A flexible fixture for thin-walled curved pipes whose axis is a spatial curve

Abstract

The present invention discloses a flexible clamp for thin-walled curved pipes whose axis is a spatial curve, comprising a clamp body, the clamp body comprising a fastening assembly for clamping the curved pipe, the fastening assembly comprising a fastening body, a flexible fastening member detachably connected to the fastening body, a rotating mechanism for driving the fastening body to rotate, and a fixing mechanism for fixing the curved pipe wrapped by the fastening body and the flexible fastening member, wherein the fixing mechanism is installed on the fastening body. A method of using a chain to compress the curved pipe is adopted to increase the contact surface with the curved pipe surface, reduce damage to the curved pipe surface, and facilitate fixing of curved pipes of different diameters, wherein the fastening chain can be disassembled. The centering mechanism is equipped with a driving motor, and by controlling the motor, the supporting part on the centering mechanism can be gradually expanded to the required diameter size to achieve contact with the inner wall of the curved pipe, thereby fixing the two ends of the curved pipe and reducing shaking of the two ends of the curved pipe.

Description

Technical Field

[0001] The invention relates to the technical field of clamps, and in particular to a flexible clamp used for a thin-walled curved pipe whose axis is a spatial curve. Background Art

[0002] In the fields of transportation such as ships, automobiles, airplanes, and petroleum, natural gas, and chemical equipment, various elbows with spatial curves are used. They can be used for fuel transportation and gas transportation. In the modern machinery industry, elbows are tightened during the processes of cutting holes, welding, and flange installation. In particular, the clamping and tightening of elbows with spatial curves and thin walls has always been a technical problem. Traditional elbow clamps can only clamp one type of elbow. The more types of elbows there are, the more types of clamps there are. Patent application No. 201210084935.3 discloses a "Bending pipe clamp with an axis being a spatial curve". The patent uses a groove-shaped clamp body as a support, and multiple screws are installed on the clamp body, and V-shaped clamps are installed on the screws. The horizontal position of the screws can be adjusted by adjusting screws on the clamp body. First, put the bent pipe into the groove-shaped clamp body, and adjust the horizontal position of the screws according to the position structure of different sections of the bent pipe. Then rotate the screws to ensure the upper and lower positions of the V-shaped clamps on each group of screws, and finally lock the position of the screws by the principle of double nut top locking, so as to achieve the fixation of the bent pipe. However, this clamp structure is time-consuming and laborious to manually adjust the screws, and the V-shaped clamp has too little contact surface with the surface of the bent pipe, which is not conducive to the fixation of thin-walled pipes. At the same time, when the bent pipe is placed in the groove-shaped clamp body, too much space is blocked, which is not conducive to subsequent processing. At present, the commonly used U-shaped and V-shaped clamping and fastening structures have limited pressing surfaces and less contact surfaces with the bent pipes. In order to ensure firm clamping and increase the clamping force, greater damage will be caused to the surface of the bent pipes with thinner walls. The existing bending pipe clamps are generally traditional clamps with poor adaptability and prominent singleness. Summary of the invention

[0003] The purpose of the present invention is to provide a flexible clamp for thin-walled bent pipes whose axes are spatial curves. The technical problem to be solved is that most traditional bent pipe clamps can only clamp one type of bent pipe, with poor applicability and prominent singleness. The present invention can achieve clamping of bent pipes of different types in a clamping manner that does not damage the surface of the bent pipe and is firm.

[0004] The present invention is achieved through the following technical solutions:

[0005] A flexible clamp for a thin-walled curved pipe whose axis is a spatial curve, comprising a clamp body, the clamp body comprising a fastening assembly for clamping the curved pipe, the fastening assembly comprising a fastening body, a flexible fastening piece detachably connected to the fastening body, a rotating mechanism for driving the fastening body to rotate, and a fixing mechanism for fixing the fastening body and the curved pipe wrapped by the flexible fastening piece, wherein the fixing mechanism is mounted on the fastening body.

