Hollow column part clamping mechanism

Abstract

The utility model discloses a clamping mechanism for hollow column parts, and relates to the technical field of tool clamps. According to the technical scheme, the hollow column part clamping mechanism comprises a workbench and is characterized in that a clamping assembly is installed on the workbench, a positioning assembly is installed in the center of the workbench, and a connecting assembly is installed below the clamping assembly; the clamping assembly comprises a connecting disc, four sets of fixing blocks are installed on the connecting disc, connecting rods are rotatably installed on the fixing blocks, fixing rods are installed on the fixing blocks, clamping jaws are installed on the fixing blocks, a transmission shaft is slidably installed at the center of the connecting disc, a connecting frame is installed on the transmission shaft, and a transmission rod is rotatably installed on the connecting frame. The positioning assembly comprises a rubber head, the rubber head is in a hollow hemisphere shape, and the rubber head is installed at the top end of the positioning assembly. The utility model aims to provide the clamping mechanism for the hollow column parts, so that the effect of accurately positioning and clamping the hollow column parts with different outer diameters and inner diameters is achieved.

Description

Technical Field

[0001] The utility model discloses a clamping mechanism for hollow column parts, and relates to the technical field of tooling fixtures. Background Art

[0002] Hollow column fixtures are tools specifically designed for securing and machining hollow cylindrical parts, commonly used in machining, welding, and assembly processes. They secure pipes during welding, ensuring the quality of welded joints. During product assembly, they ensure precise alignment of individual hollow column components.

[0003] The tube wall of hollow column parts is relatively thin. When clamped by a general clamp, the clamping force will be large, causing the tube wall to deform, thereby damaging the parts. In addition, the size and inner diameter of hollow column parts are different. When processing them, inaccurate inner diameter positioning will also cause the hollow column parts to shift during processing, resulting in inaccurate processing accuracy. Therefore, it is necessary to provide a clamping mechanism for hollow column parts to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a clamping mechanism for hollow column parts, which can achieve the effect of accurately positioning and clamping hollow column parts with different outer diameters and inner diameters.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamping mechanism for hollow column parts, including a workbench, characterized in that: a clamping assembly is installed on the workbench, a positioning assembly is installed at the center of the workbench, and a connecting assembly is installed below the clamping assembly; the clamping assembly includes a connecting disk, four groups of fixed blocks are installed on the connecting disk, a connecting rod is rotatably installed on the fixed block, a fixed rod is installed on the fixed block, a clamping claw is installed on the fixed block, a transmission shaft is slidably installed at the center of the connecting disk, a connecting frame is installed on the transmission shaft, and a transmission rod is rotatably installed on the connecting frame; the positioning assembly includes a rubber head, the rubber head is in the shape of a hollow hemisphere, and the rubber head is installed at the top of the positioning assembly.

[0006] Preferably, four groups of clamping assemblies are provided.

[0007] Preferably, the clamping claw is rotatably connected to the connecting rod, the connecting frame is installed above the connecting disk, and the transmission rod is rotatably connected to the connecting rod.

[0008] Preferably, the drive shaft is driven by a cylinder.

[0009] Preferably, the transmission shaft is fixedly connected to the positioning assembly, and the clamping jaw is rotationally connected to the workbench.

[0010] Preferably, a movable groove is provided on the fixed block, a movable rod is installed at the connection between the connecting rod and the fixed block, and the shape of the movable groove is an arc.

