle of the other rectangular groove through the screw, and the polarity of the outer side of the other second rectangular permanent magnet steel is S pole, and so on, to form the biradial combined type magnetic pole permanent magnet rotor with N poles and S poles arranged at intervals.
Compared with the prior art, the second rectangular permanent magnet steel in the driving motor rotor divides the magnetic path of the first rectangular permanent magnet steel into a left path and a right path, so that the problems of uneven magnetic field distribution and driving motor pulsation caused by large static magnetic force of the center of the magnetic pole due to the fact that the magnetic field of the first rectangular permanent magnet steel is concentrated in the center of the magnetic pole are solved, meanwhile, the first rectangular permanent magnet steel and the second rectangular permanent magnet steel jointly provide magnetic flux of each pole, the magnetic gathering effect of the permanent magnet rotor is obvious, the power density is high, pole shoes are attached to the outer side of the second rectangular permanent magnet steel instead of a plane air gap, and the problem of permanent magnet steel demagnetization caused by the armature reaction magnetic field under a high-.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
the production method of the double-radial combined type magnetic pole permanent magnet driving motor rotor is characterized by comprising the following steps: punching and shearing a circular rotor punching sheet, wherein an even number of rectangular grooves which are close to the excircle of the rotor punching sheet and penetrate through the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, the central lines in the width direction of the rectangular grooves all penetrate through the circle center of the excircle of the rotor punching sheet, the outer edges of the rectangular grooves are not communicated with the excircle of the rotor punching sheet, the left end of each rectangular groove is provided with a right-angled trapezoidal magnetic isolation air gap penetrating through the thickness of the rotor punching sheet, the left side of each rectangular groove is communicated with the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the central line in the length direction of each rectangular groove is communicated with the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the width of each rectangular groove is 0.6mm larger than the length of the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the right end of each rectangular groove is provided with the right-angled side of, the width of each rectangular groove is 0.6mm greater than the length of the waist of the right-angle side of the right-end right-angled trapezoid magnetic isolation air gap, two adjacent right-angled trapezoid magnetic isolation air gaps are not communicated, the length of the disconnected part is 1.5mm, a rectangular groove penetrating through the thickness of the rotor punching sheet is arranged in the middle of the outer end of each rectangular groove on the rotor punching sheet, the outer edge of each rectangular groove is communicated with the excircle of the rotor punching sheet, the length of each rectangular groove is greater than the length of a pole shoe and greater than the length of second rectangular permanent magnet steel, the width of each rectangular groove is equal to the sum of the thickness of the pole shoe and the thickness of the second rectangular permanent magnet steel, a square groove penetrating through the thickness of the rotor punching sheet is arranged right below each rectangular groove, each rectangular groove is not communicated with each square groove, the size of;
laminating the rotor punching sheets in a mode that the burr direction faces to the same direction, riveting the laminated rotor punching sheets through a square iron rivet to form a rotor core, drilling a screw hole in the center of the inner end face of a rectangular groove of the rotor core, processing a screw hole penetrating through the square iron rivet in the center of the square iron rivet, enabling the center line of the screw hole and the center line of the screw hole of the square iron rivet to be on the same straight line, placing a first rectangular permanent magnet steel in the rectangular groove, arranging the outer side of the first rectangular permanent magnet steel as an N pole, fixing a pole shoe and a second rectangular permanent magnet steel in the rectangular groove in the middle of the outer end of the rectangular groove through a screw, arranging the other identical first rectangular permanent magnet steel in another adjacent rectangular groove, arranging the outer side of the other first rectangular permanent magnet steel as an S pole, fixing the pole shoe and the other second rectangular permanent magnet steel in the rectangular groove in the middle of the other rectangular groove through the screw, and the polarity of the outer side of the other second rectangular permanent magnet steel is S pole, and so on, to form the biradial combined type magnetic pole permanent magnet rotor with N poles and S poles arranged at intervals.
