CN110365146A - The assembly method of motor rotor, motor and motor rotor - Google Patents
The assembly method of motor rotor, motor and motor rotor Download PDFInfo
- Publication number
- CN110365146A CN110365146A CN201810253405.4A CN201810253405A CN110365146A CN 110365146 A CN110365146 A CN 110365146A CN 201810253405 A CN201810253405 A CN 201810253405A CN 110365146 A CN110365146 A CN 110365146A
- Authority
- CN
- China
- Prior art keywords
- shaft
- rotor core
- groove
- rotor
- mounting hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000011162 core material Substances 0.000 claims description 207
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 238000007373 indentation Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 7
- 230000005389 magnetism Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 9
- 238000007731 hot pressing Methods 0.000 description 9
- 238000009434 installation Methods 0.000 description 7
- 230000000295 complement effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 230000008450 motivation Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The present invention relates to electrical equipment technical field more particularly to the assembly method of motor rotor, motor and motor rotor, to improve the operating reliability and the torque that can bear of shaft of motor.The motor rotor includes shaft and the rotor core for being sheathed on shaft, rotor core is fixed with multiple circumferentially distributed permanent magnets, it is characterized in that, rotor core includes the mounting hole for being arranged shaft, the inner wall of mounting hole has the groove axially extended, the diameter of shaft is greater than the aperture of mounting hole, and the depth of groove is greater than the difference between the diameter of shaft and the aperture of mounting hole.
Description
Technical field
The present invention relates to electrical equipment technical field more particularly to the dresses of motor rotor, motor and motor rotor
Method of completing the square.
Background technique
Since the power bracket that motor is capable of providing is very big, with economic development and the raising of productivity, answer
Various aspects in modern society's life.Motor is a kind of equipment for converting electrical current into mechanical energy.It is using fixed
Sub- winding, which generates rotating excitation field and acts on rotor, forms electro-magnetic motor force rotation torque.
In general, said stator winding is hot-wire coil, above-mentioned rotor includes shaft and the rotor battery core for being sheathed on shaft, is turned
Multiple permanent magnets are fixed on sub- iron core.In electric motor operation, stator applies electromagnetic field in rotor exterior, and above-mentioned electromagnetic field is logical
Cross and rotor core on repulsion between the magnetic field that generates of fixed permanent magnet or sucking action, drive rotor core rotation, from
And shaft is driven to rotate, kinetic energy is converted electrical energy into, then export kinetic energy to external mechanical by shaft.Therefore, it is necessary to make to turn
Sub- iron core is fixed with rotor axis mechanical, and in order to improve the reliability being mechanically fixed between shaft and rotor core, improving shaft can
The torque of receiving, it is necessary to improve the fixing intensity between shaft and rotor core.
Summary of the invention
The present invention provides the assembly method of motor rotor, motor and motor rotor, shaft and rotor core
Between fixing intensity be improved, to improve the operating reliability of motor and torque that shaft can be born.
For this purpose, embodiment of the present invention provides a kind of motor rotor, which includes: shaft and is sheathed on
The rotor core of the shaft, the rotor core are fixed with multiple circumferentially distributed permanent magnets, and the rotor core includes
It is arranged the mounting hole of the shaft, the inner wall of the mounting hole has the groove axially extended, before being arranged, the shaft
Diameter be greater than the aperture of the mounting hole, the depth of the groove is greater than the diameter of the shaft and the aperture of the mounting hole
Between difference.
In the technical solution, elastic conjunction is may be implemented in shaft and rotor core；With the magnitude of interference of shaft and mounting hole
Increase, the groove of inner wall of the hole installing can also improve the frictional force between mounting hole and shaft, improve mounting hole and shaft it
Between tangential force increase energy between mounting hole and shaft to further increase the fixing intensity between shaft and rotor core
The torque enough transmitted.
In one preferred technical solution, the shaft and the rotor core after being arranged, the shaft with it is described
The opposite region of groove is formed with the convex stupefied structure protruded into the groove.
In the embodiment, not only increase the magnitude of interference of shaft and mounting hole, the convex stupefied structure in shaft and groove it
Between can be clamped in the circumferential, the ability for transmitting tangential force is further reinforced, and shaft and rotor core are further improved
Between fixing intensity, increase the torque that the shaft of motor can be born.
Specifically, the hot pressing secure fit stress between the shaft and the rotor core is less than the rotating shaft material
Yield strength, and it is less than the yield strength of the rotor core material.Hot pressing secure fit stress not will lead to shaft and rotor
There is breakage in the material of iron core, so as to guarantee the fixing intensity between shaft and rotor core, effectively transmits torque.
In a wherein technical solution, the groove includes the multiple grooves circumferentially distributed along the inner wall of mounting hole.By
This can further improve the fixing intensity between shaft and rotor core.
In one of technical solution, the permanent magnet is arranged in the opposite mode of the pole orientation of adjacent permanent magnet, institute
It is opposite one by one that the quantity and position for stating multiple grooves are arranged to one group of permanent magnet identical with wherein pole orientation.Groove can be with
Play the role of label, for distinguishing two groups of opposite permanent magnets of pole orientation, when installing or replacing permanent magnet, operator
Member can directly judge the pole orientation of permanent magnet according to the position of groove, without carrying out additional detection work, improve
Working efficiency.
In a preferred technical solution, along circumferential direction, the center of the groove and the permanent magnetism opposite with the groove
The centre deviation set angle of body；The motor rotor includes at least two rotor cores, from the shaft end of the shaft,
The assembly direction of two neighboring rotor core is opposite and groove is connected to.
In the program, the permanent magnet of two rotor cores is staggered, then can be complementary to one another between two adjacent permanent magnets
Interval region, making rotor core, magnetic field tends to the uniformity for uniformly improving the rotation of motor rotor in the circumferential.
