Circular tube centering and clamping device

Abstract

The utility model relates to a round tube centering and clamping device which is provided with a bottom plate, a bearing is arranged in the center of the top of the bottom plate, a positioning block is arranged on the rear side of the bearing, a shaft rod is arranged in the center of the bearing, and a gear is arranged on the shaft rod. A first rack and a second rack meshed with the gear are arranged on the front side and the rear side of the gear. A first transition plate is arranged at the top of the first rack, a second transition plate is arranged at the top of the second rack, a first clamping jaw is fixed to the top of the first transition plate, and a second clamping jaw is fixed to the top of the second transition plate. A first cylinder and a second cylinder are arranged on the top face of the bottom plate, a piston rod of the first cylinder is connected with the first transition plate, and a piston rod of the second cylinder is connected with the second transition plate. The round pipe centering and clamping device is mainly used for achieving angle control over the center shaft of the round pipe and positioning control over the center shaft of the whole round pipe part, operation is easy, rapid clamping and centering positioning of the round pipe part can be achieved, the round pipe centering and clamping device is suitable for clamping and positioning of round pipe parts with different pipe diameters, and universality is high.

Description

Technical Field

[0001] This utility model relates to the processing of round tube parts, and more particularly to a round tube centering and clamping device. Background Technology

[0002] In machining, positioning is a crucial step in processing round tube parts. Positioning round tube parts typically requires both axial positioning (positioning along the length) and angular positioning of the central axis. For example, the central axis needs to form a stable positional relationship with the machining coordinate system of the machining equipment, such as a vertical relationship, a parallel relationship, or a specific angle.

[0003] Currently, there are several common methods for positioning and clamping round tubular parts. The first is single-sided drive, where one jaw remains stationary while the other moves. The advantage is that it uses only one cylinder, making control simple and relatively economical. This is suitable for machining round tubular parts with a single type of tube. However, if the tube diameter varies, the position of the tube's central axis will constantly change after clamping, requiring the machining system's cutting tools to have a relatively flexible adjustment range. The second method is double-sided motor drive, which ensures the synchronization and accuracy of the round tubular part's position, but it involves more control nodes and is more expensive. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a round tube centering clamping device that is simple in structure, easy to operate, and can facilitate the quick clamping and centering of round tube parts.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A cylindrical tube centering clamping device includes a base plate. A bearing is disposed at the top center of the base plate, and the outer ring of the bearing is fixed to the base plate. A positioning block for supporting the cylindrical tube part is disposed on the base plate at the rear side of the bearing. A shaft is disposed at the center of the inner ring of the bearing and is fixedly connected to the inner ring of the bearing, allowing it to rotate flexibly relative to the outer ring of the bearing. A gear is disposed on the shaft above the bearing and is fixedly connected to it. The gear can rotate flexibly via the shaft. A first rack and a second rack are disposed on the front and rear sides of the gear and mesh with it. The first rack and the second rack are parallel to each other. The top of the first rack is fixedly disposed... The system includes a first transition plate and a second transition plate fixedly mounted on the top of a second rack. A first gripper is fixedly mounted on the top of the first transition plate, and a second gripper is fixedly mounted on the top of the second transition plate. The first and second grippers are symmetrically positioned about the gear. A first cylinder and a second cylinder are respectively mounted on the top surface of the base plate near its left and right ends. The first and second cylinders are symmetrically positioned about the gear. The piston rod of the first cylinder is fixedly connected to the first transition plate, and the piston rod of the second cylinder is fixedly connected to the second transition plate. The first and second cylinders can drive the first and second grippers to move in opposite directions.

[0007] Furthermore, a first guide rail is fixedly connected to the bottom surface of the first rack along its left-right length direction, and the first guide rail slides in a left-right engagement with a first slider fixedly mounted on the base plate; a second guide rail is fixedly connected to the bottom surface of the second rack along its left-right length direction, and the second guide rail slides in a left-right engagement with a second slider fixedly mounted on the base plate.

