Reluctance rotor for rotary motor and manufacturing method

Abstract

The invention discloses a reluctance rotor for a rotary motor and a manufacturing method, the reluctance rotor comprises a magnetizer, at least two non-magnetizers and at least one connecting assembly, the magnetizer is cylindrical, the magnetizer comprises at least two magnetic conductive parts and at least two connecting parts which are connected in sequence, and the non-magnetizers are connected with the connecting assembly. The at least two magnetic conductive parts and the at least two connecting parts are combined to form a cylindrical structure, the connecting parts are connected to the inner wall of the potting groove along the cylindrical structure, and the connecting assembly is configured to connect the at least two non-magnetic conductive bodies. The problems that in the prior art, due to the fact that a rotor of a reluctance motor adopts a traditional splicing type connection means, microcosmic gaps and the mechanical property at the combination positions of components are discontinuous, and consequently the motor rotor is prone to causing the defects that magnetic flux leakage is intensified, and the structure is loosened during high-speed operation are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of reluctance motors, and particularly to a reluctance rotor for a rotating motor and a manufacturing method thereof. Background Art

[0002] The rotor of a reluctance motor is its core component, and its special structure directly affects the reluctance change and operating performance of the motor. Usually, the rotor adopts a salient pole design to form a significant difference in reluctance in the direct axis (d-axis) and quadrature axis (q-axis) directions, and generates torque through the periodic change of reluctance.

[0003] ‌In the construction of a reluctance rotor for a rotating motor, it is crucial to achieve a firm connection between the magnetic-conducting and non-magnetic-conducting components while taking into account the optimization of magnetic performance. Traditional splicing connection means, such as bonding and mortise and tenon assembly, for example, the Chinese utility model patent with the publication number: CN202696300U, titled: A filled rotor structure for a switched reluctance motor, includes: rotor slot structure design, filler foaming mold design, and demolding and forming process. The rotor slot is designed as a groove structure, and the filler is designed as a corresponding convex structure. The ultra-lightweight filling block of the filled rotor slot is ultra-lightweight polyurethane rigid foam P50, which has good mechanical properties. The processing of the filling block adopts the method of integral demolding and forming. After foaming and forming, a scab with a thickness of about 1 mm can be formed on the surface of the ultra-lightweight filling block. This scab greatly increases the structural strength of the ultra-lightweight filling block without basically affecting the overall weight of the ultra-lightweight filling block. When assembling, a high-temperature resistant adhesive is evenly applied on the surface of the rotor slot to strengthen the connection between the ultra-lightweight filling block and the rotor slot.

[0004] Traditional splicing connection means not only have cumbersome processes, but also are prone to problems such as increased magnetic leakage and structural looseness during high-speed operation due to microscopic gaps and discontinuous mechanical properties at the joints of components, resulting in limited motor efficiency and reduced reliability, and it is difficult to meet the urgent needs of modern industry for high-efficiency, energy-saving, and high-stability motors. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies, and propose a reluctance rotor for a rotating motor and a manufacturing method thereof, to solve the technical problems in the prior art that due to the traditional splicing connection means used in the rotor of the reluctance motor, the microscopic gaps and discontinuous mechanical properties at the joints of components are caused, resulting in problems such as increased magnetic leakage and structural looseness during high-speed operation of the motor rotor.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a reluctance rotor for a rotating motor, including: The magnetic conductor includes at least two magnetic conducting parts and at least two connecting parts connected in sequence, and the at least two magnetic conducting parts and the at least two connecting parts are combined to form a cylindrical structure. The connecting part is provided with a potting groove penetrating the connecting part along the axial direction of the cylindrical structure; At least two non-magnetic conductors, which are hermetically filled in the potting groove and connected to the inner wall of the potting groove; and At least one connecting component, which is configured to connect at least two of the non-magnetic conductors.

[0007] In some embodiments, the connecting component includes at least two connecting rods and a connecting end plate. The connecting rods are arranged in one-to-one correspondence with the non-magnetic conductors. One end of the connecting rod is connected to the non-magnetic conductor, and the connecting end plate is detachably connected to the other ends of at least two of the connecting rods.