In one of technical solution, the rotor core further includes the leakproof bore that corresponding each permanent magnet is formed, from
The shaft end of the shaft is observed, and the cross sectional shape of the leakproof bore is isosceles triangle, and the apex angle of the isosceles triangle
It is directed toward the center of the permanent magnet, the cross sectional shape of the permanent magnet is rectangle, and the groove is formed in: the rectangle two
The extended line of the side at end, the extension line of the waist edges such as two of the isosceles triangle and the edge line of the mounting hole enclose
At region.Magnetic field in the region is weaker, it is believed that is the weak magnetic area of rotor core, groove is set to the weak of rotor core
Magnetic region, then it is smaller on the influence of the magnetic field of rotor core, to keep rotor with good performance.
Based on identical inventive concept, the present invention also provides another motor rotor, which includes turning
Axis and the rotor core for being sheathed on the shaft, the rotor core are fixed with multiple circumferentially distributed permanent magnets, and described turn
Sub- iron core includes the mounting hole for being arranged the shaft, and the inner wall of the mounting hole has the groove axially extended, the shaft
It is assembled with the rotor core by heat pressing process or physics is pressed into technique assembly, and is opposite with the groove in the shaft
Region be formed with the convex stupefied structure protruded into the groove.
In the technical solution, not only increase the magnitude of interference of shaft and mounting hole, the convex stupefied structure in shaft and groove it
Between can be clamped in the circumferential, the ability for transmitting tangential force is further reinforced, and shaft and rotor core are further improved
Between fixing intensity, increase the torque that the shaft of motor can be born.
Specifically, the hot pressing secure fit stress between the shaft and the rotor core is less than the rotating shaft material
Yield strength, and it is less than the yield strength of the rotor core material.Hot pressing secure fit stress not will lead to shaft and rotor
There is breakage in the material of iron core, so as to guarantee the fixing intensity between shaft and rotor core, effectively transmits torque.
In a wherein technical solution, the groove includes the multiple grooves circumferentially distributed along the inner wall of mounting hole.By
This can further improve the fixing intensity between shaft and rotor core.
In one of technical solution, the permanent magnet is arranged in the opposite mode of the pole orientation of adjacent permanent magnet, institute
It is opposite one by one that the quantity and position for stating multiple grooves are arranged to one group of permanent magnet identical with wherein pole orientation.Groove can be with
Play the role of label, for distinguishing two groups of opposite permanent magnets of pole orientation, when installing or replacing permanent magnet, operator
Member can directly judge the pole orientation of permanent magnet according to the position of groove, without carrying out additional detection work, improve
Working efficiency.
In a preferred technical solution, along circumferential direction, the center of the groove and the permanent magnetism opposite with the groove
The centre deviation set angle of body；The motor rotor includes at least two rotor cores, from the shaft end of the shaft,
The assembly direction of two neighboring rotor core is opposite and groove is connected to.
In the program, the permanent magnet of two rotor cores is staggered, then can be complementary to one another between two adjacent permanent magnets
Interval region, making rotor core, magnetic field tends to the uniformity for uniformly improving the rotation of motor rotor in the circumferential, to mention
The homogeneity of high rotary speed of rotator of electric motor.
In one of technical solution, the rotor core further includes the leakproof bore that corresponding each permanent magnet is formed, from
The shaft end of the shaft is observed, and the cross sectional shape of the leakproof bore is isosceles triangle, and the apex angle of the isosceles triangle
It is directed toward the center of the permanent magnet, the cross sectional shape of the permanent magnet is rectangle, and the groove is formed in: the rectangle two
The extended line of the side at end, the extension line of the waist edges such as two of the isosceles triangle and the edge line of the mounting hole enclose
At region.Magnetic field in the region is weaker, it is believed that is the weak magnetic area of rotor core, groove is set to the weak of rotor core
Magnetic region, then it is smaller on the influence of the magnetic field of rotor core, to keep rotor with good performance.
The present invention also provides a kind of motor, which includes the motor rotor in any of the above-described technical solution.
The operating reliability of the motor is higher, and the torque exported is bigger.
Based on identical inventive concept, the present invention also provides a kind of assembly methods of motor rotor, are applied to above-mentioned
Motor rotor in technical solution, specifically includes the following steps:
To the heating stepses that the rotor core is heated, heating temperature and duration make to be arranged institute on the rotor core
The aperture for stating the mounting hole of shaft is greater than the diameter of the shaft；
The rotor core after heating is sheathed on the shaft and is arranged step with form the motor rotor；
The cooling step of the cooling motor rotor, the shaft and the inner wall positioned at the mounting hole simultaneously prolong along axial direction
The opposite region of the groove stretched forms the convex stupefied structure protruded into the groove.
In the technical solution, rotor core and shaft are installed by heat pressing process, realize the elastic conjunction of the two, and shaft
The region opposite with groove forms convex stupefied structure.It convex stupefied structure in shaft and can be clamped, transmit in the circumferential between groove
The ability of tangential force is further reinforced, and further improves the fixing intensity between shaft and rotor core, electricity can be improved
The torque that the shaft of motivation can be born.
In specific technical solution, the heating stepses are specifically included: at least two rotor cores of heating, the rotor iron
Core is fixed with multiple circumferentially distributed permanent magnets, and along the circumferential direction of the rotor core, the center of the groove and with
The centre deviation set angle of the opposite permanent magnet of the groove；
The step that is arranged specifically includes: the rotor core after heating being sheathed on the shaft respectively, wherein adjacent two
A rotor core is installed in opposite directions, and is connected to the groove of at least two rotor core.
In the technical solution, motor rotor is formed after installation, the permanent magnet of two rotor cores is staggered, then can phase
The mutually interval region between supplement two adjacent permanent magnets, making rotor core, magnetic field tends to uniformly, improve motor in the circumferential
The uniformity of the rotation of rotor, to improve the homogeneity of rotary speed of rotator of electric motor.
Based on identical inventive concept, the present invention also provides a kind of assembly methods of motor rotor, are applied to above-mentioned
Motor rotor in technical solution, specifically includes the following steps:
The shaft is pressed into the indentation step of the rotor core, before indentation, the diameter of the shaft is greater than institute
The aperture of mounting hole is stated, the depth of the groove is greater than the difference between the diameter of the shaft and the aperture of the mounting hole,
After indentation, the shaft region opposite with the groove for being located at the inner wall of the mounting hole and axially extending, which is formed, protrudes into institute
State the convex stupefied structure in groove.
