CN113572286A - Disc type motor rotor - Google Patents
Disc type motor rotor Download PDFInfo
- Publication number
- CN113572286A CN113572286A CN202110894707.1A CN202110894707A CN113572286A CN 113572286 A CN113572286 A CN 113572286A CN 202110894707 A CN202110894707 A CN 202110894707A CN 113572286 A CN113572286 A CN 113572286A
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- Prior art keywords
- magnetic
- limiting
- magnetic conduction
- block
- radial
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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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
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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
Abstract
The invention provides a disk type motor rotor, which comprises a non-magnetic-conduction retainer, wherein the non-magnetic-conduction retainer is provided with a radial limiting piece and a plurality of circumferential limiting pieces, and the circumferential limiting pieces are connected with the radial limiting piece at intervals and extend outwards; the magnetic conduction assembly is provided with a plurality of magnetic conduction blocks, each magnetic conduction block is kept between two adjacent circumferential limiting pieces, and the magnetic conduction blocks are abutted with the circumferential limiting pieces to form a limiting channel; the ring component is sleeved on the outer side of the magnetic conduction block and enables the magnetic conduction block to be abutted and fixed between the radial limiting piece and the ring component; a plurality of axial stop nails, each axial stop nail is kept in one in the spacing passageway, radial locating part and inner ring are right magnetic conduction piece carries out radial fixed, and two adjacent circumference locating parts carry out circumference to magnetic conduction piece and fix, and utilize axial stop nail is right magnetic conduction piece carries out axial fixity, prevents that magnetic conduction piece rocks and drops.
Description
Technical Field
The invention relates to the field of disk motors, in particular to a disk motor rotor.
Background
The motor is an electromagnetic device which realizes electric energy conversion or transmission according to the electromagnetic induction law, and the motor is mainly used for generating driving torque and serving as a power source of electric appliances or various machines. The motor comprises a stator and a rotor, wherein the stator is an electric stationary part and mainly comprises a stator iron core and a stator winding, and the stator is used for generating a rotating magnetic field so that the rotor is cut by magnetic lines of force in the magnetic field to generate current.
The motor can be divided into a radial magnetic field motor and an axial magnetic field motor, the axial magnetic field motor is also called a disk motor, and the axial magnetic field motor has the characteristics of small volume, light weight, short axial size, high power density and the like, can be used in most thin installation occasions, and is widely used. The existing rotor generally comprises a retainer, a protection ring and magnetic steel, wherein a plurality of clamping grooves are formed in the periphery of the retainer, the magnetic steel is clamped with the retainer through the clamping grooves, and the protection ring is sleeved on the outer periphery of the magnetic steel so as to fix the magnetic steel.
The switched reluctance motor is designed on the principle that the magnetic circuit structure is always better than the minimum reluctance, and soft magnetic conductive materials can be used for replacing magnetic steel in the motor, so that the cost of the motor is greatly reduced. The related design of the current axial magnetic field switch reluctance motor is less. The switched reluctance motor needs to use the magnetic conduction blocks with excellent magnetic conduction performance to improve the motor performance, the magnetic conduction blocks formed by stacking the sheet-shaped silicon steel sheets have excellent magnetic conduction performance at present, but the silicon steel sheets and the silicon steel sheets are discrete in the magnetic conduction blocks formed by stacking the sheet-shaped silicon steel sheets, and industrial production is difficult to carry out.
Disclosure of Invention
In order to solve the above problems, the present invention provides a rotor structure of a disc motor, which is convenient for industrial mass production.
According to an aspect of the present invention, there is provided a disk motor rotor, comprising:
the non-magnetic-conduction retainer is provided with a radial limiting part and a plurality of circumferential limiting parts, and the circumferential limiting parts are connected with the radial limiting part at intervals and extend outwards;
the magnetic conduction assembly is provided with a plurality of magnetic conduction blocks, each magnetic conduction block is kept between two adjacent circumferential limiting pieces, and the magnetic conduction blocks are abutted with the circumferential limiting pieces to form a limiting channel;
the ring component is sleeved on the outer side of the magnetic conduction block and enables the magnetic conduction block to be abutted and fixed between the radial limiting piece and the ring component;
a plurality of axial restraining pins, each of the axial restraining pins being retained within one of the restraining channels.
As a preferred technical solution, the circumferential limiting part is provided with a first groove, the magnetic conducting block is provided with a second groove, and when the magnetic conducting block abuts against the circumferential limiting part, the first groove is opposite to the second groove and forms the limiting channel.
As an optimized technical scheme, the whole magnetic conduction block is trapezoidal, the magnetic conduction block is formed by stacking a plurality of magnetic conduction sheets with different sizes along the height direction of the trapezoid, and the second groove is formed in the side edge of the trapezoid and penetrates through each magnetic conduction sheet.
According to the preferred technical scheme, the magnetic conductive sheet is of an arc-shaped structure, the trapezoid bottom of the magnetic conductive block is an arc-shaped bulge, and the trapezoid top of the magnetic conductive block is an arc-shaped groove. As the preferred technical scheme, the axial limiting nail is inserted into the ring component.
