Small flywheel magnetic bearing rotor assembly stacking device and stacking method

Abstract

The invention provides a small flywheel magnetic bearing rotor assembly stacking device and a stacking method, and belongs to the technical field of magnetic suspension flywheel energy storage. A silicon steel sheet positioning mandrel is sleeved with a radial magnetic bearing silicon steel sheet inner pressing ring, a sensor rotor assembly, a silicon steel sheet pressing cover and a plurality of radial magnetic bearing rotor silicon steel sheets; the silicon steel sheet positioning mandrel not only can fix the sensor rotor assembly and the plurality of radial magnetic bearing rotor silicon steel sheets along the axial direction of the silicon steel sheet positioning mandrel, but also can ensure the coaxiality of the sensor rotor assembly and the plurality of radial magnetic bearing rotor silicon steel sheets, the radial magnetic bearing silicon steel sheet inner pressing ring, the silicon steel sheet pressing cover and the silicon steel sheet pressing cylinder are used for limiting the thickness of the sensor rotor assembly and the radial magnetic bearing rotor silicon steel sheets in the axial direction of the silicon steel sheet positioning mandrel, the silicon steel sheet pressing cylinder can be used for further limiting the coaxiality, and the manufacturing quality of the flywheel rotor is improved. And the stability of the suspension stable state of the magnetic suspension flywheel is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic levitation flywheel energy storage, in particular to a small flywheel magnetic bearing rotor assembly stacking device and a stacking method. Background Art

[0002] For a magnetic levitation flywheel, the stator and rotor of the magnetic bearings provide the power source for the magnetic levitation system, while the stator and rotor sensors detect rotor position, making their manufacturing quality crucial. While relatively mature manufacturing processes for magnetic bearings and sensor stators guarantee quality, mature and stable manufacturing processes for magnetic bearings and sensor rotors currently lack mature and stable processes, and rotor manufacturing quality significantly impacts the stability of the magnetic levitation flywheel's suspension.

[0003] Therefore, there is an urgent need for a lamination device and process for controlling the manufacturing quality of magnetic bearings and sensor rotors, ensuring the stability of the magnetic suspension system, and being suitable for small flywheel magnetic bearing rotor assemblies. Summary of the Invention

[0004] In view of this, the present invention proposes a flywheel magnetic bearing rotor assembly lamination device and process thereof, which utilizes a silicon steel sheet positioning core shaft to position a sensor rotor assembly and a plurality of radial magnetic bearing rotor silicon steel sheets to improve installation accuracy.

[0005] The technical solution of the present invention is implemented as follows: a flywheel magnetic bearing rotor assembly lamination device includes a silicon steel sheet positioning core shaft, a sensor rotor assembly, a radial magnetic bearing silicon steel sheet inner pressure ring, a silicon steel sheet pressing cover and a silicon steel sheet pressing cylinder, the silicon steel sheet positioning core shaft is sleeved with a radial magnetic bearing silicon steel sheet inner pressure ring, a sensor rotor assembly, a silicon steel sheet pressing cover and a plurality of radial magnetic bearing rotor silicon steel sheets; the silicon steel sheet pressing cylinder is sleeved on the outside of the sensor rotor assembly and the radial magnetic bearing rotor silicon steel sheet; the silicon steel sheet pressing cover is arranged at one end of the silicon steel sheet pressing cylinder, the radial magnetic bearing silicon steel sheet inner pressure ring is arranged at the other end of the silicon steel sheet pressing cylinder, the silicon steel sheet pressing cover is pressed on the sensor rotor assembly, and the radial magnetic bearing silicon steel sheet inner pressure ring is pressed on the radial magnetic bearing rotor silicon steel sheet.

[0006] Based on the above technical solution, preferably, a bearing plate is provided at one end of the silicon steel sheet positioning core shaft sleeved with the radial magnetic bearing silicon steel sheet inner pressure ring, and the radial magnetic bearing silicon steel sheet inner pressure ring is arranged close to the bearing plate.

