Clamping tool for annular part machining and machining method

Abstract

The invention discloses a clamping tool for annular part machining and a machining method, and relates to the technical field of annular part machining. The clamping tool is technically characterized by comprising a base, an inner diameter clamping mechanism is arranged in the middle of one face of the base, and the inner diameter clamping mechanism comprises a first fixing ring fixedly arranged on the base; first telescopic assemblies are annularly and evenly arranged on the first fixing ring, the movable parts of the first telescopic assemblies are away from the center and fixedly connected with first clamping arc plates, lifting assemblies are arranged on the two sides of the base, electric rotary tables are fixedly arranged on the movable parts of the lifting assemblies, and a second fixing ring is arranged between the two electric rotary tables. The outer wall of the second fixing ring is fixedly connected with the movable part of the electric rotary table, a second telescopic assembly is annularly arranged on the second fixing ring, and the movable part of the second telescopic assembly faces the center and is fixedly connected with a second clamping arc plate. The double-sided processing can be conveniently carried out, and the convenience is improved.

Description

Technical Field

[0001] This invention relates to the field of ring-shaped part machining technology, and in particular to a clamping fixture and machining method for ring-shaped parts. Background Technology

[0002] With the continuous development and progress of economy and technology, the machinery manufacturing field has achieved remarkable success. In this booming process, machinery manufacturing fixtures, as indispensable auxiliary equipment in machining, play a crucial role. With their unique functions, they can effectively fix and position workpieces, providing a stable operating environment for machining, thereby ensuring high machining accuracy and greatly improving production efficiency. They have become an indispensable tool in modern machinery manufacturing, powerfully driving the development of the machinery manufacturing industry.

[0003] In the vast field of mechanical manufacturing, there are numerous parts of various shapes, among which ring-shaped parts are particularly common. Due to their unique shapes and complex structures, these ring-shaped parts require multiple delicate processes during processing, including welding, drilling, grinding, and cutting. Each process places strict requirements on the quality of the parts, and to ensure these processes can be carried out smoothly and accurately, specialized tooling fixtures must be used to firmly clamp and fix the ring-shaped parts. Only in this way can displacement or deformation of the ring-shaped parts be effectively prevented during processing due to external forces, thereby ensuring that processing quality and production efficiency are not affected.

[0004] Currently, various clamping fixtures designed for ring-shaped parts have emerged in the market, such as the fixture for ring-shaped parts disclosed in CN202320736150.3, and the fixture for fixing ring-shaped parts described in CN202220928066.7. These existing fixtures meet the basic requirements for machining ring-shaped parts to a certain extent, providing convenience for machining. However, when dealing with certain ring-shaped parts that require double-sided machining, these existing fixtures reveal significant shortcomings. Double-sided machining typically requires removing the part from the current fixture and re-clamping it to the other side for machining. This cumbersome process not only consumes a lot of time and effort, but also easily introduces errors during repeated clamping, thus adversely affecting machining accuracy and overall production efficiency. Summary of the Invention

[0005] In order to at least solve one of the above-mentioned technical problems, the present invention aims to provide a clamping fixture and processing method for machining ring-shaped parts, which facilitates double-sided machining and improves convenience.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A clamping fixture for machining ring-shaped parts includes a base. An inner diameter clamping mechanism is provided in the middle of one side of the base. The inner diameter clamping mechanism includes a first fixed ring fixedly mounted on the base. A first telescopic component is uniformly arranged in a ring on the first fixed ring. The movable part of the first telescopic component is away from the center and fixedly connected to a first clamping arc plate. Lifting components are provided on both sides of the base. An electric turntable is fixedly mounted on the movable part of the lifting component. A second fixed ring is provided between the two electric turntables. The outer wall of the second fixed ring is fixedly connected to the movable part of the electric turntable. A second telescopic component is arranged in a ring on the second fixed ring. The movable part of the second telescopic component faces the center and is fixedly connected to a second clamping arc plate.

[0008] Preferably, the first telescopic component, the second telescopic component, and the lifting component are all electric cylinders driven by servo motors, and the electric turntable is driven by a servo motor.

[0009] Preferably, the working surfaces of the first clamping arc plate and the second clamping arc plate are coated with a wear-resistant coating.