Preferably, the ring assembly includes an inner ring, the inner ring has a plurality of guide holes, each of the guide holes is opposite to one of the limiting channels, and the axial limiting pin is inserted into the limiting channel through the guide hole.
As a preferable technical scheme, the ring assembly further comprises an outer ring, and the outer ring is sleeved outside the inner ring and fixes the axial limit nail.
Preferably, the axis line stopper is fixed in abutment between the radial stopper and the outer ring.
Preferably, the outer ring comprises at least one fiber tow, the fiber tow is wound outside the inner ring, and the outer ring is formed by curing a binder.
Preferably, the non-magnetic conducting holder comprises a plurality of layers of first base materials, and the plurality of layers of first base materials are stacked and hot-pressed along the axial direction of the rotor to form the non-magnetic conducting holder.
According to another aspect of the present invention, the present invention further provides a method for forming a rotor of a disc motor, comprising the steps of:
(a) providing a non-magnetic-conduction retainer, wherein the non-magnetic-conduction retainer is provided with a radial limiting part and a plurality of circumferential limiting parts, and the circumferential limiting parts are connected with the radial limiting part at intervals and extend outwards;
(b) providing a magnetic conduction assembly, wherein the magnetic conduction assembly is provided with a plurality of magnetic conduction blocks and a yoke piece, and the magnetic conduction blocks are annularly arranged on the yoke piece at intervals;
(c) the circumferential limiting piece is embedded between two adjacent magnetic conduction blocks and is abutted against the yoke piece, so that a limiting channel is formed between the magnetic conduction block 210 and the circumferential limiting piece;
(d) an inner ring is sleeved on the outer side of the magnetic conduction block, and the guide holes in the inner ring correspond to the limiting channels one to one;
(e) sequentially penetrating a plurality of axial limiting nails through the guide holes one by one and inserting the axial limiting nails into the limiting channels;
(f) an outer ring is sleeved on the outer side of the inner ring and fixes the axial limiting nail.
As a preferred technical solution, the step (a) further comprises the steps of:
(a1) and laminating and hot-pressing the multiple layers of the first base materials to form the non-magnetic-conduction holder.
As a preferable technical solution, the first base material has a radial direction limiting portion and a circumferential direction limiting portion, and further in the step (a1), the radial direction limiting portions of the plurality of layers of the first base material are overlapped and hot-pressed to form the radial direction limiting member, and the circumferential direction limiting portions of the plurality of layers of the first base material are overlapped and hot-pressed to form the circumferential direction limiting member.
As a preferred technical solution, the circumferential limiting member has an upper limiting region, a middle recessed region and a lower limiting region which are axially arranged, and the width of the circumferential limiting portion located in the middle recessed region is smaller than the width of the circumferential limiting portion located in the upper limiting region and the lower limiting region, respectively, so that the middle recessed region forms a first groove.
As a preferred technical solution, the step (b) further comprises the steps of:
(b1) stamping the second substrate by a stamping device;
(b2) and rolling the punched second base material at the same angular speed by using rolling equipment to form the magnetic conducting component.
As a preferable technical solution, the second substrate after stamping has a plurality of magnetic conductive sheets and a yoke, the plurality of magnetic conductive blocks are arranged on the yoke at intervals, and further in the step (b2), the yoke is formed by rolling the yoke, and the plurality of magnetic conductive sheets are rolled one by one to form the plurality of magnetic conductive blocks arranged in a ring shape.
As a preferable technical scheme, the magnetic conductive sheets are provided with recessed portions, and further in the structure of each magnetic conductive block, the recessed portions on the magnetic conductive sheets form second grooves, and the second grooves and the first grooves are opposite to form limiting channels.
As a preferable technical solution, in the structure of each magnetic conductive block, the plurality of magnetic conductive pieces are stacked in a radial direction and in a manner of gradually increasing in width to form the magnetic conductive block.
As a preferred technical solution, the step (f) further comprises the steps of:
and winding fiber tows outside the inner ring, and curing the fiber tows by using a binder to form the outer ring.
As a preferred technical solution, the method further comprises the following steps between the steps (e) and (f):
removing the yoke.
Compared with the prior art, the technical scheme has the following advantages:
the radial limiting piece and the ring assembly are fixed at two radial ends of the magnetic conduction block so as to radially fix the magnetic conduction block; the magnetic conduction blocks are fixed between two adjacent circumferential limiting pieces for circumferential fixing; and utilize axial spacing nail with the magnetic conduction piece cooperation is in order to prevent the axial displacement takes place for the magnetic conduction piece, so not only simple structure is novel, effectively promotes the fixed effect of magnetic conduction piece in addition, avoids appearing rocking and the obscission and influences the rotor performance. In addition, the ring subassembly includes inner ring and outer loop, prevents inner ring stress deformation, avoids the inner ring to the radial fixed effect inefficacy of magnetic conduction piece. And non-magnetic conduction holder is formed by the first substrate hot pressing coincide of multilayer, and the magnetic conduction piece is by not unidimensional magnetic conduction piece to form with the mode coincide that the size is gradually big, and not only shaping convenient and fast makes the shaping of magnetic conduction piece more convenient and fast through the mode that piles up, and a plurality of magnetic conduction pieces are at book system and coincide in-process, and a plurality of magnetic conduction pieces are connected yoke portion, in order to prevent that it from appearing the discrete phenomenon of magnetic conduction piece at book system in-process, and stack into the magnetic conduction piece at the book system after, the excision yoke portion can, and is a plurality of this moment the magnetic conduction piece closely laminates, and is fixed in radial locating part with between the inner ring, prevents that the magnetic conduction piece is discrete, is favorable to developing the industrialization batch production, and simple structure is novel moreover, effective reduce cost.