[0008] Furthermore, a bearing seat is provided at the top center of the base plate, and a bearing hole with an upper opening is provided at the center of the bearing seat. The bearing is embedded in the bearing hole, and the outer ring of the bearing is tightly fitted with the bearing hole and fixedly connected together.

[0009] Furthermore, a V-shaped positioning groove is provided at the top center of the positioning block.

[0010] Furthermore, the top height of the first and second grippers is higher than the top height of the positioning block.

[0011] Furthermore, vertical anti-slip grooves are provided on the corresponding surfaces of the first and second grippers.

[0012] Compared with the prior art, the advantages of this utility model are: this round tube centering clamping device is mainly used to realize the angle control of the central axis of the round tube. The V-shaped positioning groove on the positioning block realizes the centering positioning of the round tube part. The first and second clamps realize the clamping of the round tube part, realizing the positioning control of the central axis of the entire round tube part. It is simple to operate, can realize the quick clamping and centering positioning of the round tube part, and is suitable for clamping and positioning of round tube parts of different diameters, with strong versatility. Attached Figure Description

[0013] 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 on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the front axial side structure of a circular tube centering clamping device according to this utility model;

[0015] Figure 2 This is a schematic diagram of the axial structure on the back of a circular tube centering clamping device according to this utility model;

[0016] Figure 3 This is a top view schematic diagram of a circular tube centering clamping device according to the present invention;

[0017] Figure 4 This is a schematic diagram of the positioning block structure in a circular tube centering clamping device of this utility model;

[0018] Figure 5 This is a schematic diagram of the clamping state of a circular tube centering and clamping device according to the present invention.

[0019] In the diagram: 1. Base plate; 2. Shaft; 21. Bearing; 22. Bearing seat; 3. Gear; 4. First rack; 41. First guide rail; 42. First slider; 5. Second rack; 51. Second guide rail; 52. Second slider; 6. Positioning block; 61. V-shaped positioning groove; 7. First gripper; 71. First transition plate; 8. Second gripper; 81. Second transition plate; 9. Anti-slip groove; 100. First cylinder; 200. Second cylinder; 300. Round tube part. Detailed Implementation

[0020] 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, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships commonly used when the product of the present invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0022] Furthermore, the use of terms such as "horizontal" or "vertical" does not imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure or component must be completely horizontal, but can be slightly tilted.

[0023] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0024] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example

