A spherical air-floating spindle structure for high-speed and high-precision equipment

Abstract

The utility model discloses a spherical air-floating spindle structure for high-speed and high-precision equipment, and relates to the technical field of air-floating spindles, an air-floating mechanism, a cutter head mechanism is arranged at one end of the outer wall of the air-floating mechanism, and the cutter head mechanism is used to replace the cutter head, and a cooling mechanism is arranged on the top of the air-floating mechanism, and the cooling mechanism is used to dissipate heat of the air-floating mechanism. The spindle is polished into a spherical structure, and a spherical throttle is matched, and the left hemisphere and the right hemisphere are attached to the inner surface of the spherical throttle, so that the device can have a self-centering function, effectively reducing the assembly error, and the two hemispheres can be ground and polished, and the spherical throttle can be diamond turned, so that the processing error will reach the sub-micron level, and the motor is placed in the middle, so that the electromagnetic force of the motor is near the center of mass of the rotor component, effectively reducing the bending moment generated by the asymmetric electromagnetic force of the motor, so that the rotation error of the air-floating spindle of the device can be less than 25nm, greatly improving the operation accuracy of high-speed and high-precision equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of air-floating spindles, in particular to a spherical air-floating spindle structure for high-speed and high-precision equipment. Background Art

[0002] A diamond lathe uses an air-floating spindle during the machining process. The diamond lathe air-floating spindle is a special lathe spindle design that uses the principle of gas fluid dynamics to form an air film between the spindle and the bearing, so that the spindle is suspended and achieves high-precision rotational motion. The diamond lathe spindle is a lathe spindle wrapped with a diamond coating. Diamond is a very hard material with excellent wear resistance and corrosion resistance. The coated diamond can increase the hardness and wear resistance of the spindle, and improve the machining accuracy and service life of the lathe. The air-floating spindle uses the mechanical properties of the gas to support and suspend the spindle through the pressure and speed of the gas to reduce friction and wear, and improve the rotation accuracy and stability of the lathe spindle. The air-floating spindle is often used in the fields of high-speed machining and precision machining, and can achieve high-speed rotation and high-precision machining effects.

[0003] In the prior art, air-floating spindles all use cylindrical and planar structures, and the processing accuracy and form and position errors can only reach the micron level. The motor is arranged far away from the center of mass of the spindle, and the asymmetric electromagnetic force of the motor produces a large bending moment. Therefore, the rotation error of the air-floating spindle cannot be less than 25nm, which makes it difficult to improve the operating accuracy of high-speed, high-precision equipment. Therefore, a new air-floating spindle is needed. Utility Model Content

[0004] The utility model aims to provide a high-speed and high-precision air-floating spindle structure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spherical air-floating spindle structure for high-speed and high-precision equipment, comprising an air-floating mechanism, a tool head mechanism is arranged at one end of the outer wall of the air-floating mechanism, and the tool head mechanism is used to replace the tool head, a cooling mechanism is arranged on the top of the air-floating mechanism, and the cooling mechanism is used to dissipate heat of the air-floating mechanism;

[0006] The air flotation mechanism includes a protective shell, an inner surface wall of the protective shell is fixedly installed with a fixed sleeve, an inner surface wall of the fixed sleeve is fixedly installed with a stator, and a rotor is arranged on the inner surface wall of the stator, and an axis core is fixedly inserted into the inner surface wall of the rotor, and a connecting shaft is fixedly connected to one end of the outer wall of the axis core, and the outer wall of the axis core is fixedly connected with two axis sleeves, and the outer walls of the two axis sleeves are respectively fixedly installed with a left hemisphere and a right hemisphere, spherical throttles are fixedly installed on both sides of the outer wall of the fixed sleeve, and the inner surfaces of the two spherical throttles are respectively movably sleeved on the outer surfaces of the left hemisphere and the right hemisphere, an airway is opened inside the fixed sleeve, and a first air pipe joint is fixedly connected to the top of the fixed sleeve, and the first air pipe joint is connected to the airway, a group of air paths are opened on the inner surfaces of the two spherical throttles, and a first connecting plate is fixedly installed on one side of the outer wall of the fixed sleeve.

