Coupling machining positioning tool

By designing a coupling machining positioning fixture with adjustment and clamping mechanisms, the problem of existing positioning fixtures being unable to quickly adjust the position of the limit sleeve was solved, enabling rapid adaptive machining of couplings of different lengths and angles, and improving machining efficiency and clamping stability.

CN224575538UActive Publication Date: 2026-07-31ZHONGLU RAIL EQUIP (CHANGSHU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGLU RAIL EQUIP (CHANGSHU) CO LTD
Filing Date
2025-09-19
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing positioning fixtures cannot quickly and easily adjust the position of the limit sleeve, which makes it impossible to quickly and easily assemble and process couplings of different lengths and angles, thus reducing work efficiency.

Method used

A coupling machining and positioning fixture including an adjustment mechanism and a clamping mechanism was designed. The fixture uses a motor to drive a bidirectional threaded rod and an electric telescopic rod to quickly adjust the spacing, height and angle of the limiting sleeve, and the clamping mechanism enables quick clamping and fixing of couplings of different sizes.

Benefits of technology

It enables rapid adaptability machining of couplings of different lengths and angles, improves the versatility of tooling and machining efficiency, and enhances the stability and accuracy of clamping.

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Abstract

This utility model belongs to the field of coupling processing technology, and particularly relates to a coupling processing positioning fixture, including a base plate and a support base. A positioning structure is provided on the top of the base plate. The positioning structure includes an adjustment mechanism and a clamping mechanism. The adjustment mechanism includes a motor, a bidirectional threaded rod, a moving plate, a connecting plate, and an electric telescopic rod. The output end of the motor is connected to one end of the bidirectional threaded rod. This coupling processing positioning fixture enables quick and convenient adjustment of the distance between two limiting sleeves, allowing for the processing of couplings of different lengths without changing the fixture. It also allows for quick and convenient adjustment of the height of the limiting sleeves, enabling the coupling to be processed at different heights. This facilitates operators in adjusting the coupling position according to the actual processing situation. Furthermore, it allows for quick and convenient adjustment of the angle of the limiting sleeves to meet the processing requirements of the coupling at different angles, increasing processing flexibility and improving the working efficiency of the positioning device.
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Description

Technical Field

[0001] This utility model relates to the field of coupling processing technology, specifically to a coupling processing positioning fixture. Background Technology

[0002] A coupling is a mechanical part used to connect rotating shafts in different mechanisms to transmit torque. It serves to buffer, dampen vibrations, and improve the dynamic performance of the shaft system. Sometimes it is also used to connect shafts with other parts (such as gears, pulleys, etc.). It is usually composed of two halves, which are connected by keys or tight fits and fastened to the two shaft ends. The two halves are then connected in some way. When machining couplings, positioning fixtures are required for assembly.

[0003] Existing positioning fixtures typically involve placing the coupling into a limiting sleeve for assembly. However, in actual use, the position of the limiting sleeve cannot be adjusted quickly and easily, resulting in difficulties in assembling couplings of different lengths and adjusting the angle of the limiting sleeve, thus reducing the working efficiency of the positioning fixture.

[0004] Therefore, we urgently need to provide a machining and positioning fixture for couplings. Utility Model Content

[0005] The purpose of this invention is to provide a machining and positioning fixture for couplings to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coupling machining and positioning fixture, comprising a base plate and a support base, wherein a positioning structure is provided above the base plate; The positioning structure includes an adjustment mechanism and a clamping mechanism; The adjustment mechanism includes a motor, a bidirectional threaded rod, a movable plate, a connecting plate, and an electric telescopic rod. The output end of the motor is connected to one end of the bidirectional threaded rod. The outer wall of the bidirectional threaded rod is threadedly connected to the inner wall of the movable plate. The top of the movable plate is connected to the bottom of the connecting plate. The inner side of the connecting plate is connected to the bottom of the electric telescopic rod. An adjustment plate is fixedly installed on the top of the electric telescopic rod. A support plate is fixedly installed on one side of the adjustment plate. An installation plate is fixedly installed on the top of the support plate. A movable rod is rotatably connected to the inner wall of the installation plate. A fixing plate is fixedly installed on the outer wall of the movable rod. A limit plate is fixedly installed on one side of the installation plate. A fixing bolt is threadedly connected to the inner wall of the movable rod.