In the technical solution, the shaft region opposite with groove can also form convex stupefied structure.Convex stupefied structure in shaft
It can be clamped in the circumferential between groove, the ability for transmitting tangential force is further reinforced, and further improves shaft and turns
The torque that the shaft of motor can be born can be improved in fixing intensity between sub- iron core.
Detailed description of the invention
Fig. 1 shows the structural schematic diagram of the first embodiment of motor rotor of the invention；
Fig. 2 shows the schematic diagram of the section structure of the first embodiment of motor rotor of the invention；
Fig. 3 shows the schematic diagram of the section structure of the second embodiment of motor rotor of the invention；
Fig. 4 shows in Fig. 3 partial enlarged view at A；
Fig. 5 shows the schematic diagram of the section structure of the third embodiment of motor rotor of the invention；
Fig. 6 shows the schematic diagram of the section structure of the 5th embodiment of motor rotor of the invention, and direction of observation is
First end face；
Fig. 7 shows the schematic diagram of the section structure of the 5th embodiment of motor rotor of the invention, and direction of observation is
Second end face；
Fig. 8 shows the assembling schematic diagram of the 5th embodiment of motor rotor of the invention；
Fig. 9 shows the partial schematic diagram of the 7th embodiment of rotor core of the invention；
Figure 10 shows the partial schematic diagram of the 8th embodiment of rotor core of the invention.
Appended drawing reference:
1- shaft；11- axis；
The convex stupefied structure of 12-；2- rotor core；
21- permanent magnet；The first permanent magnet of 211-；
The second permanent magnet of 212-；Two terminal side edges of 213- permanent magnet；
22- mounting hole；221- groove；
23- interval region；24- leakproof bore；
Two terminal side edges of 241- leakproof bore；The weak magnetic area 25-.
Specific embodiment
When electric motor operation, rotor is generated rotation by the effect of stator, and to external mechanical output torque.In order to improve
The reliability of torque and holding electric motor operation that motor rotary shaft can be born, needs to improve the shaft and rotor core of rotor
Between fixing intensity.Be arranged in the mounting hole of rotor core in the present invention it is fluted, and the diameter of shaft be greater than mounting hole
Diameter, elastic conjunction may be implemented in shaft and rotor core；The friction between mounting hole and shaft can be improved in groove structure
Power, the tangential force improved between mounting hole and shaft add to further increase the fixing intensity between shaft and rotor core
The torque that can be transmitted between big mounting hole and shaft.
The shaft of motor rotor and rotor core can be assembled using heat pressing process in the further present invention, be installed
Cheng Hou is formed with the convex stupefied structure protruded into groove in shaft.Convex stupefied structure in shaft and in the circumferential can be between groove
Clamping, the ability for transmitting tangential force are further reinforced, further improve the fixing intensity between shaft and rotor core, add
The torque that the shaft of big motor can be born.
To be more clearly understood that embodiments of the present invention, referring to attached drawing, it is described in detail in particular embodiments,
Wherein similar component or identical component are denoted by the same reference numerals.
It is the motor rotor in first embodiment of the invention comprising shaft 1 and be sheathed on shown in referring to Fig.1
The rotor core 2 of shaft 1；
Referring to FIG. 2, rotor core 2 is including multiple circumferentially distributed permanent magnets 21 and for installing rotor core 2
To the mounting hole 22 of shaft 1, the inner wall of the mounting hole 22 has the groove 221 axially extended.Dotted line in Fig. 2, which is shown, to be turned
The processing dimension of axis 1, specifically, the diameter of shaft 1 is greater than the aperture of mounting hole 22 before being arranged, the depth of groove 221, which is greater than, to be turned
In difference between the diameter of axis 1 and the aperture of mounting hole 22, what each size referred to is processing dimension, i.e. the processing of shaft 1
Diameter is greater than the processing aperture of mounting hole 22, and the bottom wall of groove 221 is greater than the diameter of shaft 1 at a distance from the axis of shaft 1.
The assembling process of motor rotor in present embodiment is specifically described below:
Firstly, in a pre-installation, the diameter of shaft 1 is greater than the aperture of mounting hole 22, shaft 1 and rotor core 2 may be implemented
Mounting hole 22 between interference fit.It when installation, can first make 1 cooling meat of shaft, reduce the diameter of shaft 1, then will
The mounting hole 22 of rotor core 2 is sheathed on 1 outside of shaft.Preferably, shaft 1 and mounting hole 22 are interference fit at this time, wait turn
The temperature of axis 1 is back to room temperature, and shaft 1 and the magnitude of interference of mounting hole 22 can increase, then consolidating between shaft 1 and rotor core 2
It is higher to determine intensity.In addition, can also heat rotor core 2 makes its expansion, so that the aperture of mounting hole 22 be made to increase when installation
Greatly, then by the mounting hole 22 of rotor core 2 it is sheathed on 1 outside of shaft, it is preferred that shaft 1 is matched with mounting hole 22 for interference at this time
It closes, the temperature to rotor core 2 is back to room temperature, and shaft 1 and the magnitude of interference of mounting hole 22 can also increase, then shaft 1 and rotor
Fixing intensity between iron core 2 is higher.
In the embodiment, with the increase of shaft 1 and the magnitude of interference of mounting hole 22, the groove 221 of 22 inner wall of mounting hole
The frictional force between mounting hole 22 and shaft 1 can also be improved, the tangential force between mounting hole 22 and shaft 1 is improved, thus into
One step improves the fixing intensity between shaft 1 and rotor core 2, increases the torque that can be transmitted between mounting hole 22 and shaft 1.
Specifically, the depth of groove is greater than the difference between the diameter of shaft and the aperture of mounting hole.It is recessed in the embodiment
The shape of slot inside bottom surface can may be curved surface for plane, be not specifically limited, herein, the depth of groove refers to recessed
Depth inside slot at minimum point.The depth of groove is required to accommodate the convex stupefied structure that shaft is formed.
