Positioning fixture for cutting seamless steel pipe

Abstract

The utility model relates to steel pipe cutting technical field discloses a kind of positioning fixtures for seamless steel pipe cutting, including workbench, the fixed block one is fixedly connected in the workbench outer wall, the fixed rod is fixedly connected in the workbench inner wall, clamping assembly is provided in the workbench upper portion, the clamping assembly includes clamp, the clamp is set in workbench upper portion, the connecting block three is fixedly connected in the clamp outer wall, the connecting block two is attached in the connecting block three outer wall, the connecting rod one is rotatably connected in the connecting block two outer wall.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe cutting technology, and in particular to a positioning clamp for cutting seamless steel pipes. Background Technology

[0002] Seamless steel pipes are widely used in industrial manufacturing, including petroleum, chemical, and machinery industries. The precision of their cutting process directly affects subsequent assembly and performance. In traditional cutting processes, the positioning and clamping of the steel pipe are crucial steps. Insufficient clamping stability or uneven clamping force can easily lead to cutting deviations and burrs on the cut. Therefore, developing a high-precision, high-stability positioning fixture for cutting seamless steel pipes is of great significance for improving processing quality and production efficiency.

[0003] Currently, most common steel pipe cutting fixtures employ mechanical clamping or hydraulic drive methods, such as using V-blocks and bolts for locking, or using hydraulic cylinders to push the grippers for fixation. Some automated equipment uses servo motors to drive lead screw mechanisms to adjust the clamping position to accommodate steel pipes of different diameters. Additionally, some fixtures use a fixed structure, matching different sizes of steel pipes by changing different specifications of clamping blocks; however, the overall structure is relatively complex, and the adjustment process is time-consuming.

[0004] However, traditional clamps often require manual adjustment or component replacement when adapting to different pipe diameters, which is cumbersome and difficult to meet the demands of efficient and high-precision production. Therefore, there is an urgent need for a clamp structure that can achieve uniform clamping, stable positioning, and rapid adjustment capabilities to improve the cutting quality and processing efficiency of seamless steel pipes. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a positioning fixture for cutting seamless steel pipes, which aims to improve the problem that traditional fixtures often require manual adjustment or replacement of parts when adapting to different pipe diameters, making the operation cumbersome and difficult to meet the needs of efficient and high-precision production.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning fixture for cutting seamless steel pipes, comprising a worktable, a fixing block fixedly connected to the outer wall of the worktable, a fixing rod fixedly connected to the inner wall of the worktable, and a clamping assembly provided above the worktable;

[0007] The clamping assembly includes a clamp disposed above the worktable. A connecting block three is fixedly connected to the outer wall of the clamp. A connecting block two is attached to the outer wall of the connecting block three. A connecting rod one is rotatably connected to the outer wall of the connecting block two. A rotating sleeve one is fixedly connected to the outer wall of the connecting rod one. An L-shaped connecting rod is rotatably connected inside the rotating sleeve one. A connecting block one is rotatably connected to the outer wall of the L-shaped connecting rod. A cylinder is disposed inside the worktable. The output end of the cylinder is fixedly connected to the outer wall of the connecting block one. A sliding sleeve is slidably connected to the outer wall of the fixed rod. A rotating sleeve two is rotatably connected to the outer wall of the sliding sleeve. A connecting rod two is rotatably connected inside the rotating sleeve two.

[0008] Furthermore, a fixing plate is fixedly connected to the outer wall of the connecting block three, and a guide block is fixedly connected to the outer wall of the fixing plate one. A replacement component is provided inside the guide block.

[0009] Furthermore, the replacement component includes a slide rod, the outer wall of which is slidably connected to the inside of the guide block, a telescopic rod fixedly connected to the outer wall of the slide rod, a spring sleeved on the outer wall of the telescopic rod, a fixing block two fixedly connected to the outer wall of the slide rod, and a limit plate fixedly connected to the lower surface of the slide rod.

[0010] Furthermore, the lower surface of the second connecting block is slidably connected to the upper surface of the workbench, and one end of the second connecting rod is fixedly connected to the outer wall of the L-shaped connecting rod.