[0007] Based on the above technical solution, preferably, the radial magnetic bearing silicon steel sheet inner pressure ring is provided with a first inner hole, the inner diameter of the first inner hole is larger than the outer diameter of the silicon steel sheet positioning core shaft, and the inner diameter of the first inner hole is smaller than the outer contour diameter of the carrier disk.

[0008] On the basis of the above technical solution, preferably, a radial magnetic bearing silicon is arranged between the sensor rotor assembly and the radial magnetic bearing rotor silicon steel sheet; the sensor rotor assembly includes a sensor silicon steel sheet outer pressure ring, a sensor rotor silicon steel sheet and a sensor silicon steel sheet inner pressure, the sensor rotor silicon steel sheet and the sensor silicon steel sheet inner pressure are sleeved on the sensor silicon steel sheet outer pressure ring, and the sensor silicon steel sheet outer pressure ring is sleeved on the silicon steel sheet positioning core shaft.

[0009] On the basis of the above technical solution, preferably, the outer pressure ring of the sensor silicon steel sheet includes a sleeve portion and a press-fit portion, the sleeve portion and the press-fit portion are fixedly connected, the sensor rotor silicon steel sheet and the sensor silicon steel sheet are internally press-fitted on the sleeve portion, and the sensor rotor silicon steel sheet is arranged tightly against the press-fit portion.

[0010] On the basis of the above technical solution, preferably, the silicon steel sheet positioning core shaft is provided with a first lifting hole at one end and a second lifting hole at the other end.

[0011] On the basis of the above technical solution, preferably, the silicon steel sheet pressing cylinder is provided with an upper cylinder end cover and a lower cylinder end cover, the upper cylinder end cover is arranged around the silicon steel sheet pressing cylinder at one end of the silicon steel sheet pressing cylinder, and the lower cylinder end cover is arranged around the silicon steel sheet pressing cylinder at the other end of the silicon steel sheet pressing cylinder.

[0012] On the basis of the above technical solution, preferably, the lower cylinder end cover is placed on the radial magnetic bearing silicon steel sheet inner pressure ring, and bolts are provided between the lower cylinder end cover and the radial magnetic bearing silicon steel sheet inner pressure ring.

[0013] Based on the above technical solution, preferably, the sleeve portion and the upper tube end cover are located on the same plane, the silicon steel sheet press-fit cover is arranged on the sleeve portion and the upper tube end cover, and bolts are arranged between the silicon steel sheet press-fit cover and the upper tube end cover.

[0014] Another technical solution of the present invention is achieved as follows: S1: The sensor rotor silicon steel sheet and the sensor silicon steel sheet internal pressure are heated, and the heating temperature is maintained at 100°C. Then, the sensor rotor silicon steel sheet and the sensor silicon steel sheet internal pressure maintained at 100°C are sequentially heat-fitted onto the sensor silicon steel sheet outer pressure ring, and the interference between the sensor rotor silicon steel sheet and the sensor silicon steel sheet internal pressure is maintained at 0.08-0.12mm; S2: Before assembling the sensor silicon steel sheet outer pressure ring, the sensor rotor silicon steel sheet, and the sensor silicon steel sheet inner pressure, a machining allowance of 0.5mm is reserved for the outer circle; the sensor rotor silicon steel sheet and the sensor silicon steel sheet inner pressure are installed on the sensor silicon steel sheet outer pressure ring by shrink fitting to form the sensor rotor assembly. The outer circle of the sensor rotor assembly is further cut to ensure that the outer circle roughness of the sensor silicon steel sheet outer pressure ring, the sensor rotor silicon steel sheet, and the sensor silicon steel sheet inner pressure is the same, and the joint surface is smooth without gaps or bosses; S3: The first lifting hole and the second lifting hole are respectively connected with an adjusting rod through a thread to control the position of the adjusting rod so that the silicon steel sheet positioning core shaft is kept horizontal, and then the radial magnetic bearing silicon steel sheet inner pressure ring, radial magnetic bearing rotor silicon steel sheet, radial magnetic bearing silicon, sensor rotor assembly and silicon steel sheet pressing cover are sequentially installed on the steel sheet positioning core shaft. The radial magnetic bearing silicon steel sheet inner pressure ring, radial magnetic bearing rotor silicon steel sheet, radial magnetic bearing silicon, sensor rotor assembly and steel sheet positioning core shaft are all clearance-fitted; S4: The silicon steel sheet pressing cover and the upper cylinder end cover, as well as the lower cylinder end cover and the radial magnetic bearing silicon steel sheet inner pressure ring are fastened by bolts. The radial magnetic bearing silicon steel sheet inner pressure ring, the silicon steel sheet pressing cover and the silicon steel sheet pressing cylinder work together to press the radial magnetic bearing rotor silicon steel sheet, radial magnetic bearing silicon, and sensor rotor assembly along the radial direction of the steel sheet positioning core shaft. The silicon steel sheet pressing cylinder and the radial magnetic bearing rotor silicon steel sheet, radial magnetic bearing silicon, and sensor rotor assembly adopt a clearance fit to facilitate disassembly; S5: Remove the silicon steel sheet positioning mandrel and replace it with the motor shaft.