The invention is further described with reference to the following figures and examples.
Drawings
Fig. 1 is a schematic structural view of a disc motor rotor according to the present invention;
FIG. 2 is a schematic structural view of a non-magnetic cage according to the present invention;
FIG. 3 is a schematic structural view of the magnetic conductive assembly according to the present invention;
FIG. 4 is a schematic structural view of the inner ring of the present invention;
FIG. 5 is a schematic view of the assembly of the non-magnetically conductive cage, the magnetically conductive assembly and the inner ring according to the present invention;
FIG. 6 is a schematic view of the yoke of the present invention after cutting;
FIG. 7 is a schematic structural view of the magnetic conductive block of the present invention;
FIG. 8 is a schematic structural diagram of a first substrate according to the present invention;
fig. 9 is a schematic structural view of the circumferential limiting member according to the present invention;
FIG. 10 is a schematic structural view of a second substrate according to the present invention;
fig. 11 is a flow chart of a method for forming a disc motor rotor according to the present invention.
In the figure: 100 non-magnetic-conduction retainers, 110 radial limiters, 120 circumferential limiters, 121 first grooves, 130 embedding parts, 200 magnetic-conduction assemblies, 210 magnetic-conduction blocks, 211 second grooves, 220 yoke pieces, 300 ring assemblies, 310 inner rings, 311 guide holes, 320 outer rings, 400 multiple axial limiting nails, 1000 first base materials, 1100 radial limiters, 1200 circumferential limiters, 1201 upper limiting areas, 1202 middle recessed areas, 1203 lower limiters, 2000 second base materials, 2100 magnetic-conduction plates, 2110 recessed parts and 2200 yoke parts.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
As shown in fig. 1 to 6, the disc motor rotor includes:
a non-magnetic-conduction holder 100, wherein the non-magnetic-conduction holder 100 has a radial limiting part 110 and a plurality of circumferential limiting parts 120, and the plurality of circumferential limiting parts 120 are connected to the radial limiting part 110 at intervals and extend outwards;
a magnetic conducting assembly 200, wherein the magnetic conducting assembly 200 has a plurality of magnetic conducting blocks 210, each magnetic conducting block 210 is held between two adjacent circumferential position-limiting members 120, and the magnetic conducting blocks 210 abut against the circumferential position-limiting members 120 to form a position-limiting channel;
a ring assembly 300, wherein the ring assembly 300 is sleeved outside the magnetic conductive block 210, and the magnetic conductive block 210 is abutted and fixed between the radial limiting member 110 and the ring assembly 300;
a plurality of axial restraining pins 400, each of the axial restraining pins 400 being retained within one of the restraining channels.
The radial limiting member 110 and the ring assembly 300 are fixed at two radial ends of the magnetic conductive block 210, so as to radially fix the magnetic conductive block 210; the magnetic conductive block 210 is fixed between two adjacent circumferential limiting pieces 120 for circumferential fixing; and utilize axial stop pin 400 with magnetic conduction piece 210 cooperation is in order to prevent magnetic conduction piece 210 from taking place axial displacement, so not only simple structure is novel, effectively promotes magnetic conduction piece 210's fixed effect still, avoids appearing rocking and the phenomenon that drops and influence the rotor performance.
As shown in fig. 2 and fig. 3, the circumferential limiting member 120 is provided with a first groove 121, the magnetic conductive block 210 is provided with a second groove 211, and when the magnetic conductive block 210 abuts against the circumferential limiting member 120, the first groove 121 and the second groove 211 are opposite to each other and form the limiting channel.
Specifically, circumference locating part 120 along rotor circumference's both sides, it has seted up respectively first recess 121, magnetic conduction block 210 along second recess 211 has been seted up respectively to rotor circumference's both sides, so that magnetic conduction block 210 imbeds in two behind circumference locating part 120, magnetic conduction block 210 along rotor circumference's both sides form respectively spacing passageway, every promptly magnetic conduction block 210 corresponds two respectively axial stop pin 400, and two axial stop pin 400 is located separately magnetic conduction block 210 circumference's both sides, further avoid magnetic conduction block 210 takes place axial displacement.
