A two-bridge arm external thread machining device

By designing an automatic adjustment device for the moving box, rotating disk, and cutting tool, the problems of low machining efficiency and rapid tool wear in the existing technology of two-bridge arm external thread machining are solved, achieving efficient and low-cost thread machining results.

CN224508635UActive Publication Date: 2026-07-17DONGFENG SHIYAN AUTO FORGED STEEL

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGFENG SHIYAN AUTO FORGED STEEL
Filing Date
2025-08-08
Publication Date
2026-07-17

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    Figure CN224508635U_ABST
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Abstract

This utility model relates to the field of two-bridge arm machining technology, specifically disclosing a two-bridge arm external thread machining device, including a movable box, a rotating disk rotatably connected to the bottom of the movable box, and two sets of sliding boxes. The device is characterized in that: two sets of support frames are slidably connected to the bottom of the rotating disk, and cutting tools are mounted on the support frames; the movable box is equipped with a drive assembly for adjusting the sliding of the two sets of support frames. This utility model, by setting up a movable box, rotating disk, support frames, cutting tools, drive assembly, moving assembly, and rotating assembly, allows the drive assembly to drive the two sets of support frames to move the cutting tools towards each other at the bottom of the rotating disk, thereby adjusting the required thread depth of the two-bridge arm; the rotating assembly can drive the two sets of cutting tools to rotate and machine the two-bridge arm; and the moving assembly drives the movable box to move, facilitating machining, improving machining efficiency, and reducing the wear rate of the cutting tools.
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Description

Technical Field

[0001] This utility model relates to the field of two-bridge arm processing technology, specifically a two-bridge arm external thread processing device. Background Technology

[0002] The external threads on the bridge arms are primarily for enabling detachable connections and precise assembly with other components. The external thread structure, in conjunction with the internal threads, ensures the bridge arms are stably fixed within the mechanical system, while also facilitating later maintenance, replacement, or position adjustments. When transmitting force or torque, threaded connections can distribute stress, improving the overall structural load-bearing capacity and preventing excessive localized stress caused by rigid connections.

[0003] A thread processing device disclosed in existing patent publication number CN216028570U includes a cutting part, a first adjusting part, and a second adjusting part. One end of the first adjusting part is fixed to a slider, and the extension length of the other end of the first adjusting part is adjustable. The second adjusting part is fixed on the other end of the first adjusting part. The cutting part is disposed inside the second adjusting part. The height of the cutting part relative to the second base can be adjusted by the first adjusting part. By adjusting the relative position of the cutting part inside the second adjusting part (i.e., adjusting the clamping position of the cutting part), the cutting position of the cutting part can be adjusted to improve the processing accuracy and obtain a thread that meets the usage requirements. The device also includes a first sleeve, a first adjusting bolt, and an adjusting rod. The first sleeve is disposed on the slider, the adjusting rod extends into the first sleeve, the first adjusting bolt passes through the first sleeve and is used to push the adjusting rod to adjust the extension length of the adjusting rod, and the free end of the adjusting rod is fixed to the second adjusting part.

[0004] In the thread machining process described above, the height of the cutting part needs to be manually adjusted after the workpiece is fixed. Since the cutting operation needs to be carried out at the end of the workpiece, this requires the height adjustment to be completed while the workpiece is continuously rotating. This not only makes it difficult to control the thread depth and results in extremely low machining efficiency, but also significantly accelerates the wear rate of the cutting tool.

[0005] To address the above problems, a two-bridge arm external thread machining device is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a two-bridge arm external thread processing device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A two-arm external thread processing device includes a movable box, a rotating disk rotatably connected to the bottom of the movable box, and two sets of sliding boxes. The device is characterized in that: two sets of support frames are slidably connected to the bottom of the rotating disk, and cutting tools are installed on the support frames; the movable box is provided with a drive assembly for adjusting the sliding of the two sets of support frames.

[0009] The driving assembly includes a movable seat and a movable slot. The movable seat is fixedly connected to the top of the support frame, and the movable slot is opened on the rotating disk. The movable seat is slidably connected in the movable slot. A guide rod is fixedly connected to the top of the rotating disk, and a sliding seat is slidably connected to the guide rod. Rotating rods are rotatably connected to both sides of the sliding seat. The end of the rotating rod away from the sliding seat is rotatably connected to the top of the movable seat. A sliding component for driving the sliding seat to move up and down is provided inside the movable box.