Fig. 3 and Fig. 4 are please referred to, in order to further improve the fixing intensity between shaft 1 and rotor core 2, improves electricity
The torque that the shaft of motivation can be born, additionally provides second embodiment of the present invention, the electricity provided with first embodiment
Motivation rotor is substantially similar, and difference is only that in present embodiment, after specifically noting that shaft and rotor core are installed, shaft
The convex stupefied structure 12 protruded into groove 221 is formed on 1.
In the embodiment, the processing diameter of shaft 1 and the processing aperture of mounting hole 22 should have biggish difference.?
When the rotor is installed, first rotor core 2 can be heated and expanded, made using heat pressing process assembly shaft 1 and rotor core 2
The aperture increases of mounting hole 22, then the mounting hole 22 of rotor core 2 is sheathed on 1 outside of shaft；Preferably, at this time shaft 1 with
Mounting hole 22 is interference fit, and the temperature to shaft 1 is back to room temperature, since the aperture of mounting hole 22 is differed with the diameter of shaft 1
More, as the temperature of rotor core 2 reduces, mounting hole 22 is gradually recovered aperture, pressure of the shaft 1 by mounting hole 22, from
And the region opposite with the groove 221 of mounting hole 22 of shaft 1 is squeezed into groove 221, is protruded into groove 221 to be formed with
Convex stupefied structure 12.Alternatively, can also using physics indentation technique assembly shaft 1 and rotor core 2, i.e., without heating at
Reason, at normal temperature, physics indentation assembly is formed with the convex stupefied structure 12 protruded into groove 221.
In the embodiment, not only increase the magnitude of interference of shaft 1 Yu mounting hole 22, the convex stupefied structure 12 in shaft 1 with
It can be clamped in the circumferential between groove 221, the ability for transmitting tangential force is further reinforced, and shaft 1 is further improved
Fixing intensity between rotor core 2 increases the torque that the shaft of motor can be born.
Specifically, the depth of groove is greater than the difference between the diameter of shaft and the aperture of mounting hole.It is recessed in the embodiment
The shape of slot inside bottom surface can may be curved surface for plane, be not specifically limited, herein, the depth of groove refers to recessed
Depth inside slot at minimum point.The depth of above-mentioned groove can make groove accommodate the convex stupefied structure formed in shaft.
In addition, need to only form groove 221 in the mounting hole 22 of rotor core 2 in the embodiment, shaft 1 is surface light
Sliding is cylindric, and without carrying out additional processing to shaft 1, manufacture craft is relatively simple, can also improve efficiency.
In view of magnitude of interference is excessive between shaft 1 and the mounting hole 22 of rotor core 2, shaft 1 and/or rotor may cause
There is the defect of material failure in iron core 2, thus, the hot pressing secure fit stress between shaft 1 and rotor core 2 is less than shaft 1
The yield strength of material, and it is less than the yield strength of 2 material of rotor core.
It should be pointed out that above-mentioned yield strength refers to that material damage needs yield strength to be achieved, rather than material becomes
Shape needs deformation intensity to be achieved, and hot pressing secure fit stress should specifically be greater than above-mentioned deformation intensity and be less than yield strength.
In the embodiment, hot pressing secure fit stress not will lead to shaft 1 and breakage occurs in the material of rotor core 2, so as to
Guarantee the fixing intensity between shaft 1 and rotor core 2, effectively transmits torque.
Specifically, above-mentioned hot pressing secure fit stress is calculated according to following relational expressions:
Wherein, hot pressing secure fit amount of the Δ R between shaft and mounting hole, with specific reference to relational expression Δ R=Rs·Ks·
t-Rr·KrT is determining, RsFor the diameter of shaft, RrFor the aperture of mounting hole, R2Close to the bottom surface of shaft and turn for leakproof bore
The distance between axis of axis, KsFor the linear expansivity of shaft, KrFor the linear expansivity of rotor core, t is environment temperature, ρrFor
The Poisson's ratio of rotor core, ρsFor the Poisson's ratio of shaft.
It should be noted that the intensity of shaft 1 should be less than the intensity of rotor core 2 in present embodiment, so that rotor iron
When the temperature of core 2 is back to room temperature, the shape of shaft 1 changes, and forms the convex stupefied structure 12 protruded into groove 221.
Referring to FIG. 5, in order to further improve the fixing intensity between shaft 1 and rotor core 2, in the first embodiment party
On the basis of formula, third embodiment of the present invention is additionally provided, in the embodiment, rotor core 2 is along mounting hole 22
Wall is circumferentially distributed multiple grooves 221.
Using motor rotor provided by present embodiment, since multiple grooves 221 are distributed in the inner wall of mounting hole 22,
Multiple groups tangential force can be provided in the circumferential of shaft 1 when shaft 1 is assemblied in mounting hole 22, thus, thus, it is possible to further
Improve the fixing intensity between shaft 1 and rotor core 2.
Preferably, above-mentioned multiple grooves 221 are distributed evenly in the inner wall of mounting hole 22, then, since setting groove 221 mentions
The tangential force of confession it is circumferentially distributed more uniformly, can also improve between shaft 1 and rotor core 2 transmit torque uniformity.
With continued reference to FIG. 5, it is further, for the ease of installing permanent magnet 21, on the basis of third embodiment, also
Provide the 4th embodiment of the invention, in the embodiment, the pole orientation according to permanent magnet 21 when installation is different, rotor
Fixed permanent magnet 21 divides for the first permanent magnet 211 and the second permanent magnet 212 on iron core 2, the first permanent magnet 211 and the second permanent magnetism
Body 212 is spaced apart from each other setting, and above-mentioned multiple grooves 221 are opposite one by one with the first permanent magnet 211 respectively, alternatively, respectively with second
Permanent magnet 212 is opposite one by one.
