CN113941661B - Method for forming rotor disc of disc type switch reluctance motor - Google Patents
Method for forming rotor disc of disc type switch reluctance motor Download PDFInfo
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- CN113941661B CN113941661B CN202111201310.6A CN202111201310A CN113941661B CN 113941661 B CN113941661 B CN 113941661B CN 202111201310 A CN202111201310 A CN 202111201310A CN 113941661 B CN113941661 B CN 113941661B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 250
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 22
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a forming method of a rotor disc of a disc-type switch reluctance motor, which comprises the steps of providing a silicon steel disc, wherein the silicon steel disc comprises a disc body and a connecting body, the disc body is wound by continuous silicon steel sheets and is provided with a plurality of layers of silicon steel sheets which are arranged along the radial direction, and the connecting body is connected with the plurality of layers of silicon steel sheets which are arranged along the radial direction; cutting the silicon steel disc along the circumferential direction to form a plurality of silicon steel blocks, and reserving the connecting bodies on the two axial end faces of each silicon steel block; providing a retainer, wherein the retainer comprises a circular plate and a supporting plate; placing the silicon steel blocks between two adjacent support plates in a mode that two axial end surfaces of the silicon steel blocks are axially arranged along the retainer; the sleeve is sleeved with a limiting ring at the outer periphery of the supporting plate; the connectors on the two axial end surfaces of the silicon steel block are removed, so that each layer of silicon steel sheet of the silicon steel block is insulated, the motor is prevented from generating vortex during working, the motor is low in efficiency and overlarge in heating, the problems of how the silicon steel sheet is molded and turned into a retainer, radial limiting and the like are solved, and the manufacturability of the motor is realized.
Description
Technical Field
The invention relates to the field of disc type switch reluctance motors, in particular to a forming method of a rotor disc of a disc type switch reluctance motor.
Background
The switch reluctance motor is used as a component for realizing energy conversion in an electric drive system, and has the advantages of firm structure, low cost, strong fault tolerance, high starting torque and the like. The disc type switch reluctance motor further has the advantages of short axial length, higher power density and the like, so that the disc type switch reluctance motor is suitable for occasions with strict axial space requirements.
In the prior art, a disc switch reluctance motor generally adopts silicon steel sheets as rotor and stator lamination materials, and in the forming process of a rotor silicon steel block, the silicon steel block is trapezoidal, so that the silicon steel sheets with different shapes and sizes are required to be obtained by stamping through a stamping die, and the silicon steel sheets are laminated according to a mode of gradually increasing the size to form a trapezoidal silicon steel block, which has the following defects:
first, the silicon steel sheet of each shape and size is required to be corresponding to a stamping die, which causes an increase in manufacturing cost.
Secondly, the silicon steel sheets with various different shapes and sizes are required to be arranged and laminated according to a designated sequence, so that the assembly difficulty is increased, and the production efficiency is reduced.
Thirdly, burrs are easily generated when the silicon steel sheets are formed through stamping, insulation between the silicon steel sheets is affected, electric energy loss caused by electric vortex is caused, and even the working efficiency of the motor is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a forming method of a rotor disc of a disc-type switch reluctance motor, which has low production cost, effectively reduces the eddy current loss of the motor and realizes manufacturability, and is convenient for industrial mass production.