[0008] In some embodiments, the connecting rod is inserted into the potting groove, and both ends of the connecting rod are externally disposed outside the through groove. The non-magnetic conductor is a fluid structure and is potted in the through groove, and the non-magnetic conductor can be coated and connected to the connecting rod.

[0009] In some embodiments, the connecting end plate is provided with connecting holes opposite to the connecting rods. The connecting end plate is sleeved on the ends of the connecting rods through the connecting holes. The connecting component further includes at least two connecting sleeves, which are arranged in one-to-one correspondence with the connecting rods. The connecting sleeves are slidably sleeved on the ends of the connecting rods and can be clamped with the connecting end plate.

[0010] In some embodiments, an external thread is formed on the circumferential outer wall of the end of the connecting rod, and an internal thread is formed on the circumferential inner wall of the connecting sleeve. The connecting sleeve is threadedly connected to the connecting rod, and the connecting sleeve abuts against the connecting end plate.

[0011] In some embodiments, the magnetic conductor further includes at least two partition plates, which are connected to the inner wall of the through groove and divide the potting groove into two independent potting cavities. The connecting rods are arranged in one-to-one correspondence with the potting cavities and are inserted into the potting cavities.

[0012] In some embodiments, the connecting end plate is provided with potting holes opposite to the potting cavities. The potting holes penetrate the connecting end plate and communicate with the potting cavities.

[0013] In some embodiments, the connecting end plate is annular, and the number of the connecting components is two. The two connecting end plates are respectively arranged at both ends of the magnetic conductor and are respectively detachably connected to a plurality of connecting rods.

[0014] In some embodiments, a first air guiding groove and a second air guiding groove are formed by enclosing between the connecting portion and two adjacent magnetic guiding portions. The first air guiding groove is arranged farther from the axis of the magnetic conductor than the second air guiding groove, and the cross-sectional area of the second air guiding groove is larger than that of the first air guiding groove.

[0015] Second, the present invention also provides a manufacturing method for a reluctance rotor for a rotating electric machine. Using the reluctance rotor for a rotating electric machine as described above, the specific steps are as follows: Forming the punching sheet, Customize the leather material according to parameters such as the inner diameter, outer diameter, and thickness of the rotor laminations, feed it into a numerical control punching machine, and perform high-speed punching and forming; Installing the connecting components, Clamp with the connecting end plates at both ends, slowly screw the connecting rod after insulation treatment into the connecting holes according to the connecting holes, and twist the connecting sleeve to ensure that the connecting end plates are closely attached to the rotor laminations; Potting the non-magnetic conductor, Seal the outer diameter of the rotor laminations, inject a low-viscosity and high-fillability insulating resin into the potting holes of the connecting end plates, inject it into the potting cavity by vacuum assistance, and cure and form by gradient temperature rise; Quality inspection, Successively perform quality inspection processes such as magnetic performance scanning, dynamic balance verification, and insulation resistance testing.

[0016] Compared with the prior art, the beneficial effects of the reluctance rotor for a rotating electric machine and the manufacturing method provided by the present invention include: at least two magnetic guiding portions and at least two connecting portions are sequentially connected along the circumferential direction of the cylindrical magnetic conductor. The non-magnetic conductor is hermetically filled in the potting groove formed on the connecting portion and is connected to the inner wall of the potting groove. At least one connecting component is connected to at least two non-magnetic conductors. Compared with the prior art, the non-magnetic conductor on the rotor is hermetically filled in the potting groove on the magnetic conductor by potting, so that the magnetic guiding part and the non-magnetic guiding part on the rotor are an integral structure, which can avoid microscopic gaps and discontinuous mechanical properties at the joint of components. At the same time, the connection stability of the integral structure is increased by connecting at least two non-magnetic conductors with the connecting component, and the loosening of the integral structure during high-speed rotation is avoided, which can solve the technical problems in the prior art that due to the traditional splicing connection means of the rotor of the reluctance motor, the microscopic gaps and discontinuous mechanical properties at the joint of components are caused, resulting in problems such as increased magnetic leakage and loosening of the structure during high-speed operation of the motor rotor. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of a reluctance rotor for a rotating electric machine provided by an embodiment of the present invention; Figure 2 is a cross-sectional view of the connection between the magnetic conductor, the non-magnetic conductor, and the connecting rod provided by an embodiment of the present invention; Figure 3 is along Figure 2 The enlarged schematic view at position A in