It is worth noting that Fig. 5 illustrates only a specific embodiment, in the embodiment, groove 221 respectively with
First permanent magnet 211 is opposite one by one, and the pole S of the first permanent magnet 211 is towards 22 direction of mounting hole.Certainly, in practical applications,
Groove 221 can also be opposite with the permanent magnet 21 in the pole N towards 1 direction of shaft.
In the embodiment, groove 221 is only opposite with one of the first permanent magnet 211 or the second permanent magnet 212, then, is turning
When above-mentioned permanent magnet 21 being installed on sub- iron core 2, according to the magnetic pole of the preset permanent magnet 21 opposite with groove 221, then may be used
To be mounted directly permanent magnet 21, the first permanent magnet 211 of permanent magnet 21 and the second permanent magnet 212 can also be made to be spaced apart from each other and set
It sets.For example, setting permanent magnet 21 and groove of the pole S towards 22 direction of mounting hole in a specific embodiment shown in fig. 5
221 is opposite.Then, when assembling the rotor core 2, when encountering the opposite assembly area of groove 221, just make the pole S of permanent magnet 21
Towards mounting hole 22, when encountering non-recessed 221 opposite assembly area, just make the pole N of permanent magnet 21 towards mounting hole 22.
Installation process is simplified, and improves assembly efficiency, and can reduce the problem of leading to loading error due to operator's carelessness.
In addition, maintenance personal can be directly according to the position of groove 221 when the damage of the permanent magnet 21 of rotor core 2 needs repairing and replaces
The pole orientation for judging permanent magnet 21 is set, without carrying out additional detection work, is improved work efficiency.
Fig. 6 to Fig. 8 is please referred to, on the basis of first embodiment, additionally provides the 5th embodiment of the invention, it should
In embodiment, motor rotor includes two rotor cores 2, along circumferential direction, in the groove 221 of each rotor core 2
The centre deviation set angle of the heart and the permanent magnet 21 opposite with groove 221, the motor rotor from the shaft end of shaft 1,
The assembly direction of two rotor cores 2 is opposite and groove 221 is opposite.
In the embodiment, the assembly direction of two rotor cores 2 on the contrary, be contrary as shown in Figure 6 and Figure 7
Two rotor cores 2, when the permanent magnet 21 of two rotor cores 2 is opposite, the groove 221 of two rotor cores 2 is to be staggered,
The circumferential direction of rotor iron core 2 can then make two to turn as shown in figure 8, keeping the groove 221 of two rotor cores 2 opposite
The permanent magnet 21 of sub- iron core 2 is staggered.Since there are interval regions 23 between two adjacent permanent magnets 21, in above-mentioned interval region
Magnetic field at 23 is weaker, leads to the Magnetic field inhomogeneity in the circumferential of rotor core 2, is then easy to cause the rotation of rotor when electric motor operation
Turn unevenness.In embodiment of the present invention, the permanent magnet 21 of two rotor cores 2 is staggered, then can be complementary to one another above-mentioned interval
Region 23, making rotor core 2, magnetic field tends to the uniformity for uniformly improving the rotation of motor rotor in the circumferential, to improve
The homogeneity of rotary speed of rotator of electric motor.
In the embodiment, when rotor core 2 is installed, by observing the position of groove 221, make two rotor cores 2
Groove 221 is opposite, the permanent magnet 21 of two rotor cores 2 can be made to be staggered, convenient for the assembly manipulation of motor rotor.Specifically
, it so that the permanent magnet 21 of a rotor core 2 is covered another corresponding interval region 23 of rotor core 2.
It designs according to demand, along circumferential direction, the angle of 21 deviation of permanent magnet of two rotor cores 2 is α, then the center of groove 221
The set angle of the centre deviation of the permanent magnet 21 opposite with groove 221 is
Specifically, the assembly direction of two rotor cores 2 is opposite it is to be understood that the end face of rotor core 2 is respectively the
One end face and second end face, when assembling a rotor core 2, shaft 1 protrudes into the installation of rotor core 2 from the direction of first end face
Hole 22, when assembling another rotor core 2, shaft 1 protrudes into the mounting hole 22 of rotor core 2 from the direction of second end face.Assembly
In motor rotor afterwards, the second end face of a rotor core 2 is opposite with the second end face of another rotor core 2, then and two
The assembly direction of a rotor core 2 is opposite.As Fig. 6 shows the first end face of rotor core 2；Fig. 7 then shows rotor core 2
Second end face.
With continued reference to FIG. 9, sixth embodiment of the invention is additionally provided on the basis of first embodiment, it should
In embodiment, on rotor core 2, in each permanent magnet 21 towards the direction of mounting hole 22, it is additionally provided with a leakproof bore
24, it is separated by set distance between the bottom wall and leakproof bore of above-mentioned groove 221.
In the embodiment, the magnetic field that setting leakproof bore 24 can reduce permanent magnet 21 is spread to 22 direction of mounting hole,
The density for improving 21 working region magnetic field of permanent magnet, to improve the working efficiency of motor.Specifically, if groove 221 and anti-
Leakage field hole communicate or the bottom wall of groove 221 and leakproof bore between it is separated by a distance too small, will lead to the intensity of rotor core 2
It reduces, is easily deformed failure.Therefore, in present embodiment, it is separated by set distance between the bottom wall and leakproof bore of groove 221,
The intensity that rotor core 2 can be improved improves the service life of motor rotor.
Rotor core has weak magnetic area in permanent magnet and leakproof bore periphery, and the magnetic line of force of weak magnetic area is distributed less, magnetic flux
Density is smaller.Above-mentioned groove is then set to the weak magnetic area of rotor core 2, then smaller on the influence of the magnetic field of rotor core 2, to make
Rotor is with good performance.
