A rotor tooth of an axial magnetic field motor and a manufacturing method thereof

Abstract

The present invention provides a rotor tooth of an axial magnetic field motor and a manufacturing method thereof, wherein the rotor tooth comprises a laminated assembly and at least one insulating sleeve, wherein the laminated assembly is formed by laminating a plurality of silicon steel sheets of different widths, and the insulating sleeve is engaged with the periphery of the laminated assembly to fix the laminated assembly. By arranging at least one insulating sleeve on the periphery of the laminated assembly, and providing a convex block for limiting the insulating sleeve at the trapezoidal waist of the laminated assembly, the stability of the rotor tooth structure is enhanced, and the laminated assembly is made of punched and sheared laminated sheets and fixed by the insulating sleeve, it is easy to ensure the consistency of the size of each rotor tooth, and also improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of axial magnetic field motors, and in particular to a rotor tooth of an axial magnetic field motor and a manufacturing method thereof. Background Art

[0002] Axial magnetic field motors are also called disc motors. They have the advantages of small axial size, high torque density, high power density and high efficiency, and are widely used in electric vehicles, general industry and household appliances. The motor is divided into a stator and a rotor. The stator generally uses silicon steel sheets as the lamination material, which is made by punching and continuous winding. The rotor is generally composed of permanent magnets, rotor brackets and protective rings. For reluctance axial motors, the rotor is formed by multiple sheets of different widths, which are stacked in a gradually increasing width to form a sector-shaped tooth block (i.e., silicon steel block). When the silicon steel block is installed on the rotor bracket, the multiple layers of sheets of each silicon steel block are arranged radially along the rotor bracket.

[0003] At present, multiple silicon steel blocks assembled on the same rotor bracket are obtained by cutting the rolled and welded silicon steel disc. The specific method is as follows: first, a silicon steel strip is wound into a ring-shaped disc, and the two side end surfaces of the disc are quickly laser welded to obtain a silicon steel disc; then the silicon steel disc is cut by a wire cutting machine to obtain multiple sector-shaped silicon steel blocks. Although the laser welding method ensures that the multiple sheets of the silicon steel block will not separate during the cutting process, there are still the following defects:

[0004] First, only the two axial end faces of the silicon steel block are welded, while the two circumferential end faces of the silicon steel block are not restricted by welding, and the two circumferential end faces of the silicon steel block are cutting surfaces. Therefore, the rolled silicon steel disk is easy to rebound during the cutting process, resulting in insufficient precision of the silicon steel block and low forming efficiency.

[0005] Second, after multiple silicon steel blocks are loaded into the rotor bracket and then covered with protective rings, there is a gap between the protective rings and the maximum outer diameter of the rotor bracket. When the rotor rotates at high speed, the rings may easily shift or the silicon steel blocks may be thrown out, causing defects such as motor burning and poor reliability.

[0006] Third, the interlayer insulation is easily destroyed when welding or cutting silicon steel blocks, and the electromagnetic consistency of each silicon steel block cannot be guaranteed. In addition, the silicon steel blocks are cut one by one, which not only has low production efficiency, but also cannot guarantee the size consistency of each silicon steel block. In addition, the rotor disk is assembled, and the position consistency of each silicon steel block on the rotor disk cannot be guaranteed. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a rotor tooth, a rotor and a manufacturing method of an axial magnetic field motor that ensures the consistency of the electromagnetic, size and installation position of each tooth structure, as well as high production efficiency, and effectively solves the problem of movement caused by the gap between the tooth structure and the protective ring, thereby greatly enhancing the mechanical reliability of the rotor disk to ensure the output torque of the motor and effectively reduce the eddy current loss of the rotor.

[0008] According to one aspect of the present invention, the present invention provides a rotor tooth of an axial magnetic field motor, comprising a stacked assembly and at least one insulating sleeve, wherein the stacked assembly is formed by stacking multiple silicon steel sheets of different widths, and the insulating sleeve is engaged with the periphery of the stacked assembly to fix the stacked assembly.

[0009] As a preferred embodiment, the stacked assembly is trapezoidal in shape, and a plurality of silicon steel sheets are stacked along the height of the trapezoid. The trapezoidal top, bottom and two waists of the stacked assembly define the periphery of the stacked assembly.

[0010] As a preferred embodiment, at least one waist portion of the stacked assembly extends outward to form a protrusion, so that the insulating sleeve is confined on the protrusion.

