Multi-surface superfinishing grinding device and system

Abstract

The invention relates to a multi-surface superfinishing grinding device and system. The device comprises a rotation driving device used for providing rotation driving force; the eccentric main shaft is driven by the rotary driving device to do eccentric rotary motion; the oscillation sliding plate is provided with a driving hole, and the eccentric main shaft can make contact with the inner wall of the driving hole when doing the eccentric rotating motion so as to drive the oscillation sliding plate to do oscillation motion; the bearing plate is used for bearing the oscillating motion of the oscillating sliding plate; the telescopic piece is connected with the oscillating sliding plate; the grinding assembly is connected with the driving end of the telescopic piece and used for executing a grinding function; and the angle adjusting device is used for adjusting the angle of the oscillating sliding plate. The device can adapt to superfinishing grinding of various surfaces.

Description

Technical Field

[0001] This invention relates to the field of grinding technology, and in particular to a multi-surface ultra-precision grinding device and system. Background Technology

[0002] Currently, the machining technology for the raceways and flange surfaces of large wind turbine bearing rings is gradually developing towards higher precision, with ultra-precision machining becoming a trend. This machining method can significantly extend the service life of the bearing.

[0003] However, the existing large-scale ultra-precision grinding machines on the market have limited functions and can only meet the processing needs of a specific type of surface, making it difficult to adapt to the processing requirements of various surfaces such as straight raceways, inclined raceways, circular arc raceways, edge guards, and flat raceways.

[0004] Therefore, there is currently a lack of multifunctional ultra-precision grinding equipment that can accommodate various surface shapes, which limits the applicability of processing equipment to diverse needs. Summary of the Invention

[0005] Therefore, the present invention provides a multi-surface ultra-precision grinding device that can adapt to ultra-precision grinding of various surfaces.

[0006] To solve the above-mentioned technical problems, the present invention provides a multi-surface ultra-precision grinding device, comprising: A rotary drive device for providing rotary driving force; An eccentric spindle is driven to perform eccentric rotational motion by the rotary drive device. An oscillating slide plate is provided with a drive hole, and the eccentric spindle can contact the inner wall of the drive hole when it performs eccentric rotational motion, so as to drive the oscillating slide plate to perform oscillating motion; A support plate is used to support the oscillating motion of the oscillating slide plate; The telescopic component is connected to the vibrating slide plate; A grinding assembly, connected to the drive end of the telescopic component, is used to perform the grinding function; An angle adjustment device is used to adjust the angle of the oscillating slide plate.

[0007] In one embodiment of the present invention, the eccentric spindle includes an eccentric shaft and a main shaft. The eccentric spindle includes a main section and an eccentric section that are connected but have different axes. The main section is rotatably connected to the main shaft. The main shaft is fitted with a bushing, and the eccentric section is fitted with an eccentric sleeve.

[0008] In one embodiment of the present invention, a first bearing is provided between the main shaft and the bushing; a second bearing located inside the drive hole is provided on the eccentric bushing.

[0009] In one embodiment of the present invention, a pressure plate, a nut, and a limiting pin are also included. The pressure plate abuts against the end of the eccentric section and abuts against the stepped hole of the eccentric sleeve. The nut is screwed onto the end of the main section and abuts against the bushing. The eccentric sleeve can be clamped or released by the main shaft and the pressure plate. The limiting pin is disposed between the bushing and the eccentric sleeve to restrict the circumferential rotation of the eccentric sleeve. The distance between the central axis of the main shaft and the central axis of the eccentric sleeve can be adjusted by rotating the eccentric shaft.

[0010] In one embodiment of the present invention, the angle adjustment device includes a mounting base, a servo drive mechanism disposed on the mounting base, and a turntable rotatably connected to the mounting base and driven to rotate by the servo drive mechanism. The bushing extends into the center hole of the turntable and is connected to the turntable, and the support plate is connected to the turntable.