[0015] The quick-release connector of the present invention has the following advantages over the prior art: (1) The silicon steel sheet positioning core shaft can not only fix the sensor rotor assembly and several radial magnetic bearing rotor silicon steel sheets along the axial direction of the silicon steel sheet positioning core shaft, but also ensure the coaxiality of the two. Among them, the radial magnetic bearing silicon steel sheet inner pressure ring, the silicon steel sheet pressing cover and the silicon steel sheet pressing cylinder are used to limit the thickness of the sensor rotor assembly and several radial magnetic bearing rotor silicon steel sheets along the axial direction of the silicon steel sheet positioning core shaft. The silicon steel sheet pressing cylinder can also be used to further limit the coaxiality, thereby improving the manufacturing quality of the flywheel rotor and improving the stability of the suspension stable state of the magnetic levitation flywheel; (2) The carrier plate is used to carry the inner pressure ring of the radial magnetic bearing silicon steel sheet, and to locate the radial position of the inner pressure ring of the radial magnetic bearing silicon steel sheet on the radial direction of the silicon steel sheet positioning core shaft, so as to facilitate more accurate positioning of the sensor rotor assembly and several radial magnetic bearing rotor silicon steel sheets; (3) The sensor rotor silicon steel sheet and the sensor silicon steel sheet internal pressure are sleeved on the sensor silicon steel sheet outer pressure ring to avoid the sensor rotor silicon steel sheet and the sensor silicon steel sheet internal pressure directly contacting the silicon steel sheet positioning core shaft, thereby protecting the sensor rotor silicon steel sheet and the sensor silicon steel sheet internal pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A perspective view of a flywheel magnetic bearing rotor assembly lamination device according to the present invention; Figure 2 For the present invention Figure 1 sectional view of Figure 3 is a perspective view of a sensor rotor assembly of the present invention; Figure 4 This is a three-dimensional diagram of a flywheel magnetic bearing rotor assembly lamination device and a motor shaft according to the present invention. DETAILED DESCRIPTION Example 1

