Three-point positioning type out-of-round correction device for thin-wall cylinder barrel

Abstract

The invention discloses a three-point positioning type thin-wall cylinder barrel out-of-roundness correction device, and belongs to the technical field of thin-wall cylinder barrel out-of-roundness correction. A supporting plate is included. A positioning assembly is rotationally arranged on the supporting plate. The positioning assembly is used for fixing the thin-wall cylinder barrel and can drive the thin-wall cylinder barrel to rotate, and therefore positioning in the compression direction of the thin-wall cylinder barrel is completed. Furthermore, a compression assembly is further included. The compression assembly comprises an upper pressing plate, a lower pressing plate and a compression piece. Wherein the upper pressing plate and the lower pressing plate are oppositely arranged, and the thin-wall cylinder barrel fixed by the positioning assembly is located between the upper pressing plate and the lower pressing plate. And the compression piece is used for driving the upper pressing plate to move towards the lower pressing plate. And a distance is still reserved between the thin-wall cylinder barrel positioned by the positioning assembly and the lower pressing plate, so that the lower pressing plate cannot provide support for the thin-wall cylinder barrel in the downward pressing process of the upper pressing plate. The adjusting assembly is connected with the supporting plate and used for driving the thin-wall cylinder barrel to move in the direction close to or away from the lower pressing plate.

Description

Technical Field

[0001] This application relates to the technical field of out-of-round correction of thin-walled cylinder barrels, and particularly relates to a three-point positioning type out-of-round correction device for thin-walled cylinder barrels. Background Art

[0002] The application background of thin-walled cylinder barrels in the energy field has been increasingly concerned, mainly due to the global demand for high-efficiency and sustainable energy solutions. With the rapid development of renewable energy and the increasingly significant environmental impact of traditional energy, thin-walled cylinder barrels, as key components, play an important role in various energy conversion and storage systems. For example, thin-walled cylinder barrels show their potential in hydrogen energy technology. By optimizing design and material use, the energy density and reliability of the system are enhanced. With the continuous progress of energy technology, the application of thin-walled cylinder barrels will further promote the innovation and sustainable development of the energy industry.

[0003] Due to its thin wall thickness, a thin-walled cylinder barrel is prone to deformation during the processing, resulting in out-of-roundness. The out-of-roundness of a thin-walled cylinder barrel will cause problems such as poor gas tightness, reduced hydrogen compression efficiency, and reduced heat conduction efficiency. After the thin-walled cylinder barrel becomes out-of-round, generally, the method of manually knocking the high point of the out-of-round position is adopted to deal with it. However, the method of knocking to round the cylinder barrel has a poor rounding effect and a low rounding accuracy. Summary of the Invention

[0004] The purpose of this application is to provide a three-point positioning type out-of-round correction device for thin-walled cylinder barrels, which is used to solve the problem of poor out-of-round correction effect of thin-walled cylinder barrels in the prior art.

[0005] To solve the above technical problems, the following technical solutions are adopted in this application:

[0006] This application provides a three-point positioning type out-of-round correction device for thin-walled cylinder barrels, including:

[0007] A support plate;

[0008] A positioning assembly, rotatably arranged on the support plate, the positioning assembly is used to fix the thin-walled cylinder barrel, and by rotating the positioning assembly, the thin-walled cylinder barrel can be driven to rotate;

[0009] A compression assembly, including: an upper pressure plate, a lower pressure plate, and a compression member, the upper pressure plate and the lower pressure plate are arranged oppositely, the thin-walled cylinder barrel fixed by the positioning assembly is located between the upper pressure plate and the lower pressure plate, and the compression member is used to drive the upper pressure plate to move towards the lower pressure plate;

[0010] An adjustment assembly, connected to the support plate, is used to drive the thin-walled cylinder barrel to move towards or away from the lower pressure plate.