The invention provides a forming method of a rotor disc of a disc type switch reluctance motor, which comprises the following steps:
(a) Providing a silicon steel disc, wherein the silicon steel disc comprises a disc body and a plurality of connectors, the disc body is wound by continuous silicon steel sheets and is provided with a plurality of layers of silicon steel sheets which are arranged along the radial direction, and the connectors are connected with the plurality of layers of silicon steel sheets which are arranged along the radial direction and are respectively positioned at two axial end surfaces of the disc body;
(b) Cutting the silicon steel disc along the circumferential direction to form a plurality of silicon steel blocks, and reserving the connecting bodies on two axial end surfaces of each silicon steel block;
(e) Providing a retainer, wherein the retainer comprises a circular plate and a plurality of supporting plates, and the supporting plates are connected to the outer periphery of the circular plate at intervals;
(f) Placing the silicon steel blocks between two adjacent support plates in a mode that two axial end surfaces of the silicon steel blocks are axially arranged along the retainer;
(g) A limiting ring is sleeved on the outer periphery of the supporting plate so that the silicon steel block is fixed between the circular plate and the limiting ring;
(h) And removing the connectors on the two axial end surfaces of the silicon steel block so as to insulate each layer of silicon steel sheet of the silicon steel block.
As a preferred technical solution, the step (a) further includes the following steps:
(a1) Winding a continuous sheet of silicon steel to form the disc body;
(a2) And welding a plurality of connecting bodies on two axial end surfaces of the disc body so as to connect a plurality of layers of silicon steel sheets which are arranged along the radial direction.
As a preferred technical solution, after the step (h), further includes:
(j) And chemically treating the silicon steel blocks to remove the two axial end surfaces of the connecting body.
As a preferred embodiment, the method further comprises the following steps between the step (b) and the step (e):
(c) And respectively processing two circumferential sides of the silicon steel block to form an inwards concave silicon steel guide part.
As a preferred technical solution, the method further comprises the following steps between the step (c) and the step (e):
(d) And chemically treating the silicon steel blocks to form two circumferential sides of the silicon steel guide part.
As a preferable technical solution, the distance between the two axial end surfaces of the silicon steel block is larger than the axial dimension of the retainer, so that in the step (f), the two axial end surfaces of the silicon steel block protrude outwards from the two axial end surfaces of the retainer.
As a preferable embodiment, the holder is formed by laminating a base material, the base material has a circular plate portion and a plurality of support plate portions, and the step (e) further includes the steps of:
(e1) And a plurality of layers of the circular plate parts are overlapped to form the circular plate, and a plurality of layers of the supporting plate parts are overlapped to form the supporting plate.
As a preferred technical solution, the support plate has an upper zone, a middle zone and a lower zone axially aligned along the cage, the circumferential dimensions of the support plate portions located in the middle zone being respectively greater or less than the circumferential dimensions of the support plate portions located in the upper zone and the lower zone, so that the middle zone forms a support guide portion cooperating with the silicon steel guide portion.
As a preferred embodiment, the chemical treatment comprises acid washing.
As a preferred technical solution, after the step (j), further includes:
and (3) performing rust prevention treatment on the two axial end surfaces of the silicon steel block subjected to chemical treatment.
Compared with the prior art, the technical scheme has the following advantages:
the disc body is formed by winding continuous silicon steel sheets, a plurality of connecting bodies are connected to two axial end surfaces of the disc body to form the silicon steel disc, wherein multiple layers of silicon steel sheets which are arranged along the radial direction of the disc body are connected by the connecting bodies and are not scattered, so that the silicon steel sheets are cut in the step (b) to form a plurality of silicon steel blocks, at the moment, the silicon steel blocks keep the connecting bodies on the two axial end surfaces of the silicon steel blocks, namely the silicon steel blocks are cut to form the silicon steel blocks and are not scattered, then the silicon steel blocks, the retainer and the limiting rings are assembled into a whole, the connecting bodies on the two axial end surfaces of the silicon steel blocks are removed, and the two axial end surfaces of the silicon steel blocks from which the connecting bodies are removed are subjected to chemical treatment to remove burrs and the like, so that the processing surfaces of the silicon steel sheets are not connected with each other, and each layer of the silicon steel sheets of the silicon steel blocks are insulated. Compared with the prior art, the stamping die with different specifications is required to be provided, the forming efficiency is effectively improved, the cost is reduced, the motor is prevented from generating vortex during working, the motor is low in efficiency and overlarge in heating, the problems that how to form a silicon steel sheet is transferred into a retainer, radial limiting and the like are solved, and the manufacturability of the motor is realized. The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a method of forming a rotor disk of a disk-type switched reluctance motor according to the present invention;
FIG. 2 is a schematic view of a rotor disk according to the present invention;
FIG. 3 is a schematic view of a silicon steel plate according to the present invention;
FIG. 4 is a schematic view of a silicon steel disc cut according to the present invention;
FIG. 5 is a schematic view of a silicon steel block according to the present invention;
FIG. 6 is a schematic view of the structure of the cage according to the present invention;
FIG. 7 is a schematic view of a substrate according to the present invention;
FIG. 8 is a schematic view of the assembly process of the retainer, silicon steel block and stop collar of the present invention;
fig. 9 is a schematic view of the assembled retainer, silicon steel block and stop collar of the present invention.
