Clamping and supporting device for slender pipe with large length-diameter ratio

Abstract

The utility model provides a clamping and supporting device for a long and thin pipe with a large length-diameter ratio, and belongs to the technical field of machining. The clamping and supporting device for the long and thin pipe with the large length-diameter ratio comprises a lathe guide rail, a supporting device is arranged on the lathe guide rail, the supporting device comprises two machine tool center frames arranged on the lathe guide rail, supporting rings are arranged on the tops of the machine tool center frames, flanges are arranged at nodes of the two ends of a transducer supporting pipe, and disc springs are arranged between the flanges and a clamping device. The flange is in threaded connection with the clamping device through a nut; the clamping device is arranged, a workpiece can be clamped, meanwhile, the clamping device is matched with the disc spring, due to the elastic effect of the disc spring, the clamping device is subjected to outward pulling force, the workpiece is always subjected to the pulling force in the working process, the clamping device can be used for clamping the workpiece, and the clamping device can be used for clamping the workpiece in the working process. A workpiece is arranged in the supporting pipe, the movement resistance of the workpiece is reduced through the ultrasonic effect, and meanwhile the workpiece is straightened.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a clamping and support device for slender tubes with a large length-to-diameter ratio. Background Technology

[0002] High aspect ratio slender tubes, namely SIC / SIC composite material cladding tubes, are used to seal and protect fuel leaks. Composite material cladding tubes have excellent high temperature resistance, corrosion resistance, radiation resistance, high toughness, high strength, chemical stability at high temperatures, and excellent high temperature mechanical properties, giving them significant advantages in ensuring reactor safety and efficiency.

[0003] Slender tube machining is a precision manufacturing process for tubular parts with a large height-to-diameter ratio. Due to the characteristics of slender tubes, such as thin structure, low rigidity, and easy deformation, the machining process has strict requirements on equipment accuracy, process parameters, and clamping methods.

[0004] In existing technologies, machining the inner diameter of slender tubes is quite difficult. Due to the poor rigidity and low stress of slender tubes, machining is challenging and prone to vibration, leading to inaccurate precision. The apparatus described in this application allows for a length-to-diameter ratio of 400:1. Furthermore, this apparatus can process various materials, such as zirconium tubes widely used in third-generation commercial pressurized water reactors and silicon carbide tubes used in fourth-generation advanced pressurized water reactors. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a clamping and support device for slender tubes with a large length-to-diameter ratio that overcomes or at least partially solves the above technical problems.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a clamping and support device for slender tubes with a large length-to-diameter ratio, including a lathe guide rail; a support device is provided on the lathe guide rail, the support device includes two machine tool center frames set on the lathe guide rail, a support ring is provided on the top of the machine tool center frame, the support ring is fixedly connected to the node of the transducer support tube, flanges are provided at both ends of the transducer support tube, disc springs are provided between the flanges and the clamping device, and the flanges and the clamping device are connected by a nut thread; the transducer support tube is connected to the transducer through a retaining ring, and the transducer is electrically connected to a power generator.

[0008] Preferably, the clamping device includes a clamping body, the right side of which is connected to an elastic clamping cone, a rolling element retainer passing through the elastic clamping cone, a clamping nut being threadedly connected to the outer surface of the clamping body, the left side of which passes through a wear-resistant sleeve, and the other end of which is disposed in a limiting sleeve.

[0009] Preferably, both the flange and the limiting sleeve are provided with matching column holes, and a guide column is provided in the column hole. The guide column passes through the column hole of the flange and the limiting sleeve to connect the flange with the clamping device.

[0010] Preferably, there are 6 holes, which are evenly spaced.

[0011] Preferably, the support device is in multiple sets.

[0012] Preferably, the rolling element holder has a hole, and a rolling ball is disposed in the hole. This utility model provides a clamping and support device for slender tubes with a large length-to-diameter ratio.

[0013] Its beneficial effects include:

[0014] 1. This application is equipped with a clamping device that can clamp the workpiece. In conjunction with a disc spring, the clamping device is subjected to an outward pulling force due to the elasticity of the disc spring, so that the workpiece is always subjected to a pulling force during operation. The workpiece is placed inside the support tube, and the workpiece movement resistance is reduced by the action of ultrasound, while the workpiece is straightened.

[0015] 2. Since the support device of this application is used in combination of multiple sets, even if the length-to-diameter ratio of the workpiece is greatly increased, the rigidity of the workpiece is still significantly improved compared with the prior art.

[0016] 3. By adjusting the nut, the preload of the flange and the limiting sleeve is adjusted. Then, by adjusting the clamping nut, the elastic clamping cone is subjected to compressive force, which in turn subjectes the rolling element cage to radial pressure, thus clamping or limiting the long tube with a large length-to-diameter ratio. Then, the nut is loosened, which moves the flange and the limiting sleeve away, thereby subjecting the workpiece to tensile force. The relative rigidity of the workpiece is increased, preventing the long tube with a large length-to-diameter ratio from running out and affecting the machining accuracy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model;

[0019] Figure 2 A three-dimensional structural diagram of the support device provided for an embodiment of this utility model;

[0020] Figure 3 A partial structural diagram of the flange provided for an embodiment of this utility model;

[0021] Figure 4 A partial structural diagram of the flange and clamping device provided for an embodiment of this utility model;

[0022] Figure 5 A partial structural schematic diagram provided for an embodiment of this utility model.