[0011] When this solution is in use, first, the thin-walled cylinder is fixed by the positioning component. Before fixing the thin-walled cylinder, the support plate can be moved to a suitable height through the adjustment component to avoid interference between the thin-walled cylinder and the upper pressing plate or the lower pressing plate. Then, the radial major axis of the out-of-round thin-walled cylinder is adjusted to be perpendicular to the opposite surfaces of the upper pressing plate and the lower pressing plate, thereby completing the positioning of the compression direction of the thin-walled cylinder. Then, the support plate is driven to move through the adjustment component, and then the thin-walled cylinder is driven to move towards the direction close to the lower pressing plate, so that the thin-walled cylinder approaches the lower pressing plate. The movement stops when the thin-walled cylinder contacts the surface of the lower pressing plate. Finally, the upper pressing plate is driven to move towards the lower pressing plate by the compression component. The thin-walled cylinder is compressed in the major axis direction by the upper pressing plate. The out-of-round part of the thin-walled cylinder is deformed under pressure, thereby achieving the purpose of correcting the out-of-roundness, and effectively solving the problem of poor out-of-roundness correction effect of the thin-walled cylinder in the prior art.

[0012] Optionally, the positioning component includes: a bearing, the outer ring of the bearing is fixedly penetrated in the support plate, a rotating disk and a driving member are respectively arranged on both axial sides of the bearing, the rotating disk and the driving member are respectively connected to the inner ring of the bearing, and a plurality of clamping members are arranged on the side surface of the rotating disk facing away from the support plate, and the plurality of clamping members are distributed around the circumference of the bearing, and the driving member is used to drive the bearing to rotate.

[0013] In this solution, the bearing is fixedly penetrated in the support plate, serving as the rotation support basis for the entire positioning component to ensure the stability and flexibility during the rotation process. A rotating disk and a driving member are respectively arranged on both axial sides of the bearing, and both the rotating disk and the driving member are connected to the inner ring of the bearing. This connection method enables the rotating disk and the driving member to rotate synchronously. A plurality of clamping members are arranged on the side surface of the rotating disk facing away from the support plate, and the plurality of clamping members are distributed around the circumference of the bearing, and are used to clamp and fix the thin-walled cylinder from multiple positions to ensure the stability of the thin-walled cylinder. The driving member is used to drive the bearing to rotate, and then drive the rotating disk and the thin-walled cylinder fixed on the rotating disk to rotate, so as to realize the adjustment of the position of the thin-walled cylinder.

[0014] When the driving member works, it drives the inner ring of the bearing to rotate. Since the rotating disk is connected to the inner ring of the bearing, the rotating disk will also rotate accordingly, and then drive the thin-walled cylinder fixed on the clamping member to rotate, so that the thin-walled cylinder can be conveniently adjusted to a suitable position.

[0015] Optionally, the clamping member includes: a fixed bracket, the fixed bracket is connected to the rotating disk, a first electric cylinder is arranged on the fixed bracket, a V-shaped positioning block is arranged at the end of the moving end of the first electric cylinder, and the moving end of the first electric cylinder moves along the radial direction of the bearing.

[0016] The end of the mobile end of the first electric cylinder on the fixed bracket is provided with a V-shaped positioning block, and the mobile end of the first electric cylinder moves along the radial direction of the bearing. Through the telescopic movement of the first electric cylinder, the V-shaped positioning block can be driven to move radially, so as to realize the clamping and fixing of thin-walled cylinders with different diameters. The design of the V-shaped positioning block can better adapt to the shape of the thin-walled cylinder and provide a more stable clamping effect.

[0017] Optionally, the driving member includes a first gear coaxially connected to the inner ring of the bearing. There is a motor fixing plate on the support plate, and a first motor is arranged on the motor fixing plate. The output end of the first motor is connected with a second gear, and the second gear meshes with the first gear.