More specifically, the axial stopper pin 400 is partially embedded in the first groove 121 and partially embedded in the second groove 211, so as to prevent the magnetic conductive block 210 from moving axially. Wherein the axial spacing pin 400 is adapted to the cross-sectional shape of the spacing channel, and may be circular, square, triangular, etc., again without limitation. In addition, the cross-sectional shape of the first groove 121 and the cross-sectional shape of the second groove 211 combined relatively are the same as those of the limiting channel, for example, a circular shape is taken as an example, the cross-sectional shapes of the first groove 121 and the second groove 211 are both semicircular, and the first groove 121 and the second groove 211 are combined to form the limiting channel with the circular cross-sectional shape, wherein the cross-sectional areas of the first groove 121 and the second groove 211 can be the same, and certainly, the cross-sectional area of the second groove 211 can be larger than that of the first groove 121, so that the contact area between the axial limiting nail 400 and the magnetic conductive block 210 is increased, and the fixing effect of the axial limiting nail 400 on the axial movement of the magnetic conductive block 210 is improved.
As shown in fig. 1 to 5, the ring assembly 300 includes an inner ring 310, the inner ring 310 has a plurality of guide holes 311, each of the guide holes 311 is opposite to one of the limiting channels, and the axial limiting pin 400 is inserted into the limiting channel through the guide hole 311.
The inner ring 310, in addition to the radial limiting member 110, radially fixes the magnetic conductive block 210, and the guide hole 311 is further opened to allow the axial limiting nail 400 to pass through, so that the axial limiting nail 400 is inserted and fixed to the ring assembly 300. In addition, the inner ring 310 is abutted to the outer side of the circumferential limiting member 120, and the inner ring 310 may be made of glass fiber or other materials, and has the characteristics of insulation, strong heat resistance, good corrosion resistance and the like, so as to prolong the service life of the inner ring 310.
As shown in fig. 1, the ring assembly 300 further includes an outer ring 320, and the outer ring 320 is sleeved outside the inner ring 310 and fixes the axial stopper pin 400.
Specifically, referring to fig. 2, one end of the first groove 121 extends to an end surface where the circumferential limiting member 120 is connected to the radial limiting member 110, and the other end extends to an end surface where the circumferential limiting member 120 is sleeved with the inner ring 310, referring to fig. 3, the second groove 211 extends to two radial ends of the magnetic conductive block 210, so that the axial limiting nail 400 is held behind a limiting channel formed by the first groove 121 and the second groove 211, and under the action of the outer ring 320, the axial limiting member 400 is abutted and fixed between the radial limiting member 110 and the outer ring 320.
The outer ring 320 not only fixes the axial limit pin 400, but also further prevents the inner ring 310 from being deformed by stress, thereby preventing the radial fixing effect of the inner ring 310 on the magnetic conductive block 210 from being invalid.
The outer ring 320 includes at least one fiber tow wound around the outside of the inner ring 310 and cured with a binder to form the outer ring 320. The fiber tows may be carbon fibers to improve strength and prevent the outer ring 320 from being damaged, wherein the binder may be glue.
The dimensions of the magnetic conductive blocks 210, the circumferential position limiter 120, the inner ring 310 and the outer ring 320 in the axial direction of the rotor are consistent and are thin, so that the disk motor rotor shown in fig. 1 is formed.
As shown in fig. 1, the dimension of the outer ring 320 in the radial direction of the rotor is larger than the dimension of the inner ring 310 in the radial direction of the rotor, so as to improve the overall strength of the outer ring 320, and further improve the fixing effect of the outer ring 320 on the inner ring 310 and the axial stopper pin 400, respectively. Preferably, the size of the outer ring 320 in the radial direction of the rotor is 1.5 times or more the size of the inner ring 310 in the radial direction.
As shown in fig. 1, 8 and 9, the non-magnetic conducting holder 100 includes a plurality of first base materials 1000, and the plurality of first base materials 1000 are stacked and hot-pressed in the axial direction of the rotor to form the non-magnetic conducting holder 100. The non-magnetic cage 100 is conveniently and quickly formed, and the structural strength of the non-magnetic cage 100 is improved.
Referring to fig. 8, the first substrate 1000 has a radial position-limiting portion 1100 and a circumferential position-limiting portion 1200, the radial position-limiting portions 1100 of the plurality of layers of the first substrate 1000 are stacked and hot-pressed to form the radial position-limiting member 110, and the circumferential position-limiting portions 1200 of the plurality of layers of the first substrate 1000 are stacked and hot-pressed to form the circumferential position-limiting member 120. The first base material 1000 may be made of a composite material, and multiple layers of the first base material 1000 are thermally fused, stacked and fixed under a hot press, where the first base material 1000 may have self-adhesive property, or an adhesive is coated between two adjacent layers of the first base material 1000 to achieve thermal fusion stacking.
The radial limiting portion 110 is circular, so that the radial limiting portion 110 is formed by stacking and is cylindrical, and at this time, the magnetic conduction block 210 abuts against the outer side wall of the radial limiting portion 110. The plurality of circumferential limiting parts 1200 are spaced and connected to the outer periphery of the radial limiting part 110, and one side (i.e., the outer side) of the circumferential limiting part 1200 away from the radial limiting part 1100 is arc-shaped, so that the outer side of the circumferential limiting part 120 formed by overlapping is arc-shaped, and the inner ring 310 is annular in shape and is adapted to be installed. An embedding portion 130 for embedding the magnetic conductive block 210 is formed between two adjacent circumferential position-limiting members 120, and referring to fig. 2, the shape of the embedding portion 130 is the same as that of the magnetic conductive block 210.