[0026] Please refer to the instruction manual attached. Figures 1 to 3 As shown, the instruction manual is attached. Figures 1 to 3 The diagram shows a specific embodiment of a circular tube centering clamping device of this utility model, mainly used for angle control and fixed positioning of the central axis of circular tube parts. The circular tube centering clamping device has a base plate 1, with a bearing 21 disposed at the top center of the base plate 1. The outer ring of the bearing 21 is fixed to the base plate 1. To facilitate the installation of the bearing 21 on the base plate 1, a bearing seat 22 is disposed at the top center of the base plate 1. The bearing seat 22 has a bearing hole with an open upper end at its center, and the bearing 21 is embedded in the bearing hole. The outer ring of the bearing 21 is tightly fitted with the bearing hole and fixedly connected together. A positioning block 6 for supporting the circular tube part 300 is disposed on the base plate 1 at the rear side of the bearing 21. (See attached specification). Figure 4 As shown, the top center of the positioning block 6 is provided with a V-shaped positioning groove 61, which can quickly position the height and center of the round tube part 300; the center of the inner ring of the bearing 21 is provided with a shaft 2, which is vertically arranged and fixedly connected to the inner ring of the bearing 21. The shaft 2 can rotate synchronously with the inner ring 21, and correspondingly, the shaft 2 can rotate flexibly relative to the outer ring of the bearing 21; a gear 3 is provided on the shaft 2 above the bearing 21 and is fixedly connected to it. The gear 3 is horizontally arranged and can rotate flexibly through the shaft 2; the front and rear sides of the gear 3 are provided with a first rack 4 and a second rack 5 that mesh with it. The first rack 4 and the second rack 5 are parallel to each other, as shown in the attached instruction manual. Figure 1 and 3 As shown, gear 3 is located between the first rack 4 and the second rack 5. If the speeds of the first rack 4 and the second rack 5 are inconsistent, the meshing action of gear 3 will force the speeds of the two racks to become the same. During the synchronization process, the rack on the faster side transmits the force to gear 3, and gear 3 transmits the received force to the opposite rack, thereby driving the opposite rack to move at the same speed. To improve the synchronization accuracy, the gap between the gears and racks needs to be controlled. The higher the degree of meshing and the smaller the gap, the higher the synchronization accuracy. To limit the movement direction of the first rack 4 and the second rack 5 and ensure the linearity of their movement, refer to the appendix of the specification. Figure 1As shown, to ensure the straightness of the rack's movement, a first guide rail 41 is fixedly connected to the bottom surface of the first rack 4 along its left-right length direction. The first guide rail 41 slides in a left-right engagement with a first slider 42 fixedly mounted on the base plate 1. A second guide rail 51 is fixedly connected to the bottom surface of the second rack 5 along its left-right length direction. The second guide rail 51 slides in a left-right engagement with a second slider 52 fixedly mounted on the base plate 1. A first transition plate 71 is fixedly mounted on the top of the first rack 4, and a second transition plate 81 is fixedly mounted on the top of the second rack 5. To facilitate the clamping and fixing of the cylindrical part 300 placed on the positioning block 6, a first gripper 7 is fixed to the top of the first transition plate 71, and a second gripper 8 is fixed to the top of the second transition plate 81. The first gripper 7 and the second gripper 8 are oriented left and right around the gear 3. The top height of the first gripper 7 and the second gripper 8 is higher than the top height of the positioning block 6, ensuring that the first gripper 7 and the second gripper 8 can clamp the cylindrical part 300 on the positioning block 6. To increase the clamping force of the first gripper 7 and the second gripper 8, please refer to the appendix of the instruction manual. Figures 1 to 3 As shown, vertical anti-slip grooves 9 are provided on the corresponding surfaces of the first gripper 7 and the second gripper 8. There are multiple anti-slip grooves 9 on the corresponding surfaces of the first gripper 7 and the second gripper 8, arranged in parallel. In order to drive the first gripper 7 and the second gripper 8 to move, a first cylinder 100 and a second cylinder 200 are respectively provided on the top surface of the base plate 1 near its left and right ends. The first cylinder 100 and the second cylinder 200 are symmetrically arranged on the left and right sides with the gear 3 as the center. The piston rod of the first cylinder 100 is fixedly connected to the first transition plate 71, and the piston rod of the second cylinder 200 is fixedly connected to the second transition plate 81. The first cylinder 100 and the second cylinder 200 push the first transition plate 71 and the second transition plate 81 respectively. The first transition plate 71 drives the first gripper 7 to move synchronously, and the second transition plate 81 drives the second gripper 8 to move synchronously, so as to realize the first gripper 7 and the second gripper 8 moving towards each other or in opposite directions, for clamping and loosening the round tube part 300 on the positioning block 6.

[0027] When using, such as Figure 5As shown, the round tube part 300 is first placed on the V-shaped positioning groove 61 of the limiting block 6. At this time, the central axis of the round tube part 300 is initially fixed in the vertical direction. Then, the first cylinder 100 and the second cylinder 200 are started. The first cylinder 100 and the second cylinder 200 drive the corresponding first transition plate 71 and the second transition plate 81 to drive the first rack 4 and the second rack 5 to move respectively. The first rack 4 and the second rack 5 drive the first gripper 7 and the second gripper 8 to move relative to each other. Due to the effect of the gear and rack synchronization structure, the movement of the first gripper 7 and the second gripper 8 maintains speed and position synchronization. When the first gripper 7 and the second gripper 8 clamp the round tube part 300, it can ensure that the center of the round tube part 300 does not move. If the length of the round tube part 300 is short, a single device can meet the requirements. However, when the round tube part 300 is long, multiple round tube centering clamping devices described in this utility model are usually required to be used in parallel to ensure the positioning of the central axis of the round tube part 300.