[0018] Description of the reference numerals in the drawings: Magnetic conductor 100; magnetic conduction part 110; first air guide groove 111; second air guide groove 112; connecting part 120; potting groove 130; partition 140; non-magnetic conductor 200; connecting assembly 300; connecting rod 310; connecting end plate 320; potting hole 321; connecting sleeve 330. Specific embodiments

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] In order to solve the technical problems that due to the traditional splicing connection means used for the rotor of the reluctance motor, the microscopic gaps and mechanical property discontinuities at the joint of components are caused, resulting in problems such as increased magnetic leakage and structural looseness during high-speed operation of the motor rotor, the present invention provides a reluctance rotor for a rotating motor and a manufacturing method, which can realize that the non-magnetic conductor 200 on the rotor is hermetically filled in the potting groove 130 on the magnetic conductor 100 by potting, so that the magnetic conduction part 110 and the non-magnetic conduction part 110 on the rotor are integrated structures, which can avoid microscopic gaps and mechanical property discontinuities at the joint of components. At the same time, the connecting assembly 300 is connected to at least two non-magnetic conductors 200 to increase the connection stability of the overall structure and avoid loosening of the overall structure during high-speed rotation.

[0021] Please refer to Figures 1 to 3 , Figure 1 , Figure 3 is a schematic structural view of a reluctance rotor for a rotating motor and a manufacturing method in an embodiment of the present invention. The reluctance rotor for a rotating motor includes: a magnetic conductor 100, at least two non-magnetic conductors 200 and at least one connecting assembly 300. The magnetic conductor 100 includes at least two magnetic conduction parts 110 and at least two connecting parts 120 connected in sequence. At least two magnetic conduction parts 110 and at least two connecting parts 12 are combined to form a cylindrical structure. The connecting part 120 is provided with a potting groove 130 penetrating through the connecting part 120 along the axial direction of the cylindrical structure. The non-magnetic conductor 200 is hermetically filled in the potting groove 130 and connected to the inner wall of the potting groove 130. The connecting assembly 300 is configured to connect at least two non-magnetic conductors 200.

[0022] In this device, the non-magnetic body 200 on the rotor is hermetically filled in the potting groove 130 on the magnetic body 100 by potting, so that the magnetic part 110 and the non-magnetic part 110 on the rotor form an integral structure, which can avoid the microscopic gaps and discontinuous mechanical properties at the joint of components. At the same time, the connecting component 300 is connected to at least two non-magnetic bodies 200 to increase the connection stability of the overall structure and prevent the overall structure from loosening during high-speed rotation. It can solve the technical problems in the prior art that due to the traditional splicing connection means of the rotor of the reluctance motor, the microscopic gaps and discontinuous mechanical properties at the joint of components, resulting in problems such as increased magnetic leakage and loosening of the structure during high-speed operation of the motor rotor.

[0023] Further, the raw material of the magnetic body 100 in this device is silicon steel sheet, and at least two magnetic parts 110 and at least two connecting parts 120 connected in sequence along its circumferential direction are formed by stamping.

[0024] Further, the material of the non-magnetic body 200 in this device is a low-viscosity, high-fill insulating resin, which is a common and easily purchasable material in the market and is a conventional setting well-known to those skilled in the art, so no more details will be given here.

[0025] Further, the reluctance rotor in this device is applicable not only to reluctance motors but also to various types of motors, such as: reluctance type doubly-fed motors, reluctance motors, magnetic gears and other types of motors, so no more details will be given here.

[0026] In this embodiment, as Figure 1 shown, the connecting component 300 includes at least two connecting rods 310, a connecting end plate 320 and at least two connecting sleeves 330.

[0027] Among them, the connecting rods 310 are arranged in one-to-one correspondence with the non-magnetic bodies 200. One end of the connecting rod 310 is connected to the non-magnetic body 200, and the connecting end plate 320 is detachably connected to the other ends of at least two connecting rods 310.

[0028] The connecting rod 310 is used to connect multiple non-magnetic bodies 200 and the connecting end plate 320, so as to increase the connection strength and connection stability of the overall structure.