Referring to fig. 9, the circumferential limiting member 120 has an upper limiting region 1201, a middle recessed region 1202 and a lower limiting region 1203 arranged along the axial direction of the rotor, and the width of the circumferential limiting portion 1200 located in the middle recessed region 1202 is smaller than the width of the circumferential limiting portion 1200 located in the upper limiting region 1202 and the lower limiting region 1203, respectively, so that the middle recessed region 1202 forms the first groove 121.
Specifically, the width of the circumferential limiting portion 1200 refers to the size of the circumferential limiting portion in the circumferential direction of the rotor, and due to the above structure, two sides of the middle recessed area 1202 are recessed inward respectively, so as to form the first grooves 121 respectively disposed on two circumferential sides of the circumferential limiting member 120. It can be seen that the circumferential limiter 120 structure shown in fig. 9 is formed by reducing the width of the circumferential limiter 1200 located in the central recessed area 1202.
More specifically, the width of the circumferential stopper 1200 located in the upper stopper region 1202 is the same as the width of the circumferential stopper 1200 located in the lower stopper region 1203. In addition, the upper limit region 1202 and the lower limit region 1203 have the same size in the rotor axial direction, so that the first groove 121 is maintained at the intermediate position of the circumferential limiter 120 in the rotor axial direction.
As shown in fig. 7, the magnetic block 210 includes a plurality of layers of magnetic conductive sheets 2100 with different sizes, and the plurality of layers of magnetic conductive sheets 2100 are stacked in a manner of increasing size along a radial direction of the rotor to form the magnetic block 210. The plurality of magnetic conductive sheets 2100 are arc-shaped sheets, and the magnetic conductive sheets 2100 may also be made of a composite material, and the magnetic conductive blocks 210 are formed by laminating a plurality of layers of the magnetic conductive sheets 2100 by using viscosity. Make the shaping of magnetic conduction block 210 more convenient and fast through the mode of piling up to a plurality of magnetic conduction pieces 2100 are at the in-process of book system and coincide, and a plurality of magnetic conduction pieces 2100 are connected yoke portion 2200, in order to prevent that it from appearing the discrete phenomenon of magnetic conduction piece 2100 in the book system in-process, and after making magnetic conduction block 210 in the book system stack, the yoke portion 2200 of excision can, it is a plurality of this moment magnetic conduction piece 2100 closely laminates, and is fixed in radial locating part 110 with between the inner ring 310, prevent that magnetic conduction piece 2100 from being discrete, are favorable to developing the industrialization batch production.
The magnetic conductive pieces 2100 have the same size in the axial direction and the radial direction of the rotor, and have a gradually larger size in the circumferential direction of the rotor, so that the magnetic conductive block 210 formed by overlapping is trapezoidal to fit the trapezoidal fitting portion 130. And the two radial ends of the magnetic conductive block 210 are arc-shaped respectively to be adapted to the outer side wall of the radial limiting portion 1100 which is a curved surface, and the annular inner ring 310.
In detail, the magnetic conductive block 210 is overall trapezoidal, and the magnetic conductive block 210 is formed by stacking a plurality of magnetic conductive sheets 2100 with different sizes along the height direction of the trapezoid.
Explaining in more detail, magnetic conductive plate 2100 is the arc structure, the trapezoidal bottom of magnetic conductive block 210 is the arc arch, is close to promptly one side of radial locating part 110 is the arc arch, the trapezoidal top of magnetic conductive block 210 is the arc recess, is close to promptly one side of inner ring 310 is the arc recess, so that both sides of magnetic conductive block 210 can the adaptation be curved radial locating part 110 with inner ring 310. With continued reference to fig. 7, the magnetic conductive plates 2100 are provided with recesses 2110 at two sides along the circumferential direction of the rotor, so that the recesses 2110 on the plurality of magnetic conductive plates 2100 form the second groove 211. The second groove 211 is opened at the trapezoidal side of the magnetic conductive block 210 and penetrates through each magnetic conductive sheet 2100.
In summary, the radial limiting member 110 and the ring assembly 300 are fixed at two radial ends of the magnetic conducting block 210, so as to radially fix the magnetic conducting block 210; the magnetic conductive block 210 is fixed between two adjacent circumferential limiting pieces 120 for circumferential fixing; and utilize axial stop pin 400 with magnetic conduction piece 210 cooperation is in order to prevent magnetic conduction piece 210 from taking place axial displacement, so not only simple structure is novel, effectively promotes magnetic conduction piece 210's fixed effect still, avoids appearing rocking and the phenomenon that drops and influence the rotor performance. In addition, the ring assembly 300 comprises an inner ring 310 and an outer ring 320, which prevent the inner ring 310 from being deformed by stress, and avoid the failure of the radial fixing effect of the inner ring 310 on the magnetic conductive block 210. The non-magnetic-conduction retainer 100 is formed by hot-pressing and laminating a plurality of layers of first base materials 1000, the magnetic conduction blocks 210 are formed by laminating magnetic conduction sheets 2100 with different sizes in a mode of gradually increasing the sizes, the forming is convenient and quick, the industrial batch production of rotors is facilitated, the structure is simple and novel, and the cost is effectively reduced.