[0007] Preferably, the tool head mechanism includes a fixed seat, one end of the outer wall of the fixed seat is fixedly connected to a connecting tube, a push plate is movably provided on the inner wall of the fixed seat, and a group of first return springs are provided between the push plate and the fixed seat, a pull claw is movably inserted into the inner wall of the connecting tube, and one end of the outer wall of the pull claw is fixedly inserted on the inner wall of the push plate, a piston is movably inserted into the inner wall of the pull claw, and a second return spring is provided on the outer wall of the piston, one end of the outer wall of the pull claw is movably inserted with a quick-connect connector, and the top of the fixed seat is fixedly connected to a second air pipe connector.

[0008] Preferably, a metal plate is fixedly sleeved on the outer wall of the connecting tube, a water pipe joint is fixedly connected to the top of the metal plate, and the water pipe joint is connected to the water channel inside the metal plate, and a group of high-pressure nozzles are fixedly connected to one end of the outer wall of the metal plate, and each high-pressure nozzle is connected to the water channel inside the metal plate.

[0009] Preferably, a second connecting plate is fixedly mounted on one side of the outer wall of the fixing seat, and the second connecting plate is fixedly connected to the first connecting plate by bolts.

[0010] Preferably, the cooling mechanism comprises a semiconductor refrigeration plate, a heat conducting plate is fixedly mounted on the bottom of the semiconductor refrigeration plate, a heat sink fin is fixedly mounted on the top of the semiconductor refrigeration plate, and a silent fan is fixedly mounted on the inner surface wall of the heat sink fin.

[0011] Preferably, a protective tube is fixedly mounted on the inner surface wall of the heat dissipation fin, and a grille is fixedly mounted on the inner surface wall of the protective tube.

[0012] Preferably, a circular grating is fixedly mounted on one side of the outer wall of the left hemisphere, and a reading sensor is arranged on the top of the circular grating, and the reading sensor is fixed on one side of the outer wall of the spherical throttle.

[0013] Preferably, a temperature sensor is arranged inside the fixing sleeve, and a sensing end of the temperature sensor is attached to the outer wall of the stator.

[0014] Preferably, a sound insulation board is provided on the inner surface wall of the protective shell, and the sound insulation board is filled with polyurethane foam plastic.

[0015] Preferably, one end of the outer wall of the connecting shaft is movably embedded in the inner wall of the pulling claw, and the heat conducting plate is fixedly mounted on the outer wall of the fixing sleeve.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. In the utility model, by grinding the spindle into a spherical structure and matching the spherical throttle, the left hemisphere and the right hemisphere are fitted on the inner surface of the spherical throttle, so that the device can have a self-centering function, effectively reducing the assembly error. The two hemispheres can be ground and polished, and the spherical throttle can be diamond turned, so that the processing error will reach the sub-micron level. The device places the motor in the middle, so that the electromagnetic force of the motor is near the center of mass of the rotor component, effectively reducing the bending moment generated by the asymmetric electromagnetic force of the motor, so that the rotation error of the air-floating spindle of the device can be less than 25nm, thereby greatly improving the operation accuracy of high-speed and high-precision equipment.

[0018] 2. In the utility model, by setting up a tool head mechanism, various components such as a push plate, a return spring, a pull claw, a piston, etc. are used in conjunction with each other during operation to realize automatic tool changing action, which has significant advantages such as fast, efficient, safe, and stable. Compared with traditional knives, pneumatic tool changing can save more operation time and greatly improve production efficiency. In addition, the pneumatic spindle can also ensure accuracy during the tool changing process, improve processing accuracy and product quality, and safety is also greatly improved.

[0019] 3. In the present invention, by providing a temperature sensor, the temperature of the stator can be monitored in real time, thereby preventing the device from being damaged due to overheating. By cooling the air flotation mechanism through the cooling structure, the working time of the device can be increased, the efficiency of product processing can be improved, and the service life and safety of the device can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main view of a spherical air-floating spindle structure for high-speed and high-precision equipment of the utility model;

[0021] Figure 2 This is a schematic structural diagram of a cross-section of a spherical air-floating spindle used in a high-speed and high-precision device of the utility model;

[0022] Figure 3This is a schematic structural diagram of the main view of the air-floating mechanism in a spherical air-floating spindle structure for high-speed and high-precision equipment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure inside the air-floating mechanism in a spherical air-floating spindle structure for high-speed and high-precision equipment of the utility model;

[0024] Figure 5 This is a schematic structural diagram of a cross-section of an air-floating mechanism in a spherical air-floating spindle structure for high-speed and high-precision equipment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the explosion of the air-floating mechanism in a spherical air-floating spindle structure for high-speed and high-precision equipment of the utility model;

[0026] Figure 7 This is a schematic diagram of the structure of a cutter head mechanism in a spherical air-floating spindle structure for high-speed and high-precision equipment of the utility model;

[0027] Figure 8 This is a schematic structural diagram of a cutter head mechanism of a spherical air-floating spindle structure for high-speed and high-precision equipment of the utility model;

[0028] Fig. 9 The utility model is a schematic structural diagram of a cooling mechanism in a spherical air-floating spindle structure for high-speed and high-precision equipment.