[0007] A further improvement is that the top of the support base is provided with a movable groove, the bottom of the movable plate is slidably connected to the inner wall of the movable groove, and there are two connecting plates, which are symmetrically distributed on the top of the support base. This allows for quick and convenient adjustment of the distance between the two limiting sleeves, thereby enabling better processing of couplings of different lengths.

[0008] A further improvement is that an adjustment groove is provided on one side of the connecting plate, the outer wall of the adjustment plate is slidably connected to the inner wall of the adjustment groove, the support plate is L-shaped, and there are four support plates, which are symmetrically distributed on both sides of the adjustment plate, thereby enabling quick and convenient adjustment of the height of the limiting sleeve, and thus enabling better processing.

[0009] A further improvement is that there are two movable rods, which are symmetrically distributed between the two mounting plates. An adjustment hole is opened on one side of the limiting plate, and one end of the fixing bolt is threaded to the inner wall of the adjustment hole, so that the angle of the limiting sleeve can be adjusted quickly and conveniently, thereby enabling better processing.

[0010] A further improvement is that the clamping mechanism includes a limiting sleeve, a threaded rod, a clamping plate, an anti-slip pad, and a bearing plate. The inner wall of the limiting sleeve is threadedly connected to the outer wall of the threaded rod. The bottom of the threaded rod is rotatably connected to the top of the clamping plate. The bottom of the clamping plate is connected to the top of the anti-slip pad. One side of the limiting sleeve is connected to one end of the bearing plate. A guide roller is rotatably connected to one side of the bearing plate.

[0011] A further improvement is that there are two limiting sleeves, which are symmetrically distributed above the support base. The clamping plate is arc-shaped, and there are several guide rollers, which are symmetrically distributed between the two bearing plates. This allows for quick and convenient clamping and fixing of couplings of different sizes, as well as better guidance and conveying, and thus better processing.

[0012] A further improvement is that the top of the base plate is connected to the bottom of the support base, one end of the support base is connected to one end of the motor, and the top of the fixing plate is connected to the bottom of the limiting sleeve.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This coupling machining positioning fixture, through an adjustment mechanism, enables quick and convenient adjustment of the distance between the two limiting sleeves, adapting to the machining needs of couplings of different lengths. Compared with traditional positioning fixtures, it can machine couplings of different lengths without changing the fixture, improving the versatility and machining efficiency of the fixture. Furthermore, the height of the limiting sleeves can be quickly and conveniently adjusted, allowing the coupling to be machined at different heights. This facilitates operators in adjusting the coupling position according to the actual machining situation. Simultaneously, the angle of the limiting sleeves can be quickly and conveniently adjusted to meet the machining requirements of the coupling at different angles, increasing machining flexibility and improving the working efficiency of the positioning device.

[0014] 2. This coupling machining and positioning fixture, through a clamping mechanism, enables quick and convenient clamping and fixing of couplings of different sizes. The anti-slip pad increases the friction between the clamping plate and the coupling, preventing slippage during machining; the bearing plate and guide rollers better guide and transport the coupling, improving the accuracy and stability of clamping and fixing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the adjustment mechanism of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the structure of the adjustment mechanism of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the structure of the adjustment mechanism of this utility model. Figure 3 ; Figure 6 This is a schematic diagram of the clamping mechanism of this utility model.

[0016] In the diagram: 1. Base plate; 2. Support base; 3. Adjustment mechanism; 301. Motor; 302. Bidirectional threaded rod; 303. Moving plate; 304. Connecting plate; 305. Electric telescopic rod; 306. Adjustment plate; 307. Support plate; 308. Mounting plate; 309. Movable rod; 310. Fixed plate; 311. Limiting plate; 312. Fixing bolt; 4. Clamping mechanism; 401. Limiting sleeve; 402. Threaded rod; 403. Clamping plate; 404. Anti-slip pad; 405. Bearing plate; 406. Guide roller. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-6 This utility model provides a technical solution: Example