[0010] Preferably, a first pressure sensor is provided between the first clamping arc plate and the first telescopic component, and a second pressure sensor is provided between the second clamping arc plate and the second telescopic component. Connecting blocks are fixedly connected to both sides of the base, and the connecting blocks are fixedly connected to the lifting component through tension sensors. The clamping fixture also includes a control unit. The first pressure sensor transmits the monitored pressure signal to the control unit, and the control unit controls the extension and retraction of the first telescopic component according to a preset first pressure value range. The second pressure sensor transmits the monitored pressure signal to the control unit, and the control unit controls the extension and retraction of the second telescopic component according to a preset second pressure value range. The tension sensor transmits the monitored tension signal to the control unit, and the control unit controls the extension and retraction of the lifting component according to a preset tension value range.

[0011] Preferably, a rotating ring is rotatably connected to the outer edge of the base, and the rotating ring is fixedly connected to the connecting block. The two sides of the inner wall of the rotating ring are rotatably connected to the outer edge of the base through ring bearings. An internal gear ring is provided in the middle of the inner wall of the rotating ring. Movable cavities are opened on both sides of the base. A drive gear is rotatably connected in the movable cavity. The drive gear meshes with the internal gear ring. A drive motor is embedded in the base. The output shaft of the drive motor is fixedly connected to the drive gear in the movable cavity. The drive motor is a servo motor.

[0012] Preferably, a permanent magnet ring is embedded on the side of the base facing the inner diameter clamping mechanism. The inner diameter of the permanent magnet ring is larger than the outer diameter of the first fixed ring, and the outer diameter of the permanent magnet ring is smaller than the inner diameter of the second fixed ring. The outer surface of the permanent magnet ring is coated with a wear-resistant coating.

[0013] Preferably, the base is connected to a mounting seat via a universal joint on the side away from the inner diameter clamping mechanism.

[0014] A method for machining a ring-shaped part includes the following steps:

[0015] Step 1: Initial clamping and positioning. Place the annular part on the base and control the first telescopic component to extend so that the first clamping arc plate is tightly attached to the inner wall of the annular part; at the same time, control the second telescopic component to retract so that the second clamping arc plate is away from the outer wall of the annular part.

[0016] Step 2: Machining operation. After the ring part is initially positioned, the required machining operation is performed on the ring part. During the machining process, the first pressure sensor monitors the pressure between the first clamping arc plate and the inner wall of the ring part in real time and transmits the pressure signal to the control unit. The control unit controls the extension and retraction of the first telescopic component according to the preset first pressure value range.

[0017] Step 3: Flipping Preparation. When the annular part needs to be flipped, the first telescopic component is controlled to retract, causing the first clamping arc plate to disengage from the inner wall of the annular part; simultaneously, the second telescopic component is controlled to extend, causing the second clamping arc plate to press tightly against the outer wall of the annular part; the second pressure sensor monitors the pressure between the second clamping arc plate and the outer wall of the annular part in real time and transmits the pressure signal to the control unit, which controls the extension and retraction of the second telescopic component according to the preset second pressure value range;

[0018] Step 4: Flipping operation. Control the extension of the lifting assembly. The tension sensor monitors the tension between the lifting assembly and the connecting block in real time and transmits the tension signal to the control unit. The control unit controls the extension speed and force of the lifting assembly according to the preset tension value range, so that the ring part can be smoothly detached from the base. Control the electric turntable to flip the second fixed ring and the ring part held by the second clamping arc plate. After flipping, control the retraction of the lifting assembly. Again, control the retraction speed and force of the lifting assembly according to the tension value range, so that the ring part can be smoothly lowered and pressed tightly against the base.

[0019] Step 5: Re-clamp and position, control the first telescopic component to extend again, so that the first clamping arc plate re-fits the inner wall of the annular part, and adjust the clamping force of the first clamping arc plate again according to the first pressure value range to complete the re-clamping and positioning after the annular part is flipped.

[0020] Step Six: Continue processing. Continue the required processing operations on the flipped ring-shaped part. During the processing, the first pressure sensor and the second pressure sensor continue to work.

