CN112072872A - Production method of tangential and radial permanent magnet combined type magnetic pole driving motor rotor - Google Patents
Production method of tangential and radial permanent magnet combined type magnetic pole driving motor rotor Download PDFInfo
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- CN112072872A CN112072872A CN202010982658.2A CN202010982658A CN112072872A CN 112072872 A CN112072872 A CN 112072872A CN 202010982658 A CN202010982658 A CN 202010982658A CN 112072872 A CN112072872 A CN 112072872A
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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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- 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
- H02K1/27—Rotor cores with permanent magnets
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- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a production method of a tangential and radial permanent magnet combined type magnetic pole driving motor rotor, which belongs to the technical field of automobile motor electric appliances. The magnetic shield sleeve is cast with aluminum materials, so that the weight of the motor can be reduced, the problem of low utilization rate of permanent magnet steel is avoided, the structure is simple, the utilization rate of the permanent magnet steel is high, and the output performance of the motor is good.
Description
Technical Field
The invention provides a production method of a tangential and radial permanent magnet combined type magnetic pole driving motor rotor, and belongs to the technical field of automobile motor electric appliances.
Background
The production method of the permanent magnet driving motor rotor adopted on the existing electric automobile mostly adopts a permanent magnet external embedded structure, such as the prior art, the patent name is as follows: brushless dc motor rotor, patent No.: ZL200920116549.1 discloses a following technical scheme, including rotor core, pivot and permanent magnet, rotor core is become an organic whole by the lamination stack, and pivot and rotor core fixed connection, rotor core's surface evenly distributed has an even number T shape voussoir, constitutes the slot between the adjacent T shape voussoir, and the permanent magnet is inlayed in the slot correspondingly, and the permanent magnet of this structure rotor directly faces the air gap, under the armature reaction effect of impulse current, probably produces irreversible demagnetization, and in case the permanent magnet forms irreversible demagnetization, the drive motor efficiency reduces, power, moment of torsion decline rapidly, and its performance is waited for further improvement.
Disclosure of Invention
The invention aims to overcome the defects and provide a mixed magnetic circuit type permanent magnet rotor structure, wherein an air gap magnetic field in the structure is a mixed magnetic field consisting of a radial magnetic field and a tangential magnetic field, and the structure has the characteristics of strong magnetism gathering capacity and weakening counter potential harmonic waves and torque fluctuation. The magnetic shield sleeve is cast with aluminum materials, so that the weight of the motor can be reduced, the problem of low utilization rate of permanent magnet steel is avoided, the structure is simple, the utilization rate of the permanent magnet steel is high, and the output performance of the motor is good.
The technical problems solved by the invention are as follows: a production method of a tangential and radial permanent magnet combined type magnetic pole driving motor rotor is provided, a circular rotor punching sheet is punched and cut, an even number of radial rectangular grooves penetrating the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, circular arc-shaped magnetism isolating grooves penetrating the thickness of the rotor punching sheet are arranged at the outer ends of the radial rectangular grooves, the chord length of the circular arc-shaped magnetism isolating grooves is equal to the width of the radial rectangular grooves, the arch height of the circular arc-shaped magnetism isolating grooves is 1mm, a non-communicating part with the size of 1.5mm is arranged between the outer sides of the circular arc-shaped magnetism isolating grooves and the excircle of the rotor punching sheet, cross-shaped grooves penetrating the thickness of the rotor punching sheet are arranged at the inner ends of the radial rectangular grooves, the outer ends of the cross-shaped grooves are communicated with the inner ends of the radial rectangular grooves, the length of the outer ends of the cross-shaped grooves is smaller than the width of the radial rectangular grooves, the centers of cross-shaped grooves corresponding to the radial rectangular grooves are on the same circumference, the inner ends of the cross-shaped grooves are communicated with the inner circle of the circular rotor punching sheet, a rectangular tangential groove penetrating through the thickness of the rotor punching sheet is arranged between the centers of the outer circles of two adjacent radial rectangular grooves, the minimum distance between the left end and the right end of each rectangular tangential groove and the outer end of each radial rectangular groove is 1.5mm, the outer end of each rectangular tangential groove is communicated with the outer circle of the rotor punching sheet, three rivet round holes penetrating through the thickness of the rotor punching sheet are uniformly distributed on the inner side of each rectangular tangential groove, the centers of the three rivet round holes are on the same circumference, and the size of the outer end of each rivet round hole from the midpoint of the inner edge of;
laminating the rotor punching sheets in a mode that the burr direction faces one direction, riveting by using iron rivets to form a rotor core, placing the rotor core in a die-casting die of a die-casting machine, pouring molten aluminum into a material inlet of the die-casting machine provided with the die-casting die, die-casting a magnetism-isolating sleeve of the rotor, wherein the middle of the magnetism-isolating sleeve is provided with a through hole, the magnetism-isolating sleeve parts at two sides of the rotor core are of boss structures, the thickness of each boss is 2mm, and the diameter of the excircle of each boss is 4mm larger than the diameter of an inner hole of the annular;
first tile magnetic steel, second tile magnetic steel and third tile magnetic steel are arranged in each rectangular tangential groove from the left side to the right side in the anticlockwise direction, a first pole shoe, a second pole shoe and a third pole shoe are arranged on the outer sides of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel, and rectangular permanent magnetic steel is arranged in each radial rectangular groove.
