High-precision polishing device for sleeve forgings

Abstract

The high-precision polishing device comprises a machine frame and a driving unit, the driving unit comprises a driving part, a first adjusting part and a second adjusting part, an inner grinding part and an outer grinding part are installed on the two sides of the machine frame respectively, the driving part is installed on the machine frame, and the first adjusting part is installed on the outer grinding part. The driving part can move in the direction of the connecting line between the inner grinding part and the outer grinding part, the first adjusting part and the second adjusting part are installed on the two sides of the driving part correspondingly, and an inner supporting part used for fixing a sleeve from the interior is installed on the first adjusting part. A clamping piece used for clamping and fixing the sleeve is installed on the second adjusting piece, the first adjusting piece is used for driving the sleeve to move and polishing and grinding the outer surface through the outer grinding piece, and the second adjusting piece is used for driving the sleeve to move and polishing and grinding the inner surface through the inner lapping magic sword. The polishing device has the effect of further improving the polishing efficiency of the sleeve forgings.

Description

Technical Field

[0001] This application relates to the field of polishing equipment for casing forgings, and particularly to a high-precision polishing device for casing forgings. Background Art

[0002] Casing forgings, as key components in modern industrial manufacturing, play an important role in fields such as aerospace and petrochemical industries. With the continuous improvement of requirements for product precision and surface quality, their processing technology, especially the polishing link, becomes particularly important. High-quality casing forgings not only affect the performance of the whole machine but also directly impact the safety and reliability of equipment operation. Therefore, developing efficient and stable polishing methods for casing forgings has become the focus of industry attention. Currently, there are mainly two ways for casing forging polishing: traditional manual or semi-automatic polishing and emerging automated polishing systems. Manual polishing relies on workers holding abrasive tools for operation. Although it has a certain degree of flexibility and can adjust polishing parameters at any time to meet different needs, it is inefficient due to manpower limitations, and the product quality is easily affected by individual technical levels and is unstable. To improve these deficiencies, the industry has gradually introduced automated polishing solutions based on numerical control machine tools or multi-axis robotic arms. Such technologies can significantly improve positioning accuracy and repeatability, meeting higher-standard quality control requirements. However, the implementation of the above full automation often comes with extremely high cost expenditures, which makes it difficult for many small and medium-sized enterprises to popularize and apply such high-end equipment due to economic pressure. In addition, some enterprises have tried to complete specific processes through fixed single-function polishing devices, such as setting up separate machines for processing the outer surface and inner hole surface respectively. Although it can reduce costs to a certain extent, it still fails to completely solve the efficiency problem. The common problem of existing polishing methods is that they cannot simultaneously achieve efficient integrated processing of the inner and outer surfaces of casing forgings. When comprehensive polishing is required for different parts of the same workpiece, such as the outer circumferential surface and the inner hole wall, the part must be transferred between multiple independently operating devices successively to achieve the goal. This process inevitably increases additional operating steps, prolongs the overall operation cycle, and seriously affects productivity. Summary of the Invention

[0003] In order to further improve the polishing efficiency of casing forgings, this application provides a high-precision polishing device for casing forgings.

[0004] The high-precision polishing device for casing forgings provided by this application adopts the following technical solutions: A high-precision polishing device for casing forgings, comprising a frame and a driving unit. The driving unit includes a driving member, a first adjusting member, and a second adjusting member. Inner polishing members and outer polishing members are respectively installed on both sides of the frame. The driving member is installed on the frame and can move along the connection line direction between the inner polishing member and the outer polishing member. The first adjusting member and the second adjusting member are respectively installed on both sides of the driving member. An inner support member for fixing the casing from the inside is installed on the first adjusting member, and a clamping member for clamping and fixing the casing is installed on the second adjusting member. The first adjusting member is used to drive the casing to move and polish the outer surface through the outer polishing member, and the second adjusting member is used to drive the casing to move and polish the inner surface through the inner polishing member.