[0006] Most of the existing bending pipe clamps can only clamp one type of bending pipe, and have poor adaptability and singleness, resulting in a wide variety of bending pipe clamps. The present invention provides a flexible clamp for thin-walled bending pipes whose axis is a spatial curve, including a clamp body, the clamp body including a fastening assembly for clamping the bending pipe, the fastening assembly including a fastening body, a flexible fastening member detachably connected to the fastening body, a rotating mechanism for driving the fastening body to rotate, and a fixing mechanism for fixing the bending pipe wrapped by the fastening body and the flexible fastening member, the fixing mechanism being installed on the fastening body. The fastening assembly is used to fix the bending pipe. The axis of the workpiece targeted by the present application is a spatial curve. The existing clamps face the bending pipe parts at different positions, and the clamping effect is limited. The rotating mechanism can realize the rotation of the fastening body. On the horizontal plane, the fastening body can meet the bending pipes at different positions. The flexible fastener is detachably connected to the fastening body, and the flexible fastener and the fastening body form a quasi-circular ring. The flexible fastener is a flexible connecting piece. The flexible fastener can adjust its own posture according to different specifications of bent pipes, increase the contact surface between the flexible fastener and the bent pipe, and reduce damage to thin-walled bent pipes.

[0007] Preferably, the rotating mechanism comprises a rotating motor and a rotating motor support, wherein the rotating motor is mounted at the lower end of the rotating motor support, and the output shaft of the rotating motor passes through the rotating motor support, and the output shaft of the rotating motor is connected to the bottom of the fixing body. The rotating motor support may be a U-shaped structure, and ears are provided on both sides of the open end of the U-shaped structure, and the ears are connected to the outer side of the U-shaped structure, and the ears are used to fix the rotating motor support, the rotating motor is located in the U-shaped structure, and the output shaft of the rotating motor passes through the closed end of the U-shaped structure.

[0008] Preferably, the flexible fastener is a chain, and the two ends of the chain are mounted on the top of the fastening body through pins. Further, the flexible fastener can also be an iron chain, and a rubber sleeve can be put on the flexible fastener to prevent the elbow from being damaged.

[0009] Preferably, the fixing mechanism comprises a fixing screw and a fixing nut, one end of the fixing screw cooperates with the fixing nut, the other end of the fixing screw passes through the fixing body, and the fixing screw and the fixing body are threadedly matched. The fixing screw pushes the bent pipe upward from the bottom of the fixing body to fix the bent pipe.

[0010] Preferably, an arc groove is provided on the end of the fixing screw facing the flexible fastener, and the central angle of the arc groove is 15° to 90°. The application object of this application is a curved pipe. If the contact surface between the fixing screw and the curved pipe is a plane, the direction of the clamping force may not be in the axial direction of the fixing screw. An arc groove is provided on the end of the fixing screw that contacts the curved pipe, and the end face of the fixing screw is used as the arc groove. The central angle of the arc groove is preferably 20°, 25°, or 45°.

[0011] Preferably, the fastening body is a "Y"-shaped structure. To facilitate the cooperation with the flexible fastening member and realize the rotation of the fastening body, the upper end of the fastening body can be a V-shaped structure, and the lower end of the fastening body can be an inverted U-shaped structure, the open end of the U-shaped structure faces downward, the closed end of the U-shaped structure is connected to the V-shaped structure, and a threaded hole is opened at the connection between the U-shaped and the V-shaped structure, the threaded hole is matched with the fixing screw, the fixing nut is located in the U-shaped structure, and the open end is connected to a flat plate, which is connected to the output shaft of the rotating motor.

[0012] Preferably, the fixture body also includes a fixture base, a screw sliding platform and a lifting platform that are rollingly connected to the fixture base. The screw sliding platform includes a screw, a screw slide that is spirally connected to the screw, a screw coupling connected to one end of the screw, and a motor coupling connected to the screw coupling. It also includes a screw bearing seat, an X-axis slide rail, a Y-axis slide rail, a Y-guide rail mounting base, and a driving roller. The X-axis slide rail is installed on the fixture base, and a screw bearing seat is installed at both ends of the screw. The screw bearing seat is installed on the top surface of the Y-guide rail mounting base, and the screw bearing seat is located on the top of the Y-guide rail mounting base. The Y-direction slide is installed on the top surface of the Y-direction guide rail mounting base, and the number of the Y-direction slides is , and the Y-direction slides are located on both sides of the screw rod. The bottom surface of the screw rod slide cooperates with the Y-direction slide; the lifting platform includes a Z-direction cylinder mounting base, a fixture mounting platform, multiple Z-direction cylinders, and a cylinder connecting rod. The cylinder sleeve of the Z-direction cylinder is installed on the Z-direction cylinder mounting base, and the output shaft of the Z-direction cylinder is connected to one end of the cylinder connecting rod. The other side of the cylinder connecting rod is hinged to the fixture mounting platform. The Z-direction cylinder mounting base is installed on the screw rod slide, and the rotating motor support is installed on the fixture mounting platform. The X-direction slide can realize the movement of the Y-direction guide rail mounting base along the X direction, and the Y-direction slide can realize the movement of the screw rod slide in the Y direction. The vertical up and down movement of the fixture mounting platform in the Z direction is controlled by the cylinder. The fastening assembly is installed on the fixture mounting platform. The motor or cylinder is controlled by the control device to realize automatic adjustment, reduce manual adjustment of the position of the fastening assembly, and improve production efficiency. By setting up multiple Z-axis cylinders, the fixture mounting table can be tilted. By controlling the lifting height of different Z-axis cylinders, the fixture mounting table has a tilting function, which can clamp complex bent pipes and adjust the position of the fastening components.