[0011] In one embodiment of the present invention, the rotary drive device includes a servo motor, a first synchronous pulley connected to the output end of the servo motor, a second synchronous pulley sleeved on the main shaft, and a first synchronous belt installed between the first synchronous pulley and the second synchronous pulley.

[0012] In one embodiment of the present invention, the device further includes a base, a first synchronous pulley, and a second synchronous pulley. An encoder is mounted on the first synchronous pulley, which is used to acquire the angle of the turntable. A second synchronous belt is installed between the first synchronous pulley and the second synchronous pulley, and the second synchronous pulley is sleeved on the bushing.

[0013] In one embodiment of the present invention, a connecting sleeve is connected to the inner wall of the driving hole, and a first guide rail is provided between the outer end of the oscillating slide plate and the inner hole of the bearing plate. The first guide rail includes a cross-shaped guide rail, and the telescopic member extends in the same direction as the extension direction of the first guide rail.

[0014] In one embodiment of the present invention, the telescopic component includes a pneumatic slide table, the pneumatic slide table including a base, a second guide rail, a slide table slidably connected to the base via the second guide rail, a cylinder liner, and a piston, the cylinder liner being installed inside the base, the piston being movably connected inside the cylinder liner and connected to the slide table, the second guide rail including a cross guide rail; the grinding assembly includes an oilstone frame installed on the slide table, an oilstone clamp installed on the oilstone frame, and an oilstone clamped on the oilstone clamp.

[0015] The present invention also provides a multi-surface ultra-precision grinding system, including the aforementioned multi-surface ultra-precision grinding device, and further comprising: The workpiece turntable is used to drive the workpiece to be ground to rotate around the Z-axis. The displacement mechanism is located on one side of the workpiece turntable and includes an X-axis drive device and a Z-axis drive device driven by the X-axis drive device. The Z-axis drive device is connected to the multi-surface ultra-precision grinding device.

[0016] The technical solution of the present invention has the following advantages compared with the prior art: The multi-surface ultra-precision grinding device and system described in this invention uses an oscillating slide plate driven by an eccentric spindle to achieve low-amplitude, high-frequency oscillation motion. Through three-axis linkage (C-axis, X-axis, and Z-axis) controlled by CNC servo, the grinding components can always be perpendicular to the workpiece contact point cut surface for processing, ensuring processing accuracy.

[0017] This invention drives an eccentric spindle to rotate via a rotary drive device. The eccentric spindle achieves low-amplitude, high-frequency oscillation motion through contact with an oscillating slide plate. The movement of the oscillating slide plate causes the oilstone to perform high-precision grinding on the workpiece surface. A telescopic component (pneumatic slide) allows adjustment of the pressure of the grinding assembly on the workpiece surface and achieves wear compensation, further improving processing stability and quality. Simultaneously, the coordinated operation of the angle adjustment device and the displacement mechanism ensures that the grinding assembly always maintains the optimal grinding angle and position, adapting to the grinding needs of various complex surfaces. The encoder feedback signal and the precise adjustment of the servo control system further enhance the system's automation level and grinding accuracy. It can meet the ultra-precision grinding needs of various surfaces such as straight raceways, inclined raceways, circular arc raceways, flanges, and flat raceways. Attached Figure Description

[0018] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the multi-surface ultra-precision grinding system of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the multi-surface ultra-precision grinding device of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the eccentric spindle and the rotary drive device of the present invention.

[0022] Figure 4 This is a schematic diagram of the angle adjustment device of the present invention.

[0023] Figure 5 This is a side view schematic diagram of the multi-surface ultra-precision grinding device of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the support plate and the oscillating slide plate of the present invention.

[0025] Figure 7This is a schematic diagram showing the positions of the central axis of the main shaft and the central axis of the eccentric sleeve in this invention.

[0026] Figure 8 This is a schematic diagram of the structure of the pneumatic slide table of the present invention.

