Precise boring device for rotor cavity of centrifugal machine and using method of precise boring device

Abstract

The invention discloses a precise boring device for a rotor cavity of a centrifugal machine, which comprises a main body unit, a boring unit and a boring unit, the firmware unit comprises a first bottom plate, a second bottom plate is slidably connected to the first bottom plate in the left-right direction, a first adjusting assembly is arranged on the operation table, a second adjusting assembly is arranged on the right side of the first bottom plate, and a plurality of fixing assemblies are arranged on the second bottom plate; and the machining unit comprises a second electric telescopic rod, a mounting assembly is arranged at the bottom end of the second electric telescopic rod, a cover plate is slidably connected to the movable end of the second electric telescopic rod, a cooling assembly is arranged at the bottom of the cover plate, a collecting assembly is arranged on the cover plate, and a sealing assembly is arranged at the bottom end of the cover plate. According to the device, high-pressure gas is injected into the groove opening through the gas pipe, chippings and cooling liquid are injected upwards and conveyed outwards through the conveying opening, the circular pipe and the conveying pipe along with gas flow to be collected, and it is guaranteed that the chippings and the cooling liquid are discharged during groove hole machining.

Description

Technical Field

[0001] The invention relates to the technical field of centrifuge rotor processing, and in particular to a precision boring device for a centrifuge rotor cavity and a use method thereof. Background Art

[0002] The boring device is a mechanical device used to expand and accurately process the hole diameter, usually used for workpiece hole processing requiring high precision. It removes material by rotating the tool, and is suitable for processing occasions with strict requirements on the diameter, smoothness and coaxiality of the hole.

[0003] When processing a through hole, most existing boring devices use coolant to cool the cutter head and take away some of the debris generated by the processing. The debris flows to the bottom of the through hole along with the water flow. However, when processing a centrifuge rotor, it is necessary to process the slots on it. The coolant and debris will remain in the slots and cannot be removed, which can easily damage the cutter head and affect the processing quality. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A precision boring device for a centrifuge rotor cavity, comprising:

[0007] The main unit comprises an operating table, a plurality of bottom blocks are symmetrically and fixedly connected to the bottom surface of the operating table, and a stand is fixedly connected to the operating table;

[0008] The fixing unit comprises a first bottom plate, the first bottom plate is slidably connected to the operating table in the front-back direction, the first bottom plate is slidably connected to the second bottom plate in the left-right direction, a first adjustment component is arranged on the operating table, a second adjustment component is arranged on the right side of the first bottom plate, and a plurality of fixing components are arranged on the second bottom plate;

[0009] The processing unit includes a second electric telescopic rod, which is fixed on a vertical frame, a mounting assembly is provided at the bottom of the second electric telescopic rod, a cover plate is slidably connected to the movable end of the second electric telescopic rod, a cooling assembly is provided at the bottom of the cover plate, a collecting assembly is provided on the cover plate, an elastic assembly is provided between the cover plate and the second electric telescopic rod, and a sealing assembly is provided at the bottom of the cover plate.

[0010] As a preferred solution of the precision boring device for the centrifuge rotor cavity described in the present invention, wherein: the first adjustment component includes a plurality of vertical plates, the vertical plates are fixedly connected to the operating table, the operating table is fixedly provided with a first motor, the output end of the first motor is fixedly connected with a bidirectional threaded rod, the bidirectional threaded rod is rotatably connected to the vertical plate, the bidirectional threaded rod is symmetrically threaded with a moving sleeve, the first bottom plate is symmetrically fixedly connected with a moving block, and a rotating rod is rotatably connected between the moving sleeve and the moving block.

[0011] As a preferred solution of the precision boring device for the centrifuge rotor cavity described in the present invention, the second adjustment component includes a double-layer fixed frame, the double-layer fixed frame is fixedly connected to the first base plate, a plurality of triangular plates are fixedly connected to the double-layer fixed frame, a first electric telescopic rod is fixedly connected to the triangular plate, the movable end of the first electric telescopic rod is slidably inserted into the double-layer fixed frame, and the movable end of the first electric telescopic rod is fixedly connected to the second base plate.

