High-precision vacuum five-phase motor

Abstract

The invention relates to the technical field of five-phase motors, in particular to a high-precision vacuum five-phase motor, which comprises a shell, a stator, a five-phase electromagnetic coil fixed on the stator, a rotor arranged in the shell and a rotating shaft fixed in the rotor, and is characterized in that a plurality of mounting ports are annularly formed in the rotor; a plurality of permanent magnets are respectively arranged in the mounting ports, an adjusting magnetic block is arranged at the bottom end of the five-phase electromagnetic coil, and the permanent magnets carry out magnetic dynamic adjustment through the adjusting magnetic block; a mounting groove is formed in the middle of the rotating shaft, a heat dissipation assembly is arranged in the mounting groove, the heat dissipation assembly comprises a heat dissipation rod, a sealing ring and a sliding ring, and the sealing ring and the sliding ring are fixedly connected to the heat dissipation rod and arranged in the mounting groove; a spherical groove is formed in the side, close to the output end of the rotating shaft, of the mounting groove. Heat generated in the working process of the motor can be transferred, so that efficiency reduction caused by high temperature in the motor is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of five-phase motors, and in particular to a high-precision vacuum five-phase motor. Background Art

[0002] A five-phase motor decomposes three-phase electricity into five-phase electricity, and introduces five stator circuits into the rotor to form five weak magnetic fields. This can greatly improve the efficiency of the motor and reduce noise and vibration. Compared with ordinary three-phase motors, five-phase motors have higher stability when carrying loads and longer lifespan.

[0003] Patent publication number CN107681802A discloses a five-phase generator, including a rotor, a stator and a coil. The stator is arranged inside the rotor and can rotate relative to the stator. 16 N-level permanent magnets and 16 S-level permanent magnets are arranged on the inner circumferential wall of the rotor, and the 16 N-level permanent magnets and 16 S-level permanent magnets are staggered and evenly spaced. 30 winding slots are provided on the outside of the stator, and the 30 winding slots are evenly spaced. The coils are wound on the stator through the winding slots to form five stator windings with a mutual electrical angle of 72°. The five-phase generator and generator system provided by the above patent have an output waveform distortion rate of each phase voltage of no more than 1%, stable operation, and can meet consumer needs.

[0004] However, when the motor is located in a vacuum environment, since heat cannot be dissipated through air convection in a vacuum environment, the internal temperature of the motor rises significantly, resulting in the friction heat generated by the rotation of the shaft and the resistance heat generated by the coil winding being unable to be transferred quickly, affecting the normal operation of the motor. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that the friction heat generated by the rotation of the shaft and the resistance heat generated by the coil winding cannot be quickly transferred, affecting the normal operation of the motor, and to propose a high-precision vacuum five-phase motor.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A high-precision vacuum five-phase motor, comprising: a housing, a stator, a five-phase electromagnetic coil fixed to the stator, a rotor disposed within the housing, and a rotating shaft fixed within the rotor. The motor is characterized in that a plurality of mounting openings are annularly formed on the rotor, a plurality of permanent magnets are respectively disposed within the mounting openings, an adjustment magnetic block is disposed at the bottom end of the five-phase electromagnetic coil, and the magnetic properties of the permanent magnets are dynamically adjusted by the adjustment magnetic block. A mounting groove is provided in the middle of the rotating shaft, and a heat dissipation assembly is provided inside the mounting groove. The heat dissipation assembly includes a heat dissipation rod, a sealing ring and a sliding ring. The sealing ring and the sliding ring are fixedly connected to the heat dissipation rod and are slidably provided inside the mounting groove. A spherical groove is provided on one side of the mounting groove close to the output end of the rotating shaft. The space between the spherical groove and the sealing ring is filled with heat dissipation liquid. A plurality of liquid guide grooves are provided in an annular shape on the side of the spherical groove. The liquid guide grooves are arranged perpendicular to the heat dissipation rod.

[0007] Preferably, the opening of the mounting slot is arranged on a side away from the output end of the rotating shaft, and one end of the heat dissipation rod passes through the opening, and a heat dissipation member is provided at one end of the heat dissipation rod located at the opening of the mounting slot.