[0027] Figure 9 yes Figure 8 A schematic diagram of the cross-sectional structure along the AA direction.

[0028] Figure 10 This is a schematic diagram of the structure of the grinding assembly of the present invention.

[0029] Figure 11 yes Figure 10 A schematic diagram of the cross-sectional structure along the AA direction.

[0030] Figure 12 This is a partial cross-sectional view of the grinding assembly of the present invention from the side.

[0031] Explanation of reference numerals in the instruction manual: 100. Workpiece turntable; 200. Workpiece to be ground; 210. Raceway surface; 300. X-axis drive unit; 400. Z-axis drive unit; 500. Multi-surface ultra-precision grinding unit; 10. Rotary drive device; 11. Servo motor; 12. First synchronous pulley; 13. Second synchronous pulley; 14. First synchronous belt; 20. Eccentric spindle; 21. Eccentric shaft; 211. Main section; 212. Eccentric section; 22. Spindle; 23. Bushing; 24. Eccentric sleeve; 25. First bearing; 26. Second bearing; 271. Pressure plate; 272. Nut; 273. Limit pin; 30. Vibrating slide plate; 31. Drive hole; 32. Connecting sleeve; 40. Bearing plate; 41. First guide rail; 50. Telescopic component; 51. Pneumatic slide; 52. Base; 53. Second guide rail; 54. Slide; 55. Cylinder liner; 56. Piston; 60. Grinding assembly; 61. Oilstone holder; 62. Oilstone clamp; 63. Oilstone; 64. Screw; 65. Clamping post; 66. Locking screw; 70. Angle adjustment device; 71. Mounting base; 72. Servo drive mechanism; 73. Turntable; 81. Base; 82. First synchronous pulley 2; 83. Second synchronous pulley 2; 84. Encoder; 85. Second synchronous belt. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0033] In this invention, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this invention, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0034] In this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number. In the description of this invention, the terms "first" and "second" are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention based on the specific content of the technical solution.

[0036] Reference Figure 1 As shown, a multi-surface ultra-precision grinding system includes: 500 multi-surface ultra-precision grinding device; The workpiece turntable 100 is used to drive the workpiece 200 to be ground to rotate around the Z-axis. The displacement mechanism is located on one side of the workpiece turntable 100 and includes an X-axis drive device 300 and a Z-axis drive device 400 driven by the X-axis drive device 300. The Z-axis drive device 400 is connected to the multi-surface ultra-precision grinding device 500.

[0037] During operation, the workpiece 200 to be ground rotates together with the workpiece turntable 100. The multi-surface ultra-precision grinding device 500 includes an oilstone 63, which presses against the surface of the raceway. The CNC servo system controls the C-axis, the transverse slide of the X-axis drive device 300, and the longitudinal slide of the Z-axis drive device 400 in the ultra-precision grinding device 500 to perform three-axis linkage, ensuring that the oilstone 63 is always perpendicular to the contact point tangent when processing the raceway surface up and down. The oilstone 63 also has a low-amplitude high-frequency oscillation function during operation. The low-amplitude high-frequency oscillation superimposed on the grinding motion of the oilstone 63 can effectively remove small materials, improve surface finish and processing accuracy, and can meet the ultra-precision grinding of various surfaces such as straight raceways, inclined raceways, arc raceways, edge blocks and flat raceways.

[0038] For example, the X-axis drive device 300 and the Z-axis drive device 400 may employ mechanisms such as servo lead screws and servo linear slides.