The polar arc of the second tile magnetic steel accounts for 1/3-2/3 of the polar arc of each magnetic pole, the polar arcs of the first tile magnetic steel and the third tile magnetic steel account for 1/6-1/3 of the polar arc of each magnetic pole, and the polar arcs of the first pole shoe, the second pole shoe and the third pole shoe are equal to the polar arcs of the first tile magnetic steel and the third tile magnetic steel.
The height of the rectangular tangential groove is equal to the sum of the thicknesses of the first tile permanent magnet steel and the first pole shoe, the thicknesses of the first pole shoe, the second pole shoe and the third pole shoe are equal, and the thicknesses of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel are equal.
The distances between the first tile magnetic steel and the second tile magnetic steel and between the second tile magnetic steel and the third tile magnetic steel are all 1.5 mm.
The outer sides of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel are respectively covered with a first pole shoe, a second pole shoe and a third pole shoe, and then the first pole shoe, the second pole shoe and the third pole shoe are fixed on the iron rivet through screws, and the rotor core is fixed on the shaft through a magnetism isolating sleeve.
The N pole and the N pole of each rectangular permanent magnet steel are opposite, the S pole and the S pole of each rectangular permanent magnet steel are opposite, and the polarity of the outer side surfaces of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel is the same as that of the outer sides of the two adjacent rectangular permanent magnet steels.
Compared with the prior art, the structure is a mixed magnetic circuit type permanent magnet rotor structure, the air gap magnetic field is a mixed magnetic field consisting of a radial magnetic field and a tangential magnetic field, and the permanent magnet rotor structure has the characteristics of strong magnetism gathering capacity and weakening counter potential harmonic waves and torque fluctuation. The magnetic shield sleeve is cast with aluminum materials, so that the weight of the motor can be reduced, the problem of low utilization rate of permanent magnet steel is avoided, the structure is simple, the utilization rate of the permanent magnet steel is high, and the output performance of the motor is good.