Claims (1)
1. A method for producing a double-radial combined type magnetic pole permanent magnet driving motor rotor is characterized by comprising the following steps: punching and shearing a circular rotor punching sheet, wherein an even number of rectangular grooves which are close to the excircle of the rotor punching sheet and penetrate through the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, the central lines in the width direction of the rectangular grooves all penetrate through the circle center of the excircle of the rotor punching sheet, the outer edges of the rectangular grooves are not communicated with the excircle of the rotor punching sheet, the left end of each rectangular groove is provided with a right-angled trapezoidal magnetic isolation air gap penetrating through the thickness of the rotor punching sheet, the left side of each rectangular groove is communicated with the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the central line in the length direction of each rectangular groove is communicated with the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the width of each rectangular groove is 0.6mm larger than the length of the waist of the right-angled side of the left-end right-angled trapezoidal magnetic isolation air gap, the right end of each rectangular groove is provided with the right-angled side of, the width of each rectangular groove is 0.6mm greater than the length of the waist of the right-angle side of the right-end right-angled trapezoid magnetic isolation air gap, two adjacent right-angled trapezoid magnetic isolation air gaps are not communicated, the length of the disconnected part is 1.5mm, a rectangular groove penetrating through the thickness of the rotor punching sheet is arranged in the middle of the outer end of each rectangular groove on the rotor punching sheet, the outer edge of each rectangular groove is communicated with the excircle of the rotor punching sheet, the length of each rectangular groove is greater than the length of a pole shoe and greater than the length of second rectangular permanent magnet steel, the width of each rectangular groove is equal to the sum of the thickness of the pole shoe and the thickness of the second rectangular permanent magnet steel, a square groove penetrating through the thickness of the rotor punching sheet is arranged right below each rectangular groove, each rectangular groove is not communicated with each square groove, the size of;
laminating the rotor punching sheets in a mode that the burr direction faces to the same direction, riveting the laminated rotor punching sheets through a square iron rivet to form a rotor core, drilling a screw hole in the center of the inner end face of a rectangular groove of the rotor core, processing a screw hole penetrating through the square iron rivet in the center of the square iron rivet, enabling the center line of the screw hole and the center line of the screw hole of the square iron rivet to be on the same straight line, placing a first rectangular permanent magnet steel in the rectangular groove, arranging the outer side of the first rectangular permanent magnet steel as an N pole, fixing a pole shoe and a second rectangular permanent magnet steel in the rectangular groove in the middle of the outer end of the rectangular groove through a screw, arranging the other identical first rectangular permanent magnet steel in another adjacent rectangular groove, arranging the outer side of the other first rectangular permanent magnet steel as an S pole, fixing the pole shoe and the other second rectangular permanent magnet steel in the rectangular groove in the middle of the other rectangular groove through the screw, and the polarity of the outer side of the other second rectangular permanent magnet steel is S pole, and so on, to form the biradial combined type magnetic pole permanent magnet rotor with N poles and S poles arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110278757.7A CN112910199A (en) | 2021-03-16 | 2021-03-16 | Method for producing double-radial combined type magnetic pole permanent magnet driving motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110278757.7A CN112910199A (en) | 2021-03-16 | 2021-03-16 | Method for producing double-radial combined type magnetic pole permanent magnet driving motor rotor |
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| Publication Number | Publication Date |
|---|---|
| CN112910199A true CN112910199A (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110278757.7A Withdrawn CN112910199A (en) | 2021-03-16 | 2021-03-16 | Method for producing double-radial combined type magnetic pole permanent magnet driving motor rotor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004350345A (en) * | 2003-05-20 | 2004-12-09 | Matsushita Electric Ind Co Ltd | Permanent magnetic motor |
| CN101060258A (en) * | 2006-12-19 | 2007-10-24 | 兰州理工大学 | A transverse flux permanent magnet wind generator |
| US20080030092A1 (en) * | 2004-05-12 | 2008-02-07 | Oscar Rolando Avila Cusicanqui | Hybrid Electric Reluctance Motor |
| CN211744169U (en) * | 2020-04-30 | 2020-10-23 | 潍坊市电机一厂有限公司 | Combined magnetic pole neodymium iron boron permanent magnet driving motor |
-
2021
- 2021-03-16 CN CN202110278757.7A patent/CN112910199A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004350345A (en) * | 2003-05-20 | 2004-12-09 | Matsushita Electric Ind Co Ltd | Permanent magnetic motor |
| US20080030092A1 (en) * | 2004-05-12 | 2008-02-07 | Oscar Rolando Avila Cusicanqui | Hybrid Electric Reluctance Motor |
| CN101060258A (en) * | 2006-12-19 | 2007-10-24 | 兰州理工大学 | A transverse flux permanent magnet wind generator |
| CN211744169U (en) * | 2020-04-30 | 2020-10-23 | 潍坊市电机一厂有限公司 | Combined magnetic pole neodymium iron boron permanent magnet driving motor |
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Application publication date: 20210604 |
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