[0029] In the figure: 1. air flotation mechanism; 10. protective shell; 11. fixing sleeve; 12. stator; 13. rotor; 14. shaft core; 15. connecting shaft; 16. shaft sleeve; 17. left hemisphere; 18. right hemisphere; 19. spherical throttle; 110. air passage; 111. first air pipe joint; 112. air path; 113. circular grating; 114. reading sensor; 115. temperature sensor; 116. first connecting plate; 117. sound insulation board; 2. cutter head mechanism; 20. Fixed seat; 21. Connecting tube; 22. Push plate; 23. First return spring; 24. Pull claw; 25. Piston; 26. Second return spring; 27. Quick connector; 28. Second air pipe connector; 29. ​​Metal plate; 210. Water pipe connector; 211. High-pressure nozzle; 212. Second connecting plate; 3. Cooling mechanism; 30. Semiconductor refrigeration plate; 31. Heat conduction plate; 32. Heat sink fins; 33. Silent fan; 34. Protective tube; 35. Grille. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1

[0032] Reference Figure 1-Figure 9 As shown: a spherical air-floating spindle structure for high-speed and high-precision equipment, including an air-floating mechanism 1, a tool head mechanism 2 is arranged at one end of the outer wall of the air-floating mechanism 1, and the tool head mechanism 2 is used to replace the tool head, and a cooling mechanism 3 is arranged on the top of the air-floating mechanism 1, and the cooling mechanism 3 is used for heat dissipation of the air-floating mechanism 1;

[0033] The air flotation mechanism 1 includes a protective shell 10, a fixed sleeve 11 is fixedly installed on the inner surface wall of the protective shell 10, a stator 12 is fixedly installed on the inner surface wall of the fixed sleeve 11, and a rotor 13 is arranged on the inner surface wall of the stator 12, and a shaft core 14 is fixedly inserted into the inner surface wall of the rotor 13, and a connecting shaft 15 is fixedly connected to one end of the outer wall of the shaft core 14, and two shaft sleeves 16 are fixedly installed on the outer wall of the shaft core 14, and the outer walls of the two shaft sleeves 16 are respectively fixedly installed with a left hemisphere 17 and a right hemisphere 18, and the fixed sleeve 11 is fixedly installed with a fixed sleeve 11. Spherical throttles 19 are fixedly installed on both sides of the outer wall, and the inner walls of the two spherical throttles 19 are movably mounted on the outer walls of the left hemisphere 17 and the right hemisphere 18 respectively. An air passage 110 is opened inside the fixed sleeve 11, and a first air pipe joint 111 is fixedly connected to the top of the fixed sleeve 11, and the first air pipe joint 111 is connected to the air passage 110. A group of air paths 112 are opened on the inner walls of the two spherical throttles 19, and a first connecting plate 116 is fixedly installed on one side of the outer wall of the fixed sleeve 11.

[0034] The effect achieved by the entire embodiment 1 is that a permanent magnet synchronous motor structure is adopted, the stator 12 is fixed to the inner surface wall of the fixed sleeve 11 and is located at the center of the fixed sleeve 11, and the rotor 13 is regulated by an external driving regulator. During the rotation of the rotor 13, the shaft core 14 is driven to rotate, and then the left hemisphere 17 and the right hemisphere 18 are driven to rotate. At this time, the compressed gas is passed into the airway 110 through the first air pipe joint 111, and then enters the air path 112 through the airway 110, and then enters the spherical gap through the annular slits on the two spherical throttles 19, and the entire The rotor components are suspended, so that the entire rotor component can achieve high-precision rotational motion. Since the main shaft is a spherical structure and cooperates with the spherical throttle 19, the left hemisphere 17 and the right hemisphere 18 are fitted on the inner surface of the spherical throttle 19, so that the device can have a self-centering function, which effectively reduces the assembly error. Since the motor is placed in the middle of the device, the electromagnetic force of the motor is near the center of mass of the rotor component, which effectively reduces the bending moment generated by the asymmetric electromagnetic force of the motor, so that the rotation error of the air-floating main shaft of the device can be less than 25nm, thereby greatly improving the operation accuracy of high-speed and high-precision equipment.