[0011] As a preferred embodiment, the number of the insulating sleeves is two, and the two insulating sleeves are arranged at intervals along the thickness direction of the stacked assembly so that the protective ring is located between the two insulating sleeves.

[0012] As a preferred embodiment, two protrusions are respectively arranged on each waist of the laminate assembly, the two protrusions are arranged at intervals along the thickness direction of the laminate assembly, and a groove is formed between the two protrusions for limiting the position with the rotor bracket.

[0013] According to one aspect of the present invention, the present invention provides a method for manufacturing rotor teeth of an axial magnetic field motor, comprising the following steps:

[0014] S110, punching and shearing the silicon steel strip to form a plurality of silicon steel sheets of different widths, and stacking the silicon steel sheets of different widths by a fixing device to form a laminated assembly;

[0015] S120, providing at least one insulating sleeve, and engaging the insulating sleeve with the periphery of the laminated assembly to form rotor teeth.

[0016] As a preferred embodiment, the fixing device has a V-shaped groove, and the V-shaped groove is adjacent to the blanking opening of the silicon steel strip punching and shearing, so that the silicon steel sheets formed by punching and shearing can be overlapped in the V-shaped groove.

[0017] As a preferred embodiment, both sides of the silicon steel sheet in the width direction can be limited between the V-shaped grooves.

[0018] As a preferred embodiment, the portion of the stacked assembly used to engage with the insulating sleeve extends to the outside of the V-shaped groove to facilitate the engagement of the insulating sleeve.

[0019] As a preferred embodiment, after S120, the method further includes:

[0020] The rotor teeth are immersed in insulating varnish as a whole, or the rotor teeth are formed as a whole by self-bonding the silicon steel sheets.

[0021] According to one aspect of the present invention, the present invention provides a rotor of an axial magnetic field motor, comprising:

[0022] A plurality of rotor teeth, each of which comprises a laminated assembly and two insulating sleeves, wherein the laminated assembly is formed by laminating a plurality of silicon steel sheets of different widths, and the insulating sleeves are engaged with the periphery of the laminated assembly to fix the laminated assembly;

[0023] A rotor support, wherein the periphery of the rotor support is inwardly recessed to form a plurality of slots, the rotor teeth are engaged in the slots in a manner that the two insulating sleeves are arranged at intervals in the axial direction, and the silicon steel sheets of the rotor teeth are arranged in the radial direction;

[0024] A protective ring is sleeved on the periphery of the rotor support and is tightly attached to the laminated assembly in a manner that the protective ring can be confined between the two insulating sleeves.

[0025] As a preferred embodiment, the rotor support includes a disk and a plurality of support rods extending and connected to the periphery of the disk, and the slot is formed between two adjacent support rods.

[0026] As a preferred embodiment, the stacking assembly is trapezoidal in shape, and multiple silicon steel sheets are stacked along the height of the trapezoid. The trapezoidal top, bottom and two waists of the stacking assembly define the periphery of the stacking assembly. The trapezoidal top of the stacking assembly is abutted against the disc through an insulating sleeve, the trapezoidal waist of the stacking assembly is abutted against the support rod through an insulating sleeve, and the protective ring is tightly attached to the trapezoidal bottom of the stacking assembly.

[0027] As a preferred embodiment, each trapezoidal waist of the stacked assembly extends outward to form a protrusion that limits the position of the insulating sleeve, and the protrusion is located on the inner side relative to the insulating sleeve.

[0028] As a preferred embodiment, the support rod is embedded between the two insulating sleeves and fits with the trapezoidal waist of the stacked assembly.

[0029] As a preferred embodiment, in each trapezoidal waist of the stacked assembly, a groove is formed between two of the protrusions, and the support rod is provided with a limiting block that cooperates with the groove.

[0030] As a preferred embodiment, the protective ring is formed by winding a fiber tape.

[0031] According to one aspect of the present invention, the present invention provides a method for manufacturing a rotor of an axial magnetic field motor, comprising the following steps:

[0032] S100, providing a plurality of rotor teeth, wherein the rotor teeth include a laminated assembly and two insulating sleeves, wherein the laminated assembly is formed by laminating a plurality of silicon steel sheets of different widths, and the insulating sleeves are engaged with the periphery of the laminated assembly;

[0033] S200, clamping a plurality of the rotor teeth one by one to the periphery of the rotor support at intervals in the circumferential direction, wherein the two insulating sleeves of the rotor teeth are arranged at intervals in the axial direction, and the silicon steel sheets of the rotor teeth are arranged in the radial direction;

[0034] S300, a protective ring is provided on the periphery of the rotor support, wherein the protective ring is limited between the two insulating sleeves and can be in close contact with the laminated assembly.