As shown in fig. 1 to 11, the method for forming a rotor of a disc motor includes the steps of:
(a) providing a non-magnetic-conduction retainer 100, wherein the non-magnetic-conduction retainer 100 has a radial limiting member 110 and a plurality of circumferential limiting members 120, and the plurality of circumferential limiting members 120 are connected to the radial limiting member 110 at intervals and extend outwards;
(b) providing a magnetic conducting assembly 200, wherein the magnetic conducting assembly 200 has a plurality of magnetic conducting blocks 210 and a yoke 220, and the plurality of magnetic conducting blocks 210 are annularly arranged on the yoke 220 at intervals;
(c) the circumferential limiting piece 120 is embedded between two adjacent magnetic conductive blocks 210 and abuts against the yoke piece 220, so that a limiting channel is formed between the magnetic conductive blocks 210 and the circumferential limiting piece 120;
(d) an inner ring 310 is sleeved outside the magnetic conduction block 210, and the guide holes 311 on the inner ring 310 correspond to the limiting channels one to one;
(e) sequentially penetrating a plurality of axial limiting nails 400 through the guide holes 311 one by one and inserting the axial limiting nails into the limiting channels;
(f) an outer ring 320 is sleeved on the outer side of the inner ring 310 and fixes the axial limit pin 400.
The radial limiting part 110 and the inner ring 310 radially fix the magnetic conducting block 210, and the two adjacent circumferential limiting parts 120 circumferentially fix the magnetic conducting block 210 and axially fix the magnetic conducting block 210 by using the axial limiting nail 400, so as to prevent the magnetic conducting block 210 from axially moving. The forming method of the disc type motor rotor is convenient and rapid, the rotor is effectively prevented from being scrapped due to shaking or falling of the magnetic conduction blocks 210, the performance of the rotor is prevented from being influenced, and the service life is prolonged. According to one embodiment of the present invention, the step (a) further comprises the steps of:
(a1) the plurality of layers of the first base material 1000 are stacked and hot pressed to form the non-magnetic conducting holder 100.
The non-magnetic-conduction holder 100 is formed by overlapping and hot-pressing a plurality of layers of the first base material 1000, and the first base material 1000 can be made of a composite material, so that the non-magnetic-conduction holder 100 is formed more conveniently and quickly, the strength of the non-magnetic-conduction holder 100 is effectively improved, and the supporting and fixing effects of the non-magnetic-conduction holder 100 on the magnetic conduction block 210 are further improved.
Specifically, the first substrate 1000 has a radial limiting portion 1100 and a circumferential limiting portion 1200, and further in the step (a1), the radial limiting portions 1100 of the plurality of layers of the first substrate 1000 are stacked and hot-pressed to form the radial limiting member 110, and the circumferential limiting portions 1200 of the plurality of layers of the first substrate 1000 are stacked and hot-pressed to form the circumferential limiting member 120.
The size and arrangement of the circumferential limiting portion 1200 are designed according to the number of poles of the motor, the size of the magnetic conductive block 210 and other factors.
More specifically, the circumferential limiting member 120 has an upper limiting region 1201, a middle recessed region 1202 and a lower limiting region 1203 which are arranged along the axial direction, and the width of the circumferential limiting portion 1200 located in the middle recessed region 1202 is smaller than the width of the circumferential limiting portion 1200 located in the upper limiting region 1202 and the lower limiting region 1203, respectively, so that the middle recessed region 1202 forms the first groove 121.
The width of the circumferential stopper 1200 in the central recessed area 1202 is determined by the shape of the axial stopper pin 400, and therefore the width of the circumferential stopper 1200 in the central recessed area 1202 may be adjusted according to the shape of the axial stopper pin 400.
The size of the radial limiting part 1100 of the multiple layers of the first base material 1000 is kept unchanged, and the size of the circumferential limiting part 1200 in the circumferential direction of the rotor is changed to form a first groove 121 for clamping the axial limiting nail 400, so that the non-magnetic-conduction holder 100 and the first groove 121 thereon are conveniently formed.
According to one embodiment of the present invention, the step (b) further comprises the steps of:
(b1) stamping the second substrate 2000 by a stamping apparatus;
(b2) the punched second substrate 2000 is rolled at the same angular speed by a rolling apparatus to form the magnetic conductive assembly 200.
The second substrate 2000 continuously transmits to the punching device, the punching device performs punching, and after punching, the second substrate 2000 transmits to the winding device, so that the second substrate 2000 is wound to form the magnetic conducting assembly 200, the magnetic conducting assembly 200 is formed more conveniently and rapidly, and the stability of the structure of the magnetic conducting block 210 is ensured.