[0010] The sliding box is equipped with a moving component for driving the moving box to slide up and down, and the moving box is equipped with a rotating component for driving the rotating disk to rotate.

[0011] In one alternative embodiment: the sliding component includes two sets of guide plates and guide grooves, the two sets of guide plates are rotatably connected to one set of sliding seats, the two sets of guide grooves are respectively opened on both sides of the inner wall of the movable box, the guide plates are slidably connected in the guide grooves, and two sets of electro-hydraulic rods are installed on the top of the movable box, the power output ends of the two sets of electro-hydraulic rods are respectively connected to the top of the two sets of guide plates.

[0012] In one alternative embodiment: the moving component includes a screw and a fixed plate. The screw is rotatably connected to a set of sliding boxes, and the fixed plate is fixedly connected to the top of the moving box. The two ends of the fixed plate are slidably connected to two sets of sliding boxes respectively. A sliding rod is fixedly connected to another set of sliding boxes. The fixed plate has a threaded hole for threaded connection with the screw and a sliding hole for sliding the sliding rod. A second motor for driving the screw to rotate is installed on one set of sliding boxes.

[0013] In one alternative: the rotating assembly includes a gear ring and a gear, the inner wall of the gear ring is fixedly connected to the outer wall of the rotating disk, the gear meshes with the gear ring, and a first motor for driving the gear to rotate is installed on one side of the movable box.

[0014] In one alternative: a protective cylinder is provided at the bottom of the rotating disk, and a fixing frame is fixedly connected to both sides of the protective cylinder, with the end of the fixing frame away from the protective cylinder mounted on the mobile box.

[0015] In one alternative: a limiting block is fixedly connected to the top of the rotating disk, and a limiting groove is provided on the inner wall of the movable box for sliding in conjunction with the limiting block.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model comprises a movable box, a rotating disk, a support frame, a cutting tool, a drive assembly, a moving assembly, and a rotating assembly. The drive assembly can drive two sets of support frames to move the cutting tool towards each other at the bottom of the rotating disk, thereby adjusting the required thread depth of the two bridge arms. The rotating assembly can drive the two sets of cutting tools to rotate and process the two bridge arms. The moving assembly drives the movable box to move, which facilitates processing, improves processing efficiency, and slows down the wear rate of the cutting tool.

[0018] This invention, by setting a protective cylinder and a fixing frame, places the ends of the two bridge arms inside the protective cylinder, which can prevent debris from flying out during processing and facilitate cleaning. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure where the gear is located in this utility model.

[0021] Figure 3 This is a structural schematic diagram of the location of the guide rod in this utility model.

[0022] Figure 4 This is a schematic diagram of the rotating disk in this utility model.

[0023] In the diagram: 11. Moving box; 12. Rotating disk; 13. Support frame; 14. Moving seat; 15. Cutting tool; 16. Moving groove; 17. Rotating rod; 18. Sliding seat; 19. Guide rod; 20. Guide plate; 21. Guide groove; 22. Electro-hydraulic rod; 23. Gear ring; 24. Gear; 25. First motor; 26. Fixed frame; 27. Protective cylinder; 28. Fixed plate; 29. ​​Sliding box; 30. Screw; 31. Second motor. Detailed Implementation

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[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] Please see Figures 1-4 In this embodiment, a two-bridge arm external thread processing device includes a movable box 11, a rotating disk 12 rotatably connected to the bottom of the movable box 11, and two sets of sliding boxes 29. The device is characterized in that: two sets of support frames 13 are slidably connected to the bottom of the rotating disk 12, and cutting tools 15 are installed on the support frames 13. The movable box 11 is provided with a drive assembly for adjusting the sliding of the two sets of support frames 13.