[0035] As a preferred embodiment, the protective ring includes a fiber belt. In the step S300, the fiber belt is wound around the periphery of the rotor bracket so that the fiber belt limited by the two insulating sleeves can simultaneously cling to the periphery of the laminated assembly and the rotor bracket.

[0036] As a preferred embodiment, after step S300, the method further includes the following steps:

[0037] A rotating shaft is installed in the center of the rotor support.

[0038] Compared with the prior art, this technical solution has the following advantages:

[0039] By arranging at least one insulating sleeve on the periphery of the laminated assembly, and providing a protrusion for limiting the insulating sleeve at the trapezoidal waist of the laminated assembly, the stability of the rotor tooth structure is enhanced, and the laminated assembly is made of punched and sheared laminations and fixed by the insulating sleeve, which can easily ensure the dimensional consistency of each rotor tooth and improve production efficiency. The welding and cutting processes are also omitted, and the interlayer insulation of the silicon steel block will not be damaged, ensuring the electromagnetic consistency of each rotor tooth. An area for limiting the protective ring is provided between the other two insulating sleeves, so that the protective ring can be close to the laminated assembly to prevent the gap between the two from causing separation, thereby ensuring the reliable operation of the motor.

[0040] The present invention is further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic structural diagram of the rotor teeth of the present invention;

[0042] Figure 2 A schematic diagram of stacking the laminated components of the present invention;

[0043] Figure 3 is a schematic structural diagram of the rotor of the present invention;

[0044] Figure 4 It is a schematic diagram of assembling the rotor teeth of the present invention on the rotor support;

[0045] Figure 5 It is a schematic diagram of assembling the protection ring of the present invention on the rotor support;

[0046] Figure 6 It is a schematic diagram of the protective ring of the present invention after being assembled on the rotor support;

[0047] Figure 7 It is a schematic diagram of the structure of the fixing device of the present invention.

[0048] In the figure: 100 rotor teeth, 110 laminated components, 110a trapezoidal top, 110b trapezoidal bottom, 110c trapezoidal waist, 111 protrusions, 112 grooves, 1100 silicon steel sheets, 11000 silicon steel strips, 1101 protrusions, 120 insulating sleeves, 200 rotor brackets, 2000 slots, 210 discs, 220 support rods, 300 protective rings, 310 fiber strips, 400 rotating shafts, 500 fixing devices, and 5000 V-shaped grooves. DETAILED DESCRIPTION

[0049] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0050] like Figure 1 and Figure 2 As shown, the rotor teeth 100 of the axial magnetic field motor include a stacked assembly 110 and at least one insulating sleeve 120. The stacked assembly 110 is formed by stacking multiple silicon steel sheets 1100 of different widths. The insulating sleeve 120 is engaged with the periphery of the stacked assembly 110 to fix the stacked assembly 110.

[0051] The silicon steel sheet 1100 can be punched and sheared by a silicon steel strip 11000 to form a plurality of silicon steel sheets 1100 with different widths and uniform thicknesses, and then the plurality of silicon steel sheets 1100 are stacked in a manner of gradually increasing widths to form a silicon steel sheet 1100. Figure 2 The stacked assembly 110 shown is then fixed to the periphery of the stacked assembly 110 by at least one insulating sleeve 120 to solidify the stacked assembly 110. Compared with the prior art silicon steel discs cut, rolled and welded, the welding and cutting processes are omitted, the interlayer insulation of the silicon steel block is not damaged, and the electromagnetic consistency of each rotor tooth 100 is ensured. In addition, the stacked assembly is made of punched and sheared laminations and is fixed by the insulating sleeve 120, which makes it easy to ensure the size consistency of each rotor tooth 100 and improves production efficiency.

[0052] like Figure 2 As shown, the stack assembly 110 is trapezoidal, and multiple silicon steel sheets 1100 are stacked along the height of the trapezoid. The trapezoidal top 110a, bottom 110b and two waists 110c of the stack assembly 110 define the periphery of the stack assembly 110.