[0013] Preferably, the Z-direction cylinder mounting base and the fixture mounting platform are both flat-plate shaped, the number of Z-direction cylinders and cylinder connecting rods is 4, and the 4 Z-direction cylinders are mounted at the four corners of the Z-direction cylinder mounting base, and the cylinder connecting rod is a combination of a cylinder and a sphere. The 4 cylinders can not only be tilted in multiple directions, but also have the best stability.

[0014] Preferably, it also includes a centering mechanism for centering the bent pipe port, the centering mechanism comprising a guide plate, a tube inner wall support rod, a support rod guide block, a turbine disk, a turbine disk support, a first gear, a centering mechanism motor, a centering mechanism motor support, a second gear, and a centering mechanism base, the guide plate, the turbine disk support, and the centering mechanism motor support are sequentially mounted on the centering mechanism base, the tube inner wall support rod is slidably connected to the guide plate, the two ends of the support rod guide block are respectively connected to the tube inner wall support rod and one side of the turbine disk, the turbine disk is mounted on the turbine disk support, and the axis of the turbine disk support is colinear with the axis of the guide plate, the other side of the turbine disk is connected to the second gear, the first gear is connected to the output shaft of the centering mechanism motor, the centering mechanism motor is mounted on the centering mechanism motor support, the first gear is meshed with the second gear, the centering mechanism motor drives the turbine disk to rotate, and the turbine disk drives the tube inner wall support rod to move along the radial direction of the guide plate, and the centering mechanism base is mounted on the top surface of the fixture mounting table. The traditional centering tool is a cone or a cylinder, which is embedded in the bent pipe to reduce the shaking of the bent pipe. However, this method has the problem of loose connection and cannot match bent pipes of different specifications. Under the action of the motor of the new mechanism, multiple support rods on the inner wall of the pipe can move along the radial direction of the guide disk to center bent pipes of different specifications.

[0015] Preferably, the guide plate is a disc with a rectangular groove, the tube inner wall support rod is a cylindrical rod with a pin groove at one end, the support rod guide block is a rectangular block with pins at both ends, and the turbine plate is a disc with a turbine line groove. The support rod guide block has two pins on one side and one pin on the other side, the two pins of the support rod guide block are embedded in the turbine line groove, one pin of the support rod guide block cooperates with the pin groove of the tube inner wall support rod, and the support rod guide block and the tube inner wall support rod can both be embedded in the rectangular groove of the guide plate.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present application adopts a motor to drive the Y-axis slide rail and the X-axis slide rail, and the Z-axis cylinder lifting platform. The fastening body can realize the movement in the X and Y directions. The Z-axis cylinder lifting platform realizes the lifting and lowering of the fastening body, and the tilting of the fastening body is realized by controlling different Z-axis cylinders. The rotating mechanism enables the fastening body to rotate and other position adjustments, thereby reducing the workload of manual adjustment, realizing automatic control, and improving operating efficiency.

[0018] 2. In the present application, the control of the lifting and lowering of four cylinders can adjust the inclination degree of the clamp mounting platform. When clamping a bent pipe whose axis is a different spatial curve shape, when facing one section of the bent pipe, the clamp mounting platform is kept parallel to the axis of the bent pipe in that section by adjusting the inclination angle, so that the fastening mechanism can clamp the bent pipe whose axis is a spatial curve.

[0019] 3. The flexible fastener uses a chain to compress the elbow, increase the contact surface with the elbow surface, reduce damage to the elbow surface, and facilitate the fixing of elbows of different diameters. The cooperation between the fixing screw and the chain makes the elbow firmly clamped, and an arc groove is set on the end face of the fixing screw, which can make the holding force and the axis direction of the fixing screw in the same direction.