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] like Figure 1-3 As shown, a flywheel magnetic bearing rotor assembly lamination device includes a silicon steel sheet positioning core shaft 1, a sensor rotor assembly 2, a radial magnetic bearing silicon steel sheet inner pressure ring 3, a silicon steel sheet pressing cover 4 and a silicon steel sheet pressing cylinder 5. The silicon steel sheet positioning core shaft 1 is sleeved with the radial magnetic bearing silicon steel sheet inner pressure ring 3, the sensor rotor assembly 2, the silicon steel sheet pressing cover 4 and a plurality of radial magnetic bearing rotor silicon steel sheets 6; the silicon steel sheet pressing cylinder 5 is sleeved on the outside of the sensor rotor assembly 2 and the radial magnetic bearing rotor silicon steel sheets 6; the silicon steel sheet pressing cover 4 is arranged at one end of the silicon steel sheet pressing cylinder 5, and the radial magnetic bearing silicon steel sheet inner pressure ring 3 is arranged at the other end of the silicon steel sheet pressing cylinder 5, the silicon steel sheet pressing cover 4 is pressed on the sensor rotor assembly 2, and the radial magnetic bearing silicon steel sheet inner pressure ring 3 is pressed on the radial magnetic bearing rotor silicon steel sheets 6. The silicon steel sheet positioning core shaft 1 can not only fix the sensor rotor assembly 2 and several radial magnetic bearing rotor silicon steel sheets 6 axially along the silicon steel sheet positioning core shaft 1, but also ensure the coaxiality of the two. Among them, the radial magnetic bearing silicon steel sheet inner pressure ring 3, the silicon steel sheet pressing cover 4 and the silicon steel sheet pressing cylinder 5 are used to limit the thickness of the sensor rotor assembly 2 and several radial magnetic bearing rotor silicon steel sheets 6 along the axial direction of the silicon steel sheet positioning core shaft 1. The silicon steel sheet pressing cylinder 5 can also be used to further limit the coaxiality, thereby improving the manufacturing quality of the flywheel rotor and improving the stability of the suspended stable state of the magnetic levitation flywheel.

[0020] A carrier plate 11 is provided at one end of the silicon steel sheet positioning core shaft 1 that is sleeved with the radial magnetic bearing silicon steel sheet inner pressure ring 3. The radial magnetic bearing silicon steel sheet inner pressure ring 3 is placed closely against the carrier plate 11. The carrier plate 11 is used to carry the radial magnetic bearing silicon steel sheet inner pressure ring 3 and locate the radial position of the radial magnetic bearing silicon steel sheet inner pressure ring 3 on the silicon steel sheet positioning core shaft 1, thereby facilitating more precise positioning of the sensor rotor assembly 2 and the plurality of radial magnetic bearing rotor silicon steel sheets 6.

[0021] The radial magnetic bearing silicon steel sheet inner pressure ring 3 is provided with a first inner hole 31 , the inner diameter of which is larger than the outer diameter of the silicon steel sheet positioning core shaft 1 , and smaller than the outer contour diameter of the carrier plate 11 .

[0022] A radial magnetic bearing silicon 7 is disposed between the sensor rotor assembly 2 and the radial magnetic bearing rotor silicon steel sheets 6. The sensor rotor assembly 2 includes a sensor silicon steel sheet outer pressure ring 21, a sensor rotor silicon steel sheet 22, and a sensor silicon steel sheet internal pressure 23. The sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet internal pressure 23 are sleeved onto the sensor silicon steel sheet outer pressure ring 21, which is sleeved onto the silicon steel sheet positioning core shaft 1. The sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet internal pressure 23 are sleeved onto the sensor silicon steel sheet outer pressure ring 21 to prevent the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet internal pressure 23 from directly contacting the silicon steel sheet positioning core shaft 1, thereby protecting the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet internal pressure 23.

[0023] The sensor silicon steel sheet outer pressure ring 21 includes a sleeve portion 211 and a press portion 212 , which are fixedly connected. The sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet inner pressure 23 are sleeved on the sleeve portion 211 , and the sensor rotor silicon steel sheet 22 is arranged close to the press portion 212 .

[0024] The silicon steel sheet positioning mandrel 1 is provided with a first lifting hole 12 at one end and a second lifting hole 13 at the other end. The first lifting hole 12 and the second lifting hole 13 are used to better lift or control the position of the silicon steel sheet positioning mandrel 1, and can be lifted by equipment to avoid damage to auxiliary devices or workpieces.