[0053] The two sides of the width direction w of the silicon steel sheet 1100 correspond to the trapezoidal waists 110c of the two laminated assemblies 110, and the trapezoidal waists 110c of the two laminated assemblies 110 are symmetrically arranged so that the laminated assembly 110 is an isosceles trapezoid. The insulating sleeve 120 can be inserted from one side of the thickness direction v of the laminated assembly 110, and the insulating sleeve 120 is closely attached to the periphery of the laminated assembly 110 to prevent the silicon steel sheet 110 from shifting along its stacking direction and width direction w, thereby ensuring the stability and reliability of the rotor tooth 100 structure.

[0054] refer to Figure 2 The two waists 110 c of the stacked assembly 110 extend outwards to form protrusions 111 , so that the insulating sleeve 120 is limited to be located on the protrusions 111 .

[0055] Both sides of the width direction of each silicon steel sheet 1100 extend outward to form a convex portion 1101. When a plurality of silicon steel sheets 1100 are stacked to form the stack assembly 110, the convex portions 1101 on each silicon steel sheet 1100 are stacked to form the convex block 111. The convex block 111 is located on the inner side of the stack assembly 110 in the thickness direction relative to the insulating sleeve 120, so that the insulating sleeve 120 can be placed on the outer side of the stack assembly 110 in the thickness direction and abut against the convex block 111, so as to prevent the silicon steel sheet 1100 from being displaced in the thickness direction of the stack assembly 110, and further limit and fix the stack assembly 110.

[0056] like Figures 1 to 3 As shown, the number of the insulating sleeves 120 is two, and the two insulating sleeves 120 are arranged at intervals along the thickness direction v of the stacked assembly 110 , so that the protective ring 300 is confined between the two insulating sleeves 120 .

[0057] By increasing the number of the insulating sleeves 120, not only can the fixing ability of the stacking assembly 110 be improved, but also an area for limiting the protective ring 300 can be formed between the two insulating sleeves 120, so that the protective ring 300 can be tightly attached to the stacking assembly 110 to prevent the separation caused by the gap between the two, thereby improving the reliability of the rotor operation, ensuring the output torque of the motor, and reducing the eddy current loss of the rotor.

[0058] Furthermore, two protrusions 111 are respectively disposed on each waist 110 c of the stack assembly 110 . The two protrusions 111 are spaced apart along the thickness direction of the stack assembly 110 , and a groove 112 is formed between the two protrusions 111 for limiting the position of the rotor bracket 200 .

[0059] The two protrusions 111 are held between the two insulating sleeves 120, and each insulating sleeve 120 is respectively limited on one of the insulating sleeves 120. A gap is maintained between the two protrusions 111, so that a groove 112 is formed between the two protrusions 111, and the rotor support 200 can be limited in the groove 112 to prevent the rotor teeth 100 from moving in the axial direction of the rotor support 200.

[0060] In summary, by arranging at least one insulating sleeve 120 on the periphery of the laminated assembly 110, and the trapezoidal waist 110c of the laminated assembly 110 provides a protrusion 111 for limiting the insulating sleeve 120, the stability of the rotor tooth structure is enhanced, and the laminated assembly is made of punched and sheared laminations and fixed by the insulating sleeve 120, which can easily ensure the dimensional consistency of each rotor tooth 100 and improve production efficiency. The welding and cutting processes are also omitted, and the interlayer insulation of the silicon steel block will not be damaged, ensuring the electromagnetic consistency of each rotor tooth 100. An area for limiting the protective ring 300 is provided between the other two insulating sleeves 120, so that the protective ring 300 can be close to the laminated assembly 110 to prevent the gap between the two from causing separation, thereby ensuring reliable operation of the motor.

[0061] like Figure 1 and Figure 2 As shown, the present invention provides a method for manufacturing rotor teeth of an axial magnetic field motor, comprising the following steps:

[0062] S110, punching and shearing the silicon steel strip 11000 to form a plurality of silicon steel sheets 1100 with different widths, and stacking the silicon steel sheets 1100 with different widths by a fixing device 500 to form a laminated assembly 110;

[0063] S120 , providing at least one insulating sleeve 120 , and engaging the insulating sleeve 120 on the periphery of the stacked assembly 110 to form a rotor tooth 100 .

[0064] In the step S110, the silicon steel strip 11000 is conveyed from left to right, and the fixing device 500 has a V-shaped groove 5000, which is located below the punching and shearing opening of the silicon steel strip 11000, so that when the right side of the silicon steel strip 11000 is punched and sheared, the punched silicon steel sheet 1100 is directly overlapped on the V-shaped groove 5000, thereby improving the forming efficiency of the stacking assembly 110.