[0035] Example 2

[0036] according to Figure 2 , Figure 7 and Figure 8 As shown, the cutter head mechanism 2 includes a fixed seat 20, one end of the outer wall of the fixed seat 20 is fixedly connected to a connecting tube 21, a push plate 22 is movably provided on the inner surface wall of the fixed seat 20, and a group of first return springs 23 are provided between the push plate 22 and the fixed seat 20, a pull claw 24 is movably inserted into the inner surface wall of the connecting tube 21, and one end of the outer wall of the pull claw 24 is fixedly inserted into the inner surface wall of the push plate 22, a piston 25 is movably inserted into the inner surface wall of the pull claw 24, and a second return spring 26 is provided on the outer wall of the piston 25, and a quick-connect connector 27 is movably inserted into the outer wall of the pull claw 24, and the fixed A second air pipe joint 28 is fixedly connected to the top of the seat 20, a metal plate 29 is fixedly sleeved on the outer wall of the connecting tube 21, a water pipe joint 210 is fixedly connected to the top of the metal plate 29, and the water pipe joint 210 is connected to the water channel inside the metal plate 29, a group of high-pressure nozzles 211 are fixedly connected to one end of the outer wall of the metal plate 29, and each high-pressure nozzle 211 is connected to the water channel inside the metal plate 29, a second connecting plate 212 is fixedly installed on one side of the outer wall of the fixed seat 20, and the second connecting plate 212 is fixedly connected to the first connecting plate 116 by bolts.

[0037] The effect achieved by the entire embodiment 2 is that the compressed gas enters the interior of the fixed seat 20 through the second air pipe connector 28, and under the action of the compressed gas, the push plate 22 can be pushed forward, and in the process of pushing the push plate 22 forward, the pull claw 24 can be pushed forward, and then the piston 25 can be pushed forward, at this time the quick-plug connector 27 will be unlocked and then pushed out, at this time the quick-plug connector 27 is replaced, and then the compressed gas is discharged, and under the action of the first return spring 23 and the second return spring 26, the pull claw 24 and the piston 25 will be pushed back, and then the quick-plug connector 27 can be fixed, thereby completing the rapid replacement of the cutter head, and cooling water can be introduced through the water pipe connector 210, and the cooling water enters the water channel in the metal plate 29 and is then sprayed out through the high-pressure nozzle 211, thereby cooling the cutter head to prevent the cutter head from overheating and damage.

[0038] Example 3

[0039] according to Figure 1 , Figure 2 , Figure 3 and Figure 5 , Figure 6 , Fig. 9 As shown, the cooling mechanism 3 includes a semiconductor refrigeration plate 30, a heat conducting plate 31 is fixedly installed at the bottom of the semiconductor refrigeration plate 30, a heat dissipation fin 32 is fixedly installed at the top of the semiconductor refrigeration plate 30, a silent fan 33 is fixedly installed on the inner surface wall of the heat dissipation fin 32, a protective tube 34 is fixedly installed on the inner surface wall of the heat dissipation fin 32, a grille 35 is fixedly installed on the inner surface wall of the protective tube 34, a circular grating 113 is fixedly installed on one side of the outer wall of the left hemisphere 17, and a reading sensor 114 is arranged on the top of the circular grating 113, and the reading sensor 114 is fixed to one side of the outer wall of the spherical throttle 19, a temperature sensor 115 is arranged inside the fixed sleeve 11, and the sensing end of the temperature sensor 115 is attached to the outer surface wall of the stator 12, a sound insulation board 117 is arranged on the inner surface wall of the protective shell 10, and the sound insulation board 117 is filled with polyurethane foam plastic, one end of the outer wall of the connecting shaft 15 is movably embedded in the inner surface wall of the pull claw 24, and the heat conducting plate 31 is fixedly installed on the outer wall of the fixed sleeve 11.

[0040] The effect achieved by the entire embodiment 3 is that the rotor 13 generates heat during high-speed rotation, and the heat is transmitted to the fixed sleeve 11 through the stator 12, and then transmitted to the heat conducting plate 31 by the fixed sleeve 11. At this time, the heat absorbing end of the semiconductor refrigeration plate 30 will absorb the heat emitted by the heat conducting plate 31, and then emit it through the heat dissipation end. At this time, starting the silent fan 33 can dissipate the heat at the heat dissipation end, thereby achieving the heat dissipation effect. The grille 35 can protect the silent fan 33. A circle of gratings is engraved on the surface of the circular grating 113. During the rotation of the circular grating 113, the reading sensor 114 can record the number of rotations of the circular grating 113, and the circular grating 113 is fixedly connected to the left hemisphere 17, thereby calculating the number of rotations of the rotor 13. The temperature sensor 115 can monitor the temperature of the surface of the stator 12 in real time to prevent the stator 12 from being damaged due to excessive temperature.