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:
as shown in figure 1, the production flow of the tangential and radial permanent magnet combined type magnetic pole driving motor rotor is characterized in that a circular rotor punching sheet is punched and cut, an even number of radial rectangular grooves penetrating through the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, arc-shaped magnetism isolating grooves penetrating through the thickness of the rotor punching sheet are arranged at the outer ends of the radial rectangular grooves, the chord length of each arc-shaped magnetism isolating groove is equal to the width of the radial rectangular groove, the arch height of each arc-shaped magnetism isolating groove is 1mm, a non-communicating part with the outer side of each arc-shaped magnetism isolating groove and the excircle of the rotor punching sheet in a size of 1.5mm is arranged at the inner end of each radial rectangular groove, a cross-shaped groove penetrating through the thickness of the rotor punching sheet is arranged at the inner end of each cross-shaped groove, the outer end of each cross-shaped groove is communicated with the inner end of the corresponding radial rectangular groove, the length of the outer end of each, the centers of cross-shaped grooves corresponding to the radial rectangular grooves are on the same circumference, the inner ends of the cross-shaped grooves are communicated with the inner circle of the circular rotor punching sheet, a rectangular tangential groove penetrating through the thickness of the rotor punching sheet is arranged between the centers of the outer circles of two adjacent radial rectangular grooves, the distance between the left end and the right end of each rectangular tangential groove and the outer end of each radial rectangular groove is 1.5mm, the outer end of each rectangular tangential groove is communicated with the outer circle of the rotor punching sheet, three rivet round holes penetrating through the thickness of the rotor punching sheet are uniformly distributed on the inner side of each rectangular tangential groove, the centers of the three rivet round holes are on the same circumference, and the size of the outer end of each rivet round hole from the midpoint of the inner edges;
laminating the rotor punching sheets in a mode that the burr direction faces one direction, riveting by using iron rivets to form a rotor core, placing the rotor core in a die-casting die of a die-casting machine, pouring molten aluminum into a material inlet of the die-casting machine provided with the die-casting die, die-casting a magnetism-isolating sleeve of the rotor, wherein the middle of the magnetism-isolating sleeve is provided with a through hole, the magnetism-isolating sleeve parts at two sides of the rotor core are of boss structures, the thickness of each boss is 2mm, and the diameter of the excircle of each boss is 4mm larger than the diameter of an inner hole of the annular;
the rectangular permanent magnet steels are sequentially arranged in a radial rectangular groove of a rotor core in a mode that N poles of two adjacent rectangular permanent magnet steels are opposite to N poles and S poles of the two adjacent rectangular permanent magnet steels are opposite to S poles, then a first tile magnetic steel, a second tile magnetic steel and a third tile magnetic steel which are the same in thickness in the magnetizing direction are placed in a rectangular tangential groove in a mode that the polarity of the outer side surface is the same as the polarity of the outer sides of the two adjacent rectangular permanent magnet steels, the pole arc of the second tile magnetic steel accounts for 1/3-2/3 of the pole arc of each magnetic pole, the pole arc of the first tile magnetic steel and the pole arc of the third tile magnetic steel account for 1/6-1/3 of the pole arc of each magnetic pole, the pole arc of the first pole shoe, the second pole shoe and the third pole shoe is equal to the pole arc of the first tile magnetic steel and the third tile magnetic steel, and the distance between the first tile magnetic steel, the second tile magnetic steel and the third tile, the outer sides of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel are provided with a first pole shoe, a second pole shoe and a third pole shoe which are the same in thickness.
The height of the rectangular tangential groove is the sum of the thicknesses of the first tile permanent magnet steel and the first pole shoe.
The outer sides of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel are respectively covered with a first pole shoe, a second pole shoe and a third pole shoe, and then the first pole shoe, the second pole shoe and the third pole shoe are fixed on the iron rivet through screws, and the rotor core is fixed on the shaft through a magnetism isolating sleeve.
Claims (6)
1. A production method of a tangential and radial permanent magnet combined type magnetic pole driving motor rotor is characterized by comprising the following steps: punching and shearing a circular rotor punching sheet, wherein an even number of radial rectangular grooves penetrating through the thickness of the rotor punching sheet are uniformly distributed on the rotor punching sheet, the outer end of each radial rectangular groove is provided with a circular arc-shaped magnetism isolating groove penetrating through the thickness of the rotor punching sheet, the chord length of each circular arc-shaped magnetism isolating groove is equal to the width of the corresponding radial rectangular groove, the arch height of each circular arc-shaped magnetism isolating groove is 1mm, a non-communicating part with the size of 1.5mm is arranged between the outer side of each circular arc-shaped magnetism isolating groove and the excircle of the rotor punching sheet, the inner end of each radial rectangular groove is provided with a cross-shaped groove penetrating through the thickness of the rotor punching sheet, the outer end of each cross-shaped groove is communicated with the inner end of the corresponding radial rectangular