[0029] Further, as a key fastening component on the motor rotor, the connecting rod 310 is tightly sleeved with a high-performance insulating sleeve rod on its outer circumference, and the insulating material is selected from materials with high temperature resistance, wear resistance and high dielectric constant, such as: special ceramic fiber reinforced plastic.

[0030] Further, it is completely wrapped from the head to the tail of the connecting rod 310 to block the current conduction path between it and the rotor laminations, prevent the generation of eddy currents in the alternating magnetic field due to metal contact, and ensure the stable electrical insulation between the laminations even in a high-frequency and strong magnetic operation environment, safeguard the motor from additional eddy current losses, and improve the overall energy efficiency of the motor.

[0031] In one embodiment, as Figures 1 to 3 shown, the connecting rod 310 is inserted into the potting groove 130, and both ends of the connecting rod 310 are externally disposed in the through groove. The non-magnetic body 200 is a fluid structure and is potted in the through groove, and the non-magnetic body 200 can be wrapped and connected to the connecting rod 310.

[0032] The fluid non-magnetic body 200 can be wrapped and connected to the outer wall of the connecting rod 310 after curing and forming, realizing the connection between the non-magnetic body 200 and the connecting rod 310.

[0033] In one embodiment, as Figure 3 shown, the connecting end plate 320 is provided with a connection hole opposite to the connecting rod 310. The connecting end plate 320 is sleeved on the end of the connecting rod 310 through the connection hole. The connecting sleeve 330 is provided corresponding to the connecting rod 310. The connecting sleeve 330 is slidably sleeved on the end of the connecting rod 310 and can be clamped with the connecting end plate 320.

[0034] By clamping the connecting sleeve 330 slidably connected to the connecting rod 310 with the connecting end, the detachable connection between the connecting rod 310 and the connecting end plate 320 can be realized.

[0035] In one embodiment, an external thread is formed on the circumferential outer wall of the end of the connecting rod 310, and an internal thread is formed on the circumferential inner wall of the connecting sleeve 330. The connecting sleeve 330 is threadedly connected to the connecting rod 310, and the connecting sleeve 330 abuts against the connecting end plate 320.

[0036] The detachable connection between the connecting rod 310 and the connecting sleeve 330 is realized through threaded connection, which is not only simple in structure but also convenient in operation.

[0037] Further, the detachable connection between the connecting rod 310 and the connecting sleeve 330 can also be realized by elastic clamping. For example, an elastic clamping groove is formed on the circumferential side wall of the connecting rod 310, and the elastic clamping portion is connected to the connecting sleeve 330 and can be engaged with the elastic clamping groove, which will not be elaborated here.

[0038] In this embodiment, as Figure 3 shown, the magnetic conductor 100 further includes at least two partition plates 140. The partition plates 140 are connected to the inner wall of the through groove and divide the potting groove 130 into two independent potting cavities. The connecting rod 310 is provided corresponding to the potting cavity and is inserted into the potting cavity.

[0039] The potting groove 130 is divided into two independent potting cavities by a partition plate 140, which can increase the connection between a plurality of connecting rods 310 and the connecting end plate 320, thereby enhancing the connection strength and connection stability of the overall structure.

[0040] Furthermore, in this device, the partition plate 140 is formed by stamping.

[0041] In one embodiment, please refer to Figure 1 , the connecting end plate 320 is provided with a potting hole 321 relative to the potting cavity. The potting hole 321 penetrates through the connecting end plate 320 and communicates with the potting cavity.

[0042] The potting hole 321 communicates with the potting cavity, which is used to facilitate the injection of the non-magnetic body 200 into the potting cavity.

[0043] In one embodiment, please refer to Figure 1 , the connecting end plate 320 is annular, and the number of the connecting components 300 is two. The two connecting end plates 320 are respectively arranged at both ends of the magnetic conductor 100 and are respectively detachably connected to a plurality of connecting rods 310.

[0044] The connecting end plates 320 are respectively arranged at both ends of the magnetic conductor 100, which can increase the connection strength and connection stability of the overall structure.

[0045] In one embodiment, please refer to Figure 3 , a first air guiding groove 111 and a second air guiding groove 112 are formed by enclosing between the connecting portion 120 and two adjacent magnetic guiding portions 110. The first air guiding groove 111 is arranged relatively far from the axis of the magnetic conductor 100 compared with the second air guiding groove 112, and the cross-sectional area of the second air guiding groove 112 is larger than that of the first air guiding groove 111.