[0025] The silicon steel sheet pressing cylinder 5 is provided with an upper cylinder end cover 51 and a lower cylinder end cover 52. The upper cylinder end cover 51 is arranged around the silicon steel sheet pressing cylinder 5 at one end of the silicon steel sheet pressing cylinder 5, and the lower cylinder end cover 52 is arranged around the silicon steel sheet pressing cylinder 5 at the other end of the silicon steel sheet pressing cylinder 5.

[0026] The lower cylinder end cover 52 is placed on the radial magnetic bearing silicon steel sheet inner pressure ring 3 , and bolts are provided between the lower cylinder end cover 52 and the radial magnetic bearing silicon steel sheet inner pressure ring 3 .

[0027] The sleeve portion 211 and the upper cylinder end cover 51 are located on the same plane. The silicon steel sheet pressing cover 4 is arranged on the sleeve portion 211 and the upper cylinder end cover 51 . Bolts are arranged between the silicon steel sheet pressing cover 4 and the upper cylinder end cover 51 . Example 2

[0028] like Figure 1 、 2 As described in 4, a lamination method for a flywheel magnetic bearing rotor assembly lamination device comprises the following steps: S1: Heat the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet internal pressure 23, and keep the heating temperature at 100°C. Then, shrink fit the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet internal pressure 23, which are kept at 100°C, onto the sensor silicon steel sheet outer pressure ring 21 in sequence, and keep the interference between the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet internal pressure 23 at 0.08-0.12mm. S2: Before assembling the sensor silicon steel sheet outer pressure ring 21, the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet inner pressure 23, a machining allowance of 0.5 mm is reserved for the outer circumference; the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet inner pressure 23 are installed on the sensor silicon steel sheet outer pressure ring 21 by shrink fitting to form the sensor rotor assembly 2, and the outer circumference of the sensor rotor assembly 2 is further cut to ensure that the outer circumferences of the sensor silicon steel sheet outer pressure ring 21, the sensor rotor silicon steel sheet 22 and the sensor silicon steel sheet inner pressure 23 have the same roughness and the joint surface is smooth without gaps or bosses; S3: The first lifting hole 12 and the second lifting hole 13 are respectively connected with an adjusting rod through a thread to control the position of the adjusting rod so that the silicon steel sheet positioning core shaft 1 remains horizontal, and then the radial magnetic bearing silicon steel sheet inner pressure ring 3, radial magnetic bearing rotor silicon steel sheet 6, radial magnetic bearing silicon 7, sensor rotor assembly 2 and silicon steel sheet pressing cover 4 are sequentially installed on the steel sheet positioning core shaft 1. The radial magnetic bearing silicon steel sheet inner pressure ring 3, radial magnetic bearing rotor silicon steel sheet 6, radial magnetic bearing silicon 7, sensor rotor assembly 2 and the steel sheet positioning core shaft 1 are all clearance-fitted; S4: The silicon steel sheet pressing cover 4 and the upper cylinder end cover 51, as well as the lower cylinder end cover 52 and the radial magnetic bearing silicon steel sheet inner pressure ring 3 are fastened by bolts. The radial magnetic bearing silicon steel sheet inner pressure ring 3, the silicon steel sheet pressing cover 4 and the silicon steel sheet pressing cylinder 5 work together to press the radial magnetic bearing rotor silicon steel sheet 6, the radial magnetic bearing silicon 7 and the sensor rotor assembly 2 along the radial direction of the steel sheet positioning core shaft 1. The silicon steel sheet pressing cylinder 5 and the radial magnetic bearing rotor silicon steel sheet 6, the radial magnetic bearing silicon 7 and the sensor rotor assembly 2 adopt a clearance fit to facilitate disassembly; S5: Take out the silicon steel sheet positioning core shaft 1 and replace it with the motor shaft 8.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flywheel magnetic bearing rotor assembly lamination device, comprising a radial magnetic bearing silicon steel sheet inner pressure ring (3), a silicon steel sheet pressing cover (4) and a silicon steel sheet pressing cylinder (5), characterized in that: The invention also includes a silicon steel sheet positioning core shaft (1) and a sensor rotor assembly (2). The silicon steel sheet positioning core shaft (1) is sleeved with a radial magnetic bearing silicon steel sheet inner pressure ring (3), a sensor rotor assembly (2), a silicon steel sheet pressing cover (4) and a plurality of radial magnetic bearing rotor silicon steel sheets (6); the silicon steel sheet pressing cylinder (5) is sleeved on the outside of the sensor rotor assembly (2) and the radial magnetic bearing rotor silicon steel sheets (6); the silicon steel sheet pressing cover (4) is arranged at one end of the silicon steel sheet pressing cylinder (5), and the radial magnetic bearing silicon steel sheet inner pressure ring (3) is arranged at the other end of the silicon steel sheet pressing cylinder (5); the silicon steel sheet pressing cover (4) is pressed onto the sensor rotor assembly (2), and the radial magnetic bearing silicon steel sheet inner pressure ring (3) is pressed onto the radial magnetic bearing rotor silicon steel sheets (6).