[0021] Step 7: Processing and disassembly. After the annular part is processed, control the first telescopic component to retract, so that the first clamping arc plate is disengaged from the inner wall of the annular part; at the same time, control the second telescopic component to retract, so that the second clamping arc plate is disengaged from the outer wall of the annular part; then control the lifting component to extend, and remove the processed annular part from the clamping fixture.

[0022] The present invention has the following beneficial effects:

[0023] I. Facilitates Double-Sided Machining and Improves Convenience: Existing clamping fixtures require disassembling and re-clamping ring-shaped parts for double-sided machining, a cumbersome process prone to errors. The clamping fixture and machining method provided by this invention utilizes an inner diameter clamping mechanism, an outer diameter clamping structure on a second fixed ring, and an electric turntable. During machining, when flipping is required, the first telescopic component retracts to disengage the first clamping arc plate from the inner wall of the ring-shaped part, while the second telescopic component extends to press the second clamping arc plate against the outer wall of the ring-shaped part. Then, a lifting component smoothly detaches the ring-shaped part from the base, and the electric turntable flips the second fixed ring and the clamped ring-shaped part. After flipping, the lifting component smoothly lowers the ring-shaped part to press it against the base, and finally, the first telescopic component extends again to press the first clamping arc plate against the inner wall of the ring-shaped part, completing the re-clamping and positioning. The entire process eliminates the need for disassembly and re-clamping, greatly facilitating double-sided machining and improving machining convenience.

[0024] II. Precise Control of Clamping Force to Ensure Processing Quality: This invention incorporates a first pressure sensor between the first clamping arc plate and the first telescopic assembly, and a second pressure sensor between the second clamping arc plate and the second telescopic assembly. The base is fixedly connected to the lifting assembly on both sides via tension sensors and is equipped with a control unit. During processing, the first pressure sensor monitors the pressure between the first clamping arc plate and the inner wall of the annular part in real time and transmits the signal to the control unit. The control unit controls the extension and retraction of the first telescopic assembly according to a preset first pressure value range. The second pressure sensor monitors the pressure between the second clamping arc plate and the outer wall of the annular part in real time, and the control unit controls the extension and retraction of the second telescopic assembly according to a preset second pressure value range. The tension sensor monitors the tension between the lifting assembly and the connecting block in real time, and the control unit controls the extension and retraction speed and force of the lifting assembly according to a preset tension value range. This precise pressure and tension control ensures that the annular part remains in a suitable clamping state throughout the processing, effectively preventing damage due to excessive clamping force or displacement and deformation due to insufficient clamping force, thus guaranteeing processing quality.

[0025] III. Stable Structure and Improved Production Efficiency: The base of this clamping fixture features an inner diameter clamping mechanism in the center and lifting components on both sides. The movable part of the lifting components is fixed to an electric turntable, and a second fixing ring is positioned between the two electric turntables, resulting in a rational overall structural layout. During processing, all components work collaboratively, enabling rapid and stable completion of clamping, processing, and flipping operations on ring-shaped parts. Compared to the cumbersome disassembly and re-clamping process required for double-sided processing in existing clamping fixtures, this invention reduces operation time and steps, lowers the risk of errors introduced by repeated clamping, and makes the processing smoother, thereby improving overall production efficiency.

[0026] IV. Wear-resistant and Rotational Combination: The working surfaces of the first and second clamping arc plates are coated with a wear-resistant coating. A rotating ring is rotatably connected to the outer edge of the base. The inner walls of the rotating ring are rotatably connected to the outer edge of the base via ring bearings. An internal gear ring is located in the center of the inner wall of the rotating ring. Drive gears meshing with the internal gear ring are rotatably connected to the movable cavities on both sides of the base. A drive motor embedded in the base drives the drive gears to rotate. The wear-resistant coating reduces wear when the clamping arc plates contact the ring-shaped parts, extending the service life of the clamping arc plates. The rotating ring and related rotational structures make adjustments to the angle of the ring-shaped parts more flexible. This combination ensures both the durability of the clamping fixture and enhances its operational flexibility.