[0065] It should be noted that the punched and sheared parts of the silicon steel strip 11000 form the side edges in the width direction of the silicon steel sheet 1100 , that is, the protrusions 111 and the grooves 112 are formed after the side edges are overlapped.

[0066] Specifically, the thickness direction of the V-groove 5000 is perpendicular to the conveying direction of the silicon steel strip 11000, and the thickness direction of the stacking assembly 110 formed by stacking is consistent with the thickness direction of the V-groove 5000. In this way, after the punched silicon steel sheet 1100 falls into the V-groove 5000, both sides of the silicon steel sheet 1100 in the width direction can be limited by the V-groove 5000, and the height and thickness of the stacking assembly 110 are not restricted. In addition, the size of the V-groove 5000 can be slightly larger than the stacking assembly 110.

[0067] The portion of the laminated component 110 used to engage with the insulating sleeve 120 extends to the outside of the V-shaped groove 5000 , and then in the step S120 , the insulating sleeve 120 is engaged with the portion of the laminated component 110 extending outside the V-shaped groove 5000 .

[0068] Specifically, the thickness dimension of the stacking assembly 110 is greater than the thickness dimension of the V-shaped groove 5000, so that the two sides of the stacking assembly 110 in the thickness direction extend to the outside of the V-shaped groove 5000 respectively, so as to facilitate the two insulating sleeves 120 to be mounted on the periphery of the two sides of the stacking assembly 110 in the thickness direction.

[0069] After S120, the method further includes:

[0070] The rotor teeth are immersed in insulating paint as a whole to improve the insulation capability. Alternatively, the rotor teeth 100 are formed as a whole by self-bonding the silicon steel sheets 1100.

[0071] In summary, the laminated assembly is made of punched and sheared laminations and fixed by the insulating sleeve 120, which can easily ensure the dimensional consistency of each rotor tooth 100 and improve production efficiency. The welding and cutting processes are also omitted, and the interlayer insulation of the silicon steel block will not be damaged, thereby ensuring the electromagnetic consistency of each rotor tooth 100. The silicon steel sheets 1100 are stacked by the V-groove 5000, and the laminated assembly 110 can be quickly stacked while being punched and sheared, and the portion of the laminated assembly 110 used to engage the insulating sleeve 120 extends to the outside of the V-groove 5000, so that the insulating sleeve 120 can be sleeved on the periphery of the laminated assembly 110, further improving the forming efficiency.

[0072] like Figures 1 to 6 As shown, a rotor of an axial magnetic field motor comprises:

[0073] A plurality of rotor teeth 100, each of which comprises a laminate assembly 110 and two insulating sleeves 120, wherein the laminate assembly 110 is formed by laminating a plurality of silicon steel sheets 1100 of different widths, and the insulating sleeves 120 are engaged with the outer periphery of the laminate assembly 110 to fix the laminate assembly 110;

[0074] A rotor support 200, wherein the periphery of the rotor support 200 is recessed inward to form a plurality of slots 2000, wherein the rotor teeth 100 are engaged in the slots 2000 in a manner that the two insulating sleeves 120 are arranged in an axially spaced manner, and the silicon steel sheets 1100 of the rotor teeth 100 are arranged in a radial direction;

[0075] A protection ring 300 is sleeved on the periphery of the rotor support 200 and is tightly attached to the laminated assembly 110 in a manner that the protection ring 300 can be confined between the two insulating sleeves 120 .

[0076] Since the rotor adopts the rotor teeth 100 of the above embodiment, the beneficial effects of the rotor brought by the rotor teeth 100 refer to the above embodiment. In addition, the protective ring 300 sleeved on the periphery of the rotor support 200 is limited between the two insulating sleeves 120 and is close to the laminate assembly 110 to fasten the rotor teeth 100 to the rotor support 200, prevent the protective ring 300 from being displaced and failing, and prevent the existence of a gap between the laminate assembly and the protective ring 300, further preventing the rotor teeth 100 from moving and affecting the motor performance.

[0077] like Figure 3 and Figure 4As shown, the rotor support 200 includes a disk 210 and a plurality of support rods 220 extending and connected to the periphery of the disk 210, and a slot 2000 is formed between two adjacent support rods 220. The slot 2000 is consistent with the shape of the stack assembly 110, both of which are trapezoidal.