[0008] Preferably, the heat sink includes a shaft seat, a plurality of fins, a connecting block and a plurality of heat sinks, the shaft seat is fixed inside the outer shell, and the rotating shaft is rotatably set on the shaft seat, the plurality of fins are fixedly connected to the shaft seat, and the fins are respectively set between the five-phase electromagnetic coils, the connecting block is fixedly connected to the end of the heat sink rod, and the plurality of heat sinks are annularly fixedly connected to the side of the connecting block to form a heat sink wheel.

[0009] Preferably, there is an air film space between the rotating shaft and the shaft seat, the mounting groove opening is set as a truncated cone opening, the connecting block is set as a truncated cone, and an air film adjustment component is provided between the opening of the mounting groove and the connecting block, and the air film adjustment component is used to adjust the air film thickness of the air film space.

[0010] Preferably, the air film adjustment assembly includes an elastic ring and multiple push rods. The elastic ring is fixedly installed inside the opening of the mounting groove. The opening position of the mounting groove is annularly provided with multiple air holes connected to the air film space. The multiple push rods are annularly fixedly connected to the elastic ring and are sealingly slidably arranged inside the air holes.

[0011] Preferably, the elastic ring is a truncated cone-shaped ring, and one end close to the permanent magnet is fixedly connected to the mounting groove, and the other end has an extrusion space with the opening side wall of the mounting groove.

[0012] Preferably, a counterweight ball is provided at one end of the heat dissipation rod located in the spherical groove through an elastic rod, and the counterweight ball is made of metal material and is used to adjust the center of gravity position of the rotating shaft.

[0013] Preferably, the position where the liquid-conducting groove communicates with the spherical groove is cylindrical, and the end of the liquid-conducting groove is spherical, forming a balance ring.

[0014] Preferably, a clamping assembly is provided between the rotating shaft and the connecting block, and the clamping assembly is used to connect the rotating shaft and the connecting block so that the rotating shaft drives the connecting block to rotate.

[0015] Preferably, the clamping assembly includes a plurality of clamping slots and a plurality of clamping blocks, the clamping slots are annularly opened at the end of the rotating shaft, the clamping blocks are fixedly connected to a side of the connecting block close to the clamping slots, and the clamping slots and the clamping blocks are both hemispherical.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. During the operation of the motor, the five-phase electromagnetic coils and the rotor will still generate heat due to resistance. This heat will diffuse inside the casing. The installation groove inside the shaft is provided with a heat dissipation liquid, which absorbs the generated heat and transfers the absorbed heat to the outside through the heat dissipation rod (the heat dissipation rod is equivalent to the fast heat exchange tube made of heat conductive materials such as sodium inside the shaft), thereby avoiding the internal temperature of the motor being too high and affecting the working efficiency of the motor; 2. During the operation of the motor, the multiple permanent magnets offset on the rotor and the adjustment magnetic block set at the bottom of the five-phase electromagnetic coil change the magnetic field on the adjustment magnetic block, thereby achieving magnetic suspension support for the rotating shaft, reducing the mechanical friction of the rotating shaft on the connecting parts at both ends during rotation, thereby reducing heat generation; 3. The housing and fins are made of high thermal conductivity silicon carbide aluminum composite material. During the operation of the motor, the fins and housing can absorb and transfer the resistance heat generated by the electromagnetic coil. The contact position of the fins is located in the vacuum cavity of the housing, thereby avoiding high temperature inside the motor and ensuring the overall heat dissipation effect of the motor. 4. The connecting block squeezes the elastic ring, pushing the push rod outward, squeezing the gas originally inside the air hole into the air film space, thereby thickening the air film and increasing the extrusion force received by the shaft in all directions. When the shaft deviates and needs to be adjusted, the greater extrusion force will have a better limiting effect at the connection between the shaft and the shaft seat; 5. The counterweight ball forms a rotating body during its rotation. When the center of gravity of the shaft shifts, the rotating body formed by the counterweight ball will move closer to the other side of the shaft due to its own inertia, thereby quickly adjusting the center of gravity of the entire shaft and reducing the vibration amplitude caused by the deviation of the center of gravity of the shaft. 6. Magnetic blocks are designed inside the card slot and on the card block to facilitate the alignment between the card block and the card slot, so that the shaft can drive the heat dissipation rod to rotate synchronously during the rotation process, avoiding mutual wear between internal parts and ensuring the service life of internal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front structure of a high-precision vacuum five-phase motor proposed by the present invention; Figure 2 This is a schematic cross-sectional view of a high-precision vacuum five-phase motor proposed in the present invention; Figure 3 This is a schematic diagram of the internal structure of a high-precision vacuum five-phase motor proposed by the present invention; Figure 4 This is a schematic diagram of the structure of the five-phase electromagnetic coil of a high-precision vacuum five-phase motor proposed by the present invention; Figure 5 This is a schematic diagram of the rotor structure of a high-precision vacuum five-phase motor proposed by the present invention; Figure 6 This is a schematic diagram of the rotor end structure of a high-precision vacuum five-phase motor proposed by the present invention; Figure 7 This is a schematic diagram of the heat dissipation component structure of a high-precision vacuum five-phase motor proposed by the present invention; Figure 8 This is a schematic cross-sectional structure diagram of a heat dissipation assembly of a high-precision vacuum five-phase motor proposed by the present invention; Figure 9 for Figure 8 Enlarged view of point A in the middle.