[0041] The method of use and working principle of the device: When in use, first, the second connecting disk 212 is fixedly connected to the first connecting disk 116. At this time, the connecting shaft 15 will be embedded in the inner surface wall of the claw 24. At this time, the entire cutter head mechanism 2 can be fixed on the air flotation mechanism 1. At this time, the speed of the rotor 13 is adjusted by the external driving regulator. During the rotation of the rotor 13, the shaft core 14 will be driven to rotate, and then the left hemisphere 17 and the right hemisphere 18 will be driven to rotate. Then, the compressed gas is passed into the air passage 110 through the first air pipe joint 111, and then enters the air path 112 through the air passage 110, and then enters the spherical gap through the annular slits on the two spherical throttles 19, so that the entire rotor component is suspended, so that the entire rotor component can achieve high precision. Since the spindle is a spherical structure and cooperates with the spherical throttle 19, the left hemisphere 17 and the right hemisphere 18 are fitted on the inner surface of the spherical throttle 19, so that the device has a self-centering function, which effectively reduces the assembly error. Since the motor is placed in the middle of the device, the electromagnetic force of the motor is near the center of mass of the rotor component, which effectively reduces the bending moment generated by the asymmetric electromagnetic force of the motor, so that the rotation error of the air-floating spindle of the device can be less than 25nm, thereby greatly improving the operating accuracy of high-speed and high-precision equipment. The shaft core 14 will drive the connecting shaft 15 to rotate during the rotation process, and then drive the claw 24 to rotate. During the rotation process, the claw 24 will drive the cutter head to rotate. Cooling water can be introduced through the water pipe joint 210, and the cooling The cooling water enters the water channel in the metal plate 29 and is then sprayed out through the high-pressure nozzle 211, thereby cooling the cutter head to prevent the cutter head from being damaged by overheating. When the cutter head needs to be replaced, the compressed gas is passed through the second air pipe joint 28 into the interior of the fixing seat 20. Under the action of the compressed gas, the push plate 22 can be pushed forward. In the process of pushing the push plate 22 forward, the pull claw 24 can be pushed forward, and then the piston 25 can be pushed forward. At this time, the quick-insertion connector 27 will be unlocked and then pushed out. At this time, the quick-insertion connector 27 is replaced, and then the compressed gas is discharged. Under the action of the first return spring 23 and the second return spring 26, the pull claw 24 and the piston 25 will be pushed back, and then the quick-insertion connector 27 can be fixed, thereby completing the quick replacement of the cutter head. During the high-speed rotation, heat is generated, and the heat is transferred to the fixed sleeve 11 through the stator 12, and then transferred to the heat conducting plate 31 by the fixed sleeve 11. At this time, the heat absorbing end of the semiconductor refrigeration plate 30 absorbs the heat emitted by the heat conducting plate 31, and then emits it through the heat dissipation end. At this time, starting the silent fan 33 can dissipate the heat at the heat dissipation end, thereby achieving the heat dissipation effect. A circle of gratings is engraved on the surface of the circular grating 113. During the rotation of the circular grating 113, the reading sensor 114 can record the number of rotations of the circular grating 113, and the circular grating 113 is fixedly connected to the left hemisphere 17, thereby calculating the number of rotations of the rotor 13. Since the cutter head mechanism 2 in the present device is fixedly mounted on one side of the outer wall of the air flotation mechanism 1 by bolts,Therefore, it can be replaced arbitrarily according to the specific usage scenario, which solves the problems raised in the above background.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spherical air-floating spindle structure for high-speed and high-precision equipment, characterized in that: It comprises an air flotation mechanism (1), a cutter head mechanism (2) is arranged at one end of the outer wall of the air flotation mechanism (1), and the cutter head mechanism (2) is used to replace the cutter head, and a cooling mechanism (3) is arranged at the top of the air flotation mechanism (1), and the cooling mechanism (3) is used to dissipate heat of the air flotation mechanism (1); The air flotation mechanism (1) comprises a protective shell (10), the inner surface wall of the protective shell (10) is fixedly mounted with a fixing sleeve (11), the inner surface wall of the fixing sleeve (11) is fixedly mounted with a stator (12), the inner surface wall of the stator (12) is provided with a rotor (13), an inner surface wall of the rotor (13) is fixedly inserted with an axis core (14), one end of the outer wall of the axis core (14) is fixedly connected with a connecting shaft (15), the outer surface wall of the axis core (14) is fixedly mounted with two axis sleeves (16), and the outer surfaces of the two axis sleeves (16) are respectively fixedly mounted with a left hemisphere (17) and a right hemisphere (18), the fixing sleeve (11) is provided with a fixing sleeve (12), and the fixing sleeve (11) is provided with a fixing sleeve (13), wherein the fixing sleeve (11) is provided with a fixing sleeve (1 ... Spherical throttles (19) are fixedly mounted on both sides of the outer wall of the sleeve (11), and the inner walls of the two spherical throttles (19) are movably mounted on the outer walls of the left hemisphere (17) and the right hemisphere (18), respectively. An air passage (110) is provided inside the fixed sleeve (11), and a first air pipe joint (111) is fixedly connected to the top of the fixed sleeve (11), and the first air pipe joint (111) is connected to the air passage (110). A group of air paths (112) are provided on the inner walls of the two spherical throttles (19), and a first connecting plate (116) is fixedly mounted on one side of the outer wall of the fixed sleeve (11).