[0039] Specifically, refer to Figure 2 As shown, the multi-surface ultra-precision grinding device 500 includes: Rotary drive unit 10 is used to provide rotary driving force; An eccentric spindle 20 is driven to perform eccentric rotational motion by the rotary drive device 10. The oscillating slide plate 30 is provided with a drive hole 31. When the eccentric spindle 20 performs eccentric rotational motion, it can contact the inner wall of the drive hole 31 to drive the oscillating slide plate 30 to perform oscillating motion. The support plate 40 is used to support the oscillating motion of the oscillating slide plate 30; The telescopic component 50 is connected to the vibrating slide plate 30; The grinding assembly 60 is connected to the drive end of the telescopic member 50 and is used to perform the grinding function; Angle adjustment device 70 is used to adjust the angle of the oscillating slide plate 30, and further adjust the grinding angle of the grinding assembly 60.

[0040] With the above settings, the angle adjustment device 70 ensures that the grinding assembly 60 is always perpendicular to the processing surface, the eccentric spindle 20 can drive the oscillating slide plate 30 to perform low-amplitude high-frequency oscillation motion, and the telescopic component 50 plays the role of adjusting the surface pressure between the grinding assembly 60 and the workpiece 200 to be ground and compensating for wear.

[0041] In one embodiment, refer to Figure 3 As shown, the eccentric spindle 20 includes an eccentric shaft 21 and a spindle 22. The eccentric spindle 20 includes a main section 211 and an eccentric section 212 that are connected but have different axes. The main section 211 is rotatably connected to the spindle 22. The spindle 22 is fitted with a bushing 23, and the eccentric section 212 is fitted with an eccentric sleeve 24.

[0042] In one embodiment, for ease of rotation, a first bearing 25 is provided between the main shaft 22 and the bushing 23; four first bearings 25 are provided at both ends of the main shaft 22; and a second bearing 26 located in the drive hole 31 is provided on the outer sleeve of the eccentric sleeve 24.

[0043] It is understandable that when the central axis of the second bearing 26 rotates around the central axis of the main shaft 22, the oscillating slide plate 30 can move back and forth along the bearing plate 40 to achieve the oscillation function.

[0044] In one embodiment, refer to Figure 3 As shown, it also includes a pressure plate 271, a nut 272, and a limiting pin 273. The pressure plate 271 abuts against the end of the eccentric section 212 and abuts against the stepped hole of the eccentric sleeve 24. The nut 272 is screwed onto the end of the main section 211 and abuts against the bushing 23. The eccentric sleeve 24 can be clamped or released by the main shaft 22 and the pressure plate 271. The limiting pin 273 is disposed between the bushing 23 and the eccentric sleeve 24 to restrict the circumferential rotation of the eccentric sleeve 24. (Refer to...) Figure 7 As shown, by rotating the eccentric shaft 21, the distance between the central axis (centerline 1) of the main shaft 22 and the central axis (centerline 2) of the eccentric sleeve 24 (second bearing 26) can be adjusted.

[0045] It is understandable that after the nut 272 is tightened, the pressure plate 271 and the main shaft 22 can generate sufficient clamping force to clamp the eccentric sleeve 24. When the nut 272 is loosened, the eccentric shaft 21 can rotate in the hole of the main shaft 22, while the eccentric sleeve 24 can be restricted from circumferential rotation by the limit pin 273 being stuck in the groove of the eccentric sleeve 24.

[0046] When it is necessary to adjust the distance between the centerline of the spindle 22 and the centerline of the eccentric sleeve 24, loosen the nut 272 and rotate the eccentric shaft 21 separately to make the adjustment. The eccentric spindle 20 is designed with a combination of eccentric sleeve 24 and bushing 23. The eccentric parameters can be quickly adjusted through the cooperation of the limit pin 273 and the nut 272.

[0047] In one embodiment, refer to Figure 4 As shown, the angle adjustment device 70 includes a mounting base 71, a servo drive mechanism 72 disposed on the mounting base 71, and a turntable 73 rotatably connected to the mounting base 71 and driven by the servo drive mechanism 72 to rotate (along the C-axis). The bushing 23 extends into the center hole of the turntable 73 and is connected to the turntable 73. The support plate 40 is connected to the turntable 73.