[0046] At least one first air guiding groove 111 and at least one second air guiding groove 112 are respectively arranged on the circumferential outer wall and circumferential inner wall of the magnetic conductor 100, so that the surface side wall of the magnetic conductor 100 forms an uneven shape, which can generate a turbulent air film due to the difference in surface air resistance during the rotation of the rotor, strengthen air heat exchange, reduce the temperature rise compared with the traditional smooth rotor, delay the insulation aging, and extend the service life of the motor.

[0047] Furthermore, the cross-sectional area of the second air guiding groove 112 is larger than that of the first air guiding groove 111, which can strengthen the heat exchange effect, delay the insulation aging, and extend the service life of the motor.

[0048] In this embodiment, a manufacturing method for a reluctance rotor for a rotating motor is also provided. By using the above-mentioned reluctance rotor for a rotating motor, the specific steps are as follows: Form the punching sheet, Customize the leather according to parameters such as the inner diameter, outer diameter and thickness of the rotor lamination, and send it into a numerical control stamping machine for high-speed stamping and forming; Install the connection assembly 300, Clamp it with the connection end plates 320 at both ends, and slowly screw the connecting rod 310 after insulation treatment into the connection holes according to the connection holes, and twist the connection sleeve 330 to ensure that the connection end plates 320 are closely attached to the rotor lamination; Potting the non-magnetic body 200, Seal the outer diameter of the rotor lamination, inject a low-viscosity and high-fill insulation resin into the potting hole 321 of the connection end plate 320, inject it into the potting cavity by vacuum assistance, and cure and form by gradient heating; Quality inspection, Successively carry out quality inspection processes such as magnetic performance scanning, dynamic balance verification, insulation resistance test, etc.

[0049] For a better understanding of the present invention, the following is combined with Figures 1 to 3 The technical solution of the present invention will be described in detail: At least two magnetic conductive parts 110 and at least two connecting parts 120 are sequentially connected along the circumferential direction of the cylindrical magnetic conductive body 100. The non-magnetic body 200 is hermetically filled in the potting groove 130 opened on the connecting part 120 and connected to the inner wall of the potting groove 130. At least one connecting assembly 300 is connected to at least two non-magnetic bodies 200. Compared with the prior art, the non-magnetic body 200 on the rotor is hermetically filled in the potting groove 130 on the magnetic conductive body 100 by potting, so that the magnetic conductive part 110 and the non-magnetic part 110 on the rotor are integrated structures, which can avoid microscopic gaps and mechanical property discontinuities at the joint of components. At the same time, the connection assembly 300 is connected to at least two non-magnetic bodies 200 to increase the connection stability of the overall structure and prevent the overall structure from loosening during high-speed rotation.

[0050] Further, the reluctance rotor for a rotating motor in this device includes silicon steel sheets, potting glue and screws. The raw material of the magnetic conductive part 110 is silicon steel sheets. Customize the leather according to parameters such as the inner and outer diameters and thickness of the rotor lamination, and send it into a numerical control stamping machine, load the pre-programmed bridging holes and grid contour programs, and carry out high-speed stamping and forming.

[0051] Further, after the formed punching sheets are automatically sorted and cleaned to remove chips, they are stacked on a special tooling strictly according to the process to ensure that the bridge columns are aligned and the grids are continuous; clamped with the front and rear cover plates, the tightened screw after insulation treatment is slowly screwed into the positioning holes and twisted tightly to ensure that the laminations are closely attached.

[0052] Further, the outer diameter of the rotor lamination is sealed, a low-viscosity and high-fill insulation resin is injected at the end plate, injected into the grid gap by vacuum assistance, and cured and formed by gradient heating.

[0053] Furthermore, the final product undergoes multiple quality inspection processes such as magnetic property scanning, dynamic balance verification, and insulation resistance testing to form an integrally molded reluctance motor rotor.

[0054] With the above structure, this device can solve the technical problems in the prior art that due to the use of traditional splicing connection means for the rotor of the reluctance motor, the microscopic gaps and mechanical properties at the joint of components are discontinuous, resulting in drawbacks such as increased magnetic leakage and structural looseness during high-speed operation of the motor rotor.