[0019] A coupling machining and positioning fixture includes a base plate 1 and a support base 2, with a positioning structure provided on the top of the base plate 1; The positioning structure includes an adjustment mechanism 3 and a clamping mechanism 4; The adjustment mechanism 3 includes a motor 301, a bidirectional threaded rod 302, a movable plate 303, a connecting plate 304, and an electric telescopic rod 305. The output end of the motor 301 is connected to one end of the bidirectional threaded rod 302. The outer wall of the bidirectional threaded rod 302 is threadedly connected to the inner wall of the movable plate 303. The top of the movable plate 303 is connected to the bottom of the connecting plate 304. The inner side of the connecting plate 304 is connected to the bottom of the electric telescopic rod 305. An adjustment plate 306 is fixedly installed on the top of the electric telescopic rod 305. A support plate 307 is fixedly installed on one side of the adjustment plate 306. An installation plate 308 is fixedly installed on the top of the support plate 307. A movable rod 309 is rotatably connected to the inner wall of the installation plate 308. A fixing plate 310 is fixedly installed on the outer wall of the movable rod 309. A limit plate 311 is fixedly installed on one side of the installation plate 308. A fixing bolt 312 is threadedly connected to the inner wall of the movable rod 309. In this embodiment, the top of the support base 2 is provided with a movable groove, the bottom of the movable plate 303 is slidably connected to the inner wall of the movable groove, and there are two connecting plates 304. The connecting plates 304 are symmetrically distributed on the top of the support base 2, so that the distance between the two limiting sleeves 401 can be quickly and conveniently adjusted, thereby enabling better processing of couplings of different lengths. Furthermore, an adjustment groove is provided on one side of the connecting plate 304, and the outer wall of the adjustment plate 306 is slidably connected to the inner wall of the adjustment groove. The support plate 307 is L-shaped, and there are four support plates 307. The support plates 307 are symmetrically distributed on both sides of the adjustment plate 306, so that the height of the limiting sleeve 401 can be adjusted quickly and conveniently, thereby enabling better processing. Furthermore, there are two movable rods 309, which are symmetrically distributed between the two mounting plates 308. An adjustment hole is opened on one side of the limiting plate 311, and one end of the fixing bolt 312 is threaded to the inner wall of the adjustment hole, so that the angle of the limiting sleeve 401 can be adjusted quickly and conveniently, thereby enabling better processing.

[0020] When machining couplings is required, the operator places the coupling into the limiting sleeve 401 and uses the clamping mechanism 4 to quickly and easily clamp and fix couplings of different sizes. When machining couplings of different lengths is required, the motor 301 is started to drive the bidirectional threaded rod 302 to rotate. The rotation of the bidirectional threaded rod 302 drives the moving plate 303 to move, which in turn drives the connecting plate 304 to move. The movement of the connecting plate 304 indirectly drives the limiting sleeve 401 to move, thereby quickly and easily adjusting the distance between the two limiting sleeves 401, thus enabling better machining. At this time, the electric telescopic rod 305 is started to drive the adjusting plate 306 to slide inside the connecting plate 304. The sliding of the adjusting plate 306 drives the support plate 307 to move. The movement of the support plate 307 indirectly drives the movement of the limiting sleeve 401, thereby enabling quick and convenient adjustment of the height of the limiting sleeve 401. This allows the coupling to be processed at different heights, making it more convenient for operators to use. When it is necessary to adjust the angle of the limiting sleeve 401, the fixing bolt 312 is rotated to move it within the inner wall of the movable rod 309. The movement of the fixing bolt 312 allows it to be pulled out from one side of the limiting plate 311, thus removing the limiting fixation on the movable rod 309. At this time, pulling the limiting sleeve 401 to rotate drives the fixing plate 310 to rotate, which in turn drives the movable rod 309 to rotate. This allows for quick and convenient adjustment of the angle of the limiting sleeve 401, enabling the coupling to be processed at different angles, making it more convenient for operators to use. Example

[0021] Based on Embodiment 1, the clamping mechanism 4 includes a limiting sleeve 401, a threaded rod 402, a clamping plate 403, an anti-slip pad 404, and a bearing plate 405. The inner wall of the limiting sleeve 401 is threadedly connected to the outer wall of the threaded rod 402. The bottom of the threaded rod 402 is rotatably connected to the top of the clamping plate 403. The bottom of the clamping plate 403 is connected to the top of the anti-slip pad 404. One side of the limiting sleeve 401 is connected to one end of the bearing plate 405. A guide roller 406 is rotatably connected to one side of the bearing plate 405. In this embodiment, there are two limiting sleeves 401, which are symmetrically distributed above the support base 2. The clamping plate 403 is arc-shaped, and there are several guide rollers 406, which are symmetrically distributed between the two bearing plates 405. This allows for quick and convenient clamping and fixing of couplings of different sizes, as well as better guidance and conveying, and thus better processing. Furthermore, the top of the base plate 1 is connected to the bottom of the support base 2, one end of the support base 2 is connected to one end of the motor 301, and the top of the fixing plate 310 is connected to the bottom of the limiting sleeve 401.