[0012] As a preferred solution of the precision boring device for the centrifuge rotor cavity described in the present invention, the fixing assembly includes a plurality of rectangular blocks, the rectangular blocks are fixedly connected to the second bottom plate, a round block is fixedly connected to the rectangular block, a rotating plate is connected to the round block for damping rotation, a pressure rod is threadedly connected to the rotating plate, and a cushion block is fixedly connected to the bottom end of the pressure rod.

[0013] As a preferred solution of the precision boring device for the centrifuge rotor cavity described in the present invention, the mounting assembly includes a second motor, the second motor is fixedly arranged at the bottom end of the second electric telescopic rod, the output end of the second motor is fixedly connected to a rotating shaft, the bottom end of the rotating shaft is provided with a mounting groove, and the side wall of the rotating shaft is provided with a mounting hole.

[0014] As a preferred solution of the precision boring device for the centrifuge rotor cavity described in the present invention, the cooling assembly includes an annular tube, the annular tube is arranged at the bottom of the cover plate, a high-pressure nozzle is fixedly connected to the annular tube, the high-pressure nozzle is fixedly inserted on the cover plate, and a connecting pipe is fixedly connected to the annular tube.

[0015] As a preferred solution of the precision boring device for the centrifuge rotor cavity described in the present invention, the collecting component includes an air pipe, the air pipe is fixedly connected to the cover plate, the air pipe output end is fixedly connected to a spray gun, the spray gun faces the lower middle part, a plurality of material delivery openings are opened on the cover plate, a plurality of round tubes are fixedly connected to the material delivery openings at the top of the cover plate, and a material delivery pipe is fixedly connected to the plurality of round tubes.

[0016] As a preferred solution of the precision boring device for the centrifuge rotor cavity described in the present invention, the elastic component includes a fixed plate, the fixed plate is fixedly connected to the movable end of the second electric telescopic rod, and a first spring is fixedly connected between the fixed plate and the top of the cover plate.

[0017] As a preferred solution of a precision boring device for a centrifuge rotor cavity described in the present invention, the sealing assembly includes a first annular piston plate and a second annular piston plate, the bottom of the cover plate is respectively provided with a first cavity and an annular groove, the first cavity and the annular groove are communicated, the first annular piston plate is slidably connected to the inner side wall of the first cavity, the second annular piston plate is slidably connected to the inner side wall of the annular groove, hydraulic oil is filled between the first annular piston plate and the second annular piston plate, a plurality of round rods are fixedly connected to the bottom surface of the first annular piston plate, the round rods are slidably inserted on the cover plate, a plurality of second springs are fixedly connected between the first annular piston plate and the inner bottom wall of the first cavity, and a sealing ring is fixedly connected to the second annular piston plate.

[0018] The method for using the precision boring device for the centrifuge rotor cavity as described above comprises the following steps:

[0019] S1, move the cover plate upward, then insert the boring tool into the mounting groove, and then install the boring tool by fitting the bolts with the mounting holes;

[0020] S2. When in use, place the rotor to be processed on the second bottom plate, then rotate the rotating plate to a suitable position, and then rotate the pressing rod to drive the pressing rod to move downward to press and fix the rotor;

[0021] S3, start the first motor to drive the bidirectional threaded rod to rotate, so that the movable sleeve moves left and right, drives the rotating rod to rotate, drives the first bottom plate to move forward and backward for adjustment, and then starts the first electric telescopic rod to drive the second bottom plate to adjust in the left and right directions, so that the rotor to be processed is located directly below the boring tool;

[0022] S4, start the second electric telescopic rod to drive the cover plate to move downward, and after contacting the workpiece, drive the round rod to move upward, drive the first annular piston plate to move upward, squeeze the hydraulic oil, so that the second annular piston plate moves downward, squeeze the sealing ring, and seal the bottom of the cover plate;

[0023] S5. Start the second motor to rotate the boring tool to process the workpiece, and input coolant through the connecting pipe to cool the boring tool. At the same time, high-pressure gas is injected into the slot through the air pipe to flush the debris and coolant upward and transport them outward through the feed opening, the round tube and the feed pipe along with the air flow for collection.