In specific embodiment, the cross sectional shape of permanent magnet and the shape of leakproof bore are indefinite, but can substantially press
The weak magnetic area of rotor core is determined according to following methods: along circumferential direction, two endpoints point of two terminal side edges 213 of permanent magnet
Not Wei point A and point B, two endpoints of two terminal side edges 241 of leakproof bore are respectively point C and point D, then with 221 phase of groove
Pair the point C of two terminal side edges 241 of leakproof bore and two of the extended line of point D line and the adjacent permanent magnet of groove 221
The region that the edge line of the point A of terminal side edge 213 and the extended line of point B line and mounting hole 22 surrounds is known as weak magnetic area 25, should
In region, the magnetic field that permanent magnet 21 generates is weaker, and groove 221 is set in above-mentioned weak magnetic area 25.In the embodiment, groove
221 are located at the weak magnetic area 25 of permanent magnet 21, then smaller on the influence of the magnetic field of rotor core 2, so that rotor be made to have good property
Energy.
Referring to FIG. 10, additionally providing the 7th embodiment of the invention, the implementation on the basis of sixth embodiment
In mode, from the shaft end of shaft 1, the cross sectional shape of permanent magnet 21 is rectangle, and the cross sectional shape of leakproof bore 24 is substantially
Isosceles triangle, then two terminal side edges 213 of two terminal side edges 241 of leakproof bore and permanent magnet are straight line, permanent magnet
Extended line, the extended line of two terminal side edges 241 of leakproof bore and the edge line of mounting hole 22 of two terminal side edges 213 enclose
At weak magnetic area 25, which is weak magnetic area 25, and groove 221 is then located in the weak magnetic area 25.
Specifically, the mode that permanent magnet is installed on rotor core is unlimited, for example, permanent magnet can be adhered to rotor core
Side, or permanent magnet is embedded in rotor core from the end face of rotor core.
The present invention also provides a kind of motor, which includes the motor rotor in any of the above-described scheme.The electricity
The operating reliability of motivation is higher, and the torque that the shaft of motor can be born is bigger.
The specific motor can be durface mounted permanent magnet (surface permanent magnet, abbreviation SPM) motor,
It may be built-in permanent magnetic (Interior permanent magnet, abbreviation IPM) motor.
Based on identical inventive concept, the present invention also provides a kind of assembly applied to motor rotor in above scheme
Method.Specifically, motor rotor includes shaft and rotor core in an embodiment, rotor core has mounting hole, peace
The inner wall for filling hole has groove, wherein the processing diameter of shaft is greater than the processing diameter of mounting hole, and the working depth of groove is greater than
Difference between the processing diameter of shaft and the processing aperture of mounting hole.In the embodiment, shaft and rotor core pass through heat
Technique assembly is pressed, assembly method includes:
First step is heating stepses, is heated to rotor core, and controlling heating temperature and duration makes on rotor core
The aperture for being arranged the mounting hole of shaft is greater than the processing diameter of shaft；Second step is to be arranged step, by the rotor iron after heating
Core retainer plate is set to the outside of shaft；Third step is cooling step, and rotor core is cooled to room temperature, with the temperature of rotor core
It reduces, rotor core cooling meat restores the aperture of mounting hole, to make shaft be under pressure, make shaft and be located at installation
The inner wall in the hole and opposite Regional contraction of the groove axially extended enters in groove, forms the convex stupefied structure protruded into groove.It should
It in embodiment, the convex stupefied structure in shaft and can be clamped in the circumferential between groove, the ability for transmitting tangential force is further
Reinforcement, further improve the fixing intensity between shaft and rotor core, can be improved what the shaft of motor can be born
Torque.
Further, in another embodiment, motor rotor includes at least two rotor cores；Along circumferential direction,
The centre deviation set angle at the center of the groove of rotor core and the permanent magnet opposite with groove, being arranged step and specifically including makes
Two adjacent rotor cores are installed in opposite directions, and are connected to the groove of two neighboring rotor core.
Specifically, the assembly direction of two rotor cores is opposite it is to be understood that the end face of rotor core is respectively first
End face and second end face, when assembling a rotor core, shaft protrudes into the mounting hole of rotor core from the direction of first end face, dress
When with another rotor core, shaft protrudes into the mounting hole of rotor core from the direction of second end face.Motor after assembly turns
In son, the second end face of a rotor core and the second end face of another rotor core are opposite, then the dress of two rotor cores
With contrary.
In the embodiment, the assembly directions of two rotor cores on the contrary, when the permanent magnet of two rotor cores is opposite,
The groove of two rotor cores is to be staggered, and the direction of rotor iron core keeps the groove of two rotor cores opposite.It then can be with
The permanent magnet of two rotor cores is set to be staggered.Since there are interval regions between two adjacent permanent magnets, in above-mentioned spacer region
Magnetic field at domain is weaker, leads to rotor core Magnetic field inhomogeneity in the circumferential, is then easy to cause the rotation of rotor when electric motor operation
Turn unevenness.In embodiment of the present invention, the permanent magnet of two rotor cores is staggered, then can be complementary to one another above-mentioned spacer region
Domain, making rotor core, magnetic field tends to the uniformity for uniformly improving the rotation of motor rotor in the circumferential, to improve motor
The homogeneity of rotary speed of rotator.
In the embodiment, when rotor core is installed, by observing the position of groove, connect the groove of two rotor cores
It is logical, the permanent magnet of two rotor cores can be made to be staggered, convenient for the assembly manipulation of motor rotor.Specifically, above-mentioned two
The groove connection of rotor core refers to that two grooves have lap, it should at least make the permanent magnetism of a rotor core
Body can cover the corresponding interval region of another rotor core.It is, of course, preferable to embodiment in, above-mentioned two rotor core
Groove should be opposite, more accurately to control two rotor cores in the deflection angle of circumferential direction.
Based on identical inventive concept, the present invention also provides another dresses for being applied to motor rotor in above scheme
Method of completing the square.Specifically, motor rotor includes shaft and rotor core in an embodiment, rotor core has mounting hole,
The inner wall of mounting hole has groove, wherein the processing diameter of shaft is greater than the processing diameter of mounting hole, and the working depth of groove is big
Difference between the processing diameter of shaft and the processing aperture of mounting hole.In the embodiment, shaft passes through with rotor core
Physics is pressed into technique assembly, and assembly method includes:
By the indentation step of shaft indentation rotor core, before indentation, the diameter of shaft is greater than the aperture of mounting hole, recessed
The depth of slot is greater than the difference between the diameter of shaft and the aperture of mounting hole, after indentation, shaft with it is interior positioned at mounting hole
The wall and opposite region of the groove axially extended forms the convex stupefied structure protruded into groove.