[0027] V. Permanent Magnet Ring and Overall Clamping Assembly: A permanent magnet ring is embedded on the side of the base facing the inner diameter clamping mechanism. The inner diameter of the permanent magnet ring is larger than the outer diameter of the first fixed ring, and the outer diameter is smaller than the inner diameter of the second fixed ring. The outer surface of the permanent magnet ring is coated with a wear-resistant coating. The permanent magnet ring can, to a certain extent, attract the ring-shaped part, assisting in clamping and positioning. Working together with the inner diameter clamping mechanism and the outer diameter clamping structure, it further enhances the clamping stability of the ring-shaped part. Especially in machining scenarios where high clamping stability is required, this combination can better meet machining needs.

[0028] VI. Universal Joint Connection and Installation Assembly: The base, away from the inner diameter clamping mechanism, is connected to a mounting seat via a universal joint. The universal joint connection allows the clamping fixture to be flexibly adjusted at different angles according to the actual installation environment, adapting to various installation positions and space requirements. Combined with the overall clamping fixture structure, this improves the applicability and ease of installation of the clamping fixture. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional structural schematic diagram of the first embodiment of the present invention.

[0031] Figure 2 This is a top view of the first embodiment of the present invention.

[0032] Figure 3 This is a cross-sectional view of the base according to the second embodiment of the present invention.

[0033] Figure 4 This is a top view of the second embodiment of the present invention.

[0034] In the diagram: 1. Base; 201. First fixing ring; 202. First telescopic assembly; 203. First clamping arc plate; 301. Lifting assembly; 302. Electric turntable; 303. Connecting block; 401. Second fixing ring; 402. Second telescopic assembly; 403. Second clamping arc plate; 501. First pressure sensor; 502. Second pressure sensor; 503. Tension sensor; 601. Rotating ring; 602. Ring bearing; 603. Internal gear ring; 604. Drive gear; 605. Drive motor; 7. Permanent magnet ring; 801. Universal joint; 802. Mounting base. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] First embodiment

[0037] like Figures 1 to 2 As shown, a clamping fixture for machining ring-shaped parts includes a base 1. An inner diameter clamping mechanism is provided in the middle of one side of the base 1. The inner diameter clamping mechanism includes a first fixing ring 201 fixedly mounted on the base 1. A first telescopic component 202 is uniformly arranged in a ring on the first fixing ring 201. The movable part of the first telescopic component 202 is away from the center and fixedly connected to a first clamping arc plate 203. Lifting components 301 are provided on both sides of the base 1. An electric turntable 302 is fixedly mounted on the movable part of the lifting component 301. A second fixing ring 401 is provided between the two electric turntables 302. The outer wall of the second fixing ring 401 is fixedly connected to the movable part of the electric turntable 302. A second telescopic component 402 is arranged in a ring on the second fixing ring 401. The movable part of the second telescopic component 402 faces the center and is fixedly connected to a second clamping arc plate 403.

[0038] A method for machining a ring-shaped part, utilizing the above-mentioned clamping fixture, includes the following steps:

[0039] Initial positioning steps: In the initial positioning stage of clamping, the annular part is placed on the base 1. The first telescopic component 202 of the inner diameter clamping mechanism extends, pushing the first clamping arc plate 203 tightly against the inner wall of the annular part, and the initial positioning is achieved by utilizing the friction between the first clamping arc plate 203 and the inner wall of the annular part. At this time, the second telescopic component 402 retracts, moving the second clamping arc plate 403 away from the outer wall of the annular part to avoid interfering with the initial positioning.

[0040] Processing pressure control steps: During the processing operation, the first pressure sensor 501 monitors the pressure between the first clamping arc plate 203 and the inner wall of the annular part in real time and transmits the pressure signal to the control unit. Based on a preset first pressure value range, the control unit dynamically adjusts the clamping force of the first clamping arc plate 203 on the inner wall of the annular part by controlling the extension and retraction of the first telescopic component 202. When the pressure is lower than the lower limit of the first pressure value range, the control unit controls the first telescopic component 202 to extend, increasing the clamping force; when the pressure is higher than the upper limit of the first pressure value range, the control unit controls the first telescopic component 202 to retract, reducing the clamping force, thereby ensuring the stability of the annular part during processing and preventing deformation or loosening of the part due to excessive or insufficient clamping force.