[0022] When machining the coupling, the operator places the coupling into the limiting sleeve 401 and moves the clamping plate 403 by rotating the threaded rod 402. The clamping plate 403 moves to contact the coupling, thus quickly and conveniently clamping and fixing couplings of different sizes. The anti-slip pad 404 increases the friction between the clamping plate 403 and the coupling. The bearing plate 405 and guide roller 406 better guide and transport the coupling, thus achieving better clamping and fixing.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A coupling machining positioning tool, comprising a base plate (1) and a supporting seat (2), characterized in that: A positioning structure is provided above the base plate (1); The positioning structure includes an adjustment mechanism (3) and a clamping mechanism (4). The adjusting mechanism (3) includes a motor (301), a bidirectional threaded rod (302), a moving plate (303), a connecting plate (304), and an electric telescopic rod (305). The output end of the motor (301) is connected to one end of the bidirectional threaded rod (302). The outer wall of the bidirectional threaded rod (302) is threadedly connected to the inner wall of the moving plate (303). The top of the moving plate (303) is connected to the bottom of the connecting plate (304). The inner side of the connecting plate (304) is connected to the bottom of the electric telescopic rod (305). An adjusting plate (306) is fixedly installed on the top of the telescopic rod (305). A support plate (307) is fixedly installed on one side of the adjusting plate (306). An mounting plate (308) is fixedly installed on the top of the support plate (307). A movable rod (309) is rotatably connected to the inner wall of the mounting plate (308). A fixing plate (310) is fixedly installed on the outer wall of the movable rod (309). A limit plate (311) is fixedly installed on one side of the mounting plate (308). A fixing bolt (312) is threadedly connected to the inner wall of the movable rod (309).

2. The coupling machining positioning tooling of claim 1, wherein: The support base (2) has a movable groove at the top, and the bottom of the movable plate (303) is slidably connected to the inner wall of the movable groove. There are two connecting plates (304), which are symmetrically distributed on the top of the support base (2).

3. The coupling machining positioning tooling of claim 1, wherein: The connecting plate (304) has an adjustment groove on one side. The outer wall of the adjustment plate (306) is slidably connected to the inner wall of the adjustment groove. The support plate (307) is L-shaped. There are four support plates (307). The support plates (307) are symmetrically distributed on both sides of the adjustment plate (306).

4. The coupling machining positioning tooling of claim 1, wherein: There are two movable rods (309), which are symmetrically distributed between the two mounting plates (308). An adjustment hole is opened on one side of the limiting plate (311), and one end of the fixing bolt (312) is threaded to the inner wall of the adjustment hole.

5. The coupling machining positioning tooling of claim 1, wherein: The clamping mechanism (4) includes a limiting sleeve (401), a threaded rod (402), a clamping plate (403), an anti-slip pad (404), and a bearing plate (405). The inner wall of the limiting sleeve (401) is threadedly connected to the outer wall of the threaded rod (402). The bottom of the threaded rod (402) is rotatably connected to the top of the clamping plate (403). The bottom of the clamping plate (403) is connected to the top of the anti-slip pad (404). One side of the limiting sleeve (401) is connected to one end of the bearing plate (405). A guide roller (406) is rotatably connected to one side of the bearing plate (405).

6. The coupling machining positioning tooling of claim 5, wherein: There are two limiting sleeves (401), which are symmetrically distributed above the support base (2). The clamping plate (403) is arc-shaped. There are several guide rollers (406), which are symmetrically distributed between the two bearing plates (405).

7. The coupling machining positioning tooling of claim 1, wherein: The bottom plate (1) top and support seat (2) bottom are connected with each other, one end of the support seat (2) and one end of the motor (301) are connected with each other, and the top of the fixed plate (310) and the bottom of the limiting sleeve (401) are connected with each other.