[0024] Beneficial effects of the present invention:

[0025] 1. Place the rotor to be processed on the second bottom plate, then rotate the rotating plate to a suitable position, and then rotate the pressure rod to drive the pressure rod to move downward, press and fix the rotor, and then adjust the position of the workpiece through the first motor and the first electric telescopic rod. The operation is simple and convenient, and the work efficiency is improved.

[0026] 2. When processing the workpiece, coolant is input through the connecting pipe to cool the boring tool. At the same time, high-pressure gas is injected into the slot through the air pipe to flush the chips and coolant upward and transport them outward through the feed opening, round pipe and feed pipe with the air flow and collect them, ensuring the discharge of chips and coolant during slot processing, avoiding damage to the tool head and ensuring the processing quality.

[0027] 3. The cover plate moves downward and contacts the workpiece, driving the round rod upward, driving the first annular piston plate upward, squeezing the hydraulic oil, causing the second annular piston plate to move downward, squeezing the sealing ring, and ensuring the sealing of the bottom of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative labor. Among them:

[0029] Figure 1 This is a schematic diagram of the overall structure of the front side of a precision boring device for a centrifuge rotor cavity proposed by the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0031] Figure 3 for Figure 2 Schematic diagram of the local structure;

[0032] Figure 4 for Figure 1 Schematic diagram of the local structure;

[0033] Figure 5 for Figure 4 Schematic diagram of the local structure;

[0034] Figure 6 for Figure 4 A schematic diagram of a partial cross-sectional structure;

[0035] Figure 7 for Figure 6 A schematic diagram of a front structure of;

[0036] Figure 8 for Figure 7 Enlarged structural diagram at A in the middle.

[0037] In the figure: 100, main unit; 101, operating table; 102, bottom block; 103, stand; 200, firmware unit; 201, first bottom plate; 202, second bottom plate; 203, first adjustment component; 203a, stand; 203b, first motor; 203c, two-way threaded rod; 203d, moving sleeve; 203e, moving block; 203f, rotating rod; 204, second adjustment component; 204a, double-layer fixed frame; 204b, triangle plate; 204c, first electric telescopic rod; 205, fixed component; 205a, rectangular block; 205b, round block; 205c, rotating plate; 205d, pressure rod; 205e, cushion block; 300, processing unit; 301, second electric telescopic Rod; 302, mounting assembly; 302a, second motor; 302b, rotating shaft; 302c, mounting hole; 303, cover plate; 304, cooling assembly; 304a, annular tube; 304b, high-pressure nozzle; 304c, connecting pipe; 305, collecting assembly; 305a, air pipe; 305b, spray gun; 305c, feeding opening; 305d, round tube; 305e, feeding pipe; 306, elastic assembly; 306a, fixing plate; 306b, first spring; 307, sealing assembly; 307a, first annular piston plate; 307b, first cavity; 307c, round rod; 307d, second spring; 307e, annular groove; 307f, second annular piston plate; 307g, sealing ring. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0042] Reference Figure 1-8 The present invention provides a precision boring device for a centrifuge rotor cavity, comprising:

[0043] The main unit 100 includes an operating table 101, a plurality of bottom blocks 102 are symmetrically fixedly connected to the bottom surface of the operating table 101, and a stand 103 is fixedly connected to the operating table 101;