[0011] Furthermore, the outer wall of the limiting disc is slidably connected to the inner wall of the connecting block two, and the outer wall of the slide rod is slidably connected to the inner wall of the connecting block two.

[0012] Furthermore, the sliding rod is attached to the outer wall of the connecting block three, and the fixing block two is positioned above the connecting block two.

[0013] Furthermore, the L-shaped connecting rod is internally rotatably connected to the outer wall of a fixed block.

[0014] Furthermore, both ends of the spring are fixedly connected to the outer wall of the slide rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the L-shaped connecting rod driven by the cylinder drives the clamping assembly to move. With the guidance of the fixed rod and the sliding sleeve, uniform clamping and stable positioning of the seamless steel pipe are achieved, which effectively improves the accuracy and reliability of the cutting process. The fixture can adapt to steel pipes of different diameters, expanding the scope of application. At the same time, the overall structure is simple and compact, and the operation is convenient, meeting the needs of high-efficiency production.

[0017] 2. In this utility model, the limiting position can be released by pressing the fixing block, and the fixture can be easily disassembled and replaced, which significantly improves the mold changing efficiency, solves the technical problem of cumbersome fixture replacement in the past, and enables the equipment to quickly adapt to the processing needs of steel pipes of various specifications, greatly improving production flexibility and operating efficiency, especially suitable for small batch and multi-variety production scenarios. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a positioning fixture for cutting seamless steel pipes proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the workbench structure of a positioning fixture for cutting seamless steel pipes proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping part of a positioning fixture for cutting seamless steel pipes according to the present invention.

[0021] Figure 4 for Figure 3 Enlarged view of point A;

[0022] Figure 5 This is a schematic diagram of the limiting plate part of a positioning clamp for cutting seamless steel pipes proposed in this utility model.

[0023] Legend:

[0024] 1. Workbench; 2. Fixed plate one; 3. Cylinder; 4. Connecting block one; 5. Connecting rod one; 6. L-shaped connecting rod; 7. Connecting rod two; 8. Fixed block one; 9. Rotating sleeve one; 10. Limiting plate; 11. Connecting block two; 12. Connecting block three; 13. Fixture; 14. Rotating sleeve two; 15. Telescopic rod; 16. Sliding sleeve; 17. Fixed rod; 18. Spring; 19. Guide block; 20. Sliding rod; 21. Fixed block two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-3The present invention provides an embodiment of a positioning fixture for cutting seamless steel pipes, including a workbench 1, which serves as the mounting base for the entire fixture and provides stable support. A fixing block 8 is fixedly connected to the outer wall of the workbench 1, which serves as the rotation fulcrum of the L-shaped connecting rod 6 to realize the transmission and conversion of force. A fixing rod 17 is fixedly connected to the inner wall of the workbench 1, which provides linear motion guidance for the sliding sleeve 16 to ensure clamping stability. A clamping assembly is provided above the workbench 1.

[0027] The clamping assembly includes a clamp 13, which directly contacts and clamps the steel pipe to achieve a positioning function. The clamp 13 is positioned above the workbench 1. A connecting block 3 12 is fixedly connected to the outer wall of the clamp 13. A connecting block 2 11 is attached to the outer wall of the connecting block 3 12. The connecting block 2 11 slides along the workbench 1, causing the clamp 13 to move. A connecting rod 1 5 is rotatably connected to the outer wall of the connecting block 2 11. The connecting rod 1 5 transmits the movement of the L-shaped connecting rod 6 to the connecting block 2 11. A rotating sleeve 1 9 is fixedly connected to the outer wall of the connecting rod 1 5. The rotating sleeve 1 9 enables the rotatable connection between the connecting rod 1 5 and the L-shaped connecting rod 6. The rotating sleeve 1 9 is internally rotatably connected to... There is an L-shaped connecting rod 6, which converts the linear motion of the cylinder 3 into rotational motion. A connecting block 4 is rotatably connected to the outer wall of the L-shaped connecting rod 6. The connecting block 4 connects the output end of the cylinder 3 to the L-shaped connecting rod 6 to transmit driving force. The cylinder 3 is installed inside the worktable 1. The cylinder 3 provides linear driving force to drive the entire clamping mechanism. The output end of the cylinder 3 is fixedly connected to the outer wall of the connecting block 4. A sliding sleeve 16 is slidably connected to the outer wall of the fixed rod 17. The sliding sleeve 16 slides along the fixed rod 17 to enhance clamping stability. A rotating sleeve 14 is rotatably connected to the outer wall of the sliding sleeve 16. A connecting rod 7 is rotatably connected inside the rotating sleeve 14.