[0078] Specifically, a plurality of silicon steel sheets 1100 are stacked along the trapezoidal height, and the trapezoidal top 110a, bottom 110b and two waists 110c of the stack assembly 110 define the periphery of the stack assembly 110, the trapezoidal top 110a of the stack assembly 110 is abutted against the disc 210 through an insulating sleeve 120, the trapezoidal waist 110c of the stack assembly 110 is abutted against the support rod 220 through an insulating sleeve 120, and the protective ring 300 is tightly attached to the trapezoidal bottom 110b of the stack assembly 110.

[0079] The disc 210 and the guard ring 300 radially fix the rotor tooth 100 to prevent it from moving in the radial direction, and the guard ring 300 is in close contact with the laminate assembly 110, which solves the movement caused by the gap. The two adjacent support rods 220 circumferentially fix the rotor tooth 100 to prevent the rotor tooth 100 from moving in the axial direction.

[0080] In addition, in each trapezoidal waist 110c of the stack assembly 110, a groove 112 is formed between the two protrusions 111, and the support rod 220 is provided with a stopper 221 that cooperates with the groove 112. The stopper 221 cooperates with the groove 112 to prevent the rotor tooth 100 from axial displacement, thereby ensuring the stability of the rotor tooth 100 fixed on the rotor bracket 200.

[0081] like Figure 2 and Figure 5 As shown, the support rod 220 is embedded between the two insulating sleeves 120 and fits with the trapezoidal waist 110c of the stack assembly 110. The trapezoidal top 110a of the stack assembly 110 fits with the disc 210, further preventing a large gap between the stack assembly and the rotor support 200, which would cause movement.

[0082] like Figure 5As shown, the protective ring 300 is formed by winding a fiber tape 310. The fiber tape 310 can be made of a mixture of carbon fiber or resin materials to tighten and fix the rotor teeth 100 on the rotor bracket 200, and the protective ring 300 is limited between the two insulating sleeves 120 to prevent the protective ring 300 from moving and affecting the fixing effect. And by using the process of winding the fiber tape 310, the rotor bracket 200 and the plurality of rotor teeth 100 can be integrally formed, and the position consistency of each rotor tooth 100 on the rotor bracket 200 is ensured, and the molding efficiency is improved at the same time.

[0083] In summary, the protective ring 300 sleeved on the periphery of the rotor support 200 is limited between the two insulating sleeves 120 and is close to the laminate assembly 110 to fasten the rotor teeth 100 to the rotor support 200, prevent the protective ring 300 from being displaced and failing, and prevent the existence of a gap between the laminate assembly and the protective ring 300, further preventing the rotor teeth 100 from moving and affecting the motor performance. By using the process of winding the fiber tape 310, the rotor support 200 and the plurality of rotor teeth 100 can be integrally formed, and the position consistency of each rotor tooth 100 on the rotor support 200 is ensured, while the molding efficiency is improved.

[0084] like Figures 1 to 6 As shown, a method for manufacturing a rotor of an axial magnetic field motor comprises the following steps:

[0085] S100, providing a plurality of rotor teeth 100, wherein the rotor teeth 100 include a laminated assembly 110 and two insulating sleeves 120, wherein the laminated assembly 110 is formed by laminating a plurality of silicon steel sheets 1100 of different widths, and the insulating sleeves 120 are engaged with the periphery of the laminated assembly 110;

[0086] S200, a plurality of the rotor teeth 100 are clamped one by one on the periphery of the rotor support 200 at intervals in the circumferential direction, the two insulating sleeves 120 of the rotor teeth 100 are arranged at intervals in the axial direction, and the silicon steel sheets 1100 of the rotor teeth 100 are arranged in the radial direction;

[0087] S300 , a protection ring 300 is provided on the periphery of the rotor support 200 . The protection ring 300 is limited between the two insulating sleeves 120 and can be closely attached to the laminated assembly 110 .

[0088] The manufacturing method of the rotor teeth 100 is referred to the above embodiment and will not be described here. The rotor teeth 100 and the number of silicon steel sheets 1100 constituting the rotor teeth 100 can be selected according to design requirements.

[0089] In the step S200 , when the rotor teeth 100 are engaged with the periphery of the rotor bracket 200 , a tool or adhesive may be used to pre-limit the circumferential direction thereof, pending the arrangement of the protective ring 300 .