In the figure: 100 retainers, 110 circular plates, 120 supporting plates, 121 supporting guide parts, 1000 base materials, 1100 circular plate parts, 1200 supporting plate parts, 1201 upper areas, 1202 middle areas, 1203 lower areas, 200 silicon steel blocks, 210 silicon steel guide parts, 2000 silicon steel plates, 2001 plate bodies, 2002 connecting bodies, 20011 waste materials and 300 limiting rings.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention 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. 2, the rotor disc of the disc-type switched reluctance motor comprises a retainer 100, a plurality of silicon steel blocks 200 and a limiting ring 300, wherein the retainer 100 comprises a circular plate 110 and a plurality of support plates 120, the support plates 120 are connected to the outer periphery of the circular plate 110 at intervals, one silicon steel block 200 is installed between two adjacent support plates 120, and the limiting ring 300 is sleeved on the outer periphery of the support plates 120 so as to fix the silicon steel blocks 200. Wherein the circular plate 110 and the stop collar 300 are disposed on two radial sides of the silicon steel block 200 to achieve radial fixation. The support plates 120 are disposed at both sides of the silicon steel block 200 in the circumferential direction to perform circumferential fixation. Referring to fig. 5 and 6, silicon steel guide portions 210 are respectively disposed at two circumferential sides of the silicon steel block 200, support guide portions 121 engaged with the silicon steel guide portions 210 are respectively disposed at two circumferential sides of the support plate 120, and the silicon steel guide portions 210 and the support guide portions 121 are engaged to perform axial fixation. This achieves axial, circumferential and radial fixation of the silicon steel block 200.
The axial two sides of the rotor disc are flush, that is, the axial dimensions of the retainer 100, the silicon steel block 200 and the stop collar 300 are identical and smaller, so that the rotor disc with a disc-shaped structure is assembled.
With continued reference to fig. 2 and 5, the space defined between two adjacent support plates 120 is identical to the shape of the silicon steel block 200, so that two circumferential sides of the silicon steel block 200 respectively abut against the support plates 120 at two sides, thereby achieving circumferential fixation. Specifically, the silicon steel block 200 is trapezoidal, the trapezoid top of the silicon steel block 200 abuts against the circular plate 110, the trapezoid bottom of the silicon steel block 200 abuts against the limiting ring 300, and the trapezoid two waists of the silicon steel block 200 abut against the supporting plates 120 on two sides respectively.
More specifically, a plurality of silicon steel sheets forming the silicon steel block 200 are stacked, which are arranged in a radial direction and are gradually larger in size. The silicon steel sheet is arc-shaped, namely the top of the trapezoid of the silicon steel block 200 is an arc-shaped groove, and the bottom of the trapezoid of the silicon steel block 200 is an arc-shaped protrusion.