[0018] In the figure: 1. Housing; 2. Rotor; 3. Rotating shaft; 4. Mounting slot; 5. Permanent magnet; 6. Heat dissipation assembly; 61. Heat dissipation rod; 62. Sealing ring; 63. Sliding ring; 7. Heat dissipation part; 71. Shaft seat; 72. Fin; 73. Connecting block; 74. Heat sink; 8. Air film adjustment assembly; 81. Elastic ring; 82. Push rod; 9. Clamping assembly; 91. Clamping slot; 92. Clamping block; 10. Five-phase electromagnetic coil; 11. Liquid guide groove; 12. Counterweight ball; 13. Adjusting magnetic block. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] The terms "upper", "lower", "left", "right", "middle" and "one" used in the present invention are only for the convenience of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of the present invention without substantially changing the technical content.

[0021] Reference Figures 1-9 A high-precision vacuum five-phase motor comprises: a housing 1, a stator, a five-phase electromagnetic coil 10 fixed to the stator, a rotor 2 disposed inside the housing 1, and a rotating shaft 3 fixed to the rotor 2. The rotor 2 is provided with a plurality of mounting openings in an annular shape, and a plurality of permanent magnets 5 are respectively disposed inside the plurality of mounting openings. An adjusting magnetic block 13 is provided at the bottom end of the five-phase electromagnetic coil 10, and the magnetic properties of the permanent magnets 5 are dynamically adjusted by adjusting the magnetic block 13. A mounting groove 4 is formed in the middle of the rotating shaft 3, and a heat dissipation assembly 6 is provided inside the mounting groove 4. The heat dissipation assembly 6 includes a heat dissipation rod 61, a sealing ring 62 and a sliding ring 63. The sealing ring 62 and the sliding ring 63 are fixedly connected to the heat dissipation rod 61 and are slidably provided inside the mounting groove 4. A spherical groove is provided on one side of the mounting groove 4 close to the output end of the rotating shaft 3 , and heat dissipation liquid is filled between the spherical groove and the sealing ring 62 . A plurality of liquid guide grooves 11 are provided in an annular shape on the side of the spherical groove, and the liquid guide grooves 11 are arranged perpendicular to the heat dissipation rod 61 .

[0022] In the embodiment of the above technical solution, during the operation of the motor, the magnetic field on the adjusting magnetic block 13 is changed by the multiple permanent magnets 5 offset on the rotor 2 and the adjusting magnetic block 13 provided at the bottom end of the five-phase electromagnetic coil 10. (Since the multiple permanent magnets 5 are symmetrically arranged, the magnetic lengths generated between the permanent magnets 5 will cancel each other out during magnetic adjustment, without affecting the normal magnetic field of the coil. The existing magnetic bearing has a similar structure inside) to achieve magnetic suspension support for the rotating shaft 3, thereby reducing the mechanical friction of the rotating shaft 3 on the connecting parts at both ends during rotation, thereby reducing heat generation. However, during the operation of the motor, the five-phase electromagnetic coil 10 and the rotor 2 will still generate heat due to resistance, and this part of the heat will diffuse inside the housing 1. The installation groove 4 inside the rotating shaft 3 is provided with a heat dissipation liquid, which absorbs the generated heat and transfers the absorbed heat to the outside through the heat dissipation rod 61 (the heat dissipation rod 61 is equivalent to the fast heat exchange tube made of heat-conducting materials such as sodium inside the rotating shaft 3), thereby avoiding the internal temperature of the motor from being too high and affecting the working efficiency of the motor.