[0041] Flipping Preparation Steps: When the annular part needs to be flipped, the first telescopic component 202 is retracted, causing the first clamping arc plate 203 to disengage from the inner wall of the annular part. Simultaneously, the second telescopic component 402 extends, pushing the second clamping arc plate 403 tightly against the outer wall of the annular part. The friction between the second clamping arc plate 403 and the outer wall of the annular part is used to clamp the annular part. The second pressure sensor 502 monitors the pressure between the second clamping arc plate 403 and the outer wall of the annular part in real time and transmits the pressure signal to the control unit. The control unit controls the extension and retraction of the second telescopic component 402 according to a preset second pressure value range, ensuring that the clamping force of the second clamping arc plate 403 on the outer wall of the annular part remains stable within a suitable range, providing stable support for subsequent flipping operations.

[0042] Flipping Operation Steps: During the flipping operation, the lifting assembly 301 is extended, and the tension sensor 503 monitors the tension between the lifting assembly 301 and the connecting block 303 in real time, transmitting the tension signal to the control unit. The control unit controls the extension speed and force of the lifting assembly 301 according to a preset tension value range, smoothly disengaging the annular part from the base 1, preventing the annular part from shaking or falling due to excessive or insufficient tension. Then, the electric turntable 302 is controlled to flip the second fixed ring 401 and the annular part clamped by the second clamping arc plate 403. After flipping, the lifting assembly 301 is retracted, and the retraction speed and force are again controlled according to the tension value range, smoothly lowering the annular part to fit snugly against the base 1, ensuring the stability and accuracy of the annular part during the flipping process.

[0043] Re-clamping and positioning step: After flipping, the first telescopic component 202 is re-extended, causing the first clamping arc plate 203 to re-fit against the inner wall of the annular part. The first pressure sensor 501 monitors the pressure between the first clamping arc plate 203 and the inner wall of the annular part in real time. The control unit adjusts the clamping force of the first clamping arc plate 203 according to the first pressure value range, completing the re-clamping and positioning of the annular part after flipping, providing a stable clamping state for subsequent processing operations.

[0044] Continued processing and disassembly steps: During the continued processing stage, the first pressure sensor 501 and the second pressure sensor 502 continuously operate, monitoring the pressure between the clamping arc plate and the annular part in real time to ensure the stability of the annular part during processing. Once the annular part is processed, the first telescopic assembly 202 is retracted, causing the first clamping arc plate 203 to detach from the inner wall of the annular part; simultaneously, the second telescopic assembly 402 is retracted, causing the second clamping arc plate 403 to detach from the outer wall of the annular part. Then, the lifting assembly 301 is extended to remove the processed annular part from the clamping fixture, completing the entire processing flow.

[0045] like Figures 1 to 2As shown, the first telescopic component 202, the second telescopic component 402, and the lifting component 301 are all electric cylinders driven by servo motors, and the electric turntable 302 is also driven by a servo motor. The working surfaces of the first clamping arc plate 203 and the second clamping arc plate 403 are coated with a wear-resistant coating. During initial clamping, the electric cylinder driven by the servo motor extends as the first telescopic component 202, pushing the first clamping arc plate 203 closer to and tightly fitting against the inner wall of the annular part. The wear-resistant coating on the working surface of the first clamping arc plate 203 not only enhances the friction with the inner wall of the part, preventing the part from slipping during processing, but also reduces wear on the inner wall of the part during clamping. At this time, the first pressure sensor 501 monitors the pressure between the first clamping arc plate 203 and the inner wall of the part in real time and transmits the signal to the control unit. The control unit precisely controls the extension and retraction of the first telescopic component 202 according to the preset first pressure value range, ensuring that the clamping force is stable within a suitable range, and achieving reliable positioning of the inner wall of the annular part. At the same time, the second telescopic component 402 retracts, moving the second clamping arc plate 403 away from the outer wall of the part to avoid interfering with the initial positioning.