[0090] like Figure 5 and Figure 6 As shown, the protective ring 300 includes a fiber belt 310. In the step S300, the tooling or equipment is used to wrap the fiber belt 310 around the periphery of the rotor bracket 200 so that the fiber belt 310 limited by the two insulating sleeves 120 can simultaneously cling to the periphery of the laminated assembly 110 and the rotor bracket 200.

[0091] After step S300, the method further includes the following steps:

[0092] The rotating shaft 400 is installed in the center of the rotor support 200. Figure 3 The rotating shaft 400 may be fixed at the center of the rotor support 200 by a fastener.

[0093] The embodiments described above are only used to illustrate the technical ideas and features of the present invention, and their purpose is to enable technicians in this field to understand the contents of the present invention and implement them accordingly. The patent scope of the present invention cannot be limited only by this embodiment, that is, any equivalent changes or modifications made according to the spirit disclosed by the present invention still fall within the patent scope of the present invention.

Claims

1. A rotor tooth (100) of an axial magnetic field motor, characterized in that: The invention comprises a stacking assembly (110) and at least one insulating sleeve (120), wherein the stacking assembly (110) is formed by stacking a plurality of silicon steel sheets (1100) of different widths, the insulating sleeve (120) is engaged with the periphery of the stacking assembly (110) to fix the stacking assembly (110), and the outer ring of the stacking assembly (110) and the insulating sleeve (120) are respectively limitedly matched with a rotor support (200).

2. The rotor tooth (100) of the axial magnetic field motor according to claim 1, characterized in that: The stacked assembly (110) is in a trapezoidal shape, and a plurality of silicon steel sheets (1100) are stacked along the height of the trapezoid. The trapezoidal top (110a), bottom (110b) and two waists (110c) of the stacked assembly (110) define the periphery of the stacked assembly (110).

3. The rotor tooth (100) of the axial magnetic field motor according to claim 2, characterized in that: At least one waist (110c) of the stacked assembly (110) extends outwards to form a bulge (111), so that the insulating sleeve (120) is limitedly located on the bulge (111).

4. The rotor tooth (100) of the axial magnetic field motor according to claim 2, characterized in that: The number of the insulating sleeves (120) is two, and the two insulating sleeves (120) are arranged at intervals along the thickness direction of the stacked component (110), so that the protective ring (300) is limited between the two insulating sleeves (120).

5. The rotor tooth (100) of the axial magnetic field motor according to claim 4, characterized in that: Two protrusions (111) are respectively arranged on each waist (110c) of the stack assembly (110); the two protrusions (111) are spaced apart along the thickness direction of the stack assembly (110); and a groove (112) is formed between the two protrusions (111) for limiting the position of the rotor bracket (200).

6. A method for manufacturing rotor teeth of an axial magnetic field motor, characterized in that: The following steps are involved: S110, punching and shearing the silicon steel strip (11000) to form a plurality of silicon steel sheets (1100) of different widths, and stacking the silicon steel sheets (1100) of different widths by a fixing device (500) to form a laminated assembly (110); S120, providing at least one insulating sleeve (120), and engaging the insulating sleeve (120) with the periphery of the laminated assembly (110) to form rotor teeth; the outer ring of the laminated assembly (110) and the insulating sleeve (120) are respectively limitedly matched with the rotor support (200).

7. The method for manufacturing rotor teeth of an axial magnetic field motor according to claim 6, characterized in that: The fixing device (500) has a V-shaped groove (5000), and the V-shaped groove (5000) is adjacent to the blanking opening of the silicon steel strip (11000) so that the silicon steel sheet (1100) formed by punching and shearing can be overlapped in the V-shaped groove (5000).

8. The method for manufacturing rotor teeth of an axial magnetic field motor according to claim 7, characterized in that: Both sides of the silicon steel sheet (1100) in the width direction can be limited between the V-shaped grooves (5000).

9. The method for manufacturing rotor teeth of an axial magnetic field motor according to claim 7, characterized in that: The portion of the stacked component (110) used to engage with the insulating sleeve (120) extends to the outside of the V-shaped groove (5000) to facilitate the engagement of the insulating sleeve (120).

10. The method for manufacturing rotor teeth of an axial magnetic field motor according to claim 6, characterized in that: After step S120, the method further includes: The rotor teeth (100) are immersed in insulating varnish as a whole, or the rotor teeth (100) are self-adhesively formed into a whole through the silicon steel sheets (1100).

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