[0023] During the rotation of the shaft 3, the heat dissipation liquid is driven to rotate. Due to the centrifugal effect, the heat dissipation liquid is squeezed and transferred to the outer liquid guide groove 11, so that the heat dissipation liquid is close to the permanent magnet 5, which can quickly absorb and transfer the heat inside the permanent magnet 5, thereby avoiding high-temperature demagnetization of the permanent magnet 5.

[0024] The present invention can transfer the heat generated during the operation of the motor, thereby avoiding the reduction of efficiency caused by high temperature inside the motor.

[0025] The preferred technical solution in this embodiment is: Reference Figure 2 and Figure 5 The opening of the mounting groove 4 is arranged on a side away from the output end of the rotating shaft 3, and one end of the heat dissipation rod 61 passes through the opening. The heat dissipation rod 61 is provided with a heat dissipation member 7 at one end of the opening of the mounting groove 4; The heat sink 7 includes a shaft seat 71, multiple fins 72, a connecting block 73 and multiple heat sinks 74. The shaft seat 71 is fixed inside the housing 1, and the rotating shaft 3 is rotatably set on the shaft seat 71. The multiple fins 72 are fixedly connected to the shaft seat 71, and the fins 72 are respectively set between the five-phase electromagnetic coils 10. The connecting block 73 is fixedly connected to the end of the heat dissipation rod 61, and the multiple heat sinks 74 are annularly fixedly connected to the side of the connecting block 73 to form a heat dissipation wheel.

[0026] During the operation of the motor, friction heat is generated at the connection between the rotating shaft 3 and the shaft seat 71. During the heat generation process, the heat moves along the rod portion of the rotating shaft 3 to the position of the heat dissipation liquid. The heat generated on the rotating shaft 3 is absorbed by the heat dissipation liquid and then transferred to the heat sink 74 through the heat dissipation rod 61, thereby completing the heat absorption of the rotating shaft 3 and the rotor 2. The plurality of liquid guide grooves 11 close to the permanent magnets 5 can quickly absorb the heat on the permanent magnets 5 and transfer the heat at the same time, thereby preventing the permanent magnets 5 from being demagnetized due to high temperature, thereby affecting the magnetic suspension support of the rotating shaft 3; The shell 1 and the fins 72 are made of a high thermal conductivity silicon carbide aluminum composite material. During the operation of the motor, the fins 72 and the shell 1 can absorb and transfer the resistance heat generated by the electromagnetic coil. The contact position of the fins 72 is located in the vacuum cavity of the shell 1, thereby avoiding the high temperature inside the motor and ensuring the overall heat dissipation effect of the motor.

[0027] Reference Figure 8 and Figure 9 There is an air film space between the rotating shaft 3 and the shaft seat 71, the opening of the mounting groove 4 is set to a truncated cone opening, the connecting block 73 is set to a truncated cone shape, and an air film adjustment component 8 is provided between the opening of the mounting groove 4 and the connecting block 73. The air film adjustment component 8 is used to adjust the air film thickness of the air film space; The air film adjustment assembly 8 includes an elastic ring 81 and a plurality of push rods 82. The elastic ring 81 is fixedly mounted inside the opening of the mounting groove 4. The opening of the mounting groove 4 is provided with a plurality of air holes in an annular shape that communicate with the air film space. The plurality of push rods 82 are annularly fixedly connected to the elastic ring 81 and are sealingly and slidably arranged inside the air holes. The elastic ring 81 is a truncated cone-shaped ring, and one end close to the permanent magnet 5 is fixedly connected to the installation groove 4 , while the other end has an extrusion space with the opening side wall of the installation groove 4 .

[0028] Due to the friction between the rotating shaft 3 and the shaft seat 71, traditional lubricants are easy to evaporate or solidify in a vacuum environment, resulting in an increase in the friction coefficient, which affects the rotation of the rotating shaft 3. By forming an air film space between the rotating shaft 3 and the shaft seat 71, an air film will be formed inside the air film space during the rotation of the rotating shaft 3. The friction coefficient generated by the air film during the rotation is small and will not be affected by the vacuum environment, thereby reducing the disadvantages of traditional lubricants during use. At the same time, the air film can automatically adjust when the magnetic levitation rotating shaft 3 is deflected.