groove, the length of the outer end of the cross-shaped groove is less than the width of the corresponding radial rectangular groove, the length of the middle part of the cross-shaped groove is greater than the, the inner end of the cross-shaped groove is communicated with the inner circle of the circular rotor punching sheet, a rectangular tangential groove penetrating through the thickness of the rotor punching sheet is arranged between the outer circles of two adjacent radial rectangular grooves, the minimum distance between the left end and the right end of the rectangular tangential groove and the outer end of the radial rectangular groove is 1.5mm, the outer end of the rectangular tangential groove is communicated with the outer circle of the rotor punching sheet, three rivet round holes penetrating through the thickness of the rotor punching sheet are uniformly distributed on the inner side of each rectangular tangential groove, the centers of the three rivet round holes are on the same circumference, and the size of the outer end of each rivet round hole to the midpoint of the inner edge of each rectangular tangential groove is;
laminating the rotor punching sheets in a mode that the burr direction faces one direction, riveting by using iron rivets to form a rotor core, placing the rotor core in a die-casting die of a die-casting machine, pouring molten aluminum into a material inlet of the die-casting machine provided with the die-casting die, die-casting a magnetism-isolating sleeve of the rotor, wherein the middle of the magnetism-isolating sleeve is provided with a through hole, the magnetism-isolating sleeve parts at two sides of the rotor core are of boss structures, the thickness of each boss is 2mm, and the diameter of the excircle of each boss is 4mm larger than the diameter of an inner hole of the annular;
first tile magnetic steel, second tile magnetic steel and third tile magnetic steel are arranged in each rectangular tangential groove from the left side to the right side in the anticlockwise direction, a first pole shoe, a second pole shoe and a third pole shoe are arranged on the outer sides of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel, and rectangular permanent magnetic steel is arranged in each radial rectangular groove.
2. The production method of the rotor of the tangential and radial permanent magnet combined type magnetic pole driving motor according to claim 1, is characterized in that: the polar arc of the second tile magnetic steel accounts for 1/3-2/3 of the polar arc of each magnetic pole, the polar arcs of the first tile magnetic steel and the third tile magnetic steel account for 1/6-1/3 of the polar arc of each magnetic pole, and the polar arcs of the first pole shoe, the second pole shoe and the third pole shoe are equal to the polar arcs of the first tile magnetic steel and the third tile magnetic steel.
3. The production method of the rotor of the tangential and radial permanent magnet combined type magnetic pole driving motor according to claim 1, is characterized in that: the height of the rectangular tangential groove is equal to the sum of the thicknesses of the first tile permanent magnet steel and the first pole shoe, the thicknesses of the first pole shoe, the second pole shoe and the third pole shoe are equal, and the thicknesses of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel are equal.
4. The production method of the rotor of the tangential and radial permanent magnet combined type magnetic pole driving motor according to claim 1, is characterized in that: the distances between the first tile magnetic steel and the second tile magnetic steel and between the second tile magnetic steel and the third tile magnetic steel are all 1.5 mm.
5. The production method of the rotor of the tangential and radial permanent magnet combined type magnetic pole driving motor according to claim 1, is characterized in that: the outer sides of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel are respectively covered with a first pole shoe, a second pole shoe and a third pole shoe, and then the first pole shoe, the second pole shoe and the third pole shoe are fixed on the iron rivet through screws, and the rotor core is fixed on the shaft through a magnetism isolating sleeve.
6. The production method of the rotor of the tangential and radial permanent magnet combined type magnetic pole driving motor according to claim 1, is characterized in that: the N pole and the N pole of each rectangular permanent magnet steel are opposite, the S pole and the S pole of each rectangular permanent magnet steel are opposite, and the polarity of the outer side surfaces of the first tile magnetic steel, the second tile magnetic steel and the third tile magnetic steel is the same as that of the outer sides of the two adjacent rectangular permanent magnet steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010982658.2A CN112072872A (en) | 2020-09-17 | 2020-09-17 | Production method of tangential and radial permanent magnet combined type magnetic pole driving motor rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010982658.2A CN112072872A (en) | 2020-09-17 | 2020-09-17 | Production method of tangential and radial permanent magnet combined type magnetic pole driving motor rotor |
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| CN112072872A true CN112072872A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010982658.2A Withdrawn CN112072872A (en) | 2020-09-17 | 2020-09-17 | Production method of tangential and radial permanent magnet combined type magnetic pole driving motor rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821619A (en) * | 2021-03-16 | 2021-05-18 | 山东理工大学 | Combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
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2020
- 2020-09-17 CN CN202010982658.2A patent/CN112072872A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112821619A (en) * | 2021-03-16 | 2021-05-18 | 山东理工大学 | Combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
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Application publication date: 20201211 |