[0020] 4. Compared with the use of cones and cylinders to center the bent pipe and reduce the shaking of the bent pipe, the present application uses two centering mechanisms, and the centering mechanisms are equipped with drive motors. By controlling the motors, the supporting parts on the centering mechanisms can be gradually expanded to the required diameter size to fit with the inner wall of the bent pipe, thereby fixing the two ends of the bent pipe and reducing the shaking of the two ends of the bent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0022] Figure 1 It is a schematic diagram of a fastening assembly according to a specific embodiment of the present invention.

[0023] Figure 2 It is a schematic diagram of the general assembly of a fixture according to a specific embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of a screw rod sliding platform according to a specific embodiment of the present invention.

[0025] Figure 4 It is a schematic diagram of a clamp base according to a specific embodiment of the present invention.

[0026] Figure 5 It is a schematic diagram of the centering mechanism of a specific embodiment of the present invention.

[0027] Figure 6 It is a schematic diagram of a lifting platform according to a specific embodiment of the present invention.

[0028] Figure 7 It is a schematic cross-sectional view of a fixing screw according to a specific embodiment of the present invention.

[0029] Reference numerals and corresponding parts names: 1-fastening assembly, 101-fastening body, 102-flexible fastener, 103-rotating mechanism, 1031-rotating motor, 1032-rotating motor support, 104-fixing mechanism, 1041-fixing screw, 1042-fixing nut, 2-clamp base, 3-screw sliding platform, 301-screw, 302-screw slide, 303-screw coupling, 304-motor coupling, 305-screw bearing seat, 306-X-direction slide rail, 307-Y-direction slide rail , 308-Y guide rail mounting base, 309-driving roller, 4-lifting platform, 401-Z cylinder mounting base, 402-Z cylinder, 403-cylinder connecting rod, 404-clamp mounting table, 5-centering mechanism, 501-guide plate, 502-tube inner wall support rod, 503-support rod guide block, 504-turbine disk, 505-turbine disk support, 506-first gear, 507-centering mechanism motor, 508-centering mechanism motor support, 509-second gear, 510-centering mechanism base. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0031] Embodiment 1:

[0032] like Figures 1 to 7 As shown, a flexible clamp for a thin-walled bent pipe whose axis is a spatial curve includes a clamp body, the clamp body includes a fastening component 1 for clamping the bent pipe, the fastening component 1 includes a fastening body 101, a flexible fastening member 102 detachably connected to the fastening body 101, a rotating mechanism 103 for driving the fastening body 101 to rotate, and a fixing mechanism 104 for fixing the fastening body 101 and the bent pipe wrapped by the flexible fastening member 102, wherein the fixing mechanism 104 is installed on the fastening body 101.

[0033] In this embodiment, the rotating mechanism 103 includes a rotating motor 1031 and a rotating motor support 1032. The rotating motor 1031 is installed at the lower end of the rotating motor support 1032, and the output shaft of the rotating motor 1031 passes through the rotating motor support 1032. The output shaft of the rotating motor 1031 is connected to the bottom of the fixing body 101.

[0034] In this embodiment, the flexible fastening member 102 is a chain, and both ends of the chain are mounted on the top of the fastening body 101 through pins. The fastening body 101 is a "Y"-shaped structure.

[0035] In this embodiment, the fixing mechanism 104 includes a fixing screw 1041 and a fixing nut 1042. One end of the fixing screw 1041 cooperates with the fixing nut 1042, and the other end of the fixing screw 1041 passes through the fixing body 101, and the fixing screw 1041 is threadedly matched with the fixing body 101. An arc-shaped groove is provided at the end of the fixing screw 1041, and the central angle of the arc-shaped groove is 60°.

[0036] Embodiment 2:

[0037] like Figures 1 to 7 As shown, this embodiment is further limited on the basis of embodiment 1, and the fixture body also includes a fixture base 2, a screw sliding platform 3 rollingly connected to the fixture base 2, and a lifting platform 4, the screw sliding platform 3 includes a screw 301, a screw slide 302 spirally connected to the screw 301, a screw coupling 303 connected to one end of the screw 301, and a motor coupling 304 connected to the screw coupling 303, and also includes a screw bearing seat 305, an X-direction slide rail 306, a Y-direction slide rail 307, a Y-direction guide rail mounting base 308, and a driving roller 309, the X-direction slide rail 306 is installed on the fixture base 2, a screw bearing seat 305 is installed at both ends of the screw 301, the screw bearing seat 305 is installed on the top surface of the Y-direction guide rail mounting base 308, and the screw bearing seat 305 is located at the Y-direction guide rail. In the middle position of the top surface of the mounting base 308, the Y-axis slide rail 307 is installed on the top surface of the Y-guide rail mounting base 308, and the number of the Y-axis slide rails 307 is 2, and the two Y-axis slide rails 307 are located on both sides of the screw rod 301, and the bottom surface of the screw rod slide 302 cooperates with the Y-axis slide rail 307; the lifting platform 4 includes a Z-axis cylinder mounting base 401, a fixture mounting platform 404, multiple Z-axis cylinders 402, and a cylinder connecting rod 403. The cylinder sleeve part of the Z-axis cylinder 402 is installed on the Z-axis cylinder mounting base 401, the output shaft of the Z-axis cylinder 402 is connected to one end of the cylinder connecting rod 403, and the other side of the cylinder connecting rod 403 is hinged to the fixture mounting platform 404, the Z-axis cylinder mounting base 401 is installed on the screw rod slide 302, and the rotating motor support 1032 is installed on the fixture mounting platform 404.

[0038] In this embodiment, the Z-direction cylinder mounting base 401 and the fixture mounting platform 404 are both flat-plate-shaped, and the number of Z-direction cylinders 402 and cylinder connecting rods 403 is 4. The 4 Z-direction cylinders 402 are installed at the four corners of the Z-direction cylinder mounting base 401, and the cylinder connecting rod 403 is a combination of a cylinder and a sphere.

[0039] Embodiment 3:

[0040] like Figures 1 to 7This embodiment is further limited on the basis of embodiment 1, and also includes a centering mechanism 5 for centering the bent pipe port, the centering mechanism 5 includes a guide plate 501, a tube inner wall support rod 502, a support rod guide block 503, a turbine disk 504, a turbine disk support 505, a first gear 506, a centering mechanism motor 507, a centering mechanism motor support 508, a second gear 509, and a centering mechanism base 510, the guide plate 501, the turbine disk support 505, and the centering mechanism motor support 508 are sequentially installed on the centering mechanism base 510, the tube inner wall support rod 502 is slidably connected to the guide plate 501, and the two ends of the support rod guide block 503 are respectively connected to the tube inner wall support rod 502 is connected to one side of the turbine disk 504, the turbine disk 504 is mounted on the turbine disk support 505, and the axis of the turbine disk support 505 is colinear with the axis of the guide disk 501, the other side of the turbine disk 504 is connected to the second gear 509, the first gear 506 is connected to the output shaft of the centering mechanism motor 507, the centering mechanism motor 507 is mounted on the centering mechanism motor support 508, the first gear 506 is meshed with the second gear 509, the centering mechanism motor 507 drives the turbine disk 504 to rotate, and the turbine disk 504 drives the inner wall support rod 502 to move along the radial direction of the guide disk 501, and the centering mechanism base 510 is installed on the top surface of the fixture mounting table 404.

[0041] In this embodiment, the guide disc 501 is a circular disc with 6 rectangular grooves, the inner wall support rod 502 is a cylindrical rod with a pin groove at one end, the support rod guide block 503 is a rectangular block with pins at both ends, and the turbine disc 504 is a circular disc with turbine wire grooves.