[0018] When the first motor is started, the second gear rotates. Since the second gear meshes with the first gear, it will drive the first gear to rotate, and then drive the inner ring of the bearing, the rotating disc and the thin-walled cylinder on the clamping member to rotate synchronously, realizing the rotation adjustment of the thin-walled cylinder, so as to adjust the position of the thin-walled cylinder, and make the long axis of the out-of-round thin-walled cylinder able to be adjusted to be perpendicular to the opposite surfaces of the upper pressing plate and the lower pressing plate.

[0019] Optionally, the compression member includes a second electric cylinder. There are support columns on the lower pressing plate, and a top plate is fixedly connected to the support columns. The second electric cylinder is arranged on the top surface of the top plate, and the mobile end of the second electric cylinder passes through the top plate and is connected with the upper pressing plate.

[0020] When it is necessary to compress and correct the thin-walled cylinder, the second electric cylinder is started, and its mobile end moves downward, driving the upper pressing plate to move towards the lower pressing plate. The upper pressing plate applies pressure to the thin-walled cylinder located between it and the lower pressing plate, so that the thin-walled cylinder is compressed in the long axis direction, thereby realizing the correction of the out-of-round thin-walled cylinder.

[0021] Optionally, the adjusting assembly includes a support. There is a second motor on the support. The output end of the second motor is connected with a lead screw. A nut is threadedly connected to the lead screw. There is a connecting member fixedly connected to the nut on the support plate; a sliding groove is arranged on the support along the axial direction of the lead screw, and a sliding block slidingly connected to the sliding groove is arranged on the support plate.

[0022] In this solution, the second motor drives the lead screw to rotate, driving the connecting member fixedly connected to the nut to move, and then making the support plate slide along the sliding groove, ensuring that the thin-walled cylinder can be accurately moved to a suitable position, creating conditions for subsequent compression and correction.

[0023] Optionally, it further includes a detection component. The detection component includes a fixed seat fixedly connected to the adjustment component. A third electric cylinder is arranged on the fixed seat. The moving end of the third electric cylinder can move along the axial direction of the thin-walled cylinder fixed by the positioning component. A laser distance sensor is arranged on the moving end of the third electric cylinder. The laser distance sensor is used to measure the distance between it and the inner wall of the thin-walled cylinder.

[0024] To make the correction of the out-of-round thin-walled cylinder more accurate, this solution obtains the size information of the out-of-round thin-walled cylinder through the detection component, so as to more accurately obtain the distance required for compressing the thin-walled cylinder. Specifically, during the correction process of the thin-walled cylinder, after the positioning component fixes the thin-walled cylinder, the thin-walled cylinder can be driven to rotate one week by rotating the positioning component. During the rotation process, the laser distance sensor can perform laser detection on the inner wall of the thin-walled cylinder for one week, so as to obtain the size information of the thin-walled cylinder. According to the size information, the major axis size of the out-of-round thin-walled cylinder can be obtained. By subtracting the major axis size from the size of the thin-walled cylinder in the non-out-of-round state, the required compression movement distance of the upper pressure plate can be obtained, making the correction more accurate.

[0025] Compared with the prior art, the beneficial effects achieved by this application are as follows: This application fixes the out-of-round thin-walled cylinder through the positioning component and adjusts its radial major axis to be perpendicular to the opposite surfaces of the upper pressure plate and the lower pressure plate for positioning. Through the adjustment component, it can ensure that the positioned thin-walled cylinder accurately moves to the compression position, creating conditions for subsequent compression correction. Through the compression component, the thin-walled cylinder is compressed in the major axis direction, thereby realizing the correction of the out-of-round thin-walled cylinder. This application realizes the precise correction of the out-of-round thin-walled cylinder through the coordinated work of the compression component, the positioning component, and the adjustment component. It effectively solves the problem of poor out-of-round correction effect of thin-walled cylinders in the prior art. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of some embodiments provided by this application;

[0028] Figure 2 It is a schematic diagram of the structure of the compression component of some embodiments provided by this application;

[0029] Figure 3 It is a front view of the positioning component of some embodiments provided by this application;

[0030] Figure 4 The left view of the positioning component of some embodiments provided by the present application;

[0031] Figure 5 The right view of the positioning component of some embodiments provided by the present application;

[0032] Figure 6 The schematic structural diagram of the adjustment component of some embodiments provided by the present application;

[0033] Figure 7 The schematic connection diagram of the adjustment component and the support plate of some embodiments provided by the present application;

[0034] Figure 8 The schematic structural diagram of the detection component of some embodiments provided by the present application.