[0028] Specifically, firstly, cylinder 3 is started, and its output end pushes connecting block 4 to move in a straight line. The movement of connecting block 4 drives L-shaped connecting rod 6 to rotate around fixed block 8. The rotation of L-shaped connecting rod 6 is transmitted to connecting block 11 through connecting rod 5, so that connecting block 11 slides smoothly along the upper surface of worktable 1. Then, connecting rod 7 drives sliding sleeve 16 to move in a straight line along fixed rod 17. Connecting block 11 drives clamp 13 to move synchronously towards the center of steel pipe, so as to achieve uniform clamping of steel pipe and ensure the accuracy of cutting processing.

[0029] Reference Figure 4 and Figure 5A fixing plate 2 is fixedly connected to the outer wall of connecting block 3 12. A guide block 19 is fixedly connected to the outer wall of fixing plate 2. The guide block 19 provides sliding guidance for slide rod 20. A replacement component is provided inside the guide block 19. The replacement component includes slide rod 20. Slide rod 20 achieves quick assembly and disassembly of clamp 13 through axial movement. The outer wall of slide rod 20 is slidably connected to the inside of guide block 19. A telescopic rod 15 is fixedly connected to the outer wall of slide rod 20. Telescopic rod 15 provides telescopic movement guidance for slide rod 20. A spring 18 is sleeved on the outer wall of telescopic rod 15. Spring 18 provides reset elasticity to maintain the limited state. A fixing block 21 is fixedly connected to the outer wall of slide rod 20. 21 serves as an operating handle, facilitating manual pulling. The lower surface of the slide rod 20 is fixedly connected to the limiting plate 10. The limiting plate 10 cooperates with the connecting block 2 11 to lock the clamp 13. The lower surface of the connecting block 2 11 is slidably connected to the upper surface of the worktable 1. One end of the connecting rod 2 7 is fixedly connected to the outer wall of the L-shaped connecting rod 6. The outer wall of the limiting plate 10 is slidably connected to the inner wall of the connecting block 2 11. The outer wall of the slide rod 20 is slidably connected to the inner wall of the connecting block 2 11. The slide rod 20 is attached to the outer wall of the connecting block 3 12. The fixing block 2 21 is set above the connecting block 2 11. The L-shaped connecting rod 6 is rotatably connected to the outer wall of the fixing block 1 8. Both ends of the spring 18 are fixedly connected to the outer wall of the slide rod 20.

[0030] Specifically, the operator only needs to press the fixing block 21 to make the slide rod 20 slide along the guide groove inside the guide block 19. The movement of the slide rod 20 compresses the spring 18 and drives the limiting plate 10 to disengage from the limiting groove of the connecting block 21, thereby releasing the lock on the connecting block 32. At this time, the clamp 13 and the connecting block 32 fixedly connected to it can be easily separated from the connecting block 21, and the operator can quickly replace it with other types of clamps.

[0031] Working principle: When the positioning fixture for cutting seamless steel pipes is needed, the cylinder 3 is started, and its output end pushes the connecting block 4 to move, which drives the L-shaped connecting rod 6 to rotate around the fixed block 8. One side of the L-shaped connecting rod 6 is transmitted to the connecting block 11 through the connecting rod 5, so that it slides along the surface of the worktable 1. On the other hand, it drives the sliding sleeve 16 to move along the fixed rod 17 through the connecting rod 7. The connecting block 11 is connected to the fixture 13 through the connecting block 12, thereby driving the fixture 13 to move towards the steel pipe, so as to achieve uniform clamping and improve processing accuracy. In addition, the cooperation between the fixed rod 17 and the sliding sleeve 16 makes the clamping process more stable and reliable, and can achieve the clamping effect of different steel pipe sizes.