[0005] By adopting the above technical solution, the polishing device can simultaneously complete the polishing work of the inner and outer surfaces of the casing forging, significantly improving the processing efficiency. Specifically, the design of installing the inner polishing member and the outer polishing member on both sides of the frame enables the device to have the ability to synchronously process the inner and outer surfaces of the casing forging, avoiding the problem of needing to replace equipment in the traditional method. The driving member in the driving unit can move along the connection line direction between the inner polishing member and the outer polishing member, ensuring the accurate positioning and stable movement of the casing during the processing. The inner support member on the first adjusting member realizes the function of fixing the casing from the inside, while the clamping member on the second adjusting member is responsible for external clamping and fixing. The two work together to effectively improve the stability and accuracy of the casing fixation. In addition, the operation mode of driving the casing to move by the first adjusting member and polishing the outer surface through the outer polishing member, and driving the casing to move by the second adjusting member and polishing the inner surface through the inner polishing member further optimizes the process flow, reduces manual intervention, and thus ensures the consistency and high quality of the product.

[0006] In a specific feasible implementation, the driving member includes a driving motor, a driving lead screw, and a driving seat. The driving motor is installed on the frame. The driving lead screw is fixedly connected to the output shaft of the driving motor. The driving lead screw is arranged along the connection line direction between the inner polishing member and the outer polishing member. The driving seat is slidably connected to the frame. The driving lead screw passes through the driving seat and is drivingly connected to the driving seat. The first adjusting member and the second adjusting member are oppositely installed on both sides of the driving seat.

[0007] By adopting the above technical solution, the specific structural design of the driving member is realized, enabling the device to accurately control the moving positions of the first adjusting member and the second adjusting member. Specifically, the driving motor, through the cooperation of the driving lead screw and the driving seat, can accurately adjust the position between the inner polishing member and the outer polishing member, thereby ensuring the stability and accuracy of the casing forging during the polishing process. This design not only improves the polishing efficiency but also effectively reduces the errors caused by manual intervention, enhancing the consistency and quality of the product.

[0008] In a specific feasible implementation, the first adjusting member and the second adjusting member are arranged with the same structure. The first adjusting member includes an adjusting cylinder and an adjusting seat. The adjusting cylinder is installed on the driving seat, the adjusting seat is fixedly connected to the piston rod of the adjusting cylinder, the inner support member is installed on the adjusting seat, and the clamping member is installed on the second adjusting member in the same manner.

[0009] By adopting the above technical solution, the unified design of the structures of the first adjusting member and the second adjusting member is realized, the manufacturing process of the device is simplified, and the production cost is reduced. Specifically, the adjusting cylinder is used to push the adjusting seat for position adjustment, so that the inner support member can accurately adapt to the internal space requirements of sleeve forgings of different specifications, and at the same time ensure that the clamping member can stably clamp the outside of the sleeve, improving the overall adaptability and operation convenience of the device.

[0010] In a specific feasible implementation, the inner support member includes a rotating motor, a support rod, a limiting cylinder, a limiting screw, a hinged rod and a support plate. The rotating motor is installed on the adjusting seat. One end of the support rod is fixedly connected to the output shaft of the rotating motor. A threaded groove is opened at the other end of the support rod. The limiting screw is rotatably connected in the limiting cylinder. The limiting cylinder is sleeved on the support rod and can slide relative to the support rod. One end of the limiting screw is arranged in the threaded groove and is threadedly connected to the support rod. One end of the hinged rod is hinged on the limiting cylinder, and the other end is hinged on the lower plate surface of the support plate. A limiting plate is installed on the support rod, and a sliding groove is opened on the limiting plate. One end of the support plate is slidably connected in the sliding groove.

[0011] By adopting the above technical solution, the accurate and stable support and fixation of the inner surface of the sleeve are realized. Specifically, the rotating motor drives the support rod to rotate. By the interaction between the limiting screw and the threaded groove on the support rod, the limiting cylinder can accurately move on the support rod, thereby driving the hinged rod to expand or retract, and finally controlling the position change of the support plate. This design can not only adapt to sleeves of different diameters, but also ensure that the inside of the sleeve receives uniform and reliable supporting forces during the polishing process, effectively avoiding problems such as deformation or damage caused by unstable support. At the same time, the sliding groove on the limiting plate further improves the smoothness and accuracy of the movement of the support plate, laying a solid foundation for subsequent high-precision polishing operations.