[0044] The fixing unit 200 includes a first bottom plate 201, which is slidably connected to the operating table 101 in the front-to-back direction, and is slidably connected to the second bottom plate 202 in the left-to-right direction. A first adjustment component 203 is provided on the operating table 101, a second adjustment component 204 is provided on the right side of the first bottom plate 201, and a plurality of fixing components 205 are provided on the second bottom plate 202;

[0045] The processing unit 300 includes a second electric telescopic rod 301, which is fixed on the stand 103. A mounting assembly 302 is provided at the bottom of the second electric telescopic rod 301. A cover plate 303 is slidably connected to the movable end of the second electric telescopic rod 301. A cooling assembly 304 is provided at the bottom of the cover plate 303. A collecting assembly 305 is provided on the cover plate 303. An elastic assembly 306 is provided between the cover plate 303 and the second electric telescopic rod 301. A sealing assembly 307 is provided at the bottom of the cover plate 303.

[0046] Among them, the first adjustment component 203 includes multiple vertical plates 203a, the vertical plates 203a are fixedly connected to the operating table 101, and the first motor 203b is fixedly arranged on the operating table 101. The output end of the first motor 203b is fixedly connected to a bidirectional threaded rod 203c, the bidirectional threaded rod 203c is rotatably connected to the vertical plates 203a, and the bidirectional threaded rod 203c is symmetrically threaded with a moving sleeve 203d. The first bottom plate 201 is symmetrically fixedly connected with a moving block 203e, and a rotating rod 203f is rotatably connected between the moving sleeve 203d and the moving block 203e. When the first motor 203b is started, it can drive the bidirectional threaded rod 203c to rotate, so that the moving sleeve 203d moves left and right, drives the rotating rod 203f to rotate, and drives the first bottom plate 201 to move back and forth for adjustment.

[0047] Furthermore, the second adjustment component 204 includes a double-layer fixed frame 204a, which is fixedly connected to the first base plate 201, and a plurality of triangular plates 204b are fixedly connected to the double-layer fixed frame 204a, and a first electric telescopic rod 204c is fixedly connected to the triangular plate 204b, and a movable end of the first electric telescopic rod 204c is slidably inserted into the double-layer fixed frame 204a, and a movable end of the first electric telescopic rod 204c is fixedly connected to the second base plate 202. The user can start the first electric telescopic rod 204c to drive the second base plate 202 to adjust in the left and right directions.

[0048] Furthermore, the fixing assembly 205 includes a plurality of rectangular blocks 205a, the rectangular blocks 205a are fixedly connected to the second bottom plate 202, the rectangular blocks 205a are fixedly connected to round blocks 205b, the round blocks 205b are connected to a rotating plate 205c for damping rotation, the rotating plate 205c is threadedly connected to a pressure rod 205d, and the bottom end of the pressure rod 205d is fixedly connected to a cushion block 205e. The user can rotate the pressure rod 205d to drive the pressure rod 205d to move downward, thereby pressing and fixing the rotor to be processed, and the operation is simple and convenient.

[0049] Furthermore, the mounting assembly 302 includes a second motor 302a, which is fixedly arranged at the bottom end of the second electric telescopic rod 301. The output end of the second motor 302a is fixedly connected to a rotating shaft 302b. A mounting groove is provided at the bottom end of the rotating shaft 302b, and a mounting hole 302c is provided on the side wall of the rotating shaft 302b. The user can insert a boring tool into the mounting groove, and then install the boring tool by engaging the bolts with the mounting hole 302c. The operation is simple and convenient.

[0050] Furthermore, the cooling assembly 304 includes an annular tube 304a, which is arranged at the bottom of the cover plate 303. A high-pressure nozzle 304b is fixedly connected to the annular tube 304a. The high-pressure nozzle 304b is fixedly inserted on the cover plate 303. A connecting pipe 304c is fixedly connected to the annular tube 304a. The output end of the high-pressure nozzle 304b is slightly inclined downward and inward to cool the boring tool. When the high-pressure nozzle 304b sprays, it impacts the waste chips and cuts off the waste chips to avoid the formation of entangled chips and large waste chips, thereby protecting the boring tool.