[0042] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible clamp for a thin-walled curved pipe whose axis is a spatial curve, comprising a clamp body, the clamp body comprising a fastening assembly (1) for clamping the curved pipe, characterized in that: The fastening assembly (1) comprises a fastening body (101), a flexible fastening member (102) detachably connected to the fastening body (101), a rotating mechanism (103) for driving the fastening body (101) to rotate, and a fixing mechanism (104) for fixing the fastening body (101) and a curved pipe wrapped by the flexible fastening member (102), wherein the fixing mechanism (104) is mounted on the fastening body (101), and the rotating mechanism (103) comprises a rotating motor (1031) and a rotating motor support (1032), wherein an output shaft of the rotating motor (1031) is connected to the fastening body (101); The flexible fastening member (102) is a chain, and both ends of the chain are mounted on the top of the fastening body (101) via pins; The fixture body further comprises a fixture base (2), a screw rod sliding platform (3) rollingly connected to the fixture base (2), and a lifting platform (4); the screw rod sliding platform (3) comprises a screw rod (301), a screw rod sliding platform (302) spirally connected to the screw rod (301), a screw rod coupling (303) connected to one end of the screw rod (301), and a motor coupling (304) connected to the screw rod coupling (303); the fixture body further comprises a screw rod bearing seat (305), an X-direction slide rail (306), a Y-direction slide rail (307), a Y-direction guide rail mounting base (308), and a driving roller (309); the X-direction slide rail (306) is mounted on the fixture base (2); a screw rod bearing seat (305) is mounted on both ends of the screw rod (301); the screw rod bearing seat (305) is mounted on the top surface of the Y-direction guide rail mounting base (308), and the screw rod bearing seat (305) is located at the top of the Y-direction guide rail mounting base (308). The Y-direction slide rail (307) is installed on the top surface of the Y-direction guide rail mounting base (308), and the number of the Y-direction slide rails (307) is 2, and the two Y-direction slide rails (307) are located on both sides of the screw rod (301), and the bottom surface of the screw rod slide table (302) cooperates with the Y-direction slide rail (307); the lifting platform (4) includes a Z-direction cylinder mounting base (401), a fixture mounting table (404), a plurality of Z-direction cylinders (402), and a cylinder connecting rod (403), the cylinder sleeve portion of the Z-direction cylinder (402) is mounted on the Z-direction cylinder mounting base (401), the output shaft of the Z-direction cylinder (402) is connected to one end of the cylinder connecting rod (403), the other side of the cylinder connecting rod (403) is hinged to the fixture mounting platform (404), the Z-direction cylinder mounting base (401) is mounted on the screw slide (302), and the rotating motor support (1032) is mounted on the fixture mounting platform (404); The invention also comprises a centering mechanism (5) for centering the bent pipe port, wherein the centering mechanism (5) comprises a guide plate (501), a pipe inner wall support rod (502), a support rod guide block (503), a turbine disc (504), a turbine disc support (505), a first gear (506), a centering mechanism motor (507), a centering mechanism motor support (508), a second gear (509), and a centering mechanism base (510); the guide plate (501), the turbine disc support (505), and the centering mechanism motor support (508) are sequentially mounted on the centering mechanism base (510); the pipe inner wall support rod (502) is slidably connected to the guide plate (501); and two ends of the support rod guide block (503) are respectively connected to the pipe inner wall support rod (502) and the turbine disc (504). The turbine disk (504) is connected to one side of the guide disk (501), the turbine disk (504) is mounted on the turbine disk support (505), and the axis of the turbine disk support (505) is colinear with the axis of the guide disk (501), the other side of the turbine disk (504) is connected to the second gear (509), the first gear (506) is connected to the output shaft of the centering mechanism motor (507), the centering mechanism motor (507) is mounted on the centering mechanism motor support (508), the first gear (506) is meshed with the second gear (509), the centering mechanism motor (507) drives the turbine disk (504) to rotate, and the turbine disk (504) drives the inner wall support rod (502) of the tube to move along the radial direction of the guide disk (501), and the centering mechanism base (510) is mounted on the top surface of the fixture mounting table (404).

2. A flexible clamp for thin-walled curved pipes whose axis is a spatial curve according to claim 1, characterized in that: The fixing mechanism (104) comprises a fixing screw (1041) and a fixing nut (1042); one end of the fixing screw (1041) cooperates with the fixing nut (1042); the other end of the fixing screw (1041) passes through the fixing body (101); and the fixing screw (1041) and the fixing body (101) are threadably matched.

3. A flexible clamp for thin-walled curved pipes whose axis is a spatial curve according to claim 2, characterized in that: An arc-shaped groove is provided on the end of the fixing screw (1041) facing the flexible fastening member (102), and the central angle of the arc-shaped groove is 15° to 90°.

4. A flexible clamp for thin-walled curved pipes whose axis is a spatial curve according to claim 1, characterized in that: The fastening body (101) is a "Y"-shaped structure.

5. A flexible clamp for thin-walled curved pipes whose axis is a spatial curve according to claim 1, characterized in that: The Z-direction cylinder mounting base (401) and the fixture mounting platform (404) are both flat-plate-shaped. The number of Z-direction cylinders (402) and cylinder connecting rods (403) is four. The four Z-direction cylinders (402) are mounted at the four corners of the Z-direction cylinder mounting base (401). The cylinder connecting rod (403) is a combination of a cylinder and a sphere.

6. A flexible clamp for thin-walled curved pipes whose axis is a space curve according to claim 1, characterized in that: The guide disc (501) is a disc with six rectangular grooves, the tube inner wall support rod (502) is a cylindrical rod with a pin groove at one end, the support rod guide block (503) is a rectangular block with pins at both ends, and the turbine disc (504) is a disc with turbine line grooves.

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