[0048] By setting the angle adjustment device 70, the angle of the grinding component 60 is precisely controlled by the servo drive mechanism 72 to ensure that the optimal grinding posture is maintained.

[0049] In one embodiment, refer to Figure 3 As shown, the rotary drive device 10 includes a servo motor 11, a first synchronous pulley 12 connected to the output end of the servo motor 11, a second synchronous pulley 13 sleeved on the main shaft 22, and a first synchronous belt 14 installed between the first synchronous pulley 12 and the second synchronous pulley 13. Specifically, the diameter of the second synchronous pulley 13 is larger than the diameter of the first synchronous pulley 12.

[0050] To precisely control the angular position of the turntable 73, the system also includes a base 81, a first synchronous pulley 82, and a second synchronous pulley 83. An encoder 84 is mounted on the first synchronous pulley 82 to acquire the angle of the turntable 73. A second synchronous belt 85 is installed between the first synchronous pulley 82 and the second synchronous pulley 83. The second synchronous pulley 83 is fitted onto the bushing 23. Specifically, the diameter of the second synchronous pulley 83 is larger than the diameter of the first synchronous pulley 82.

[0051] During operation, the turntable 73 rotates under the drive of the servo mechanism inside the base 81, which in turn drives the eccentric spindle 20, the oscillating slide plate 30, and the second synchronous pulley 83 to rotate. Through the transmission of the second synchronous belt 85, the second synchronous pulley 83 drives the first synchronous pulley 82 to rotate, and the first synchronous pulley 82 then drives the encoder 84 to rotate. The encoder 84 accurately outputs the real-time position of the turntable 73, thereby accurately controlling the angular position of the turntable 73.

[0052] In one embodiment, refer to Figure 6 As shown, a connecting sleeve 32 is connected to the inner wall of the drive hole 31. A first guide rail 41 is provided between the outer end of the oscillating slide plate 30 and the inner hole of the bearing plate 40. The first guide rail 41 includes a cross-shaped guide rail. The telescopic member 50 extends in the same direction as the first guide rail 41. With the above arrangement, when the central axis of the second bearing 26 rotates around the central axis of the main shaft 22, the oscillating slide plate 30 and the connecting sleeve 32 can slide back and forth along the direction of the first guide rail 41 to achieve the oscillation function.

[0053] In one embodiment, refer to Figure 8 , Figure 9 As shown, the telescopic component 50 includes a pneumatic slide 51, which includes a base 52, a second guide rail 53, a slide 54 slidably connected to the base 52 via the second guide rail 53, a cylinder liner 55, and a piston 56. The cylinder liner 55 is installed inside the base 52, and the piston 56 is movably connected inside the cylinder liner 55 and connected to the slide 54. The second guide rail 53 includes a cross-shaped guide rail.

[0054] Reference Figures 10 to 12 As shown, the grinding assembly 60 includes an oilstone frame 61 mounted on the slide table 54, an oilstone clamp 62 mounted on the oilstone frame 61, and an oilstone 63 clamped to the oilstone clamp 62.

[0055] With the above setup, when installing the oilstone 63, screws 64 are screwed into the clamping column 65. Tightening the screws 64 locks the clamping column 65 into the oilstone clamp 62, and the oilstone 63 is installed inside the oilstone clamp 62. The locking screws 66 then secure the oilstone 63. The oilstone clamp 62 can hold oilstones 63 of different sizes, enhancing the flexibility and versatility of the equipment.

[0056] When the pneumatic slide table 51 is working, compressed air pushes the piston 56 to move along the cylinder liner 55. The slide table 54 slides along the direction of the second guide rail 53 to control the pressure of the oilstone 63 and compensate for the wear caused by the grinding process, so as to maintain a stable grinding state. The oilstone 63 is always perpendicular to the contact point tangent when it is processing the raceway surface up and down through the angle adjustment device 70, and a low-amplitude high-frequency oscillation function is superimposed.