[0011] Preferably, several groups of clamping wheels are installed on the top of the clamping jaws, and the clamping wheels are provided with anti-slip rubber.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the transmission shaft is driven by the cylinder to pull the positioning assembly down, the connecting frame installed on the transmission shaft moves with the transmission shaft, one end of the transmission rod rotatably connected to the connecting frame tilts downward, and the other end pulls the connecting rod to move downward, so that the top of the clamping claw moves closer to the central axis, that is, closer to the outer wall of the hollow column-like parts, and the four groups of clamping assemblies move closer to the center at the same time, which can clamp the hollow column-like parts while positioning the center of the outer wall, further adjust the positioning position of the hollow column-like parts, and play a role of secondary positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of a clamping mechanism for hollow column parts;

[0014] Figure 2 for Figure 1 A schematic diagram of a clamping assembly of a hollow column-type part clamping mechanism;

[0015] Among them, the reference numerals in the figures are:

[0016] 1. Workbench; 2. Clamping assembly; 21. Connecting plate; 22. Fixed block; 221. Movable slot; 23. Connecting rod; 231. Movable rod; 24. Fixed rod; 25. Transmission shaft; 26. Connecting frame; 27. Transmission rod; 28. Clamping claw; 281. Clamping wheel; 3. Positioning assembly; 4. Connecting assembly. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Specific implementation cases:

[0019] like Figure 1 As shown, a hollow column part clamping mechanism includes a workbench 1, a clamping assembly 2 is installed on the workbench 1, a positioning assembly 3 is installed at the center of the workbench 1, a connecting assembly 4 is installed below the clamping assembly 2, and the clamping assembly 2 is provided with four groups;

[0020] When the hollow column part clamping mechanism is working, the positioning component 3 plays a positioning role. The inner diameter tube of the hollow column part is first inserted into the positioning component 3 to position it, and then the clamping component 2 adaptively clamps the outer wall of the hollow column part, and the connecting component 4 is connected to the processing equipment;

[0021] like Figure 2 As shown, the clamping assembly 2 includes a connecting disk 21, four groups of fixed blocks 22 are installed on the connecting disk 21, a connecting rod 23 is rotatably installed on the fixed block 22, a fixing rod 24 is installed on the fixed block 22, a clamping claw 28 is installed on the fixed block 22, and the clamping claw 28 is rotatably connected to the connecting rod 23, a transmission shaft 25 is slidably installed at the center of the connecting disk 21, a connecting frame 26 is installed on the transmission shaft 25, the connecting frame 26 is installed above the connecting disk 21, a transmission rod 27 is rotatably installed on the connecting frame 26, the transmission rod 27 is rotatably connected to the connecting rod 23, the driving mode of the transmission shaft 25 is cylinder drive, the transmission shaft 25 is fixedly connected to the positioning assembly 3, and the clamping claw 28 is rotatably connected to the workbench 1;

[0022] The movement process of the clamping assembly 2 is as follows: when the hollow column-like part is inserted into the positioning assembly 3, the cylinder drives the transmission shaft 25, pulling the positioning assembly 3 downward, and the connecting frame 26 installed on the transmission shaft 25 moves along with the transmission shaft 25. One end of the transmission rod 27 rotatably connected to the connecting frame 26 tilts downward, and the other end pulls the connecting rod 23 downward, so that the top end of the clamping claw 28 moves closer to the central axis, that is, closer to the outer wall of the hollow column-like part;

[0023] The connecting rod 23 does not maintain an absolutely downward movement posture when moving downward, but will tilt slightly. Therefore, a movable groove 221 is provided on the fixed block 22, and a movable rod 231 is installed at the connection between the connecting rod 23 and the fixed block 22. The shape of the movable groove 221 is an arc.

[0024] When the connecting rod 23 moves downward and tilts, the movable rod 231 moves along the outer wall of the movable groove 221, providing an offset for its movement, making the machine structure more stable and enabling the clamping jaws 28 to move closer to the central axis.

[0025] Several groups of clamping wheels 281 are installed on the top of the clamping jaws 28, and the clamping wheels 281 are provided with anti-slip rubber (not marked in the figure);

[0026] The clamping wheel 281 can move along the outer wall of the hollow column-like part. The anti-slip rubber on the clamping wheel 281 can increase the clamping friction when clamping the hollow column-like part, making the clamping more stable, and at the same time protect the outer wall of the hollow column-like part from being damaged due to excessive clamping force during clamping.