In the technical solution, the shaft region opposite with groove can also form convex stupefied structure.Convex stupefied structure in shaft
It can be clamped in the circumferential between groove, the ability for transmitting tangential force is further reinforced, and further improves shaft and turns
The torque that the shaft of motor can be born can be improved in fixing intensity between sub- iron core.
Specific implementation of the invention is described in detail above by reference to attached drawing, it is clear that those skilled in the art
Various changes and modifications can be made to the invention by member without departing from the spirit and scope of the present invention.If in this way, of the invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to encompass these to these modifications and variations
Including modification and variation.
Claims (17)
1. a kind of motor rotor, including shaft and the rotor core for being sheathed on the shaft, the rotor core is fixed with more
A circumferentially distributed permanent magnet, which is characterized in that
The rotor core includes the mounting hole for being arranged the shaft, and the inner wall of the mounting hole is recessed with axially extending
Slot, before being arranged, the diameter of the shaft is greater than the aperture of the mounting hole, and the depth of the groove is greater than the shaft
Difference between diameter and the aperture of the mounting hole.
2. motor rotor according to claim 1, which is characterized in that the shaft and the rotor core are being arranged
Afterwards, the convex stupefied structure protruded into the groove is formed in the shaft region opposite with the groove.
3. motor rotor according to claim 2, which is characterized in that the heat between the shaft and the rotor core
It presses secure fit stress to be less than the yield strength of the rotating shaft material, and is less than the yield strength of the rotor core material.
4. motor rotor according to claim 1, which is characterized in that the groove includes the inner wall circumferential direction along mounting hole
Multiple grooves of distribution.
5. motor rotor according to claim 4, which is characterized in that the permanent magnet is with the magnetic pole side of adjacent permanent magnet
It is arranged to opposite mode, the quantity of the multiple groove and position are arranged to one group of permanent magnetism identical with wherein pole orientation
Body is opposite one by one.
6. motor rotor according to claim 1, which is characterized in that along circumferential direction, the center of the groove and with
The centre deviation set angle of the opposite permanent magnet of the groove；
The motor rotor includes at least two rotor cores, from the shaft end of the shaft, two neighboring rotor core
Assembly direction it is opposite and groove is connected to.
7. motor rotor according to claim 1, which is characterized in that the rotor core further includes corresponding each permanent magnetism
The leakproof bore that body is formed, from the shaft end of the shaft from, the cross sectional shape of the leakproof bore is isosceles triangle, and institute
The apex angle for stating isosceles triangle is directed toward the center of the permanent magnet, and the cross sectional shape of the permanent magnet is rectangle, described recessed
Slot is formed in: the extension line of the extended line of the side at the rectangle both ends, the waist edges such as two of the isosceles triangle, Yi Jisuo
State the region that the edge line of mounting hole surrounds.
8. a kind of motor rotor, including shaft and the rotor core for being sheathed on the shaft, the rotor core is fixed with more
A circumferentially distributed permanent magnet, which is characterized in that
The rotor core includes the mounting hole for being arranged the shaft, and the inner wall of the mounting hole is recessed with axially extending
Slot, the shaft and the rotor core by heat pressing process assemble or physics be pressed into technique assembly, and the shaft with
The opposite region of the groove is formed with the convex stupefied structure protruded into the groove.
9. motor rotor according to claim 8, which is characterized in that the heat between the shaft and the rotor core
It presses secure fit stress to be less than the yield strength of the rotating shaft material, and is less than the yield strength of the rotor core material.
10. motor rotor according to claim 8, which is characterized in that the groove includes the inner wall week along mounting hole
To multiple grooves of distribution.
11. motor rotor according to claim 10, which is characterized in that the permanent magnet is with the magnetic pole of adjacent permanent magnet
Contrary mode is arranged, and the multiple number of recesses and position are arranged to one group identical with wherein pole orientation forever
Magnet is opposite one by one.
12. motor rotor according to claim 8, which is characterized in that along circumferential direction, the center of the groove and with
The centre deviation set angle of the opposite permanent magnet of the groove；
The motor rotor includes at least two rotor cores, from the shaft end of the shaft, two neighboring rotor core
Assembly direction it is opposite and groove is connected to.
13. motor rotor according to claim 8, which is characterized in that the rotor core further includes corresponding to each forever
The leakproof bore that magnet is formed, from the shaft end of the shaft, the cross sectional shape of the leakproof bore is isosceles triangle, and
The apex angle of the isosceles triangle is directed toward the center of the permanent magnet, and the cross sectional shape of the permanent magnet is rectangle, described
Groove is formed in: the extension line of the extended line of the side at the rectangle both ends, the waist edges such as two of the isosceles triangle, and
The region that the edge line of the mounting hole surrounds.
14. a kind of motor, which is characterized in that including the described in any item motor rotors of such as claim 1~13.
15. a kind of assembly method applied to the motor rotor of claim 1 or 8, which is characterized in that including following step
It is rapid:
To the heating stepses that the rotor core is heated, heating temperature and duration make to be arranged described turn on the rotor core
The aperture of the mounting hole of axis is greater than the diameter of the shaft；
The rotor core after heating is sheathed on the shaft and is arranged step with form the motor rotor；
The cooling step of the cooling motor rotor, the shaft and the inner wall for being located at the mounting hole simultaneously axially extend
The opposite region of groove forms the convex stupefied structure protruded into the groove.
16. assembly method according to claim 15, it is characterised in that:
The heating stepses specifically include: at least two rotor cores of heating, the rotor core, which is fixed with, multiple circumferentially to be divided
The permanent magnet of cloth, and along the circumferential direction of the rotor core, the center of the groove and the permanent magnet opposite with the groove
Centre deviation set angle；
The step that is arranged specifically includes: the rotor core after heating being sheathed on the shaft respectively, wherein two neighboring turn
Sub- iron core is installed in opposite directions, and is connected to the groove of at least two rotor core.