[0035] Description of reference numerals: 1 - support plate; 2 - positioning component; 3 - compression component; 4 - adjustment component; 5 - thin-walled cylinder; 6 - detection component; 11 - connecting piece; 12 - slider; 21 - bearing; 22 - rotating disk; 23 - driving member; 24 - clamping member; 231 - first gear; 232 - fixing plate; 233 - first motor; 234 - second gear; 241 - fixing bracket; 242 - first electric cylinder; 243 - positioning block; 31 - upper pressing plate; 32 - lower pressing plate; 33 - second electric cylinder; 34 - support column; 35 - top plate; 41 - support; 42 - second motor; 43 - lead screw; 44 - nut; 45 - universal wheel; 411 - chute; 61 - fixing seat; 62 - third electric cylinder; 63 - laser distance sensor. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present disclosure / the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use.

[0037] Embodiment 1

[0038] This embodiment introduces a three-point positioning type thin-walled cylinder out-of-roundness correction device. Refer to Figure 1 And Figure 2, the three-point positioning type thin-walled cylinder out-of-roundness correction device in this embodiment includes a support plate 1. A positioning assembly 2 is rotatably arranged on the support plate 1. The positioning assembly 2 is used to fix the thin-walled cylinder 5 and can drive the thin-walled cylinder 5 to rotate, so as to complete the positioning of the compression direction of the thin-walled cylinder 5. Further, this embodiment also includes a compression assembly 3. The compression assembly 3 includes: an upper pressure plate 31, a lower pressure plate 32 and a compression member. Among them, the upper pressure plate 31 and the lower pressure plate 32 are arranged opposite to each other, and the thin-walled cylinder 5 fixed by the positioning assembly 2 is located between the upper pressure plate 31 and the lower pressure plate 32. Further, a support column 34 is arranged on the lower pressure plate 32, and a top plate 35 is fixedly connected to the support column 34. The compression member is used to drive the upper pressure plate 31 to move towards the lower pressure plate 32. In this embodiment, the compression member includes a second electric cylinder 33. The second electric cylinder 33 is arranged on the top surface of the top plate 35, and the moving end of the second electric cylinder 33 passes through the top plate 35 and is connected to the upper pressure plate 31. When it is necessary to perform compression correction on the thin-walled cylinder 5, the second electric cylinder 33 is started, and its moving end can drive the upper pressure plate 31 to move towards the lower pressure plate 32. The upper pressure plate 31 exerts pressure on the thin-walled cylinder 5 located between it and the lower pressure plate 32, so that the thin-walled cylinder 5 is compressed in the long axis direction, thereby realizing the correction of the out-of-round thin-walled cylinder 5.

[0039] There is still a distance between the thin-walled cylinder 5 positioned by the positioning assembly 2 and the lower pressure plate 32, so that the lower pressure plate 32 cannot provide support for the thin-walled cylinder 5 during the downward pressing process of the upper pressure plate 31. This embodiment also adjusts the position of the thin-walled cylinder 5 in the compression direction by setting an adjustment assembly 4. The adjustment assembly 4 is connected to the support plate 1 and is used to drive the thin-walled cylinder 5 to move towards or away from the lower pressure plate 32.