[0027] The drive assembly includes a movable seat 14 and a movable groove 16. The movable seat 14 is fixedly connected to the top of the support frame 13. The movable groove 16 is opened on the rotating disk 12. The movable seat 14 is slidably connected in the movable groove 16. A guide rod 19 is fixedly connected to the top of the rotating disk 12. A sliding seat 18 is slidably connected to the guide rod 19. Rotating rods 17 are rotatably connected to both sides of the sliding seat 18. The end of the rotating rod 17 away from the sliding seat 18 is rotatably connected to the top of the movable seat 14. A sliding component is provided in the movable box 11 for driving the sliding seat 18 to move up and down. The sliding component drives the sliding seat 18 to slide on the guide rod 19. As the sliding rotating rod 17 of the sliding seat 18 rotates, it drives the movable seat 14 to slide in the movable groove 16. The two sets of movable seats 14 drive the two sets of support frames 13 to move closer to each other. As the two sets of support frames 13 move closer, the two sets of cutting tools 15 move closer to each other, which facilitates the adjustment of the thread depth.

[0028] The sliding box 29 is provided with a moving component for driving the moving box 11 to slide up and down, and the moving box 11 is provided with a rotating component for driving the rotating disk 12 to rotate.

[0029] The sliding component includes two sets of guide plates 20 and guide grooves 21. The two sets of guide plates 20 are rotatably connected to one set of sliding seats 18. The two sets of guide grooves 21 are respectively opened on both sides of the inner wall of the movable box 11. The guide plates 20 are slidably connected in the guide grooves 21. Two sets of electro-hydraulic rods 22 are installed on the top of the movable box 11. The power output ends of the two sets of electro-hydraulic rods 22 are respectively connected to the top of the two sets of guide plates 20. The electro-hydraulic rods 22 start and retract, driving the guide plates 20 to slide upward in the guide grooves 21, and driving the sliding seats 18 to slide on the guide rods 19. The sliding seats 18 can be driven to slide on the guide rods 19, thereby adjusting the cutting tool 15.

[0030] The moving assembly includes a screw 30 and a fixed plate 28. The screw 30 is rotatably connected to a set of sliding boxes 29. The fixed plate 28 is fixedly connected to the top of the moving box 11. The two ends of the fixed plate 28 are slidably connected to two sets of sliding boxes 29 respectively. A sliding rod is fixedly connected to another set of sliding boxes 29. The fixed plate 28 has a threaded hole for threaded connection with the screw 30 and a sliding hole for sliding the sliding rod. A second motor 31 for driving the screw 30 to rotate is installed on one set of sliding boxes 29. The second motor 31 starts and drives the screw 30 to rotate. As the screw 30 rotates, it drives the fixed plate 28 to slide in the sliding box 29, causing the fixed plate 28 to move downward. This can drive the moving box 11 to move up and down, thereby driving the cutting tool 15 to move, which facilitates the machining of the two bridge arms.

[0031] The rotating assembly includes a gear ring 23 and a gear 24. The inner wall of the gear ring 23 is fixedly connected to the outer wall of the rotating disk 12. The gear 24 meshes with the gear ring 23. A first motor 25 for driving the gear 24 to rotate is installed on one side of the moving box 11. The first motor 25 starts and drives the gear 24 to rotate. As the gear ring 23 meshes with the gear 24, the rotating disk 12 rotates. The rotating disk 12 drives the support frame 13 and the cutting tool 15 to rotate to process the ends of the two bridge arms, which is convenient for processing.

[0032] The bottom of the rotating disk 12 is provided with a protective cylinder 27. Both sides of the protective cylinder 27 are fixedly connected with a fixing frame 26. The end of the fixing frame 26 away from the protective cylinder 27 is installed on the moving box 11. By setting the protective cylinder 27 and the fixing frame 26, the ends of the two bridge arms are located inside the protective cylinder 27. During the processing, it can prevent the debris from jumping out and facilitate cleaning.

[0033] A limiting block is fixedly connected to the top of the rotating disk 12, and a limiting groove is provided on the inner wall of the movable box 11 for sliding in conjunction with the limiting block. By setting the limiting block and the limiting groove, the rotation of the rotating disk 12 can be guided and supported.