Specifically, the second substrate 2000 after stamping has a plurality of magnetic conductive sheets 2100 and a yoke portion 2200, the plurality of magnetic conductive blocks 210 are arranged at the same side of the yoke portion 2200 at intervals, and further in the step (b2), the yoke portion 2200 is rolled to form the yoke 220, and the plurality of magnetic conductive sheets 2100 are rolled one by one to form the plurality of magnetic conductive blocks 210 arranged in a ring shape. The yoke portion 2200 is used for connecting a plurality of the magnetic conductive sheets 2100, enabling the plurality of the magnetic conductive sheets 2100 to be continuously rolled, and then subsequently cutting off the yoke portion 2200.
More specifically, in the process of rolling the second substrate 2000, the plurality of magnetic conductive sheets 2100 are connected to the yoke portion 2200 to prevent the magnetic conductive sheets 2100 from being scattered in the rolling process, and after the magnetic conductive blocks 210 are stacked by rolling, the yoke portion 2200 is cut off, so that the magnetic conductive blocks 210 can be formed more conveniently and rapidly, and the industrial batch production can be facilitated.
Referring to fig. 3 and 10, the stamping apparatus stamps the second substrate 2000 to leave a continuous yoke portion 2200 and magnetic conductive plates 2100 arranged at intervals, and a position for embedding the circumferential position limiter 120 is corresponding between two adjacent magnetic conductive plates 2100.
In addition, the size of each magnetic conduction block 210 is gradually increased along the radial direction of the rotor, so that the stamping area of the stamping device is gradually reduced, and the magnetic conduction blocks 210 are fan-shaped. Taking eight magnetic conductive blocks 210 as an example, the punching device continuously punches the second substrate 2000 for nine times with a first area so that the second substrate 2000 forms eight magnetic conductive sheets 2100 with a first size, then the rolling device rolls the eight magnetic conductive sheets 2100 with the first size, and the eight magnetic conductive blocks 210 are sequentially and continuously arranged in a ring shape, and the punching device continuously punches the second substrate eight times with a second area so that the second substrate 2000 forms eight magnetic conductive sheets 2100 with a second size, then the rolling device rolls the eight magnetic conductive sheets 2100 with the second size outside the eight magnetic conductive sheets 2100 with the first size, and the eight magnetic conductive sheets 2100 are in one-to-one correspondence and are reciprocated in this way, so as to form the magnetic conductive assembly 200 shown in fig. 3.
In detail, the second dimension is larger than the first dimension, which refers to a dimension along the circumferential direction of the rotor, so that the plurality of magnetic conductive pieces 2100 in each magnetic conductive block 210 are overlapped to form the magnetic conductive block 210 along the radial direction of the rotor and in a manner that the circumferential dimension is gradually increased. Since the second size is larger than the first size, the second area is smaller than the first area.
It should be noted that the rolling device rolls the punched second substrate 2000 at the same angular speed, so that the plurality of magnetic conductive pieces 2100 of each magnetic conductive block 210 can correspond to each other one by one, and the influence of displacement deviation on the forming effect of the magnetic conductive block 210 is prevented.
As shown in fig. 3 and 10, the magnetic conductive plate 2100 has a recess 2110 thereon, and further in the structure of each magnetic conductive block 210, the recess 2110 on the plurality of magnetic conductive plates 2100 forms a second groove 211, and the second groove 211 and the first groove 121 form a limiting channel opposite to each other.
Since the second groove 211 and the first groove 121 constitute a stopper passage, the size of the second groove 211 is determined according to the size of the axial stopper pin 400.
Note that, a plurality of layers of the first base material 1000 are stacked in the axial direction of the rotor, and the second base material 2000 is rolled around the axial direction of the rotor.
According to one embodiment of the present invention, the step (f) further comprises the steps of:
the fiber tows are wrapped around the outside of the inner ring 310 and cured with a binder to form the fiber tows into the outer ring 320.
According to an embodiment of the present invention, the method further comprises the following steps between the steps (e) and (f):
the yoke 220 is removed to obtain a disc motor rotor. The yoke 220 may be cut out by a wire cutting or grinding machine, etc. to form a disk motor rotor structure as shown in fig. 1, in which the non-magnetic-conductive holder 100, the magnetic conductive blocks 210, the inner ring 310 and the outer ring 320 have the same dimension in the rotor axial direction, and the disk motor rotor has a thin axial dimension to be suitable for installation in a thin installation space.
According to an embodiment of the present invention, the step (f) further comprises the steps of:
and integrally polishing and magnetizing the disc type motor rotor. The flatness of the rotor is improved by grinding.