[0057] The cross-shaped guide rail design ensures that the oscillating slide plate 30 performs precise reciprocating motion in a specific direction, improving the controllability and stability of the oscillation motion. This reduces offset and errors during oscillation, ensuring accurate movement of the grinding tool and improving grinding quality. The extension direction of the telescopic component 50 is consistent with the extension direction of the first guide rail 41, ensuring coordination and consistency of mechanical motion and reducing mechanical wear and failure rate. The connection between the connecting sleeve 32 and the guide rail enables efficient reciprocating motion of the oscillating slide plate 30, improving grinding efficiency and processing speed.

[0058] In operation, the workpiece 200 to be ground is fixed on the workpiece turntable 100, and the initial position of the workpiece 200 to be ground and the rotation parameters of the workpiece turntable 100 are set. Start the rotary drive device 10, and the servo motor 11 starts to run, driving the second synchronous pulley 13 through the first synchronous belt 14, so that the eccentric spindle 20 starts to rotate. The rotation of the eccentric spindle 20 generates eccentric force, which contacts the inner wall of the drive hole 31 of the oscillating slide plate 30, driving the oscillating slide plate 30 to perform low-amplitude, high-frequency oscillating motion along the first guide rail 41. Under the control of the pneumatic slide table 51, the position of the oilstone 63 is adjusted so that the oilstone 63 applies appropriate pressure to the surface of the workpiece 200 to be ground; the pneumatic slide table 51 controls the movement of the piston 56 by adjusting the compressed air in the cylinder liner 55, thereby adjusting the position of the slide table 54 and the pressure of the oilstone 63 on the workpiece. The oilstone 63, along with the oscillating motion of the oscillating slide plate 30 and the rotation of the workpiece turntable 100, achieves precise grinding of various surfaces. The servo drive mechanism 72 controls the rotation of the turntable 73 and adjusts the angle of the oscillating slide plate 30. The oilstone 63 always remains perpendicular to the tangential surface of the contact point with the workpiece during the processing, ensuring grinding accuracy and adapting to the grinding requirements of different surfaces. The workpiece turntable 100, together with the X-axis and Z-axis drive devices 400 of the displacement mechanism, enables the grinding device to be precisely positioned and moved in three-dimensional space, meeting the grinding requirements of different surface shapes.

[0059] The encoder 84 is used to acquire the angular position information of the turntable 73 in real time. The servo control system precisely controls the rotation angle of the turntable 73 based on the feedback signal from the encoder 84, ensuring that the position and angle of the grinding component 60 always meet the set requirements.

[0060] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-surface superfinishing grinding device, characterized in that: include: A rotation driving device (10) for providing a rotation driving force; An eccentric main shaft (20), wherein the eccentric main shaft (20) is driven by the rotary drive device (10) to perform eccentric rotary motion; The oscillating slide plate (30) is provided with a driving hole (31), and the eccentric main shaft (20) can contact the inner wall of the driving hole (31) when performing eccentric rotational motion, so as to drive the oscillating slide plate (30) to perform oscillating motion; A bearing plate (40) for bearing the oscillating motion of the oscillating slide plate (30); A telescopic member (50) connected to the oscillating slide plate (30); A grinding assembly (60), connected to the driving end of the telescopic member (50), and used to perform a grinding function; An angle adjustment device (70) is used to adjust the angle of the oscillating slide plate (30).

2. A multi-surface superfinishing device according to claim 1, characterized in that: The eccentric main shaft (20) comprises an eccentric shaft (21) and a main shaft (22), the eccentric main shaft (20) comprising a main section (211) and an eccentric section (212) which are connected and coaxial, the main section (211) being externally rotatably connected to the main shaft (22), the main shaft (22) being provided with a shaft sleeve (23) on its outer sleeve, and the eccentric section (212) being provided with an eccentric sleeve (24) on its outer sleeve.