A method for forming a rotor disc of the disc-type switched reluctance motor will be described in detail with reference to fig. 1 to 9, wherein the method includes:
(a) Providing a silicon steel disc 2000, wherein the silicon steel disc 2000 comprises a disc body 2001 and a plurality of connectors 2002, the disc body 2001 is wound by continuous silicon steel sheets and is provided with a plurality of layers of silicon steel sheets which are arranged in the radial direction, and the connectors 2002 are connected with the plurality of layers of silicon steel sheets which are arranged in the radial direction and are respectively positioned at two axial end faces of the disc body 2001;
(b) Cutting the silicon steel disc 2000 circumferentially to form a plurality of silicon steel blocks 200, and retaining the connecting bodies 2002 on both axial end surfaces of each silicon steel block 200;
(e) Providing a retainer 100, wherein the retainer 100 comprises a circular plate 110 and a plurality of support plates 120, and the plurality of support plates 120 are connected to the outer periphery of the circular plate 110 at intervals;
(f) Placing the silicon steel blocks 200 between two adjacent support plates 120 in a manner that two axial end surfaces of the silicon steel blocks 200 are axially aligned along the retainer 100;
(g) Sleeving a limiting ring 300 on the outer periphery of the supporting plate 120, so that the silicon steel block 200 is fixed between the circular plate 110 and the limiting ring 300;
(h) The connectors 2002 on the two axial end surfaces of the silicon steel block 200 are removed to insulate each silicon steel sheet of the silicon steel block 200.
The disc body 2001 is formed by winding a continuous silicon steel sheet, and a plurality of the connectors 2002 are connected to both axial end surfaces of the disc body 2001 to form the silicon steel disc 2000, wherein a plurality of layers of the silicon steel sheets arranged in a radial direction of the disc body 2001 are connected by the connectors 2002 without being separated, so that the silicon steel blocks 200 are cut to form a plurality of the silicon steel blocks 200 in the step (b), at this time, the silicon steel blocks 200 remain the connectors 2002 to both axial end surfaces of the silicon steel blocks 200, that is, the silicon steel blocks 200 are cut to form the same, and then the silicon steel blocks 200, the retainer 100 and the retainer 300 are assembled in one body, and the connectors 2002 on both axial end surfaces of the silicon steel blocks 200 are removed to insulate each layer of the silicon steel sheets of the silicon steel blocks 200. Compared with the prior art, the stamping die with different specifications is required to be provided, the forming efficiency is effectively improved, the cost is reduced, the electric energy loss caused by the eddy current due to the short circuit between the silicon steel sheets is prevented, and the working efficiency of the motor is further improved.
Said step (a) comprises: a silicon steel disc 2000 is provided, the silicon steel disc 2000 comprises a disc body 2001 and a plurality of connectors 2002, the disc body 2001 is wound by continuous silicon steel sheets and is provided with a plurality of layers of silicon steel sheets which are arranged in the radial direction, and the connectors 2002 are connected with the plurality of layers of silicon steel sheets which are arranged in the radial direction and are respectively positioned at two axial end faces of the disc body 2001.
The plate body 2001 is annular and has two axial end surfaces, and the connectors 2002 are respectively positioned on the two axial end surfaces of the plate body 2001 to connect a plurality of layers of silicon steel sheets arranged along the radial direction.
On an axial end face of each of the disc bodies 2001, the connection body 2002 extends from an annular inner periphery of the disc body 2001 to an annular outer periphery of the disc body 2001, and a plurality of the connection bodies 2002 are arranged at intervals. The gaps between two adjacent connectors 2002 are smaller, the width of each connector 2002 is larger, and the connecting effect of each connector 2002 on a plurality of silicon steel sheets is improved. Preferably, the width of the connector 2002 refers to the dimension of the connector 2002 along the circumferential direction of the ladders 2001, which is 7 times or more the gap between two adjacent connectors 2002.
In one embodiment, two of the connectors 2002 on the axial end face of the disc body 2001 are disposed in a one-to-one correspondence.
In another embodiment, two of the connectors 2002 on the axial end face of the disc body 2001 are staggered.