In summary, the forming method of the disc type motor rotor is convenient and fast, the rotor is effectively prevented from being scrapped due to shaking or falling off of the magnetic conduction block 210, the performance of the rotor is prevented from being influenced, and the service life is further prolonged. The non-magnetic-conduction holder 100 is formed by overlapping and hot-pressing a plurality of layers of the first base material 1000, and the first base material 1000 can be made of a composite material, so that the non-magnetic-conduction holder 100 is formed more conveniently and quickly, the strength of the non-magnetic-conduction holder 100 is effectively improved, and the supporting and fixing effects of the non-magnetic-conduction holder 100 on the magnetic conduction block 210 are further improved. Magnetic conduction subassembly 200 utilizes second substrate 2000, and under the effect of stamping equipment and book equipment and the shaping is rolled up in the punching press, then get rid of yoke 220 can, make magnetic conduction subassembly 200's shaping convenient and fast more, and guarantee simultaneously the stability of magnetic conduction piece 210 structure, at the in-process that second substrate 2000 was rolled up, yoke portion 2200 is connected to a plurality of magnetic conduction pieces 2100, prevents that magnetic conduction piece 2100 from appearing the discrete phenomenon at the book system in-process to stack into magnetic conduction piece 210 after rolling up, excision yoke portion 2200 can, make magnetic conduction piece 210's shaping convenient and fast more, and be favorable to developing industrialization batch production. The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the scope of the present invention is not limited by the embodiments, i.e. all equivalent changes or modifications made in the spirit of the present invention are still within the scope of the present invention.
Claims (10)
1. A disc motor rotor, comprising:
the non-magnetic-conduction retainer (100) is provided with a radial limiting piece (110) and a plurality of circumferential limiting pieces (120), and the circumferential limiting pieces (120) are connected with the radial limiting piece (110) at intervals and extend outwards;
the magnetic conduction assembly (200) is provided with a plurality of magnetic conduction blocks (210), each magnetic conduction block (210) is kept between two adjacent circumferential limiting pieces (120), and the magnetic conduction blocks (210) are abutted with the circumferential limiting pieces (120) to form a limiting channel;
the ring assembly (300) is sleeved outside the magnetic conduction block (210), and the magnetic conduction block (210) is abutted and fixed between the radial limiting piece (110) and the ring assembly (300);
a plurality of axial restraining pins (400), each of the axial restraining pins (400) being retained within one of the restraining channels.
2. The disc motor rotor as claimed in claim 1, wherein the circumferential limiting member (120) defines a first groove (121), the magnetic block (210) defines a second groove (211), and when the magnetic block (210) abuts against the circumferential limiting member (120), the first groove (121) and the second groove (211) are opposite to each other and form the limiting channel.
3. The disc motor rotor as recited in claim 2, wherein the magnetic conductive block (210) is overall trapezoidal, the magnetic conductive block (210) is formed by stacking a plurality of magnetic conductive sheets (2100) with different sizes along a height direction of the trapezoid, and the second groove (211) is opened at a side of the trapezoid and penetrates through each magnetic conductive sheet (2100).
4. The disc motor rotor as recited in claim 3, wherein the magnetic conductive sheet (2100) has an arc-shaped structure, the bottom of the trapezoid of the magnetic conductive block (210) has an arc-shaped protrusion, and the top of the trapezoid of the magnetic conductive block (210) has an arc-shaped groove.
5. A disc motor rotor, according to claim 1, characterised in that said axial restraining pin (400) is inserted in said ring assembly (300).
6. The disc motor rotor as claimed in claim 5, wherein the ring assembly (300) includes an inner ring (310), the inner ring (310) having a plurality of guide holes (311), each of the guide holes (311) being opposite to one of the stopper passages, and the axial stopper pin (400) being inserted into the stopper passage through the guide hole (311).
7. The disc motor rotor as recited in claim 6, wherein the ring assembly (300) further comprises an outer ring (320), the outer ring (320) is sleeved outside the inner ring (310) and fixes the axial stopper pin (400).
8. The disc motor rotor as set forth in claim 7, characterized in that said axis limiter (400) is fixed in abutment between said radial limiter (110) and said outer ring (320).
9. The disc motor rotor as recited in claim 8, characterized in that the outer ring (320) comprises at least one fiber tow wound outside the inner ring (310) and cured with a binder to form the outer ring (320).
10. The disc motor rotor as recited in claim 1, characterized in that the non-magnetic conducting cage (100) comprises a plurality of layers of first base material (1000), the plurality of layers of first base material (1000) are stacked and hot pressed in the axial direction of the rotor to form the non-magnetic conducting cage (100).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894707.1A CN113572286A (en) | 2021-08-05 | 2021-08-05 | Disc type motor rotor |
| PCT/CN2021/118745 WO2023010653A1 (en) | 2021-08-05 | 2021-09-16 | Disk type electric motor rotor, forming method and double-air-gap electric motor rotor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894707.1A CN113572286A (en) | 2021-08-05 | 2021-08-05 | Disc type motor rotor |
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| CN113572286A true CN113572286A (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110894707.1A Pending CN113572286A (en) | 2021-08-05 | 2021-08-05 | Disc type motor rotor |
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| CN114285199A (en) * | 2021-12-27 | 2022-04-05 | 浙江盘毂动力科技有限公司 | Reluctance type axial flux motor rotor and forming method |
| CN115360853A (en) * | 2022-10-20 | 2022-11-18 | 华驰动能(北京)科技有限公司 | Energy storage flywheel, disc type motor assembly and energy storage equipment |
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