3. A multi-surface superfinishing device according to claim 2, characterized in that: A first bearing (25) is provided between the main shaft (22) and the shaft sleeve (23); and a second bearing (26) located in the driving hole (31) is provided on the outer cover of the eccentric sleeve (24).

4. A multi-surface superfinishing device according to claim 2, characterized in that: The invention also comprises a pressing plate (271), a nut (272) and a limiting pin (273); the pressing plate (271) is pressed against the end of the eccentric section (212) and abuts against the stepped hole of the eccentric sleeve (24); the nut (272) is screwed to the end of the main section (211) and abuts against the shaft sleeve (23); the eccentric sleeve (24) can be clamped or loosened by the main shaft (22) and the pressing plate (271); the limiting pin (273) is arranged between the shaft sleeve (23) and the eccentric sleeve (24) to limit the circumferential rotation of the eccentric sleeve (24); and the distance between the central axis of the main shaft (22) and the central axis of the eccentric sleeve (24) can be adjusted by rotating the eccentric shaft (21).

5. The multi-surface superfinishing device according to claim 2, characterized in that: The angle adjustment device (70) comprises a mounting seat (71), a servo drive mechanism (72) disposed on the mounting seat (71), and a turntable (73) rotatably connected to the mounting seat (71) and driven to rotate by the servo drive mechanism (72); the shaft sleeve (23) extends into a central hole of the turntable (73) and is connected to the turntable (73); and the bearing plate (40) is connected to the turntable (73).

6. A multi-surface superfinishing device according to claim 2, characterized in that: The rotary drive device (10) comprises a servo motor (11), a first synchronous pulley (12) connected to an output end of the servo motor (11), a second synchronous pulley (13) sleeved on the main shaft (22), and a first synchronous belt (14) installed between the first synchronous pulley (12) and the second synchronous pulley (13).

7. The multi-surface superfinishing grinding device according to claim 5, characterized in that: It also includes a seat body (81), a first synchronous belt pulley (82), and a second synchronous belt pulley (83); an encoder (84) is installed on the first synchronous belt pulley (82); the encoder (84) is used to obtain the angle of the turntable (73); a second synchronous belt (85) is installed between the first synchronous belt pulley (82) and the second synchronous belt pulley (83); the second synchronous belt pulley (83) is sleeved on the shaft sleeve (23).

8. The multi-surface superfinishing grinding device according to claim 1, characterized in that: A connecting sleeve (32) is connected to the inner wall of the driving hole (31), a first guide rail (41) is provided between the outer end of the oscillating slide plate (30) and the inner hole of the bearing plate (40), the first guide rail (41) comprising a cross guide rail, and the telescopic direction of the telescopic member (50) is consistent with the extension direction of the first guide rail (41).

9. The multi-surface superfinishing grinding device according to claim 1, characterized in that: The telescopic member (50) comprises a pneumatic slide (51), the pneumatic slide (51) comprising a base (52), a second guide rail (53), a slide (54) slidably connected to the base (52) via the second guide rail (53), a cylinder sleeve (55) and a piston (56), the cylinder sleeve (55) being installed in the base (52), the piston (56) being movably connected in the cylinder sleeve (55) and connected to the slide (54), and the second guide rail (53) comprising a cross guide rail; the grinding assembly (60) comprises an oilstone rack (61) mounted on the slide (54), an oilstone clamp (62) mounted on the oilstone rack (61), and an oilstone (63) clamped on the oilstone clamp (62).

10. A multi-surface superfinishing system, characterized in that: The multi-surface superfinishing grinding device according to any one of claims 1 to 9 further comprises: A workpiece turntable (100) is used to drive the workpiece (200) to be ground to rotate around a Z axis; The displacement mechanism is arranged on one side of the workpiece turntable (100), and comprises an X-axis driving device (300) and a Z-axis driving device (400) driven by the X-axis driving device (300), wherein the Z-axis driving device (400) is connected to the multi-surface superfinishing grinding device.

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