[0029] During the rotation of the shaft 3, due to the action of centrifugal force, the heat dissipation liquid (by setting some gas or liquid that is not easily soluble in the heat dissipation liquid inside the spherical groove, this gas or liquid dissolves in the heat dissipation liquid under the extrusion of centrifugal force, causing the internal volume to decrease, thereby causing the heat dissipation rod 61 to slide) will be centrifugally thrown into the liquid guide groove 11, thereby driving the sealing ring 62 to slide toward the position of the liquid guide groove 11, and driving the heat dissipation rod 61 to slide inward. During the movement of the heat dissipation rod 61, the connecting block 73 at the end will move toward the position of the opening of the mounting groove 4, and the connecting block 73 squeezes the elastic ring 81, thereby pushing the push rod 82 outward, squeezing the gas originally located inside the air hole into the air film space, thereby thickening the thickness of the air film and increasing the extrusion force received by the shaft 3 in all directions. When the shaft 3 is offset for adjustment, the greater extrusion force will have a better limiting effect at the connection position between the shaft 3 and the shaft seat 71.

[0030] Reference Figure 7 and Figure 8 The heat dissipation rod 61 is located at one end of the spherical groove and is provided with a weight ball 12 through an elastic rod. The weight ball 12 is made of metal and is used to adjust the center of gravity position of the rotating shaft 3; The position where the liquid-conducting groove 11 communicates with the spherical groove is cylindrical, and the end of the liquid-conducting groove 11 is spherical, forming a balance ring.

[0031] During use, due to the change of the center of gravity or the electromagnetic field, the center of gravity of the shaft 3 is shifted, causing the shaft 3 to generate an unbalanced torque, which can easily cause the shaft 3 to vibrate. By setting a counterweight ball 12 inside the rotating shaft 3, the counterweight ball 12 will form a rotating body during the rotation process. When the center of gravity of the rotating shaft 3 shifts, the rotating body formed by the counterweight ball 12 will move closer to the other side of the rotating shaft 3 due to its own inertia, thereby quickly balancing the center of gravity of the entire rotating shaft 3 and reducing the vibration amplitude caused by the center of gravity of the rotating shaft 3 shifting.

[0032] During the rotation of the shaft 3, the heat dissipation liquid is introduced into the liquid guide groove 11 by centrifugal force, thereby forming a plurality of counterweight areas that are squeezed outward on the shaft 3. These counterweight areas are interconnected to form a dynamic balance ring. When the shaft 3 deviates, the dynamic balance ring can quickly adjust the balance of the shaft 3 to reduce the vibration of the shaft 3.

[0033] Reference Figure 8 and Figure 9 A clamping assembly 9 is provided between the rotating shaft 3 and the connecting block 73, and the clamping assembly 9 is used to connect the rotating shaft 3 and the connecting block 73 so that the rotating shaft 3 drives the connecting block 73 to rotate; The clamping assembly 9 includes a plurality of clamping slots 91 and a plurality of clamping blocks 92. The clamping slot 91 is annularly opened at the end of the rotating shaft 3. The clamping block 92 is fixedly connected to the side of the connecting block 73 close to the clamping slot 91. Both the clamping slot 91 and the clamping block 92 are hemispherical.

[0034] When the rotating shaft 3 rotates and the heat dissipation rod 61 does not rotate, it is easy for the sealing ring 62 and the sliding ring 63 fixed on the heat dissipation rod 61 to rub against the inner wall of the mounting groove 4, and at the same time cause the elastic ring 81 and the connecting block 73 to rub, resulting in heat generation, and affecting the service life of the sealing ring 62, the sliding ring 63 and the elastic ring 81.

[0035] When the heat dissipation rod 61 slides into the installation groove 4 due to the transfer of the heat dissipation liquid, the multiple blocks 92 fixed on the connecting block 73 will be engaged with the multiple slots 91 at the end of the rotating shaft 3. Magnetic blocks are designed inside the slots 91 and on the blocks 92 to facilitate the alignment between the blocks 92 and the slots 91, so that the rotating shaft 3 can drive the heat dissipation rod 61 to rotate synchronously during the rotation process, avoiding mutual wear between internal parts and ensuring the service life of the internal parts.