[0046] like Figures 1 to 2 As shown, a first pressure sensor 501 is provided between the first clamping arc plate 203 and the first telescopic component 202, and a second pressure sensor 502 is provided between the second clamping arc plate 403 and the second telescopic component 402. Connecting blocks 303 are fixedly connected to both sides of the base 1, and the connecting blocks 303 are fixedly connected to the lifting component 301 through the tension sensor 503. The clamping fixture also includes a control unit. The first pressure sensor 501 transmits the monitored pressure signal to the control unit, and the control unit controls the extension and retraction of the first telescopic component 202 according to a preset first pressure value range. The second pressure sensor 502 transmits the monitored pressure signal to the control unit, and the control unit controls the extension and retraction of the second telescopic component 402 according to a preset second pressure value range. The tension sensor 503 transmits the monitored tension signal to the control unit, and the control unit controls the extension and retraction of the lifting component 301 according to a preset tension value range.

[0047] During the part machining stage, the first pressure sensor 501 continuously operates, constantly feeding back pressure signals to the control unit. If the pressure between the first clamping arc plate 203 and the inner wall of the part changes due to factors such as cutting force during machining, when the pressure is lower than the lower limit of the first pressure value range, the control unit immediately controls the first telescopic component 202 to extend, increasing the clamping force; when the pressure is higher than the upper limit, it controls the first telescopic component 202 to retract, reducing the clamping force. This dynamic control mechanism ensures the stability of the part during machining and effectively prevents part deformation or decreased machining accuracy caused by improper clamping force.

[0048] When a part needs to be flipped, the first telescopic component 202 retracts, causing the first clamping arc plate 203 to detach from the inner wall of the part. Simultaneously, the second telescopic component 402 extends, pushing the second clamping arc plate 403 closer to and tightly fitting against the outer wall of the part. The wear-resistant coating on the working surface of the second clamping arc plate 403 also enhances friction and reduces wear. The second pressure sensor 502 monitors the pressure between the second clamping arc plate 403 and the outer wall of the part in real time and transmits the signal to the control unit. Based on a preset second pressure value range, the control unit precisely controls the extension and retraction of the second telescopic component 402 to ensure a stable and reliable clamping force of the second clamping arc plate 403 against the outer wall of the part, providing solid support for subsequent flipping operations.

[0049] During the flipping stage, the connecting block 303 is fixedly connected to the lifting assembly 301, which is driven by a servo motor and an electric cylinder, via a tension sensor 503. The control unit controls the extension of the lifting assembly 301, and the tension sensor 503 monitors the tension between the lifting assembly 301 and the connecting block 303 in real time and feeds the signal back to the control unit. Based on a preset tension value range, the control unit precisely controls the extension speed and force of the lifting assembly 301, so that the annular part can smoothly detach from the base 1, avoiding the part from shaking or falling due to sudden changes in tension. Subsequently, the electric turntable 302, driven by a servo motor, drives the second fixed ring 401 and the annular part clamped by the second clamping arc plate 403 to flip. After the flipping is completed, the control unit again controls the lifting assembly 301 to retract based on the tension value range, so that the annular part can smoothly descend and fit tightly against the base 1, ensuring the smoothness and accuracy of the flipping process.

[0050] After the flipping is completed, the first telescopic component 202 extends again, causing the first clamping arc plate 203 to re-fit against the inner wall of the annular part. The first pressure sensor 501 monitors the pressure in real time again, and the control unit adjusts the clamping force of the first clamping arc plate 203 according to the first pressure value range, completing the re-clamping and positioning of the part after flipping, providing stable conditions for subsequent processing.

[0051] Second embodiment

[0052] like Figures 3 to 4 As shown, a rotating ring 601 is rotatably connected to the outer edge of the base 1. The rotating ring 601 is fixedly connected to the connecting block 303. The inner walls of the rotating ring 601 are rotatably connected to the outer edge of the base 1 through ring bearings 602. An internal gear ring 603 is provided in the middle of the inner wall of the rotating ring 601. Movable cavities are opened on both sides of the base 1. A drive gear 604 is rotatably connected in the movable cavity. The drive gear 604 meshes with the internal gear ring 603. A drive motor 605 is embedded in the base 1. The output shaft of the drive motor 605 is fixedly connected to the drive gear 604 in the movable cavity. The drive motor 605 is a servo motor.