[0012] In a specific feasible implementation, there are two hinged rods, and one end of each of the two hinged rods is respectively hinged on the parts at both ends of the limiting cylinder.

[0013] By adopting the above technical solution, the design that the two articulated rods are respectively articulated at both ends of the limiting cylinder makes the unfolding and folding of the support plate more stable and reliable. This design effectively improves the working stability of the inner support member, can better adapt to casings of different diameters during the fixing process inside the casing, and at the same time ensures that the casing will not shift or vibrate during polishing, thereby improving the polishing accuracy and quality.

[0014] In a specific feasible implementation, a plurality of groups of the support plates are provided, the number of the articulated rods corresponds to the support plates, and the plurality of the support plates are uniformly installed along the circumferential direction of the limiting cylinder.

[0015] By adopting the above technical solution, setting a plurality of support plates and uniformly distributing them along the circumferential direction of the limiting cylinder can ensure a comprehensive and stable support for the inner wall of the casing, avoiding deformation problems caused by uneven local stress; the design that the number of the articulated rods corresponds to the support plates one by one ensures that the position of each support plate can be independently adjusted, so as to adapt to the requirements of casings of different diameters; the uniformly arranged structural design improves the overall balance of the device, reduces vibration and shaking during the polishing process, and improves the processing accuracy and surface quality.

[0016] In a specific feasible implementation, the clamping member includes a clamping seat, a limiting ring, a clamping rod, a locking motor, a locking screw rod and a limiting block. The clamping seat is installed on the second adjusting member, the limiting ring is installed on the clamping seat and can rotate relative to the clamping seat, the locking motor is installed on the clamping seat, the locking screw rod is fixedly connected with the output shaft of the locking motor, the limiting block is rotatably connected to the limiting ring, the locking screw rod penetrates through the limiting block and is in driving threaded connection with the limiting block, a limiting sleeve is arranged on the limiting ring, one end of the clamping rod is rotatably connected to the clamping seat, the other end of the clamping rod passes through the limiting sleeve and is provided with a rubber wheel, and an opening for the casing to pass through is formed in the clamping seat corresponding to the limiting ring.

[0017] By adopting the above technical solution, the combined design of the clamping seat and the limiting ring enables the clamping rod to flexibly adjust its position on the limiting ring, adapts to casing forgings of different diameters, and improves the applicability of the device; the locking motor drives the locking screw rod to rotate, and uses the threaded connection to push the limiting block to move, thereby pressing the clamping rod in the limiting sleeve to closely fit the outer wall of the casing, ensuring uniform distribution of the clamping force and avoiding damage to the surface of the workpiece; the design of the rubber wheel effectively protects the surface of the casing forging from being scratched by hard materials, and at the same time increases the friction force, prevents slipping during the processing process, and improves the stability of the polishing operation.

[0018] In a specific feasible implementation, a plurality of the clamping rods are provided, the number of the limiting sleeves corresponds, the limiting sleeves are uniformly installed on the circumferential part of the limiting ring, and the clamping rods correspond to the limiting sleeves.

[0019] By adopting the above technical solution, stable clamping and precise positioning of the casing forging are achieved. Specifically, the cooperative design of several clamping rods and the limiting sleeve makes the clamping force distribution more uniform, effectively avoiding the deformation problem caused by single-point stress and improving the stability during the processing. At the same time, the circumferentially uniform arrangement of the limiting sleeves on the limiting ring ensures that casing forgings of different specifications can be reliably fixed, enhancing the applicability of the device. This design scheme significantly improves the consistency and accuracy of the polishing operation, providing a guarantee for the subsequent high-efficiency and high-quality polishing of the inner and outer surfaces.

[0020] In a specific feasible implementation, the outer grinding member includes a grinding frame, an outer grinding motor, belt pulleys, and a polishing belt. The grinding frame is connected to the machine frame. A number of belt pulleys are provided, and the number of belt pulleys are dispersedly installed on the grinding frame. The polishing belt is wound around a number of belt pulleys, and the output shaft of the outer grinding motor is fixedly connected to one of the belt pulleys.

[0021] By adopting the above technical solution, the outer grinding member consists of a grinding frame, an outer grinding motor, belt pulleys, and a polishing belt. Through the design of dispersedly arranging multiple belt pulleys and cooperating with the polishing belt, it can ensure the stable operation of the polishing belt and comprehensively cover the outer surface of the casing, improving the polishing efficiency and uniformity; fixedly connecting the output shaft of the outer grinding motor to one of the belt pulleys can precisely control the running speed and power transmission of the polishing belt, ensuring the consistency and stability of the polishing process, thereby improving the quality and accuracy of the outer surface of the casing forging.

[0022] In a specific feasible implementation, the inner grinding member includes an inner grinding motor and a rotating brush. The outer grinding motor is installed on the machine frame, and the output shaft is arranged facing the middle part of the connection line between the outer grinding member and the inner grinding member. The rotating brush is installed on the output shaft of the inner grinding motor.

[0023] By adopting the above technical solution, efficient and precise polishing of the inner surface of the casing forging is achieved. Specifically, the inner grinding member consists of an inner grinding motor and a rotating brush. The installation position of the inner grinding motor ensures that its output shaft faces the middle part of the connection line between the inner grinding member and the outer grinding member, enabling the rotating brush to operate at an accurate position. This design not only improves the accessibility of the inner surface polishing but also significantly enhances the consistency and accuracy of the polishing. At the same time, the setting of the rotating brush is more flexible than the traditional method and can adapt to the inner walls of casings with different diameters, further enhancing the applicable range and processing efficiency of the device.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By coordinating the actions of the inner support member and the clamping member through the driving unit, the synchronous machining of the inner and outer surfaces of the casing forging on a single device is achieved, effectively reducing the time loss of workpiece transfer and significantly improving the machining efficiency. 2. The inner support member and the clamping member fix the casing forging from the inside and the outside respectively, ensuring the stability and positioning accuracy of the workpiece during the machining process, thereby improving the consistency of the polishing quality. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of an embodiment of the present application.

[0026] Figure 2 It is a schematic structural diagram of the inner support member in an embodiment of the present application.

[0027] Figure 3 It is a sectional view of the inner support member.

[0028] Figure 4 It is a schematic structural diagram of the clamping member in an embodiment of the present application.

[0029] Description of the reference numerals: 1, frame; 2, driving unit; 21, driving member; 211, driving motor; 212, driving lead screw; 213, driving seat; 22, first adjusting member; 221, adjusting cylinder; 222, adjusting seat; 23, second adjusting member; 3, inner support member; 31, rotating motor; 32, support rod; 33, limiting cylinder; 34, limiting screw; 35, hinged rod; 36, support plate; 4, clamping member; 41, clamping seat; 42, limiting ring; 43, clamping rod; 44, locking motor; 45, locking screw; 46, limiting block; 5, outer grinding member; 51, grinding frame; 52, outer grinding motor; 53, belt pulley; 54, polishing belt; 6, inner grinding member; 61, inner grinding motor; 62, rotating brush. Detailed Embodiments

[0030] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "arranged" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0031] An embodiment of the present application discloses a high-precision polishing device for a casing forging.

[0032] As Figure 1As shown in the figure, the high-precision polishing device for casing forgings includes a frame 1 and a driving unit 2, where the driving unit 2 consists of a driving member 21, a first adjusting member 22, and a second adjusting member 23. Specifically, an inner grinding member 6 and an outer grinding member 5 are respectively installed on both sides of the frame 1. The driving member 21 can move on the frame 1 along the connection line direction between the inner grinding member 6 and the outer grinding member 5. The first adjusting member 22 and the second adjusting member 23 are respectively installed on both sides of the driving member 21, used to drive the casing to move and complete the polishing operation by using the outer grinding member 5 and the inner grinding member 6 in sequence.

[0033] The driving member 21 includes a driving motor 211, a driving lead screw 212, and a driving seat 213. The driving motor 211 is installed on the top of the frame 1, and its output shaft is fixedly connected to one end of the driving lead screw 212 through a coupling. The driving lead screw 212 is arranged horizontally, runs through the entire working area, and covers the distance between the inner grinding member 6 and the outer grinding member 5. The driving seat 213 is in the form of a sliding platform, with a slide rail at the bottom that matches the guide groove on the frame 1, and can smoothly move left and right under the action of the driving lead screw 212. For example, a ball screw pair can be selected as the transmission component to reduce friction and improve transmission efficiency; at the same time, it also supports the use of a linear module or other linear motion modules for replacement.

[0034] As Figures 2-3 shown in the figure, the first adjusting member 22 includes an adjusting cylinder 221 and an adjusting seat 222. The adjusting cylinder 221 is installed on the driving seat 213, and the adjusting seat 222 is fixedly connected to the piston rod of the adjusting cylinder 221. An inner support member 3 for fixing the casing from the inside is installed on the first adjusting member 22. The inner support member 3 includes a rotating motor 31, a support rod 32, a limiting cylinder 33, a limiting screw 34, a hinged rod 35, and a support plate 36. The rotating motor 31 is installed on the adjusting seat 222. One end of the support rod 32 is fixedly connected to the output shaft of the rotating motor 31, and the other end is provided with a threaded groove. The limiting screw 34 is rotatably connected inside the limiting cylinder 33. The limiting cylinder 33 is sleeved on the support rod 32 and can slide relative to the support rod 32. One end of the limiting screw 34 is arranged in the threaded groove and is threadedly connected to the support rod 32. One end of the hinged rod 35 is hinged to the limiting cylinder 33, and the other end is hinged to the lower plate surface of the support plate 36. A limiting plate is installed on the support rod 32, and a chute is opened on the limiting plate. One end of the support plate 36 is slidably connected in the chute. There are two hinged rods 35, and one ends of the two hinged rods 35 are respectively hinged to the parts at both ends of the limiting cylinder 33. There are multiple groups of support plates 36, and the number of hinged rods 35 corresponds to the number of support plates 36. Several support plates 36 are evenly distributed along the circumferential direction of the limiting cylinder 33. These components are all made of metal materials with high temperature resistance and strong wear resistance to cope with the severe environment test of high-intensity continuous work.

[0035] Specifically, the rotating motor 31 drives the support rod 32 to rotate. By utilizing the interaction between the limit screw 34 and the thread groove on the support rod 32, the limit cylinder 33 can move precisely on the support rod 32, thereby driving the hinge rod 35 to unfold or fold, and ultimately controlling the position change of the support plate 36. This design can not only adapt to sleeves of different diameters but also ensure that the inside of the sleeve receives a uniform and reliable supporting force during the polishing process, effectively avoiding problems such as deformation or damage caused by unstable support. At the same time, the sliding groove on the limit plate further improves the smoothness and accuracy of the movement of the support plate 36, laying a solid foundation for subsequent high-precision polishing operations.

[0036] As Figure 4 shown, the structure of the second adjusting member 23 is similar to that of the first adjusting member 22, and a clamping member 4 for clamping and fixing the sleeve is installed thereon. The clamping member 4 includes a clamping seat 41, a limit ring 42, clamping rods 43, a locking motor 44, a locking screw 45, and a limit block 46. The clamping seat 41 is installed on the second adjusting member 23. The limit ring 42 is installed on the clamping seat 41 and can rotate relative to the clamping seat 41. The locking motor 44 is installed on the clamping seat 41. The locking screw 45 is fixedly connected to the output shaft of the locking motor 44. The limit block 46 is rotatably connected to the limit ring 42. The locking screw 45 passes through the limit block 46 and is in driving threaded connection therewith. A limit sleeve is provided on the limit ring 42. One end of the clamping rod 43 is rotatably connected to the clamping seat 41, and the other end passes through the limit sleeve and is provided with a rubber wheel. An opening for the sleeve to pass through is provided on the clamping seat 41 corresponding to the limit ring 42. There are multiple clamping rods 43, and the number of limit sleeves is correspondingly set. The limit sleeves are evenly installed on the circumferential part of the limit ring 42, and the clamping rods 43 are arranged corresponding to the limit sleeves.

[0037] The cooperative design of the clamping seat 41 and the limit ring 42 enables the clamping rods 43 to flexibly adjust their positions on the limit ring 42, adapting to sleeve forgings of different diameters and improving the applicability of the device. The locking motor 44 drives the locking screw 45 to rotate, and uses the threaded connection to push the limit block 46 to move, thereby pressing the clamping rods 43 in the limit sleeve to closely fit the outer wall of the sleeve, ensuring uniform distribution of the clamping force and avoiding damage to the surface of the workpiece. The design of the rubber wheel effectively protects the surface of the sleeve forging from being scratched by hard materials, and at the same time increases the friction force, preventing slipping during the processing and improving the stability of the polishing operation.

[0038] The outer grinding member 5 includes a grinding frame 51, an outer grinding motor 52, belt pulleys 53, and a polishing belt 54. The grinding frame 51 is connected to the frame 1. A number of belt pulleys 53 are provided, and the number of belt pulleys 53 are dispersedly installed on the grinding frame 51. The polishing belt 54 is wound around a number of belt pulleys 53, and the output shaft of the outer grinding motor 52 is fixedly connected to one of the belt pulleys 53.

[0039] The inner grinding member 6 includes an inner grinding motor 61 and a rotary brush 62. The inner grinding motor 61 is installed on the frame 1, and the output shaft is arranged facing the middle part of the connection line between the outer grinding member 5 and the inner grinding member 6. The rotary brush 62 is installed on the output shaft of the inner grinding motor 61.

[0040] The implementation principle of a high-precision polishing device for casing forgings in an embodiment of the present application is as follows: The polishing device can simultaneously complete the polishing and grinding work on the inner and outer surfaces of the casing forging, significantly improving the processing efficiency. Specifically, the design of installing the inner grinding member 6 and the outer grinding member 5 on both sides of the frame 1 enables the device to have the ability to synchronously process the inner and outer surfaces of the casing forging, avoiding the problem of equipment replacement in traditional methods. The driving member 21 in the driving unit 2 can move along the connection line direction between the inner grinding member 6 and the outer grinding member 5, ensuring the accurate positioning and stable movement of the casing during processing. The inner support member 3 on the first adjusting member 22 realizes the function of fixing the casing from the inside, while the clamping member 4 on the second adjusting member 23 is responsible for external clamping and fixing. The two cooperate to effectively improve the stability and accuracy of the casing fixation. In addition, the operation mode of driving the casing to move by the first adjusting member 22 and polishing the outer surface through the outer grinding member 5, and driving the casing to move by the second adjusting member 23 and polishing the inner surface through the inner grinding member 6 further optimizes the process flow and reduces manual intervention, thereby ensuring the consistency and high quality of the product.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-precision polishing device for a sleeve forging, characterized in that: The invention comprises a frame (1) and a driving unit (2), wherein the driving unit (2) comprises a driving member (21), a first adjusting member (22) and a second adjusting member (23); an inner polishing member (6) and an outer polishing member (5) are respectively mounted on both sides of the frame (1); the driving member (21) is mounted on the frame (1); the driving member (21) can move along the direction of the line connecting the inner polishing member (6) and the outer polishing member (5); the first adjusting member (22) and the second adjusting member (23) are respectively mounted on both sides of the driving member (21); an inner support member (3) for fixing a sleeve from the inside is mounted on the first adjusting member (22); a clamping member (4) for clamping and fixing the sleeve is mounted on the second adjusting member (23); the first adjusting member (22) is used to drive the sleeve to move and polish the outer surface through the outer polishing member (5); the second adjusting member (23) is used to drive the sleeve to move and polish the inner surface through the inner magic sword.

2. The high-precision polishing device for sleeve forgings according to claim 1, characterized in that: The driving member (21) comprises a driving motor (211), a driving screw rod (212) and a driving seat (213); the driving motor (211) is mounted on the frame (1); the driving screw rod (212) is fixedly connected to the output shaft of the driving motor (211); the driving screw rod (212) is arranged along the connecting line between the inner grinding member (6) and the outer grinding member (5); the driving seat (213) is slidably connected to the frame (1); the driving screw rod (212) passes through the driving seat (213) and is drivingly connected to the driving seat (213); the first adjusting member (22) and the second adjusting member (23) are relatively mounted on both sides of the driving seat (213).