Said step (a) further comprises the steps of:
(a1) Winding a continuous silicon steel sheet to form the disc body 2001;
(a2) A plurality of the connectors 2002 are welded to both axial end surfaces of the disc body 2001 to connect a plurality of layers of silicon steel sheets arranged in the radial direction.
In the step (a 1), a continuous and uniform-width silicon steel sheet is wound to form the disc body 2001 of a disc-like structure, and winding is more convenient and quick with respect to a process of punching a lamination sheet, referring to fig. 2.
In the step (a 2), the connector 2002 is sequentially placed on the axial end face of the disc body 2001, and the connector 2002 is welded to a plurality of layers of silicon steel sheets arranged in the radial direction by adopting a laser welding mode, so that the connection between the plurality of layers of silicon steel sheets is realized, and the silicon steel sheets are prevented from being scattered, so that the silicon steel block 200 is formed by subsequent cutting. The connector 2002 may be a welding rod.
The radial dimension of the disc body 2001 is determined by the number of layers of the silicon steel sheet wound, and the circumferential dimension of the disc body 2001 is determined by the thickness of the silicon steel sheet. And the overall size of the disc body 2001 is designed according to the number and size of the silicon steel blocks 200.
Said step (b) comprises: the silicon steel plate 2000 is cut in a circumferential direction to form a plurality of silicon steel blocks 200, and the connector 2002 is left on both axial end surfaces of each silicon steel block 200.
The silicon steel plate 2000 may be positioned by using an inner circumference and an outer circumference of the silicon steel plate 2000, and then the silicon steel plate 2000 may be cut by using a laser or a wire cutting method, thereby obtaining the silicon steel block 200, referring to fig. 3.
The cutters are respectively perpendicular to the two axial end surfaces of the silicon steel block 200 to cut, so as to keep the connecting body 2002 on the two axial end surfaces of the silicon steel block 200, and prevent the silicon steel sheets forming the silicon steel block 200 from separating, as shown in fig. 3 and 4, wherein a plurality of silicon steel blocks 200 can be formed along the circumferential direction by feeding once, thereby improving the forming efficiency of the silicon steel block 200. As shown in fig. 4, the silicon steel plate 2000 removes the silicon steel block 200, leaving scrap 20011.
As shown in fig. 4 and 5, the silicon steel block 200 has a trapezoid shape, and the silicon steel sheets forming the silicon steel block 200 are arranged along the height of the trapezoid and become larger in size. The silicon steel sheet is the arc, silicon steel piece 200 trapezoidal top is the arc recess, silicon steel piece 200 trapezoidal bottom is the arc arch.
In one embodiment, the silicon steel disc 2000 is cut to form a plurality of silicon steel blocks 200, which may correspondingly form a rotor disc. I.e. the number of cut silicon steel blocks 200 corresponds to the number of silicon steel blocks 200 required for the rotor disc.
In another embodiment, the silicon steel disk 2000 is cut to form a number of silicon steel pieces 200 that is greater than the number of silicon steel pieces 200 required for the rotor disk.
Further comprising the steps of, between said step (b) and said step (e):
(c) The silicon steel block 200 is processed at both sides in the circumferential direction to form the inwardly recessed silicon steel guide 210.
The silicon steel guide 210 is configured to cooperate with the support guide 121 on the support plate 120 to prevent the silicon steel block 200 from being axially displaced.
As shown in fig. 5, the silicon steel guide 210 extends from the top of the silicon steel block trapezoid to the bottom of the silicon steel block trapezoid, i.e., through all the silicon steel plates constituting the silicon steel block 200. The silicon steel guide 210 is located approximately at the middle of the two axial end surfaces of the silicon steel block 200.
Further comprising the steps of, between said step (c) and said step (e):
(d) The silicon steel block 200 is chemically treated to form both circumferential sides of the silicon steel guide 210.