[0036] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A high-precision vacuum five-phase motor, comprising: A housing, a stator, a five-phase electromagnetic coil fixed to the stator, a rotor disposed inside the housing, and a rotating shaft fixed in the rotor, characterized in that a plurality of mounting openings are annularly opened on the rotor, a plurality of permanent magnets are respectively disposed inside the plurality of mounting openings, an adjustment magnetic block is disposed at the bottom end of the five-phase electromagnetic coil, and the magnetic properties of the permanent magnets are dynamically adjusted by the adjustment magnetic block; A mounting groove is provided in the middle of the rotating shaft, and a heat dissipation assembly is provided inside the mounting groove. The heat dissipation assembly includes a heat dissipation rod, a sealing ring and a sliding ring. The sealing ring and the sliding ring are fixedly connected to the heat dissipation rod and are slidably provided inside the mounting groove. A spherical groove is provided on one side of the mounting groove close to the output end of the rotating shaft. The space between the spherical groove and the sealing ring is filled with heat dissipation liquid. A plurality of liquid guide grooves are provided in an annular shape on the side of the spherical groove. The liquid guide grooves are arranged perpendicular to the heat dissipation rod.

2. A high-precision vacuum five-phase motor according to claim 1, characterized in that: The opening of the mounting slot is arranged on a side away from the output end of the rotating shaft, and one end of the heat dissipation rod passes through the opening. A heat dissipation member is arranged on the end of the heat dissipation rod located at the opening of the mounting slot.

3. A high-precision vacuum five-phase motor according to claim 2, characterized in that: The heat sink includes a shaft seat, multiple fins, a connecting block and multiple heat sinks. The shaft seat is fixed inside the shell, and the rotating shaft is rotatably set on the shaft seat. The multiple fins are fixedly connected to the shaft seat, and the fins are respectively set between the five-phase electromagnetic coils. The connecting block is fixedly connected to the end of the heat sink rod, and the multiple heat sinks are annularly fixedly connected to the side of the connecting block to form a heat sink wheel.

4. A high-precision vacuum five-phase motor according to claim 3, characterized in that: There is an air film space between the rotating shaft and the shaft seat, the installation groove opening is set to a truncated cone opening, the connecting block is set to a truncated cone shape, and an air film adjustment component is set between the opening of the installation groove and the connecting block. The air film adjustment component is used to adjust the air film thickness of the air film space.

5. A high-precision vacuum five-phase motor according to claim 4, characterized in that: The air film adjustment component includes an elastic ring and multiple push rods. The elastic ring is fixedly installed inside the opening of the installation groove. The opening position of the installation groove is annularly provided with multiple air holes connected to the air film space. The multiple push rods are annularly fixedly connected to the elastic ring and are sealingly slidably arranged inside the air holes.

6. A high-precision vacuum five-phase motor according to claim 5, characterized in that: The elastic ring is a truncated cone-shaped ring, and one end close to the permanent magnet is fixedly connected to the mounting groove, while the other end has an extrusion space with the opening side wall of the mounting groove.

7. The high-precision vacuum five-phase motor according to claim 1, characterized in that: A counterweight ball is provided at one end of the heat dissipation rod located in the spherical groove through an elastic rod. The counterweight ball is made of metal material and is used to adjust the center of gravity position of the rotating shaft.

8. The high-precision vacuum five-phase motor according to claim 1, characterized in that: The position where the liquid-conducting groove communicates with the spherical groove is cylindrical, and the end of the liquid-conducting groove is spherical, forming a balance ring.

9. The high-precision vacuum five-phase motor according to claim 3, characterized in that: A clamping assembly is provided between the rotating shaft and the connecting block, and the clamping assembly is used to connect the rotating shaft and the connecting block so that the rotating shaft drives the connecting block to rotate.

10. The high-precision vacuum five-phase motor according to claim 9, characterized in that: The clamping assembly includes a plurality of clamping slots and a plurality of clamping blocks. The clamping slots are annularly opened at the end of the rotating shaft. The clamping blocks are fixedly connected to a side of the connecting block close to the clamping slots. Both the clamping slots and the clamping blocks are hemispherical.

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