3. The high-precision polishing device for sleeve forgings according to claim 2, characterized in that: The first adjusting member (22) and the second adjusting member (23) are arranged in the same structure. The first adjusting member (22) comprises an adjusting cylinder (221) and an adjusting seat (222). The adjusting cylinder (221) is mounted on a driving seat (213). The adjusting seat (222) is fixedly connected to a piston rod of the adjusting cylinder (221). The inner support member (3) is mounted on the adjusting seat (222). The clamping member (4) is mounted on the second adjusting member (23) in the same manner.

4. The high-precision polishing device for sleeve forgings according to claim 1, characterized in that: The inner support member (3) comprises a rotating motor (31), a support rod (32), a limiting cylinder (33), a limiting screw (34), a hinge rod (35) and a supporting plate (36); the rotating motor (31) is mounted on the adjusting seat (222); one end of the support rod (32) is fixedly connected to the output shaft of the rotating motor (31); the other end of the support rod (32) is provided with a threaded groove; the limiting screw (34) is rotatably connected in the limiting cylinder (33); the limiting The positioning tube (33) is sleeved on the support rod (32) and can slide relative to the support rod (32). One end of the limiting screw (34) is arranged in the thread groove and is threadedly connected to the support rod (32). One end of the hinge rod (35) is hinged on the limiting tube (33) and the other end is hinged on the lower plate surface of the support plate (36). A limiting plate is installed on the support rod (32). A sliding groove is provided on the limiting plate. One end of the support plate (36) is slidably connected in the sliding groove.

5. The high-precision polishing device for sleeve forgings according to claim 1, characterized in that: Two hinged rods (35) are provided, and one end of the two hinged rods (35) is hinged to the positions at both ends of the limiting cylinder (33) respectively.

6. The high-precision polishing device for sleeve forgings according to claim 4, characterized in that: The support plates (36) are provided in a plurality of groups, the number of the hinge rods (35) corresponds to the number of the support plates (36), and the plurality of support plates (36) are evenly installed along the circumference of the limiting cylinder (33).

7. The high-precision polishing device for sleeve forgings according to claim 1, characterized in that: The clamping member (4) comprises a clamping seat (41), a limiting ring (42), a clamping rod (43), a locking motor (44), a locking screw (45) and a limiting block (46); the clamping seat (41) is mounted on the second adjusting member (23); the limiting ring (42) is mounted on the clamping seat (41) and can rotate relative to the clamping seat (41); the locking motor (44) is mounted on the clamping seat (41); and the locking screw (45) is fixedly connected to an output shaft of the locking motor (44). The limit block (46) is rotatably connected to the limit ring (42), the locking screw (45) passes through the limit block (46) and is threadedly connected to the limit block (46), a limit sleeve is provided on the limit ring (42), one end of the clamping rod (43) is rotatably connected to the clamping seat (41), the other end of the clamping rod (43) passes through the limit sleeve and is equipped with a rubber wheel, and an opening for the sleeve to pass through is opened on the clamping seat (41) corresponding to the limit ring (42).

8. The high-precision polishing device for sleeve forgings according to claim 7, characterized in that: A plurality of the clamping rods (43) are provided, and the number of the limiting sleeves is set correspondingly. The limiting sleeves are evenly installed on the circumferential part of the limiting ring (42), and the clamping rods (43) are set corresponding to the limiting sleeves.

9. The high-precision polishing device for sleeve forgings according to claim 1, characterized in that: The external grinding member (5) comprises a grinding frame (51), an external grinding motor (52), a pulley (53) and a polishing belt (54); the grinding frame (51) is connected to the frame (1); a plurality of pulleys (53) are provided, and the plurality of pulleys (53) are dispersedly installed on the grinding frame (51); the polishing belt (54) is arranged around the plurality of pulleys (53); and the output shaft of the external grinding motor (52) is fixedly connected to one of the pulleys (53).

10. The high-precision polishing device for sleeve forgings according to claim 1, characterized in that: The inner grinding member (6) comprises an inner grinding motor (61) and a rotating brush (62); the outer grinding motor (52) is mounted on the frame (1), and the output shaft is arranged at the middle of the line connecting the outer grinding member (5) and the inner grinding member (6); and the rotating brush (62) is mounted on the output shaft of the inner grinding motor (61).

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