[0027] The positioning assembly 3 includes a rubber head 31, which is in the shape of a hollow hemisphere and is installed at the top of the positioning assembly 3;

[0028] When the inner tube of the hollow column part is inserted into the positioning assembly 3, it will be placed on the workbench 1 along the curved surface of the banana head 31, and the rubber head 31 can be inserted into the workbench 1 according to the inner diameter of the inner tube of the hollow column part. The positioning assembly 3 is located at the center of the workbench 1. When the hollow column part is inserted into the positioning assembly 3, it can be directly positioned at the center of the workbench 1.

[0029] There are four groups of clamping assemblies 2. When the transmission shaft 25 moves downward, the four groups of clamping assemblies 2 move toward the center at the same time, which can clamp the hollow column parts and position the outer wall center at the same time, further adjust the positioning position of the hollow column parts, and play a role of secondary positioning;

[0030] To sum up, the transmission shaft 25 is driven by the cylinder to pull the positioning assembly 3 down, and the connecting frame 26 installed on the transmission shaft 25 moves with the transmission shaft 25. One end of the transmission rod 27 rotatably connected to the connecting frame 26 tilts downward, and the other end pulls the connecting rod 23 to move downward, so that the top of the clamping claw 28 moves closer to the center axis, that is, closer to the outer wall of the hollow column-like parts. The four groups of clamping assemblies 2 move closer to the center at the same time, which can clamp the hollow column-like parts while positioning the center of the outer wall, further adjust the positioning position of the hollow column-like parts, and play a role of secondary positioning.

[0031] The above description is merely a preferred embodiment of the present application. The scope of protection of the present application is not limited to the above embodiment. All technical solutions based on this concept fall within the scope of protection of the present application. It should be noted that for those skilled in the art, improvements and modifications that do not depart from the principles of the present application should also be considered within the scope of protection of the present application.

Claims

1. A hollow column type parts clamping mechanism, comprising a workbench (1), characterized in that: A clamping assembly (2) is installed on the workbench (1), a positioning assembly (3) is installed at the center of the workbench (1), and a connecting assembly (4) is installed below the clamping assembly (2); The clamping assembly (2) includes a connecting disk (21), characterized in that: four groups of fixed blocks (22) are installed on the connecting disk (21), a connecting rod (23) is rotatably installed on the fixed block (22), a fixed rod (24) is installed on the fixed block (22), a clamping claw (28) is installed on the fixed block (22), a transmission shaft (25) is slidably installed at the center of the connecting disk (21), a connecting frame (26) is installed on the transmission shaft (25), and a transmission rod (27) is rotatably installed on the connecting frame (26); The positioning component (3) includes a rubber head (31), characterized in that the rubber head (31) is in the shape of a hollow hemisphere and is installed on the top of the positioning component (3).

2. A hollow column parts clamping mechanism according to claim 1, characterized in that: The clamping components (2) are provided in four groups.

3. The hollow column parts clamping mechanism according to claim 1, characterized in that: The clamping claw (28) is rotatably connected to the connecting rod (23), the connecting frame (26) is installed above the connecting disk (21), and the transmission rod (27) is rotatably connected to the connecting rod (23).

4. The hollow column parts clamping mechanism according to claim 1, characterized in that: The driving mode of the transmission shaft (25) is cylinder driving.

5. The hollow column parts clamping mechanism according to claim 1, characterized in that: The transmission shaft (25) is fixedly connected to the positioning assembly (3), and the clamping claw (28) is rotationally connected to the workbench (1).

6. The hollow column parts clamping mechanism according to claim 1, characterized in that: The fixed block (22) is provided with a movable groove (221), and a movable rod (231) is installed at the connection between the connecting rod (23) and the fixed block (22). The movable groove (221) is in the shape of an arc.

7. The hollow column parts clamping mechanism according to claim 1, characterized in that: Several groups of clamping wheels (281) are installed on the top of the clamping jaws (28), and anti-slip rubber is provided on the clamping wheels (281).

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