[0040] During use, first, the thin-walled cylinder 5 is fixed by the positioning assembly 2. Before fixing the thin-walled cylinder 5, the support plate 1 can be moved to a suitable height through the adjustment assembly 4 to avoid interference between the thin-walled cylinder 5 and the upper pressure plate 31 or the lower pressure plate 32. Then, the long axis of the out-of-round thin-walled cylinder 5 is adjusted to be perpendicular to the opposite surfaces of the upper pressure plate 31 and the lower pressure plate 32. Then, the support plate 1 is driven to move through the adjustment assembly 4, and further drives the thin-walled cylinder 5 to move towards the lower pressure plate 32, so that the thin-walled cylinder 5 approaches the lower pressure plate 32. Stop moving when the thin-walled cylinder 5 contacts the surface of the lower pressure plate 32. Finally, the upper pressure plate 31 is driven to move towards the lower pressure plate 32 by the compression member. The thin-walled cylinder 5 is compressed in the long axis direction by the upper pressure plate 31. The out-of-round part of the thin-walled cylinder 5 is deformed under pressure, so as to achieve the purpose of correcting the out-of-roundness, and effectively solve the problem of poor out-of-roundness correction effect of the thin-walled cylinder 5 in the prior art.

[0041] Embodiment Two:

[0042] Based on the same inventive concept as Embodiment One, refer to Figures 3 to 7, in this embodiment, the positioning component 2 includes a bearing 21. The outer ring of the bearing 21 is fixedly inserted into the support plate 1. The bearing 21 serves as the rotation support basis for the entire positioning component 2 to ensure stability and flexibility during the rotation process. On both axial sides of the bearing 21, a rotating disk 22 and a driving member 23 are respectively arranged, and the rotating disk 22 and the driving member 23 are respectively connected to the inner ring of the bearing 21. This connection method enables the rotating disk 22 and the driving member 23 to rotate synchronously. Among them, three clamping members 24 are arranged on the side of the rotating disk 22 facing away from the support plate 1, and the three clamping members 24 are distributed circumferentially around the bearing 21, so as to be able to clamp and fix the thin-walled cylinder 5 from multiple positions to ensure the stability of the thin-walled cylinder 5. The driving member 23 is used to drive the bearing 21 to rotate. When the driving member 23 works, it drives the inner ring of the bearing 21 to rotate. Since the rotating disk 22 is connected to the inner ring of the bearing 21, the rotating disk 22 will also rotate accordingly, and then drive the thin-walled cylinder 5 fixed on the clamping member 24 to rotate, so that the thin-walled cylinder 5 can be conveniently adjusted to a suitable position.

[0043] Furthermore, the clamping member 24 includes: a fixed bracket 241. The fixed bracket 241 is connected to the rotating disk 22. A first electric cylinder 242 is arranged on the fixed bracket 241. The end of the moving end of the first electric cylinder 242 is provided with a V-shaped positioning block 243, and the moving end of the first electric cylinder 242 moves along the radial direction of the bearing 21. Through the telescopic movement of the first electric cylinder 242, the V-shaped positioning block 243 can be driven to move along the radial direction, so as to realize the clamping and fixing of thin-walled cylinders 5 with different diameters. The design of the V-shaped positioning block 243 can better adapt to the shape of the thin-walled cylinder 5 and provide a more stable clamping effect.

[0044] Furthermore, the driving member 23 includes a first gear 231 coaxially connected to the inner ring of the bearing 21. A motor fixing plate 232 is provided on the support plate 1. A first motor 233 is arranged on the motor fixing plate 232. The output end of the first motor 233 is connected to a second gear 234, and the second gear 234 meshes with the first gear 231. When the first motor 233 is started, the second gear 234 rotates to drive the first gear 231 to rotate, and then drive the inner ring of the bearing 21, the rotating disk 22 and the thin-walled cylinder 5 on the clamping member 24 to rotate synchronously, so as to realize the rotational adjustment of the thin-walled cylinder 5, thereby adjusting the position of the thin-walled cylinder 5 so that the long axis of the out-of-round thin-walled cylinder 5 can be adjusted to be perpendicular to the opposite two surfaces of the upper pressing plate 31 and the lower pressing plate 32.