[0053] After the servo drive motor 605 embedded in the base 1 is started, its output shaft drives the drive gear 604 in the movable cavity to rotate. Since the drive gear 604 meshes with the internal gear ring 603 in the middle of the inner wall of the rotating ring 601, according to the gear transmission principle, the rotational motion of the drive gear 604 is transmitted to the internal gear ring 603, thereby driving the entire rotating ring 601 to rotate around the outer edge of the base 1. The two sides of the inner wall of the rotating ring 601 are rotatably connected to the outer edge of the base 1 through the ring bearings 602. The ring bearings 602 play a role in supporting the rotating ring 601 and reducing rotational friction, ensuring that the rotating ring 601 can rotate smoothly around the base 1, providing a power basis for the rotation of subsequent components connected to the rotating ring 601 (such as the connecting block 303), so that the entire device can flexibly adjust the angle according to processing requirements.

[0054] like Figures 3 to 4 As shown, a permanent magnet ring 7 is embedded in the side of the base 1 facing the inner diameter clamping mechanism, generating a magnetic field using its own magnetism. When the annular part approaches the base 1, it is attracted and adheres to the permanent magnet ring 7 under the influence of the magnetic field. The inner diameter of the permanent magnet ring 7 is larger than the outer diameter of the first fixing ring 201, and the outer diameter is smaller than the inner diameter of the second fixing ring 401. This size design allows the permanent magnet ring 7 to accurately perform preliminary positioning of the annular part, ensuring that the part is in the appropriate processing position. At the same time, the wear-resistant coating on the outer surface of the permanent magnet ring 7 reduces friction and wear between the annular part and the permanent magnet ring 7 during the adsorption and adhesion process, extending the service life of the permanent magnet ring 7 and ensuring the stability and reliability of the adsorption and positioning.

[0055] like Figures 3 to 4 As shown, the side of the base 1 away from the inner diameter clamping mechanism is connected to the mounting base 802 via a universal joint 801, which has multi-degree-of-freedom rotational characteristics. This allows the mounting base 802 to rotate flexibly in multiple directions and adjust its angle, enabling the entire device to be easily installed on various work platforms according to different processing environments and equipment installation requirements. Furthermore, the tilt angle and orientation of the device can be adjusted according to actual needs, improving the versatility and adaptability of the device.

[0056] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A clamping tool for machining of a ring-shaped part, characterized in that The utility model provides a clamping tool, including base (1), the inside diameter clamping mechanism is arranged in the middle of one side of base (1), the inside diameter clamping mechanism includes the first fixed ring (201) fixedly arranged on base (1), the first fixed ring (201) is uniformly provided with first telescopic assembly (202) on annularly, the movable part of first telescopic assembly (202) is away from the center and is fixedly connected with first clamping arc plate (203), the both sides of base (1) are provided with lifting assembly (301), the movable part of lifting assembly (301) is fixedly provided with motorized turntable (302), and the movable part of the motorized turntable (302) is fixedly connected with the outer wall of second fixed ring (401) between two motorized turntables (302), and second fixed ring (401) is provided with second telescopic assembly (402) on annularly, and the movable part of second telescopic assembly (402) is towards the center and is fixedly connected with second clamping arc plate (403).

2. The clamping tool of claim 1, wherein The first telescopic assembly (202), second telescopic assembly (402) and lifting assembly (301) are all electric cylinders driven by servo motors, and the motorized turntable (302) is driven by a servo motor.

3. The clamping fixture of claim 2, wherein The working surfaces of the first clamping arc plate (203) and the second clamping arc plate (403) are coated with a wear-resistant coating.

4. The clamping tool of claim 3, wherein A first pressure sensor (501) is arranged between the first clamping arc plate (203) and the first telescopic assembly (202), a second pressure sensor (502) is arranged between the second clamping arc plate (403) and the second telescopic assembly (402), and connecting blocks (303) are fixedly connected to the two sides of the base (1). The connecting blocks (303) are fixedly connected to the lifting assemblies (301) through tension sensors (503). The clamping tool further comprises a control unit. The first pressure sensor (501) transmits the monitored pressure signal to the control unit, and the control unit controls the extension and retraction of the first telescopic assembly (202) according to a preset first pressure value range. The second pressure sensor (502) transmits the monitored pressure signal to the control unit, and the control unit controls the extension and retraction of the second telescopic assembly (402) according to a preset second pressure value range. The tension sensor (503) transmits the monitored tension signal to the control unit, and the control unit controls the extension and retraction of the lifting assembly (301) according to a preset tension value range.