[0051] Furthermore, the collecting component 305 includes an air pipe 305a, which is fixedly connected to the cover plate 303. A spray gun 305b is fixedly connected to the output end of the air pipe 305a, and the spray gun 305b faces the lower middle part. A plurality of feeding openings 305c are opened on the cover plate 303. A plurality of circular tubes 305d are fixedly connected to the feeding opening 305c at the top of the cover plate 303. A feeding pipe 305e is fixedly connected to the plurality of circular tubes 305d. The feeding openings 305c include an arc segment, a fan segment and a circular segment respectively. The upward air flow, water mist and debris flow upward through the feeding opening 305c and are discharged through the feeding pipe 305e. The staff can collect the debris by installing a collection box under the feeding pipe 305e.

[0052] Furthermore, the elastic component 306 includes a fixed plate 306a, which is fixedly connected to the movable end of the second electric telescopic rod 301. A first spring 306b is fixedly connected between the fixed plate 306a and the top of the cover plate 303. The user can move the cover plate 303 upward to expose the rotating shaft 302b, so that the user can install the boring tool conveniently.

[0053] Furthermore, the sealing assembly 307 includes a first annular piston plate 307a and a second annular piston plate 307f. The bottom of the cover plate 303 is respectively provided with a first cavity 307b and an annular groove 307e. The first cavity 307b and the annular groove 307e are connected. The first annular piston plate 307a is slidably connected to the inner wall of the first cavity 307b. The second annular piston plate 307f is slidably connected to the inner wall of the annular groove 307e. Hydraulic oil is filled between the first annular piston plate 307a and the second annular piston plate 307f. The bottom of the first annular piston plate 307a is provided with a first cavity 307b and an annular groove 307e. A plurality of round rods 307c are fixedly connected to the surface, and the round rods 307c are slidably inserted on the cover plate 303. A plurality of second springs 307d are fixedly connected between the first annular piston plate 307a and the inner bottom wall of the first cavity 307b. A sealing ring 307g is fixedly connected to the second annular piston plate 307f, so that when the cover plate 303 is pressed downward, the round rods 307c are driven to move upward, and the first annular piston plate 307a is driven to move upward, squeezing the hydraulic oil, so that the second annular piston plate 307f moves downward, squeezing the sealing ring 307g, and ensuring that the bottom of the cover plate 303 is sealed.

[0054] When in use, the cover plate 303 is moved upward, and then the boring tool is inserted into the mounting groove, and then the boring tool is installed by the cooperation of the bolts and the mounting holes 302c; when in use, the rotor to be processed is placed on the second base plate 202, and then the rotating plate 205c is rotated to a suitable position, and then the pressure rod 205d is rotated to drive the pressure rod 205d to move downward, and the rotor is pressed and fixed; the first motor 203b is started to drive the bidirectional threaded rod 203c to rotate, so that the movable sleeve 203d moves left and right, and the rotating rod 203f is driven to rotate, and the first base plate 201 is driven to move forward and backward for adjustment, and then the first electric telescopic rod 204c is started to drive the second base plate 202 to adjust in the left and right directions, so that the rotor to be processed is in the right position. The second electric telescopic rod 301 is started to drive the cover plate 303 to move downward, and after contacting the workpiece, the round rod 307c is driven to move upward, and the first annular piston plate 307a is driven to move upward, and the hydraulic oil is squeezed, so that the second annular piston plate 307f moves downward, and the sealing ring 307g is squeezed to seal the bottom of the cover plate 303; the second motor 302a is started to rotate the boring tool to process the workpiece, and coolant is input through the connecting pipe 304c to cool the boring tool, and at the same time, high-pressure gas is injected into the notch through the air pipe 305a, and the debris and coolant are flushed upward and transported outward through the feeding opening 305c, the round pipe 305d and the feeding pipe 305e with the air flow for collection.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A precision boring device for a centrifuge rotor cavity, characterized in that: include: The main unit (100) comprises an operating table (101), a plurality of bottom blocks (102) are symmetrically and fixedly connected to the bottom surface of the operating table (101), and a stand (103) is fixedly connected to the operating table (101); The fixing unit (200) comprises a first bottom plate (201), the first bottom plate (201) being slidably connected to the operating table (101) in the front-rear direction, the first bottom plate (201) being slidably connected to the second bottom plate (202) in the left-right direction, the operating table (101) being provided with a first adjustment component (203), the right side of the first bottom plate (201) being provided with a second adjustment component (204), and the second bottom plate (202) being provided with a plurality of fixing components (205); The processing unit (300) comprises a second electric telescopic rod (301), wherein the second electric telescopic rod (301) is fixedly arranged on a stand (103), a mounting assembly (302) is provided at the bottom end of the second electric telescopic rod (301), a cover plate (303) is slidably connected to the movable end of the second electric telescopic rod (301), a cooling assembly (304) is provided at the bottom of the cover plate (303), a collecting assembly (305) is provided on the cover plate (303), an elastic assembly (306) is provided between the cover plate (303) and the second electric telescopic rod (301), and a sealing assembly (307) is provided at the bottom end of the cover plate (303).

2. The precision boring device for a centrifuge rotor cavity according to claim 1, characterized in that: The first adjustment component (203) comprises a plurality of vertical plates (203a), the vertical plates (203a) are fixedly connected to the operating table (101), a first motor (203b) is fixedly arranged on the operating table (101), a bidirectional threaded rod (203c) is fixedly connected to the output end of the first motor (203b), the bidirectional threaded rod (203c) is rotatably connected to the vertical plates (203a), a moving sleeve (203d) is symmetrically threadedly connected to the bidirectional threaded rod (203c), a moving block (203e) is symmetrically fixedly connected to the first bottom plate (201), and a rotating rod (203f) is rotatably connected between the moving sleeve (203d) and the moving block (203e).

3. The precision boring device for a centrifuge rotor cavity according to claim 2, characterized in that: The second adjustment component (204) comprises a double-layer fixing frame (204a), the double-layer fixing frame (204a) is fixedly connected to the first bottom plate (201), a plurality of triangular plates (204b) are fixedly connected to the double-layer fixing frame (204a), a first electric telescopic rod (204c) is fixedly connected to the triangular plates (204b), a movable end of the first electric telescopic rod (204c) is slidably inserted into the double-layer fixing frame (204a), and a movable end of the first electric telescopic rod (204c) is fixedly connected to the second bottom plate (202).

4. The precision boring device for a centrifuge rotor cavity according to claim 3, characterized in that: The fixing assembly (205) comprises a plurality of rectangular blocks (205a), wherein the rectangular blocks (205a) are fixedly connected to the second bottom plate (202), the rectangular blocks (205a) are fixedly connected to round blocks (205b), the round blocks (205b) are connected to a rotating plate (205c) for damping rotation, the rotating plate (205c) is threadedly connected to a pressure rod (205d), and the bottom end of the pressure rod (205d) is fixedly connected to a cushion block (205e).

5. The precision boring device for a centrifuge rotor cavity according to claim 4, characterized in that: The mounting assembly (302) comprises a second motor (302a), the second motor (302a) being fixedly arranged at the bottom end of the second electric telescopic rod (301), the output end of the second motor (302a) being fixedly connected to a rotating shaft (302b), the bottom end of the rotating shaft (302b) being provided with a mounting groove, and a side wall of the rotating shaft (302b) being provided with a mounting hole (302c).

6. The precision boring device for a centrifuge rotor cavity according to claim 5, characterized in that: The cooling assembly (304) comprises an annular tube (304a), the annular tube (304a) is arranged at the bottom of the cover plate (303), a high-pressure nozzle (304b) is fixedly connected to the annular tube (304a), the high-pressure nozzle (304b) is fixedly inserted on the cover plate (303), and a connecting tube (304c) is fixedly connected to the annular tube (304a).

7. The precision boring device for a centrifuge rotor cavity according to claim 6, characterized in that: The collecting assembly (305) comprises an air pipe (305a), the air pipe (305a) is fixedly connected to the cover plate (303), a spray gun (305b) is fixedly connected to the output end of the air pipe (305a), the spray gun (305b) faces the lower middle part, a plurality of material delivery openings (305c) are opened on the cover plate (303), a plurality of circular tubes (305d) are fixedly connected to the material delivery openings (305c) at the top end of the cover plate (303), and a material delivery pipe (305e) is fixedly connected to the plurality of circular tubes (305d).

8. The precision boring device for a centrifuge rotor cavity according to claim 7, characterized in that: The elastic component (306) comprises a fixing plate (306a), the fixing plate (306a) being fixedly connected to the movable end of the second electric telescopic rod (301), and a first spring (306b) being fixedly connected between the fixing plate (306a) and the top end of the cover plate (303).

9. The precision boring device for a centrifuge rotor cavity according to claim 8, characterized in that: The sealing assembly (307) comprises a first annular piston plate (307a) and a second annular piston plate (307f); a first cavity (307b) and an annular groove (307e) are respectively formed at the bottom of the cover plate (303); the first cavity (307b) and the annular groove (307e) are communicated with each other; the first annular piston plate (307a) is slidably connected to the inner side wall of the first cavity (307b); the second annular piston plate (307f) is slidably connected to the inner side wall of the annular groove (307e); Hydraulic oil is filled between the first annular piston plate (307a) and the second annular piston plate (307f); a plurality of round rods (307c) are fixedly connected to the bottom surface of the first annular piston plate (307a); the round rods (307c) are slidably inserted into the cover plate (303); a plurality of second springs (307d) are fixedly connected between the first annular piston plate (307a) and the inner bottom wall of the first cavity (307b); and a sealing ring (307g) is fixedly connected to the second annular piston plate (307f).

10. A method for using a precision boring device for a centrifuge rotor cavity according to any one of claims 1 to 9, characterized in that: The steps include: S1, move the cover plate (303) upward, then insert the boring tool into the installation groove, and then install the boring tool by matching the bolts with the installation holes (302c); S2. When in use, the rotor to be processed is placed on the second bottom plate (202), and then the rotating plate (205c) is rotated to a suitable position, and then the pressing rod (205d) is rotated to drive the pressing rod (205d) to move downward to press and fix the rotor; S3, starting the first motor (203b) to drive the bidirectional threaded rod (203c) to rotate, so that the movable sleeve (203d) moves left and right, drives the rotating rod (203f) to rotate, drives the first bottom plate (201) to move forward and backward for adjustment, and then starts the first electric telescopic rod (204c) to drive the second bottom plate (202) to adjust in the left and right directions, so that the rotor to be processed is located directly below the boring tool; S4, starting the second electric telescopic rod (301), driving the cover plate (303) to move downward, and after contacting the workpiece, driving the round rod (307c) to move upward, driving the first annular piston plate (307a) to move upward, squeezing the hydraulic oil, so that the second annular piston plate (307f) moves downward, squeezing the sealing ring (307g), and sealing the bottom of the cover plate (303); S5, starting the second motor (302a) to rotate the boring tool to process the workpiece, and inputting coolant through the connecting pipe (304c) to cool the boring tool, and at the same time, injecting high-pressure gas into the slot through the air pipe (305a) to push the debris and coolant upward and transport them outward through the material delivery opening (305c), the circular tube (305d) and the material delivery pipe (305e) along with the air flow for collection.

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