[0034] The working principle of this utility model is as follows: In use, the two bridge arms are first fixed using an existing fixing device. The end of the two bridge arms requiring thread machining is located at the bottom of the movable box 11. The axis of the two bridge arms is aligned with the axis of the rotating disk 12. The electric hydraulic rod 22 starts and retracts, driving the guide plate 20 to slide upwards in the guide groove 21, and causing the sliding seat 18 to slide on the guide rod 19. As the sliding rotating rod 17 of the sliding seat 18 rotates, it drives the movable seat 14 to slide in the movable groove 16. The two sets of movable seats 14 drive the two sets of support frames 13 to move closer together. As the two sets of support frames 13 move closer, the two sets of cutting tools 15 move closer together, facilitating adjustment of the thread depth. The second motor 31 starts and drives the screw 30 to rotate. As the screw 30 rotates, the fixed plate 28 slides within the sliding box 29, causing the fixed plate 28 to move downwards. The first motor 25 starts and drives the gear 24 to rotate. As the gear ring 23 meshes with the gear 24, the rotating disk 12 rotates. The rotating disk 12 drives the support frame 13 and the cutting tool 15 to rotate to process the ends of the two bridge arms, facilitating processing. During the rotation of the cutting tool 15, the second motor 31 drives the screw 30 to rotate, causing the fixed plate 28 to move the moving box 11 downwards, facilitating the cutting tool 15 to perform thread processing on the two bridge arms. This reduces the need for manual adjustment of the cutting tool 15 to the ends of the two bridge arms, improving processing efficiency. Setting up two sets of cutting tools 15 can reduce tool consumption costs.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A two-bridge-arms outer thread machining device, comprising a moving box (11), a rotating disc (12) rotatably connected to the bottom of the moving box (11), and two groups of sliding boxes (29), characterized in that: The bottom of the rotating disk (12) is slidably connected to two sets of support frames (13), and a cutting tool (15) is installed on the support frame (13). The movable box (11) is provided with a drive assembly for adjusting the sliding of the two sets of support frames (13). The driving assembly includes a movable seat (14) and a movable slot (16). The movable seat (14) is fixedly connected to the top of the support frame (13). The movable slot (16) is opened on the rotating disk (12). The movable seat (14) is slidably connected in the movable slot (16). A guide rod (19) is fixedly connected to the top of the rotating disk (12). A sliding seat (18) is slidably connected to the guide rod (19). Rotating rods (17) are rotatably connected to both sides of the sliding seat (18). The end of the rotating rod (17) away from the sliding seat (18) is rotatably connected to the top of the movable seat (14). A sliding component for driving the sliding seat (18) to move up and down is provided in the movable box (11). The sliding box (29) is provided with a moving component for driving the moving box (11) to slide up and down, and the moving box (11) is provided with a rotating component for driving the rotating disk (12) to rotate.

2. The device according to claim 1, wherein: The sliding component includes two sets of guide plates (20) and guide grooves (21). The two sets of guide plates (20) are rotatably connected to a set of sliding seats (18). The two sets of guide grooves (21) are respectively opened on both sides of the inner wall of the movable box (11). The guide plates (20) are slidably connected in the guide grooves (21). The top of the movable box (11) is equipped with two sets of electric hydraulic rods (22). The power output ends of the two sets of electric hydraulic rods (22) are respectively connected to the top of the two sets of guide plates (20).

3. The apparatus of claim 1, wherein: The moving component includes a screw (30) and a fixed plate (28). The screw (30) is rotatably connected to a set of sliding boxes (29). The fixed plate (28) is fixedly connected to the top of the moving box (11). The two ends of the fixed plate (28) are slidably connected to two sets of sliding boxes (29). A sliding rod is fixedly connected to another set of sliding boxes (29). The fixed plate (28) has a threaded hole for threaded connection with the screw (30) and a sliding hole for sliding the sliding rod. A second motor (31) for driving the screw (30) to rotate is installed on one set of sliding boxes (29).

4. The apparatus of claim 1, wherein: The rotating assembly includes a gear ring (23) and a gear (24). The inner wall of the gear ring (23) is fixedly connected to the outer wall of the rotating disk (12). The gear (24) meshes with the gear ring (23). A first motor (25) for driving the gear (24) to rotate is installed on one side of the moving box (11).

5. The apparatus of claim 1, wherein: The bottom of the rotating disk (12) is provided with a protective cylinder (27), and a fixing frame (26) is fixedly connected to both sides of the protective cylinder (27). The end of the fixing frame (26) away from the protective cylinder (27) is installed on the mobile box (11).

6. The apparatus of claim 1, wherein: The top of the rotating disk (12) is fixedly connected to a limiting block, and the inner wall of the movable box (11) is provided with a limiting groove for sliding in conjunction with the limiting block.