[0028] This round tube centering clamping device is mainly used to achieve angle control of the central axis of the round tube. The V-shaped positioning groove 61 on the positioning block 6 realizes the centering positioning of the round tube part 300. The first gripper 7 and the second gripper 8 realize the clamping of the round tube part 300, realizing the positioning control of the central axis of the entire round tube part 300. It is simple to operate and can realize the quick clamping and centering positioning of the round tube part 300. It is suitable for clamping and positioning round tube parts 300 of different diameters and has strong versatility.

[0029] It should be emphasized that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circular tube centering and clamping device, characterized in that: The device has a base plate (1), a bearing (21) is provided at the top center of the base plate (1), the outer ring of the bearing (21) is fixed on the base plate (1), and a positioning block (6) for supporting the round tube part (300) is provided on the base plate (1) at the rear side of the bearing (21); a shaft (2) is provided at the center of the inner ring of the bearing (21), the shaft (2) is fixedly connected to the inner ring of the bearing (21), and it can rotate flexibly relative to the outer ring of the bearing (21); a gear (3) is provided on the shaft (2) at the position above the bearing (21), and the gear (3) can rotate flexibly through the shaft (2); a first rack (4) and a second rack (5) are provided on the front and rear sides of the gear (3) to mesh with it, the first rack (4) and the second rack (5) are parallel to each other; a first transition plate (71) is fixedly provided on the top of the first rack (4). A second transition plate (81) is fixedly provided on the top of the second rack (5), a first gripper (7) is fixedly provided on the top of the first transition plate (71), and a second gripper (8) is fixedly provided on the top of the second transition plate (81). The first gripper (7) and the second gripper (8) are symmetrically arranged with the gear (3) as the center. A first cylinder (100) and a second cylinder (200) are respectively provided on the top surface of the base plate (1) near its left and right ends. The first cylinder (100) and the second cylinder (200) are symmetrically arranged with the gear (3) as the center. The piston rod of the first cylinder (100) is fixedly connected to the first transition plate (71), and the piston rod of the second cylinder (200) is fixedly connected to the second transition plate (81). The first cylinder (100) and the second cylinder (200) can drive the first gripper (7) and the second gripper (8) to move towards each other or in opposite directions.

2. The circular tube centering clamping device according to claim 1, characterized in that: The bottom surface of the first rack (4) is fixedly connected to a first guide rail (41) along its left and right length direction. The first guide rail (41) and the first slider (42) fixedly set on the base plate (1) slide in left and right cooperation. The bottom surface of the second rack (5) is fixedly connected to a second guide rail (51) along its left and right length direction. The second guide rail (51) and the second slider (52) fixedly set on the base plate (1) slide in left and right cooperation.

3. The circular tube centering clamping device according to claim 1, characterized in that: The base plate (1) has a bearing seat (22) at the top center, and a bearing hole with an upper opening at the center of the bearing seat (22). The bearing (21) is fitted into the bearing hole, and the outer ring of the bearing (21) fits tightly with the bearing hole and is fixedly connected together.

4. A circular tube centering clamping device according to claim 1, characterized in that: The positioning block (6) has a V-shaped positioning groove (61) at its top center.

5. A circular tube centering clamping device according to claim 1, characterized in that: The top height of the first gripper (7) and the second gripper (8) is higher than the top height of the positioning block (6).

6. A circular tube centering clamping device according to claim 1, characterized in that: Vertical anti-slip grooves (9) are provided on the corresponding surfaces of the first gripper (7) and the second gripper (8).

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