Especially, the silicon steel guide 210 is processed to remove burrs and the like formed by the processing, so as to prevent the processing surfaces of the silicon steel sheets from being connected with each other, further ensure the interlayer insulation of the silicon steel sheets, prevent the electric energy loss caused by the eddy current, and further improve the working efficiency and manufacturability of the motor. The chemical treatment includes acid washing with a chemical agent (a medium strong acid), and the like.
Said step (e) comprises: a cage 100 is provided, wherein the cage 100 includes a circular plate 110 and a plurality of support plates 120, and the plurality of support plates 120 are connected to the outer circumference of the circular plate 110 at intervals.
The space defined between two adjacent support plates 120, which is identical to the shape of the silicon steel block 200, has a trapezoid shape. It should be noted that the axial dimension of the retainer 100 is greater than the distance between the two axial end surfaces of the silicon steel block 200, so that in the step (f), the two axial end surfaces of the silicon steel block 200 protrude outward from the two axial end surfaces of the retainer 100, and reference is made to fig. 9, so that the protruding portion is cut, that is, the connecting body 2002 is cut in the step (h).
The holder 100 is an integrally formed holder, specifically, as shown in fig. 6 and 7, the holder 100 is formed by stacking a base material 1000, the base material 1000 may be made of glass fiber, the base material 1000 has a circular plate portion 1100 and a plurality of support plate portions 1200 which are integrally formed, and the step (e) further includes the steps of:
(e1) The disk 110 is formed by stacking a plurality of disk portions 1100, and the support plate 120 is formed by stacking a plurality of support plate portions 1200.
As shown in fig. 6, support guides 121 are respectively provided at both sides of the support plate 120 in the circumferential direction, and the support guides 121 extend from the outer circumference of the support plate 120 to the inner circumference where the support plate 120 is connected to the circular plate 110. The supporting guide 121 may have a bump structure and be embedded in the silicon steel guide 210. Of course, the supporting guide 121 may also have a concave structure, which is opposite to the silicon steel guide 210, and is fixed axially by passing steel nails through the opposite supporting guide 121 and the silicon steel guide 210. The following description will be given by taking the support guide 121 having a bump structure as an example, and the forming process thereof will be described:
referring to fig. 6, the support plate 120 has an upper region 1201, a middle region 1202, and a lower region 1203 arranged along the axial direction of the holder 100, and the circumferential dimensions of the support plate 1200 at the middle region 1202 are larger than those of the support plate 1200 at the upper region 1201 and the lower region 1202, respectively, so that the middle region 1202 forms a support guide 121 engaged with the silicon steel guide 210, and the support guide 121 is in a bump structure.
When the circumferential dimension of the support plate portion 1200 in the middle area 1202 is smaller than the circumferential dimension of the support plate portion 1200 in the upper area 1201 and the lower area 1202, respectively, the support guide portion 121 formed in the middle area 1202 has a concave structure.
Said step (f) comprises: the silicon steel block 200 is placed between two adjacent support plates 120 in such a manner that both axial end surfaces of the silicon steel block 200 are axially aligned along the holder 100, referring to fig. 8.
The silicon steel guide portions 210 are engaged with the support guide portions 121 to insert the silicon steel block 200 between two adjacent support plates 120, and the two axial end surfaces of the silicon steel block 200 are axially aligned along the holder 100 and protrude from the two axial end surfaces of the holder 100, as the silicon steel guide portions 210 are located at two circumferential sides of the silicon steel block 200, as shown in fig. 9.
Specifically, the two sides of the silicon steel block 200 in the circumferential direction may be coated with glue, and then installed between two adjacent support plates 120 to enhance the fixing effect.
Said step (g) comprises: a limiting ring 300 is sleeved on the outer periphery of the supporting plate 120, so that the silicon steel block 200 is fixed between the circular plate 110 and the limiting ring 300, refer to fig. 8. To prevent the silicon steel block 200 from being thrown radially and to overcome the centrifugal force.