[0023] In the diagram: 1. Lathe guide rail; 2. Support device; 3. Machine tool center frame; 4. Support ring; 5. Transducer support tube; 6. Flange; 7. Clamping device; 8. Disc spring; 9. Nut; 10. Clamping ring; 11. Transducer; 12. Clamping body; 13. Elastic clamping cone; 14. Rolling element retainer; 15. Clamping nut; 16. Wear-resistant sleeve; 17. Limiting sleeve; 18. Column hole; 19. Guide column; 20. Power generator; 21. Hole; 22. Rolling ball. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Reference Figures 1-5 This utility model provides a technical solution: a clamping and support device for a slender tube with a large length-to-diameter ratio, including a lathe guide rail 1, a support device 2 on the lathe guide rail 1, and two machine tool center frames 3 mounted on the lathe guide rail 1. A support ring 4 is provided at the top of each machine tool center frame 3, and the support ring 4 is fixedly connected to a node of a transducer support tube 5. Flanges 6 are provided at both ends of the transducer support tube 5, and disc springs 8 are provided between the flanges 6 and the clamping device 7. The flanges 6 and the clamping device 7 are threadedly connected by nuts 9. Specifically, the clamping device 7 includes a clamping body 12, and the right side of the clamping body 12 is connected to the spring... The elastic clamping cone 13 is connected, and the rolling element retainer 14 passes through the elastic clamping cone 13. The clamping nut 15 is threaded to the outer surface of the clamping body 12. The left side of the clamping body 12 passes through the wear-resistant sleeve 16, and the other end of the wear-resistant sleeve 16 is set in the limiting sleeve 17. The flange 6 and the limiting sleeve 17 are both provided with matching column holes 18. The column holes 18 are provided with guide columns 19. The guide columns 19 pass through the column holes 18 of the flange 6 and the limiting sleeve 17 to connect the flange 6 to the clamping device 7. The transducer support tube 5 is connected to the transducer 11 through the clamping ring 10. The transducer 11 is electrically connected to the power generator 20.

[0026] Furthermore, there are 6 column holes 18, which are evenly spaced.

[0027] Furthermore, the support device 2 is in multiple sets.

[0028] Furthermore, the rolling element holder 14 is provided with a hole 21, and a rolling ball 22 is provided in the hole 21.

[0029] Working principle: The workpiece is placed inside the transducer support tube 5 for initial positioning. The transducer support tube 5 is placed inside the support ring 4 to support and center the workpiece. Flanges 6 are provided at both ends of the transducer support tube 5. The guide post 19 is passed through the guide hole 18 to connect the flange 6 with the limiting sleeve 17, thereby connecting the flange 6 with the clamping device 7. By adjusting the nut 9, the preload of the flange 6 and the limiting sleeve 17 of the clamping device 7 is adjusted. Then, by adjusting the clamping nut 15, the elastic clamping cone 13 is subjected to compressive force, thereby subjecting the rolling element retainer 14 to radial pressure, clamping or limiting the large length-to-diameter ratio slender tube. Then, the nut 9 is loosened, causing the flange 6 to move away from the limiting sleeve 17, thereby subjecting the workpiece to tension, increasing the rigidity of the workpiece, and preventing the large length-to-diameter ratio slender tube from running out of control and affecting the machining accuracy.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model are included within the scope of protection of the present utility model.

Claims

1. A clamping and support device for a slender tube with a large length-to-diameter ratio, comprising a lathe guide rail (1), characterized in that; The lathe guide rail (1) is provided with a support device (2). The support device (2) includes two machine tool center frames (3) set on the lathe guide rail (1). The top of the machine tool center frame (3) is provided with a support ring (4). The support ring (4) is fixedly connected to the node of the transducer support tube (5). The nodes at both ends of the transducer support tube (5) are provided with flanges (6). A disc spring (8) is provided between the flange (6) and the clamping device (7). The flange (6) and the clamping device (7) are threadedly connected by a nut (9). The transducer support tube (5) is connected to the transducer (11) through a retaining ring (10). The transducer (11) is electrically connected to the power generator (20).

2. The clamping and support device for a slender tube with a large length-to-diameter ratio according to claim 1, characterized in that, The clamping device (7) includes a clamping body (12), the right side of which is connected to an elastic clamping cone (13), a rolling element retainer (14) passing through the elastic clamping cone (13), a clamping nut (15) being threadedly connected to the outer surface of the clamping body (12), the left side of which passes through a wear-resistant sleeve (16), and the other end of the wear-resistant sleeve (16) being disposed in a limiting sleeve (17).

3. The clamping and support device for a slender tube with a large length-to-diameter ratio according to claim 2, characterized in that, Both the flange (6) and the limiting sleeve (17) are provided with matching column holes (18). A guide post (19) is provided in the column hole (18). The guide post (19) passes through the column hole (18) of the flange (6) and the limiting sleeve (17) so that the flange (6) is connected to the clamping device (7).

4. The clamping and support device for a slender tube with a large length-to-diameter ratio according to claim 3, characterized in that, There are 6 column holes (18), and they are evenly spaced.

5. The clamping and support device for a slender tube with a large length-to-diameter ratio according to claim 1, characterized in that, The support device (2) consists of multiple sets.

6. The clamping and support device for a slender tube with a large length-to-diameter ratio according to claim 2, characterized in that, The rolling element holder (14) has a hole (21) inside, and a rolling ball (22) is provided inside the hole (21).

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