5. The clamping tool of claim 4, wherein The base (1) is rotationally connected with a rotating ring (601) at the outer edge, the rotating ring (601) is fixedly connected with the connecting block (303), the rotating ring (601) is rotationally connected with the base (1) at the outer edge through the annular bearing (602) at the inner wall of both sides, the inner wall of the rotating ring (601) is provided with an inner tooth ring (603) at the middle, the base (1) is provided with a movable cavity at both sides, the movable cavity is rotationally connected with a drive gear (604), the drive gear (604) is engaged with the inner tooth ring (603), the base (1) is embedded with a drive motor (605), the output shaft of the drive motor (605) is fixedly connected with the drive gear (604) in the movable cavity, and the drive motor (605) is a servo motor.

6. The clamping tool of claim 5, wherein The base (1) is embedded with a permanent magnet ring (7) on one side of the inner diameter clamping mechanism, the inner diameter of the permanent magnet ring (7) is greater than the outer diameter of the first fixed ring (201), the outer diameter of the permanent magnet ring (7) is smaller than the inner diameter of the second fixed ring (401), and the outer surface of the permanent magnet ring (7) is coated with a wear-resistant coating.

7. The clamping fixture of claim 6, wherein The base (1) is connected with a mounting seat (802) through a universal joint (801) away from the inner diameter clamping mechanism.

8. A method of machining a ring-shaped part using the clamping tool according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: Step one: clamping initial positioning, placing the annular part on the base (1), controlling the first telescopic assembly (202) to expand, so that the first clamping arc plate (203) is tightly attached to the inner wall of the annular part; at the same time, the second telescopic assembly (402) is controlled to shrink, so that the second clamping arc plate (403) is away from the outer wall of the annular part; Step two: processing operation, after the initial positioning of the annular part is completed, the required processing operation is performed on the annular part, and in the processing process, the first pressure sensor (501) monitors the pressure between the first clamping arc plate (203) and the inner wall of the annular part in real time, and transmits the pressure signal to the control unit; the control unit controls the extension and retraction of the first telescopic assembly (202) according to the preset first pressure value range; Step three: preparation for turning over, when it is necessary to turn over the annular part for processing, the first telescopic assembly (202) is controlled to shrink, so that the first clamping arc plate (203) is separated from the inner wall of the annular part; at the same time, the second telescopic assembly (402) is controlled to expand, so that the second clamping arc plate (403) is tightly attached to the outer wall of the annular part; the second pressure sensor (502) monitors the pressure between the second clamping arc plate (403) and the outer wall of the annular part in real time, and transmits the pressure signal to the control unit; the control unit controls the extension and retraction of the second telescopic assembly (402) according to the preset second pressure value range; Step four: Turnover operation, control the lifting assembly (301) to stretch, the tension sensor (503) real-time monitoring the tension between lifting assembly (301) and connecting block (303), and the tension signal is transmitted to the control unit, the control unit according to the preset tension value range control the stretching speed and strength of lifting assembly (301), drive the annular part to smoothly separate from the base (1); Control the electric rotating table (302) to drive the second fixed ring (401) and the annular part clamped by the second clamping arc plate (403) to turn over; After the turnover is completed, control the lifting assembly (301) to shrink, and the contraction speed and strength of the lifting assembly (301) are controlled again according to the tension value range, drive the annular part to stably descend and adhere to the base (1); Step five: Clamping and positioning again, control the first telescopic assembly (202) to stretch again, so that the first clamping arc plate (203) re-adheres to the inner wall of the annular part, and the clamping force of the first clamping arc plate (203) is adjusted again according to the first pressure value range, to complete the clamping and positioning of the annular part after turnover again; Step six: Continue to process, continue to process the annular part after turnover, and the first pressure sensor (501) and the second pressure sensor (502) continue to work during the processing; Step seven: Processing is completed and disassembled, when the annular part is processed, control the first telescopic assembly (202) to shrink, so that the first clamping arc plate (203) is separated from the inner wall of the annular part; At the same time, control the second telescopic assembly (402) to shrink, so that the second clamping arc plate (403) is separated from the outer wall of the annular part; Then control the lifting assembly (301) to stretch, and take down the processed annular part from the clamping tool.

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