2. The flywheel magnetic bearing rotor assembly lamination device according to claim 1, characterized in that: One end of the silicon steel sheet positioning core shaft (1) sleeved with the radial magnetic bearing silicon steel sheet inner pressure ring (3) is provided with a bearing plate (11), and the radial magnetic bearing silicon steel sheet inner pressure ring (3) is arranged closely against the bearing plate (11).

3. The flywheel magnetic bearing rotor assembly lamination device according to claim 2, characterized in that: The radial magnetic bearing silicon steel sheet inner pressure ring (3) is provided with a first inner hole (31), the inner diameter of the first inner hole (31) is larger than the outer diameter of the silicon steel sheet positioning core shaft (1), and the inner diameter of the first inner hole (31) is smaller than the outer contour diameter of the carrier plate (11).

4. The flywheel magnetic bearing rotor assembly lamination device according to claim 1, characterized in that: A radial magnetic bearing silicon (7) is provided between the sensor rotor assembly (2) and the radial magnetic bearing rotor silicon steel sheet (6); the sensor rotor assembly (2) comprises a sensor silicon steel sheet outer pressure ring (21), a sensor rotor silicon steel sheet (22) and a sensor silicon steel sheet inner pressure (23); the sensor rotor silicon steel sheet (22) and the sensor silicon steel sheet inner pressure (23) are sleeved on the sensor silicon steel sheet outer pressure ring (21), and the sensor silicon steel sheet outer pressure ring (21) is sleeved on the silicon steel sheet positioning core shaft (1).

5. The flywheel magnetic bearing rotor assembly lamination device according to claim 1, characterized in that: The sensor silicon steel sheet outer pressure ring (21) comprises a sleeve portion (211) and a press-fit portion (212), wherein the sleeve portion (211) and the press-fit portion (212) are fixedly connected, and the sensor rotor silicon steel sheet (22) and the sensor silicon steel sheet inner pressure (23) are sleeved on the sleeve portion (211), and the sensor rotor silicon steel sheet (22) is tightly attached to the press-fit portion (212).

6. The flywheel magnetic bearing rotor assembly lamination device according to claim 1, characterized in that: The silicon steel sheet positioning core shaft (1) is provided with a first lifting hole (12) at one end and a second lifting hole (13) at the other end.

7. The flywheel magnetic bearing rotor assembly lamination device according to claim 5, characterized in that: The silicon steel sheet pressing cylinder (5) is provided with an upper cylinder end cover (51) and a lower cylinder end cover (52), wherein the upper cylinder end cover (51) surrounds the silicon steel sheet pressing cylinder (5) and is arranged at one end of the silicon steel sheet pressing cylinder (5), and the lower cylinder end cover (52) surrounds the silicon steel sheet pressing cylinder (5) and is arranged at the other end of the silicon steel sheet pressing cylinder (5).