2. The spherical air-floating spindle structure for high-speed and high-precision equipment according to claim 1, characterized in that: The tool head mechanism (2) comprises a fixed seat (20), one end of the outer wall of the fixed seat (20) is fixedly connected to a connecting tube (21), a push plate (22) is movably provided on the inner wall of the fixed seat (20), and a group of first return springs (23) are provided between the push plate (22) and the fixed seat (20), a pull claw (24) is movably inserted into the inner wall of the connecting tube (21), and one end of the outer wall of the pull claw (24) is fixedly inserted into the inner wall of the push plate (22), a piston (25) is movably inserted into the inner wall of the pull claw (24), and a second return spring (26) is provided on the outer wall of the piston (25), one end of the outer wall of the pull claw (24) is movably inserted into a quick-connect connector (27), and the top of the fixed seat (20) is fixedly connected to a second air pipe connector (28).

3. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 2, characterized in that: The outer wall of the connecting tube (21) is fixedly sleeved with a metal plate (29), the top of the metal plate (29) is fixedly connected to a water pipe joint (210), and the water pipe joint (210) is connected to the water channel inside the metal plate (29), and one end of the outer wall of the metal plate (29) is fixedly connected to a group of high-pressure nozzles (211), and each high-pressure nozzle (211) is connected to the water channel inside the metal plate (29).

4. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 3, characterized in that: A second connection plate (212) is fixedly mounted on one side of the outer wall of the fixing seat (20), and the second connection plate (212) is fixedly connected to the first connection plate (116) by means of bolts.

5. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 4, characterized in that: The cooling mechanism (3) comprises a semiconductor refrigeration plate (30), a heat conducting plate (31) is fixedly mounted on the bottom of the semiconductor refrigeration plate (30), a heat dissipation fin (32) is fixedly mounted on the top of the semiconductor refrigeration plate (30), and a silent fan (33) is fixedly mounted on the inner surface wall of the heat dissipation fin (32).

6. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 5, characterized in that: A protective tube (34) is fixedly mounted on the inner surface wall of the heat dissipation fin (32), and a grille (35) is fixedly mounted on the inner surface wall of the protective tube (34).

7. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 6, characterized in that: A circular grating (113) is fixedly mounted on one side of the outer wall of the left hemisphere (17), and a reading sensor (114) is arranged on the top of the circular grating (113), and the reading sensor (114) is fixed on one side of the outer wall of the spherical throttle (19).

8. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 7, characterized in that: A temperature sensor (115) is arranged inside the fixed sleeve (11), and a sensing end of the temperature sensor (115) is attached to the outer wall of the stator (12).

9. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 8, characterized in that: A sound insulation board (117) is arranged on the inner surface wall of the protective shell (10), and the sound insulation board (117) is filled with polyurethane foam plastic.

10. The spherical air-bearing spindle structure for high-speed and high-precision equipment according to claim 9, characterized in that: One end of the outer wall of the connecting shaft (15) is movably embedded in the inner wall of the pulling claw (24), and the heat conducting plate (31) is fixedly mounted on the outer wall of the fixing sleeve (11).

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