The stop collar 300 is formed by winding fiber, preferably carbon fiber.
Said step (h) comprises: the connectors 2002 on the two axial end surfaces of the silicon steel block 200 are removed to insulate each layer of silicon steel sheet of the silicon steel block 200, referring to fig. 2 and 9.
The connector 2002 may be removed by laser or wire cutting while ensuring that the silicon steel block 200 is flush with both axial sides of the cage 100 after cutting.
After said step (h) further comprises:
(j) The silicon steel block 200 is chemically treated to remove the two axial end surfaces of the connector 2002.
The chemical treatment can be acid washing and the like to remove burrs and the like, each layer of silicon steel sheet is insulated, vortex is avoided, and the working performance of the motor is further affected.
After said step (j) further comprises:
and cleaning and rust-preventing the two axial end surfaces of the chemically treated silicon steel block 200, thereby prolonging the service life of the rotor disk.
In summary, the disc body 2001 is formed by winding a continuous silicon steel sheet, and a plurality of the connectors 2002 are connected to both axial end surfaces of the disc body 2001 to form the silicon steel disc 2000, wherein a plurality of layers of the silicon steel sheets arranged in a radial direction of the disc body 2001 are connected by the connectors 2002 without being separated, so that the silicon steel sheet 200 is cut to form a plurality of the silicon steel blocks 200 in the step (b), at this time, the silicon steel block 200 remains the connectors 2002 on both axial end surfaces of the silicon steel block 200, that is, the silicon steel block 200 is cut to form the silicon steel block 200 without being separated, and then the silicon steel block 200, the retainer 100 and the stop collar 300 are assembled together, and the connectors 2002 on both axial end surfaces of the silicon steel block 200 are removed, and the both axial end surfaces of the silicon steel block 200 from which the connectors 2002 are removed are subjected to chemical treatment to remove burrs or the like, so that the processed surfaces of the silicon steel sheets are not connected to each other, thereby insulating each layer of the silicon steel sheet of the silicon steel block 200. Compared with the prior art, the stamping die with different specifications is required to be provided, the forming efficiency is effectively improved, the cost is reduced, the motor is prevented from generating vortex during working, the motor is low in efficiency and overlarge in heating, the problems that how to form a silicon steel sheet is transferred into a retainer, radial limiting and the like are solved, and the manufacturability of the motor is realized.
The above-described embodiments are only for illustrating the technical spirit and features of the present invention, and it is intended to enable those skilled in the art to understand the content of the present invention and to implement it accordingly, and the scope of the present invention as defined by the present embodiments should not be limited only by the present embodiments, i.e. equivalent changes or modifications made in accordance with the spirit of the present invention will still fall within the scope of the present invention.
Claims (10)
1. A method of forming a rotor disk for a disk-type switched reluctance motor, comprising:
(a) Providing a silicon steel disc (2000), wherein the silicon steel disc (2000) comprises a disc body (2001) and a plurality of connecting bodies (2002), the disc body (2001) is wound by continuous silicon steel sheets and is provided with a plurality of layers of silicon steel sheets which are arranged in the radial direction, and the connecting bodies (2002) are connected with the plurality of layers of silicon steel sheets which are arranged in the radial direction and are respectively positioned at two axial end surfaces of the disc body (2001);
(b) Circumferentially cutting the silicon steel disc (2000) to form a plurality of silicon steel blocks (200), and reserving the connecting bodies (2002) on two axial end surfaces of each silicon steel block (200);
(e) Providing a retainer (100), wherein the retainer (100) comprises a circular plate (110) and a plurality of supporting plates (120), and the supporting plates (120) are connected to the outer periphery of the circular plate (110) at intervals;
(f) Placing the silicon steel blocks (200) between two adjacent support plates (120) in a mode that two axial end surfaces of the silicon steel blocks (200) are axially arranged along the retainer (100);
(g) A limit ring (300) is sleeved on the outer periphery of the supporting plate (120) so that the silicon steel block (200) is fixed between the circular plate (110) and the limit ring (300);
(h) Removing connectors (2002) on two axial end surfaces of the silicon steel block (200) so as to insulate each layer of silicon steel sheet of the silicon steel block (200);
(j) And chemically treating the two axial end surfaces of the silicon steel block (200) after the connecting body is removed.