8. The flywheel magnetic bearing rotor assembly lamination device according to claim 7, characterized in that: The lower cylinder end cover (52) is placed on the radial magnetic bearing silicon steel sheet inner pressure ring (3), and bolts are provided between the lower cylinder end cover (52) and the radial magnetic bearing silicon steel sheet inner pressure ring (3).

9. The flywheel magnetic bearing rotor assembly lamination device according to claim 7, characterized in that: The sleeve portion (211) and the upper cylinder end cover (51) are located on the same plane, the silicon steel sheet pressing cover (4) is arranged on the sleeve portion (211) and the upper cylinder end cover (51), and bolts are arranged between the silicon steel sheet pressing cover (4) and the upper cylinder end cover (51).

10. A method for laminating a flywheel magnetic bearing rotor assembly lamination device, comprising the flywheel magnetic bearing rotor assembly lamination device according to claim 9, characterized in that: Here are the steps: S1: The sensor rotor silicon steel sheet (22) and the sensor silicon steel sheet internal pressure (23) are subjected to a heating treatment, and the heating temperature is maintained at 100°C. Then, the sensor rotor silicon steel sheet (22) and the sensor silicon steel sheet internal pressure (23) maintained at a temperature of 100°C are sequentially heat-fitted onto the sensor silicon steel sheet outer pressure ring (21), and the interference of the sensor rotor silicon steel sheet (22) and the sensor silicon steel sheet internal pressure (23) is maintained at 0.08~0.12mm; S2: A machining allowance of 0.5 mm is reserved for the outer circumference of the sensor silicon steel sheet outer pressure ring (21), the sensor rotor silicon steel sheet (22), and the sensor silicon steel sheet inner pressure (23) before assembly; the sensor rotor silicon steel sheet (22) and the sensor silicon steel sheet inner pressure (23) are mounted on the sensor silicon steel sheet outer pressure ring (21) by heat-fitting to form the sensor rotor assembly (2), and the outer circumference of the sensor rotor assembly (2) is further cut to ensure that the outer circumferences of the sensor silicon steel sheet outer pressure ring (21), the sensor rotor silicon steel sheet (22), and the sensor silicon steel sheet inner pressure (23) have the same roughness and the joint surfaces are smooth without gaps or bosses; S3: The first hoisting hole (12) and the second hoisting hole (13) are respectively connected with an adjusting rod through a thread to control the position of the adjusting rod so that the silicon steel sheet positioning core shaft (1) is kept horizontal, and then the radial magnetic bearing silicon steel sheet inner pressure ring (3), the radial magnetic bearing rotor silicon steel sheet (6), the radial magnetic bearing silicon (7), the sensor rotor assembly (2) and the silicon steel sheet pressing cover (4) are sequentially installed on the steel sheet positioning core shaft (1), and the radial magnetic bearing silicon steel sheet inner pressure ring (3), the radial magnetic bearing rotor silicon steel sheet (6), the radial magnetic bearing silicon (7), the sensor rotor assembly (2) and the steel sheet positioning core shaft (1) are all clearance-fitted; S4: The silicon steel sheet pressing cover (4) and the upper cylinder end cover (51), as well as the lower cylinder end cover (52) and the radial magnetic bearing silicon steel sheet inner pressure ring (3) are fastened by bolts. The radial magnetic bearing silicon steel sheet inner pressure ring (3), the silicon steel sheet pressing cover (4) and the silicon steel sheet pressing cylinder (5) work together to press the radial magnetic bearing rotor silicon steel sheet (6), the radial magnetic bearing silicon (7) and the sensor rotor assembly (2) along the radial direction of the steel sheet positioning core shaft (1). The silicon steel sheet pressing cylinder (5) and the radial magnetic bearing rotor silicon steel sheet (6), the radial magnetic bearing silicon (7) and the sensor rotor assembly (2) are clearance-fitted for easy disassembly. S5: Remove the silicon steel sheet positioning mandrel (1) and replace it with the motor shaft (8).

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