17. a kind of assembly method applied to the motor rotor of claim 1 or 8, which is characterized in that including following step
It is rapid:
The shaft is pressed into the indentation step of the rotor core, before indentation, the diameter of the shaft is greater than the peace
The aperture in hole is filled, the depth of the groove is greater than the difference between the diameter of the shaft and the aperture of the mounting hole, is pressing
After entering, the shaft region formation opposite with the groove for being located at the inner wall of the mounting hole and axially extending protrudes into described recessed
Convex stupefied structure in slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810253405.4A CN110365146A (en) | 2018-03-26 | 2018-03-26 | The assembly method of motor rotor, motor and motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810253405.4A CN110365146A (en) | 2018-03-26 | 2018-03-26 | The assembly method of motor rotor, motor and motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110365146A true CN110365146A (en) | 2019-10-22 |
Family
ID=68213016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810253405.4A Pending CN110365146A (en) | 2018-03-26 | 2018-03-26 | The assembly method of motor rotor, motor and motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110365146A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2627714Y (en) * | 2003-05-27 | 2004-07-21 | 王俊 | Rotor component of permanent magnetic DC motor |
| JP2007104888A (en) * | 2005-09-07 | 2007-04-19 | Toshiba Corp | Rotary electric machine |
| CN101350536A (en) * | 2007-07-20 | 2009-01-21 | 乐金电子(天津)电器有限公司 | Core lamination stack structure of electric machine rotor |
| CN101431282A (en) * | 2008-12-13 | 2009-05-13 | 永济新时速电机电器有限责任公司 | Frequency conversion permanent magnet synchronous motor |
| WO2014090050A1 (en) * | 2012-12-10 | 2014-06-19 | 艾默生环境优化技术(苏州)有限公司 | Motor rotor |
| JP2015053822A (en) * | 2013-09-09 | 2015-03-19 | トヨタ自動車株式会社 | Rotor and method of manufacturing rotor |
| CN104518586A (en) * | 2013-09-27 | 2015-04-15 | 北京明诚技术开发有限公司 | Straight slot pole staggered structure for large-scale PMSM |
| US20170025933A1 (en) * | 2014-04-02 | 2017-01-26 | Aichi Steel Corporation | Method and apparatus for manufacturing interior permanent magnet-type inner rotor |
-
2018
- 2018-03-26 CN CN201810253405.4A patent/CN110365146A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2627714Y (en) * | 2003-05-27 | 2004-07-21 | 王俊 | Rotor component of permanent magnetic DC motor |
| JP2007104888A (en) * | 2005-09-07 | 2007-04-19 | Toshiba Corp | Rotary electric machine |
| CN101350536A (en) * | 2007-07-20 | 2009-01-21 | 乐金电子(天津)电器有限公司 | Core lamination stack structure of electric machine rotor |
| CN101431282A (en) * | 2008-12-13 | 2009-05-13 | 永济新时速电机电器有限责任公司 | Frequency conversion permanent magnet synchronous motor |
| WO2014090050A1 (en) * | 2012-12-10 | 2014-06-19 | 艾默生环境优化技术(苏州)有限公司 | Motor rotor |
| JP2015053822A (en) * | 2013-09-09 | 2015-03-19 | トヨタ自動車株式会社 | Rotor and method of manufacturing rotor |
| CN104518586A (en) * | 2013-09-27 | 2015-04-15 | 北京明诚技术开发有限公司 | Straight slot pole staggered structure for large-scale PMSM |
| US20170025933A1 (en) * | 2014-04-02 | 2017-01-26 | Aichi Steel Corporation | Method and apparatus for manufacturing interior permanent magnet-type inner rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205986571U (en) | Frameless combination formula PMSM | |
| CN106026592A (en) | Frameless combined type permanent magnet synchronous motor | |
| JP2016513946A (en) | Magnet holding apparatus and method | |
| KR102175409B1 (en) | Rotor of wound rotor synchronous motor | |
| JP2016533148A (en) | Assembly for electric machine, method for manufacturing assembly, and electric machine provided with assembly | |
| CN204012986U (en) | A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor | |
| CN105210268B (en) | Permanent magnet submerged formula rotating electric machine and its manufacturing method | |
| WO2011014994A1 (en) | Permanent magnet synchronous motor | |
| CN110365146A (en) | The assembly method of motor rotor, motor and motor rotor | |
| CN110114960A (en) | Pole shoe, motor and the vehicles | |
| CN215498470U (en) | Halbach array permanent magnet motor rotor and Halbach array permanent magnet motor | |
| CN208782703U (en) | A kind of brushless motor | |
| CN107453504B (en) | A kind of permanent magnet synchronous motor cage-type rotor with composite radiating structure | |
| CN207835193U (en) | P-m rotor, magneto and compressor | |
| CN110445273A (en) | A kind of rotor assembly, motor and compressor | |
| CN102969811B (en) | Modulating ring rotor with low consumption and high mechanical reliability | |
| CN102522835B (en) | Brushless direct current permanent magnet motor having characteristics of low noise, low vibration and low temperature rise and assembly technology thereof | |
| CN206379858U (en) | A kind of permagnetic synchronous motor | |
| CN208337266U (en) | It is a kind of for remanufacturing the p-m rotor of replacement | |
| WO2023000865A1 (en) | Halbach array permanent magnet electric motor rotor, rotor manufacturing method and halbach array permanent magnet electric motor | |
| CN112953043A (en) | Stator module, rotor assembly and central disc shaft core dual-rotor motor | |
| CN208015474U (en) | Rotor structure and motor with it | |
| CN206533216U (en) | A kind of rotor insulator | |
| CN220325361U (en) | Permanent magnet synchronous reluctance motor rotor structure | |
| CN109787417A (en) | A kind of straight drive magnetic drive pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |