Eccentric bushing fine boring equipment

Abstract

The utility model discloses eccentric bushing fine boring equipment which comprises a lathe, a fine boring device is arranged on the lathe, a clamping device is arranged above the lathe, the clamping device comprises a clamping seat, a rotating sleeve, a guide block, a guide sleeve, a guide groove, a clamping sleeve, a spiral groove, a connecting block, a connecting plate and a movable block, the rotating sleeve is sleeved on the outer side of the clamping sleeve, and the rotating sleeve is sleeved on the outer side of the clamping sleeve. The guide block is arranged in the guide groove, the clamping sleeve is sleeved with the guide sleeve, the guide groove is formed in the guide sleeve, the clamping sleeve is installed on the clamping base, the spiral groove is formed in the outer side of the guide sleeve, the connecting block is arranged on the inner side of the connecting plate, the movable block is connected to one side of the guide block, and the fixing mechanism is arranged on the outer side of the clamping sleeve. The fixing mechanism comprises a threaded sleeve, a reset spring, an inserting rod and inserting grooves, the threaded sleeve is arranged on the outer side of the clamping sleeve in a sleeving mode, one end of the inserting rod is connected with the outer wall of the rotating sleeve through the reset spring, and the inserting grooves are formed in the outer side of the clamping sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric sleeve precision boring processing, and more specifically, relates to an eccentric sleeve precision boring device. Background Art

[0002] In the existing field of eccentric sleeve precision boring technology, there are many problems and limitations, which seriously affect the processing accuracy, efficiency and flexibility, and thus have a significant negative impact on product quality and production efficiency.

[0003] First of all, there is a significant flaw in the design of traditional precision boring equipment, that is, its structure is usually optimized for concentric sleeve processing. This fixed structural design makes the equipment seem powerless when facing the eccentric sleeve processing needs. Due to its special geometric structure, the machining center of the eccentric sleeve does not coincide with the geometric center, which requires the processing equipment to be able to flexibly adjust according to different eccentric distances. However, most of the existing precision boring equipment lacks this adjustment capability. Their spindle, tool system and workpiece clamping device are often fixed and cannot be adjusted to the relative position according to process requirements, thereby achieving precise processing of the eccentric sleeve. This structural limitation seriously restricts the application range of the equipment, making it impossible for many eccentric sleeves that require precision processing to be effectively processed, which not only reduces production efficiency, but may also lead to substandard product quality and increase rework and scrap rates.

[0004] Secondly, when processing the eccentric sleeve, clamping and fixing the workpiece is a key link. However, the clamping devices in the existing technology generally have the problem of poor adaptability. Most clamping devices can only clamp eccentric sleeves of fixed specifications and lack the ability to adapt to workpieces of different sizes and different eccentricities. This limitation seriously affects the flexibility of the equipment. In actual production, the specifications of the eccentric sleeve may vary greatly. If the entire clamping device needs to be replaced every time the workpiece specifications are changed, it will not only greatly increase the equipment adjustment time and reduce production efficiency, but also increase the company's equipment investment cost. In addition, this inflexible clamping method also limits the company's ability to accept diversified orders, which may lead to the loss of potential market opportunities.

[0005] Finally, although some improved designs attempt to enhance the flexibility of the clamping device through structural optimization, these designs often ignore the equally important factor of clamping stability. While pursuing flexibility, some designs sacrifice clamping strength and stability, resulting in insufficient clamping. In this case, during high-speed precision machining, the clamped eccentric sleeve is prone to falling off or loosening. Considering the extremely high precision requirements of precision boring, even a slight loosening may lead to a significant decrease in machining accuracy. What is more serious is that the falling of the workpiece will not only cause the workpiece to be scrapped, but may also damage expensive tools and equipment, and may even cause safety accidents. This instability not only increases production costs and safety risks, but also seriously affects the consistency and reliability of machining quality. Utility Model Content

[0006] (1) Technical problems solved

[0007] In view of the problems existing in the prior art, the utility model provides an eccentric sleeve precision boring device to solve the technical problems mentioned in the background technology.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an eccentric sleeve precision boring device, including a lathe, characterized in that: the lathe is provided with a precision boring device, the lathe is provided with a clamping device, the clamping device includes a clamping seat, a rotating sleeve, a guide block, a guide sleeve, a guide groove, a clamping sleeve, a spiral groove, a connecting block, a connecting plate and a movable block, the rotating sleeve is rotatably sleeved on the outside of the clamping sleeve, the guide block is slidably arranged in the guide groove, the guide sleeve is slidably sleeved on the outside of the clamping sleeve, the guide groove is opened in the guide sleeve, and the clamping sleeve is fixedly mounted on the clamping sleeve. On the holding seat, the spiral groove is opened on the outside of the guide sleeve, the connecting block is arranged on the inner side of the connecting plate, the connecting plate is connected to one side of the rotating sleeve, the movable block is connected to one side of the guide block, and a fixing mechanism is provided on the outside of the clamping sleeve, and the fixing mechanism includes a threaded sleeve, a return spring, a plug rod and a slot. The threaded sleeve is arranged on the outside of the clamping sleeve through a threaded movable sleeve, one end of the plug rod is connected to the outer wall of the rotating sleeve through a return spring, and the other end of the plug rod is inserted into the slot. A plurality of the slots are opened on the outside of the clamping sleeve, and the edges of the slots and the ends of the plug rods are both rounded structure designs.

[0010] The utility model is further configured such that one side of the movable block is connected with a push spring, and the other end of the push spring is connected with a clamping plate.

[0011] The present invention is further configured such that an anti-slip strip is connected to the inner side of the splint.

[0012] The utility model is further configured as follows: the precision boring device includes a sliding seat, a precision boring assembly, a transmission shaft, a first lead screw, a motor, a transmission wheel and an installation box; the sliding seat is slidably installed above the lathe; the first lead screw is rotatably installed on the top of the lathe; the sliding seat is movably connected to the first lead screw through a thread; the motor is installed in the lathe; the transmission wheel is respectively installed on the outside of the first lead screw and the transmission shaft, and the two transmission wheels are engaged with each other; and the installation box is installed inside the lathe.

[0013] The utility model is further configured such that a second screw is movably provided in the sliding seat, the clamping seat is slidably connected to the second screw via a thread, and a knob is connected to one end of the second screw.

[0014] The present invention is further configured such that a reducer is detachably provided in the installation box, an input end of the reducer is connected to an output end of the motor, and an output end of the reducer is connected to one end of the transmission shaft.

[0015] The utility model is further configured such that a handwheel is provided on one side of the lathe, and bevel gears are connected to one side of the handwheel and one side of one of the transmission wheels, and the bevel gears are meshed with each other. The above components can realize precise adjustment of the longitudinal position of the clamping seat in a small range.

[0016] The utility model is further configured such that a rotating frame is provided on one side of the handwheel, a rotation-stopping frame is connected to one end of the rotating frame, a turntable is connected to one end of the first screw, and the rotation-stopping frame is arranged on the outside of the turntable. The arrangement of the above components prevents accidental rotation of the first screw.

[0017] (3) Beneficial effects

[0018] Compared with the prior art, the present invention provides an eccentric sleeve fine boring device with the following beneficial effects:

[0019] 1. The precision boring device solves the problem of the inability to flexibly adjust the processing position in the existing technology through innovative design. The cooperation between the sliding seat and the first screw realizes a large range of longitudinal adjustment, while the design of the handwheel and bevel gear allows fine fine-tuning. This dual adjustment mechanism greatly improves the adaptability of the equipment and can accurately position eccentric sleeves of different specifications. The combination of motor-driven automatic adjustment and manual fine-tuning not only improves efficiency but also ensures accuracy. In addition, the design of the second screw and knob realizes precise adjustment of the lateral position, perfectly solving the problem of misalignment between the machining center and the geometric center of the eccentric sleeve. The design of the rotating frame and the anti-rotation frame ensures the stability of the adjusted position and prevents accidental movement. This all-round adjustment capability enables the equipment to adapt to workpieces of various specifications and eccentricities, significantly improving the versatility and production efficiency of the equipment.

[0020] 2. The innovative design of the clamping device successfully solves the problems of poor adaptability and insufficient stability of the clamping device in the existing technology. The ingenious coordination of the rotating sleeve, guide sleeve and guide block, combined with the design of the spiral groove, realizes adaptive clamping of eccentric sleeves of different sizes. The combination of the movable block and the push spring ensures the uniform distribution and adjustability of the clamping force, and the setting of the anti-slip strip further enhances the stability of the clamping. This design can not only adapt to eccentric sleeves of various specifications, but also the rapid adjustment characteristics of the clamping device greatly reduce the time of changing workpieces and improve production efficiency.

[0021] 3. The design of the fixing mechanism cleverly solves the problem of clamping stability. The combination of the threaded sleeve, return spring and insert rod forms a multiple locking system. The cooperation of the insert rod and the slot not only provides preliminary positioning, but the design of the return spring also ensures that the insert rod can automatically return to its position, increasing the reliability of the system. The design of the threaded sleeve provides additional locking protection to prevent the rotating sleeve from accidentally rotating. This multi-level locking mechanism significantly improves the stability and safety of clamping, effectively prevents accidental loosening or unlocking during processing, and ensures processing accuracy and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an eccentric sleeve fine boring device in the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the lathe in the present utility model;

[0024] Figure 3 This is a schematic structural diagram of the top of the sliding seat in the utility model;

[0025] Figure 4 This is a schematic cross-sectional view of the clamping seat portion of the present invention;

[0026] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at A in the middle;

[0027] Figure 6 for Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0028] In the figure: 1. lathe; 2. clamping seat; 3. rotating sleeve; 4. guide block; 5. guide sleeve; 6. guide groove; 7. clamping sleeve; 8. spiral groove; 9. connecting block; 10. connecting plate; 11. movable block; 12. threaded sleeve; 13. return spring; 14. plug rod; 15. slot; 16. push spring; 17. clamping plate; 18. anti-slip strip; 19. sliding seat; 20. first screw; 21. motor; 22. transmission wheel; 23. mounting box; 24. second screw; 25. knob; 26. reducer; 27. handwheel; 28. bevel gear; 29. ​​rotating frame; 30. anti-rotation frame; 31. turntable; 40. precision boring assembly; 41. transmission shaft. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0032] See also Figures 1-6 An eccentric sleeve fine boring device includes a lathe 1, which is characterized in that: a fine boring device is provided on the lathe 1, a clamping device is provided above the lathe 1, the clamping device includes a clamping seat 2, a rotating sleeve 3, a guide block 4, a guide sleeve 5, a guide groove 6, a clamping sleeve 7, a spiral groove 8, a connecting block 9, a connecting plate 10 and a movable block 11, the rotating sleeve 3 is rotatably sleeved on the outside of the clamping sleeve 7, the guide block 4 is slidably set in the guide groove 6, the guide sleeve 5 is slidably sleeved on the outside of the clamping sleeve 7, the guide groove 6 is opened in the guide sleeve 5, the clamping sleeve 7 is fixedly installed on the clamping seat 2, and the spiral groove 8 is opened in the guide sleeve 5 outside, the connecting block 9 is arranged on the inside of the connecting plate 10, the connecting plate 10 is connected to one side of the rotating sleeve 3, the movable block 11 is connected to one side of the guide block 4, and a fixing mechanism is provided on the outside of the clamping sleeve 7. The fixing mechanism includes a threaded sleeve 12, a return spring 13, an insertion rod 14 and a slot 15. The threaded sleeve 12 is arranged on the outside of the clamping sleeve 7 through a threaded movable sleeve. One end of the insertion rod 14 is connected to the outer wall of the rotating sleeve 3 through the return spring 13, and the other end of the insertion rod 14 is inserted into the slot 15. A plurality of slots 15 are opened on the outside of the clamping sleeve 7, and the edges of the slots 15 and the ends of the insertion rod 14 are designed with rounded corners.

[0033] One side of the movable block 11 is connected to a push spring 16 , and the other end of the push spring 16 is connected to a clamping plate 17 .

[0034] An anti-slip strip 18 is connected to the inner side of the clamping plate 17 .

[0035] When the eccentric sleeve needs to be clamped, the threaded sleeve 12 is first rotated so that the threaded sleeve 12 rotates along the thread set on the outside of the clamping sleeve 7, and then the outer side of the plug rod 14 loses the limit of the inner wall of the threaded sleeve 12, and then the eccentric sleeve is placed in the clamping sleeve 7, and then the rotating sleeve 3 is rotated. The rotating sleeve 3 will drive the plug rod 14 to move, and then the side wall of the slot 15 will squeeze the end of the plug rod 14. Due to the rounded structure treatment at the edge of the slot 15 and the end of the plug rod 14, one end of the plug rod 14 will slide out of the slot 15, and then the other end of the plug rod 14 will drive the return spring 13 to stretch, and at the same time, the rotating sleeve 3 will drive the connecting plate 10 connected on one side to rotate, and then the connecting plate 10 will drive the connecting block 9 to rotate, and then the connecting block 9 will slide in the spiral groove 8. Due to the special structural design of the spiral groove 8, the guide sleeve 5 will drive the guide groove 6 to slide along the clamping sleeve 7. Due to the special inclination of the guide groove 6 and the guide block 4 When the inner wall of the splint 17 fits the outer wall of the eccentric sleeve, the movable block 11 continues to gather inward, and then the movable block 11 will cooperate with the splint 17 to squeeze the push spring 16. When the push spring 16 is squeezed to the limit, the splint 17 will clamp the eccentric sleeve thoroughly and tightly. At the same time, the return spring 13 will drive one end of the insertion rod 14 to engage with the corresponding slot 15, and then rotate the threaded sleeve 12 in the opposite direction, so that the threaded sleeve 12 is reset along the thread line, and then the inner wall of the threaded sleeve 12 will limit the outer end of the insertion rod 14 again to prevent the insertion rod 14 from moving, and then the insertion rod 14 will cooperate with the slot 15 to form a stable limit for the rotating sleeve 3 to prevent the rotating sleeve 3 from rotating, thereby ensuring the overall structural stability of the clamping device and preventing it from being accidentally loosened or unlocked.

[0036] See also Figure 1-Figure 4 As an implementation method of the fine boring device: the fine boring device includes a sliding seat 19, a fine boring assembly 40, a transmission shaft 41, a first screw 20, a motor 21, a transmission wheel 22 and an installation box 23. The sliding seat 19 is slidably installed above the lathe 1, the first screw 20 is rotatably installed on the top of the lathe 1, the sliding seat 19 is movably connected to the first screw 20 through a thread, the motor 21 is installed in the lathe 1, the transmission wheel 22 is respectively installed on the outside of the first screw 20 and the transmission shaft 41, and the two transmission wheels 22 are engaged with each other, and the installation box 23 is installed inside the lathe 1.

[0037] A second lead screw 24 is movably provided in the sliding seat 19 , and the clamping seat 2 is slidably connected to the second lead screw 24 via a thread, and a knob 25 is connected to one end of the second lead screw 24 .

[0038] A reducer 26 is detachably provided in the installation box 23 . The input end of the reducer 26 is connected to the output end of the motor 21 , and the output end of the reducer 26 is connected to one end of the transmission shaft 41 .

[0039] A hand wheel 27 is provided on one side of the lathe 1 , and a bevel gear 28 is connected to one side of the hand wheel 27 and one side of one of the transmission wheels 22 , and the bevel gears 28 are meshed with each other.

[0040] A rotating frame 29 is provided on one side of the hand wheel 27 , and a rotation-stopping frame 30 is connected to one end of the rotating frame 29 . A turntable 31 is connected to one end of the first screw 20 , and the rotation-stopping frame 30 is arranged outside the turntable 31 .

[0041] More specifically, when the device needs to be used, the eccentric sleeve is first clamped on the inner side of the clamping sleeve 7, and then the motor 21 is turned on to make the motor 21 run. Then, the output end of the motor 21 drives the transmission shaft 41 connected to the output end of the reducer 26 to rotate after the deceleration action of the reduction gear box, and then the transmission shaft 41 will drive the transmission wheel 22 installed on the outside to rotate, and then the transmission wheel 22 here will drive the transmission wheel 22 meshed with it to rotate, and then the corresponding transmission wheel 22 will drive the first screw 20 to rotate. Since the sliding seat 19 is movably connected to the first screw 20 through a thread, the sliding seat 19 will slide along the first screw 20, thereby realizing a large range of longitudinal position adjustment of the clamping seat 2. When it is adjusted to a similar position, the motor 21 is turned off and the handwheel 27 is turned. The handwheel 27 will drive the bevel gear 28 connected at one end to rotate, and then the bevel gear 28 here will drive the bevel gear 28 set on the outside of the transmission shaft 41 to rotate, and then the transmission shaft 41 will drive the transmission wheel 22 set on the outside to rotate, and then the transmission wheel 22 here will pass The cooperation with the other transmission wheel 22 drives the first screw 20 to rotate again, and then the sliding seat 19 drives the clamping seat 2 to slide along the first screw 20 again, thereby realizing a small range of longitudinal position adjustment of the clamping seat 2. After the adjustment is appropriate, the rotating frame 29 is rotated, and then the rotating frame 29 will drive the anti-rotation frame 30 to move, so that the side wall of the anti-rotation frame 30 is stuck in the turntable 31 connected to one end of the first screw 20, thereby preventing the first screw 20 from rotating by itself, and then the eccentricity is measured and the rotating frame is rotated according to the eccentricity. The knob 25 is turned, so that the knob 25 drives the second lead screw 24 to rotate. Since the clamping seat 2 is movably connected to the second lead screw 24 through a thread, the clamping seat 2 will drive the clamping sleeve 7 and the eccentric sleeve to slide along the second lead screw 24. When the corresponding position is adjusted, the knob 25 is stopped, and then the fine boring assembly 40 is opened, so that the fine boring assembly 40 performs fine boring on the eccentric sleeve through the fine boring tool set at the output end, and at the same time, the fine boring tool is cooled by an external cooling device to ensure the performance of the fine boring tool.

[0042] In summary, when the overall device is in use or running: when the eccentric sleeve needs to be clamped, the threaded sleeve 12 is first rotated so that the threaded sleeve 12 rotates along the thread set on the outside of the clamping sleeve 7, and then the outer side of the plug rod 14 loses the limit of the inner wall of the threaded sleeve 12, and then the eccentric sleeve is placed in the clamping sleeve 7, and then the rotating sleeve 3 is rotated. The rotating sleeve 3 will drive the plug rod 14 to move, and then the side wall of the slot 15 will squeeze the end of the plug rod 14. Due to the rounded structure treatment at the edge of the slot 15 and the end of the plug rod 14, one end of the plug rod 14 will slide out of the slot 15, and then the other end of the plug rod 14 will drive the return spring 13 to stretch, and at the same time, the rotating sleeve 3 will drive the connecting plate 10 connected on one side to rotate, and then the connecting plate 10 will drive the connecting block 9 to rotate, and then the connecting block 9 will slide in the spiral groove 8. Due to the special structural design of the spiral groove 8, the guide sleeve 5 will drive the guide groove 6 to slide along the clamping sleeve 7. When the cam 17 is in engagement with the outer wall of the cam 17, the cam 17 is engaged with the outer wall of the cam 17, and the cam 17 is engaged with the outer wall of the cam 17. When the cam 17 is engaged with the outer wall of the cam 17, the cam 17 is engaged with the outer wall of the cam 17, and the cam 17 is engaged with the outer wall of the cam 17. When the cam 17 is engaged with the outer wall of the cam 17, the cam 17 is engaged with the outer wall of the cam 17, and the cam 17 is engaged with the outer wall of the cam 17.

[0043] When the device needs to be used, first clamp the eccentric sleeve inside the clamping sleeve 7, then turn on the motor 21 to make the motor 21 run, and then the output end of the motor 21 drives the transmission shaft 41 connected to the output end of the reducer 26 to rotate after the deceleration effect of the reduction gear box, and then the transmission shaft 41 will drive the transmission wheel 22 installed on the outside to rotate, and then the transmission wheel 22 here will drive the transmission wheel 22 meshed with it to rotate, and then the corresponding transmission wheel 22 will drive the first screw 20 to rotate. Since the sliding seat 19 is movably connected to the first screw 20 through a thread, the sliding seat 19 will slide along the first screw 20, thereby realizing a large range of longitudinal position adjustment of the clamping seat 2. When it is adjusted to a similar position, turn off the motor 21 and turn the handwheel 27. The handwheel 27 will drive the bevel gear 28 connected at one end to rotate, and then the bevel gear 28 here will drive the bevel gear 28 set on the outside of the transmission shaft 41 to rotate, and then the transmission shaft 41 will drive the transmission wheel 22 set on the outside to rotate, and then the transmission wheel 22 here will pass through and connect with another The cooperation of the transmission wheel 22 drives the first screw 20 to rotate again, and then the sliding seat 19 drives the clamping seat 2 to slide along the first screw 20 again, thereby realizing a small range of longitudinal position adjustment of the clamping seat 2. After the adjustment is appropriate, the rotating frame 29 is rotated, and then the rotating frame 29 drives the anti-rotation frame 30 to move, so that the side wall of the anti-rotation frame 30 is stuck on the turntable 31 connected to one end of the first screw 20, thereby preventing the first screw 20 from rotating by itself, and then the eccentricity is measured, and the knob 2 is turned according to the eccentricity. 5, so that the knob 25 drives the second lead screw 24 to rotate. Since the clamping seat 2 is movably connected to the second lead screw 24 through the thread, the clamping seat 2 will drive the clamping sleeve 7 and the eccentric sleeve to slide along the second lead screw 24. When the corresponding position is adjusted, the knob 25 is stopped, and then the fine boring assembly 40 is opened, so that the fine boring assembly 40 performs fine boring on the eccentric sleeve through the fine boring tool set at the output end, and at the same time, the fine boring tool is cooled by an external cooling device to ensure the performance of the fine boring tool.

[0044] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An eccentric sleeve fine boring device, comprising a lathe (1), characterized in that: A precision boring device is provided on a lathe (1). A clamping device is provided above the lathe (1). The clamping device comprises a clamping seat (2), a rotating sleeve (3), a guide block (4), a guide sleeve (5), a guide groove (6), a clamping sleeve (7), a spiral groove (8), a connecting block (9), a connecting plate (10) and a movable block (11). The rotating sleeve (3) is sleeved on the outside of the clamping sleeve (7), the guide block (4) is arranged in the guide groove (6), the guide sleeve (5) is sleeved on the outside of the clamping sleeve (7), the guide groove (6) is opened in the guide sleeve (5), and the clamping sleeve (7) is installed on the clamping seat (2). The spiral groove (8) is provided on the outside of the guide sleeve (5), the connecting block (9) is provided on the inside of the connecting plate (10), the connecting plate (10) is connected to one side of the rotating sleeve (3), the movable block (11) is connected to one side of the guide block (4), and a fixing mechanism is provided on the outside of the clamping sleeve (7), the fixing mechanism comprising a threaded sleeve (12), a return spring (13), an inserting rod (14) and a slot (15), the threaded sleeve (12) is sleeved on the outside of the clamping sleeve (7), one end of the inserting rod (14) is connected to the outer wall of the rotating sleeve (3) through the return spring (13), and a plurality of slots (15) are provided on the outside of the clamping sleeve (7).

2. The eccentric sleeve fine boring equipment according to claim 1, characterized in that: One side of the movable block (11) is connected with a push spring (16), and the other end of the push spring (16) is connected with a clamping plate (17).

3. The eccentric sleeve fine boring equipment according to claim 2, characterized in that: The inner side of the clamping plate (17) is connected with an anti-slip strip (18).

4. An eccentric sleeve fine boring device according to any one of claims 1 to 3, characterized in that: The precision boring device comprises a sliding seat (19), a precision boring assembly (40), a transmission shaft (41), a first lead screw (20), a motor (21), a transmission wheel (22) and an installation box (23), wherein the sliding seat (19) is slidably installed above the lathe (1), the first lead screw (20) is rotatably installed on the top of the lathe (1), the sliding seat (19) is movably connected to the first lead screw (20) through a thread, the motor (21) is installed in the lathe (1), the transmission wheel (22) is respectively installed on the outside of the first lead screw (20) and the transmission shaft (41), and the two transmission wheels (22) are meshed with each other, and the installation box (23) is installed inside the lathe (1).

5. The eccentric sleeve fine boring equipment according to claim 4, characterized in that: A second screw (24) is movably provided in the sliding seat (19), and the clamping seat (2) is slidably connected to the second screw (24) through a thread, and a knob (25) is connected to one end of the second screw (24).

6. The eccentric sleeve fine boring equipment according to claim 5, characterized in that: A reducer (26) is detachably provided in the installation box (23), the input end of the reducer (26) is connected to the output end of the motor (21), and the output end of the reducer (26) is connected to one end of the transmission shaft (41).

7. The eccentric sleeve fine boring equipment according to claim 6, characterized in that: A hand wheel (27) is provided on one side of the lathe (1), and a bevel gear (28) is connected to one side of the hand wheel (27) and one side of one of the transmission wheels (22), and the bevel gears (28) are meshed with each other.

8. The eccentric sleeve fine boring equipment according to claim 7, characterized in that: A rotating frame (29) is provided on one side of the hand wheel (27), one end of the rotating frame (29) is connected to a rotation stop frame (30), one end of the first screw (20) is connected to a turntable (31), and the rotation stop frame (30) is arranged outside the turntable (31).

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