2. The method of forming a rotor disc for a disc-type switched reluctance motor according to claim 1, wherein the step (a) further comprises the steps of:
(a1) Winding a continuous sheet of silicon steel to form the disc body (2001);
(a2) A plurality of the connectors (2002) are welded to both axial end faces of the disc body (2001) to connect a plurality of layers of silicon steel sheets arranged in the radial direction.
3. The method of forming a rotor disc for a disc-type switched reluctance motor according to claim 1, further comprising the steps of, between the step (b) and the step (e):
(c) The silicon steel block (200) is processed at both sides in the circumferential direction to form an inwardly recessed silicon steel guide portion (210).
4. A method of forming a rotor disc for a disc-type switched reluctance machine as claimed in claim 3, further comprising the steps of, between said step (c) and said step (e):
(d) The silicon steel block (200) is chemically treated to form both circumferential sides of the silicon steel guide (210).
5. A method of forming a rotor disc for a disc-type switched reluctance motor according to claim 3, wherein the holder (100) is laminated by a base material (1000), the base material (1000) having a circular plate portion (1100) and a plurality of support plate portions (1200), and the step (e) further comprises the steps of:
(e1) The disk (110) is formed by stacking a plurality of disk parts (1100), and the support plate (120) is formed by stacking a plurality of support plate parts (1200).
6. A method of forming a rotor disc for a disc-type switched reluctance motor according to claim 5, wherein the support plate (120) has an upper region (1201), a middle region (1202) and a lower region (1203) axially aligned along the holder (100), and a support plate portion (1200) located in the middle region (1202) has a circumferential dimension larger than that of the support plate portion (1200) located in the upper region (1201) and the lower region (1202) so that the middle region (1202) forms a support guide portion (121) that cooperates with the silicon steel guide portion (210), the support guide portion (121) having a bump structure.
7. A method of forming a rotor disc of a disc-type switched reluctance motor according to claim 5, wherein the support plate (120) has an upper region (1201), a middle region (1202) and a lower region (1203) arranged axially along the holder (100), and the support guide (121) formed by the middle region (1202) is in a recessed configuration when the circumferential dimension of the support plate portion (1200) located in the middle region (1202) is smaller than the circumferential dimension of the support plate portion (1200) located in the upper region (1201) and the lower region (1202);
the support guide part (121) with the concave structure is opposite to the silicon steel guide part (210), and the steel nails penetrate through the opposite support guide part (121) and the silicon steel guide part (210) to be axially fixed.
8. The method of forming a rotor disc for a disc-type switched reluctance motor according to claim 1, wherein a distance between both axial end surfaces of the silicon steel block (200) is greater than an axial dimension of the holder (100), and further in the step (f), both axial end surfaces of the silicon steel block (200) protrude outward from both axial end surfaces of the holder (100).
9. A method of forming a rotor disc for a disc-type switched reluctance machine as claimed in claim 1 or 4, wherein said chemical treatment comprises acid washing.
10. The method of forming a rotor disc for a disc-type switched reluctance motor according to claim 1, further comprising, after the step (j):
and (3) performing rust prevention treatment on the two axial end surfaces of the silicon steel block (200) subjected to chemical treatment.
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| CN202111201310.6A CN113941661B (en) | 2021-10-15 | 2021-10-15 | Method for forming rotor disc of disc type switch reluctance motor |
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| CN202111201310.6A CN113941661B (en) | 2021-10-15 | 2021-10-15 | Method for forming rotor disc of disc type switch reluctance motor |
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