[0045] In this embodiment, the adjusting assembly 4 includes a support 41. A universal wheel 45 is provided at the bottom of the support 41. A second motor 42 is provided on the support 41. The output end of the second motor 42 is connected to a lead screw 43. The lead screw 43 has a thread, and a nut 44 is threadedly connected to the lead screw. The nut 44 can move axially along the lead screw 43. A connecting member 11 fixedly connected to the nut 44 is provided on the support plate 1. A chute 411 is axially provided on the support 41 along the lead screw 43, and a slider 12 slidably connected to the chute 411 is provided on the support plate 1. By driving the lead screw 43 to rotate through the second motor 42, the nut 43 and the connecting member 11 can move axially along the lead screw 43, and then the support plate 1 can slide along the chute 411, ensuring that the thin-walled cylinder 5 can be accurately moved to a proper position, creating conditions for subsequent compression correction. Further, the lower pressing plate 32 is fixedly provided on the support 41, and the support 41 provides stable support for the lower pressing plate 32.

[0046] Embodiment Three:

[0047] Based on the same inventive concept as Embodiment Two, referring to Figure 1 and Figure 8 , to make the correction of the out-of-round thin-walled cylinder 5 more accurate, in this embodiment, the three-point positioning type out-of-round thin-walled cylinder correction device further includes: a detection assembly 6. The detection assembly 6 includes a fixed seat 61 fixedly connected to the adjusting assembly 4. A third electric cylinder 62 is provided on the fixed seat 61. The moving end of the third electric cylinder 62 can move axially along the thin-walled cylinder 5 fixed by the positioning assembly 2. A laser distance sensor 63 is provided on the moving end of the third electric cylinder 62. The laser distance sensor 63 is used to measure the distance between it and the inner wall of the thin-walled cylinder 5.

[0048] In this embodiment, the detection assembly 6 is used to obtain the dimensional information of the out-of-round thin-walled cylinder 5, so as to more accurately obtain the distance that the thin-walled cylinder 5 needs to be compressed. During the correction process of the thin-walled cylinder 5, after the positioning assembly 2 fixes the thin-walled cylinder 5, the thin-walled cylinder 5 can be driven to rotate one week by rotating the positioning assembly 2. During the rotation process, the laser distance sensor 63 can perform laser detection on the inner wall of the thin-walled cylinder 5 for one week, so as to obtain the dimensional information of the thin-walled cylinder 5. According to the dimensional information, the major axis dimension of the out-of-round thin-walled cylinder 5 can be obtained. By subtracting the major axis dimension from the dimension of the thin-walled cylinder 5 in the non-out-of-round state, the required compression movement distance of the upper pressing plate 31 can be obtained, making the correction more accurate. By repeating the above operations, it can be ensured that the out-of-round thin-walled cylinder 5 meets the correction requirements.

[0049] Further, in this embodiment, the lower pressing plate 32 defines a V-shaped groove. After the detection assembly 6 obtains the dimensional information of the out-of-round thin-walled cylinder 5, the positions of the three positioning electric cylinders can be adjusted to make the center of the thin-walled cylinder 5 located on the axis of the bearing 21. Then, the thin-walled cylinder 5 is moved into the V-shaped groove of the lower pressing plate 32 through the adjustment group for compression. Thereby, the stability and centering of the thin-walled cylinder 5 during the compression correction process are ensured, and the accuracy and quality of the correction are improved.

[0050] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principles of the present disclosure / the present application, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present disclosure / the present application.

Claims

1. A three-point positioning type out-of-roundness correction device for thin-walled cylinder barrels, characterized in that, Comprising: Support plate (1); Positioning component (2), rotatably arranged on the support plate (1), the positioning component (2) is used to fix the thin-walled cylinder (5), and the thin-walled cylinder (5) can be driven to rotate by rotating the positioning component (2); Compression component (3), including: upper pressure plate (31), lower pressure plate (32) and compression member, the upper pressure plate (31) and the lower pressure plate (32) are arranged oppositely, the thin-walled cylinder (5) fixed by the positioning component (2) is located between the upper pressure plate (31) and the lower pressure plate (32), and the compression member is used to drive the upper pressure plate (31) to move towards the lower pressure plate (32); Adjustment component (4), connected to the support plate (1), used to drive the thin-walled cylinder (5) to move towards or away from the lower pressure plate (32).