[0055] The specific embodiments of the present invention described above do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A reluctance rotor for a rotating electrical machine, characterized in that, Comprising: A magnetic conductor, including at least two magnetic conducting parts and at least two connecting parts connected in sequence, and the at least two magnetic conducting parts and the at least two connecting parts are combined to form a cylindrical structure, and the connecting part is provided with a potting groove penetrating through the connecting part along the axial direction of the cylindrical structure; At least two non-magnetic conductors, the non-magnetic conductors are hermetically filled in the potting groove and connected to the inner wall of the potting groove; And At least one connecting component, the connecting component is configured to connect at least two of the non-magnetic conductors.

2. The reluctance rotor for a rotating electrical machine according to claim 1, wherein The connecting component includes at least two connecting rods and a connecting end plate, the connecting rods are arranged in one-to-one correspondence with the non-magnetic conductors, one end of the connecting rod is connected to the non-magnetic conductor, and the connecting end plate is detachably connected to the other ends of at least two of the connecting rods.

3. The reluctance rotor for a rotating electrical machine according to claim 2, wherein The connecting rod is inserted into the potting groove, and both ends of the connecting rod are externally disposed outside the through groove, the non-magnetic conductor is a fluid structure and is potted in the through groove, and the non-magnetic conductor can be coated and connected to the connecting rod.

4. The reluctance rotor for a rotating electrical machine according to claim 3, characterized in that, The connecting end plate is provided with connecting holes relative to the connecting rods, the connecting end plate is sleeved on the end of the connecting rod through the connecting holes, the connecting component further includes at least two connecting sleeves, the connecting sleeves are arranged in one-to-one correspondence with the connecting rods, the connecting sleeves are slidably sleeved on the end of the connecting rod, and can be clamped with the connecting end plate.

5. The reluctance rotor for a rotating electric machine according to claim 4, characterized in that, An external thread is formed on the circumferential outer wall of the end of the connecting rod, an internal thread is formed on the circumferential inner wall of the connecting sleeve, the connecting sleeve is threadedly connected to the connecting rod, and the connecting sleeve abuts against the connecting end plate.

6. The reluctance rotor for a rotating electrical machine according to claim 3, characterized in that, The magnetic conductor further includes at least two partition plates, the partition plates are connected to the inner wall of the through groove and divide the potting groove into two independent potting cavities, the connecting rods are arranged in one-to-one correspondence with the potting cavities and are inserted into the potting cavities.

7. The reluctance rotor for a rotating electric machine according to claim 6, wherein, The connecting end plate is provided with potting holes relative to the potting cavities, the potting holes penetrate through the connecting end plate and are communicated with the potting cavities.

8. The reluctance rotor for a rotating electric machine according to claim 2, wherein, The connecting end plate is annular, the number of the connecting components is two, and the two connecting end plates are respectively arranged at both ends of the magnetic conductor and are respectively detachably connected to a plurality of connecting rods.

9. The reluctance rotor for a rotating electric machine according to claim 1, wherein A first air guiding groove and a second air guiding groove are formed by enclosing between the connecting part and two adjacent magnetic conducting parts, the first air guiding groove is arranged farther from the axis of the magnetic conductor than the second air guiding groove, and the cross-sectional area of the second air guiding groove is larger than that of the first air guiding groove.

10. A manufacturing method of a reluctance rotor for a rotating electrical machine, using the reluctance rotor for a rotating electrical machine according to any one of claims 1-9, characterized in that, The specific steps are as follows: Forming punching sheets, Customize leather materials according to parameters such as the inner diameter, outer diameter and thickness of the rotor laminations, send them into a numerical control punching machine, and perform high-speed stamping forming; Installing the connecting component, Clamp with the connecting end plates at both ends, slowly screw the connecting rods after insulation treatment into the connecting holes according to the connecting holes, and twist the connecting sleeves to ensure that the connecting end plates are closely attached to the rotor laminations; Potting the non-magnetic conductor, Seal the outer diameter of the rotor laminations, inject a low-viscosity and high-fill insulating resin into the potting holes of the connecting end plates, inject it into the potting cavities by vacuum assistance, and cure and form by gradient temperature rise; Quality inspection, Successively carry out quality inspection processes such as magnetic performance scanning, dynamic balance verification, insulation resistance test, etc.

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