[0032] In addition, when it is necessary to change the clamp 13, the operator presses the fixing block 21, causing the slide rod 20 to slide along the inside of the guide block 19, while compressing the spring 18. The sliding of the slide rod 20 causes the limiting plate 10 to disengage from the limiting groove of the connecting block 21, releasing the lock on the connecting block 32. At this time, the clamp 13 and the connecting block 32 can be easily removed from the connecting block 21 and replaced with other types of clamps, realizing quick mold change, simple operation, improving production efficiency, and suitable for the production needs of cutting steel pipes of multiple specifications.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for cutting seamless steel pipes, comprising a worktable (1), characterized in that: The outer wall of the workbench (1) is fixedly connected to a fixing block (8), the inner wall of the workbench (1) is fixedly connected to a fixing rod (17), and a clamping assembly is provided above the workbench (1). The clamping assembly includes a clamp (13), which is set above the workbench (1). A connecting block three (12) is fixedly connected to the outer wall of the clamp (13). A connecting block two (11) is attached to the outer wall of the connecting block three (12). A connecting rod one (5) is rotatably connected to the outer wall of the connecting block two (11). A rotating sleeve one (9) is fixedly connected to the outer wall of the connecting rod one (5). An L-shaped connecting rod (6) is rotatably connected inside the rotating sleeve one (9). A connecting block one (4) is rotatably connected to the outer wall of the L-shaped connecting rod (6). A cylinder (3) is set inside the workbench (1). The output end of the cylinder (3) is fixedly connected to the outer wall of the connecting block one (4). A sliding sleeve (16) is slidably connected to the outer wall of the fixed rod (17). A rotating sleeve two (14) is rotatably connected to the outer wall of the sliding sleeve (16). A connecting rod two (7) is rotatably connected inside the rotating sleeve two (14).

2. The positioning fixture for cutting seamless steel pipes according to claim 1, characterized in that: The outer wall of the connecting block three (12) is fixedly connected to the fixing plate one (2), and the outer wall of the fixing plate one (2) is fixedly connected to the guide block (19). The guide block (19) is provided with a replacement component inside.

3. A positioning fixture for cutting seamless steel pipes according to claim 2, characterized in that: The replacement component includes a slide rod (20), the outer wall of which is slidably connected to the inside of the guide block (19), a telescopic rod (15) is fixedly connected to the outer wall of the slide rod (20), a spring (18) is sleeved on the outer wall of the telescopic rod (15), a fixing block two (21) is fixedly connected to the outer wall of the slide rod (20), and a limit plate (10) is fixedly connected to the lower surface of the slide rod (20).

4. A positioning fixture for cutting seamless steel pipes according to claim 1, characterized in that: The lower surface of the connecting block 2 (11) is slidably connected to the upper surface of the workbench (1), and one end of the connecting rod 2 (7) is fixedly connected to the outer wall of the L-shaped connecting rod (6).

5. A positioning fixture for cutting seamless steel pipes according to claim 3, characterized in that: The outer wall of the limiting disc (10) is slidably connected to the inner wall of the connecting block two (11), and the outer wall of the slide rod (20) is slidably connected to the inner wall of the connecting block two (11).

6. A positioning fixture for cutting seamless steel pipes according to claim 3, characterized in that: The slide bar (20) is attached to the outer wall of the connecting block three (12), and the fixing block two (21) is located above the connecting block two (11).

7. A positioning fixture for cutting seamless steel pipes according to claim 1, characterized in that: The L-shaped connecting rod (6) is internally rotatably connected to the outer wall of the fixed block (8).

8. A positioning fixture for cutting seamless steel pipes according to claim 3, characterized in that: Both ends of the spring (18) are fixedly connected to the outer wall of the slide rod (20).

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