2. The three-point positioning type thin-wall cylinder barrel out-of-roundness correction device according to claim 1, wherein, The positioning component (2) includes: bearing (21), the outer ring of the bearing (21) is fixedly penetrated in the support plate (1), a rotating disk (22) and a driving member (23) are respectively arranged on both axial sides of the bearing (21), the rotating disk (22) and the driving member (23) are respectively connected to the inner ring of the bearing (21), a plurality of clamping members (24) are arranged on the side surface of the rotating disk (22) facing away from the support plate (1), and the plurality of clamping members (24) are distributed around the circumference of the bearing (21), and the driving member (23) is used to drive the bearing (21) to rotate.

3. The three-point positioning type thin-walled cylinder barrel ovality correction device according to claim 2, wherein, The clamping member (24) includes: fixed bracket (241), the fixed bracket (241) is connected to the rotating disk (22), a first electric cylinder (242) is arranged on the fixed bracket (241), a V-shaped positioning block (243) is arranged at the end of the moving end of the first electric cylinder (242), and the moving end of the first electric cylinder (242) moves along the radial direction of the bearing (21).

4. The three-point positioning type thin-wall cylinder barrel ovality correction device according to claim 3, characterized in that, The driving member (23) includes a first gear (231) coaxially connected to the inner ring of the bearing (21), a motor fixing plate (232) is arranged on the support plate (1), a first motor (233) is arranged on the motor fixing plate (232), the output end of the first motor (233) is connected with a second gear (234), and the second gear (234) meshes with the first gear (231).

5. The three-point positioning type thin-walled cylinder barrel ovality correction device according to claim 4, characterized in that, There are three clamping members (24).

6. The three-point positioning type thin-wall cylinder barrel ovality correction device according to claim 1, characterized in that The compression member includes a second electric cylinder (33), a support column (34) is arranged on the lower pressure plate (32), a top plate (35) is fixedly connected to the support column (34), the second electric cylinder (33) is arranged on the top surface of the top plate (35), and the moving end of the second electric cylinder (33) passes through the top plate (35) and is connected to the upper pressure plate (31).

7. The three-point positioning type thin-wall cylinder barrel ovality correction device according to claim 1, characterized in that, The adjusting assembly (4) includes a support (41), on which a second motor (42) is arranged. The output end of the second motor (42) is connected to a lead screw (43), and a nut (44) is threadedly connected to the lead screw (43). A connecting member (11) fixedly connected to the nut (44) is arranged on the support plate (1); a sliding groove (411) is arranged on the support (41) along the axial direction of the lead screw (43), and a sliding block (12) slidably connected to the sliding groove (411) is arranged on the support plate (1).

8. The three-point positioning type thin-wall cylinder barrel ovality correction device according to claim 7, characterized in that, The lower pressing plate (32) is fixedly arranged on the support (41), and universal wheels (45) are arranged at the bottom of the support (41).

9. The three-point positioning type thin-wall cylinder barrel ovality correction device according to claim 1, characterized in that, It further includes a detection assembly (6). The detection assembly (6) includes a fixed seat (61) fixedly connected to the adjusting assembly (4). A third electric cylinder (62) is arranged on the fixed seat (61). The moving end of the third electric cylinder (62) can move along the axial direction of the thin-walled cylinder (5) fixed by the positioning assembly (2). A laser distance sensor (63) is arranged on the moving end of the third electric cylinder (62), and the laser distance sensor (63) is used to measure the distance between it and the inner wall of the thin-walled cylinder (5).

10. The three-point positioning type thin-walled cylinder barrel out-of-roundness correction device according to claim 9, characterized in that, The lower pressing plate (32) defines a V-shaped groove.

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