A fixing tool for machining a universal joint
By designing a universal joint fixing fixture with a V-shaped clamping block and an electric drive system, the problem of insufficient adaptability of traditional fixtures was solved, enabling convenient fixing and precise alignment of universal joints of different diameters, thus improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANYANG AUTOMOBILE & CYCLE GROUP CHINA
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional universal joint fixing fixtures cannot be adapted to universal joints of different diameters, requiring frequent changes of fixtures and causing inconvenience in fixing.
A fixture for universal joint machining was designed, which adopts a V-shaped clamping block structure. The clamping block spacing can be adjusted by adjusting the screw and the limiting groove to accommodate universal joints of different diameters. It is also equipped with an electric telescopic rod and a drive motor to drive the moving plate to achieve precise alignment and fixation of the workpiece.
It enables convenient fixing and precise alignment of universal joints of different diameters, improves the adaptability and operational efficiency of fixing fixtures, and simplifies the clamping process.
Smart Images
Figure CN224587534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of universal joint processing technology, and in particular to a fixing fixture for processing universal joints. Background Technology
[0002] A universal joint, also known as a universal connector, is a mechanical component that enables power transmission at varying angles. It is used in locations where the direction of the drive shaft needs to be changed. It is the "joint" component of the universal transmission device in a car's drive system. The combination of a universal joint and a drive shaft is called a universal joint transmission device. When drilling holes in a universal joint, a fixing fixture is required to secure the universal joint.
[0003] Traditional universal joint fixing fixtures have many drawbacks. Most fixtures have a single clamping structure, such as the common semi-circular clamp. Because the inner curvature of the semi-circular clamp is fixed, it can only fit universal joints of a specific size range. When dealing with universal joints of different diameters, it is often necessary to frequently change the entire set of clamps, which makes it inconvenient to fix universal joints of different diameters. Therefore, a fixing fixture that can adapt to universal joints of different diameters is needed. Utility Model Content
[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a fixing fixture for processing universal joints, which can solve the problem of inconvenience in fixing universal joints of different diameters.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a fixed fixture for processing universal joints, including a processing table, a fixed frame fixedly installed on one side of the processing table, a punching machine body fixedly installed on the fixed frame, a collection groove and a sliding groove opened at the top of the processing table, the collection groove being located on one side of the sliding groove and below the punching machine body, a movable plate slidably connected to the top of the processing table, two fixed plates fixedly installed at the top of the movable plate, and a clamping fixture assembly fixedly installed at the opposite ends of the two fixed plates, the clamping fixture assembly including a first clamping block and a second clamping block, the second clamping block being located above the first clamping block, the clamping ends of the first and second clamping blocks being inclined, the clamping ends of the first and second clamping blocks being V-shaped in general, a threaded through hole opened at the top of the second clamping block, an adjusting screw being threadedly connected inside the threaded through hole, the bottom end of the adjusting screw being rotatably connected to the top of the first clamping block, and a turntable handle fixedly installed at the top of the adjusting screw.
[0006] Preferably, three anti-slip strips are fixedly installed on the inclined end of the first clamping block.
[0007] Preferably, the top of the first clamping block is fixedly connected to two limiting rods, which are located on both sides of the adjusting screw. The second clamping block has two limiting grooves inside, which are located on both sides of the adjusting screw. The inside of the two limiting grooves is slidably connected to the outer surface of the corresponding limiting rod.
[0008] Preferably, there are two fixture components, both of which have the same structure and are respectively installed on opposite ends of two fixed plates.
[0009] Preferably, electric telescopic rods are fixedly installed at the opposite ends of the two fixed plates, and the output ends of the two electric telescopic rods slide through the interior of the corresponding fixed plates. The opposite ends of the two electric telescopic rods are fixedly connected to the opposite ends of the two first clamping blocks.
[0010] Preferably, a protective pad is fixedly installed on the top of the movable plate, and the protective pad is located on one side of the two fixture components.
[0011] Preferably, a threaded rod is rotatably mounted inside the chute, and a slider is threaded onto the outer surface of the threaded rod. The top end of the slider is fixedly connected to the bottom end of the movable plate.
[0012] Preferably, a drive motor is fixedly installed on one side of the processing table, and the output end of the drive motor rotates through the interior of the slide groove and is fixedly connected to one end of the threaded rod.
[0013] Preferably, the inside of the collection tank slides through one side of the processing table, the inner wall of the collection tank is sloping, and a collection frame is slidably installed inside the collection tank.
[0014] Compared with the prior art, the beneficial effects of this utility model are: the universal joint processing fixture is designed with the clamping ends of the first clamping block and the second clamping block in a V shape, which can easily clamp and fix the universal joint. At the same time, the vertical distance between the first clamping block and the second clamping block can be adjusted, so as to facilitate the fixing of universal joints of different diameters. The operation is simple and convenient, which can improve the adaptability of the fixture assembly. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of a fixing fixture for processing a universal joint according to the present invention; Figure 2 For the present utility model Figure 1 Enlarged view of point A in the image; Figure 3 This is a schematic diagram of the first clamping block structure of this utility model; Figure 4 This is a plan view of the limiting groove of this utility model; Figure 5 This is a schematic diagram of the anti-slip strip structure of this utility model.
[0016] Reference numerals in the attached drawings: 1. Processing table; 2. Fixing frame; 3. Drilling machine body; 4. Collection groove; 5. Collection frame; 6. Slide groove; 7. Moving plate; 8. Protective pad; 9. Threaded rod; 10. Slider; 11. Drive motor; 12. Fixing plate; 13. Electric telescopic rod; 14. First clamping block; 15. Second clamping block; 16. Threaded through hole; 17. Adjusting screw; 18. Turntable handle; 19. Limiting rod; 20. Limiting groove; 21. Anti-slip strip. Detailed Implementation
[0017] This section will describe in detail the specific embodiments of this utility model. Preferred embodiments of this utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, enabling a person to intuitively and vividly understand each technical feature and overall technical solution of this utility model. However, they should not be construed as limiting the scope of protection of this utility model. In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limiting this utility model.
[0018] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the order of the indicated technical features. In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution.
[0019] Please see Figure 1-5This utility model provides a technical solution: a fixed fixture for processing universal joints, including a processing table 1. A fixing frame 2 is fixedly installed on one side of the processing table 1, and a punching machine body 3 is fixedly installed on the fixing frame 2. A collection groove 4 and a sliding groove 6 are opened at the top of the processing table 1. The collection groove 4 is located on one side of the sliding groove 6 and below the punching machine body 3. A movable plate 7 is slidably connected to the top of the processing table 1. Two fixing plates 12 are fixedly installed at the top of the movable plate 7. Clamping tools are provided at the opposite ends of the two fixing plates 12. The fixture assembly includes a first clamping block 14 and a second clamping block 15. The second clamping block 15 is located above the first clamping block 14. The clamping ends of both the first clamping block 14 and the second clamping block 15 are inclined. The clamping ends of the first clamping block 14 and the second clamping block 15 are V-shaped in general. A threaded through hole 16 is provided at the top of the second clamping block 15. An adjusting screw 17 is threadedly connected inside the threaded through hole 16. The bottom end of the adjusting screw 17 is rotatably connected to the top end of the first clamping block 14. A turntable handle 18 is fixedly installed at the top end of the adjusting screw 17.
[0020] Three anti-slip strips 21 are fixedly installed on the inclined end of the first clamping block 14. Two limiting rods 19 are fixedly connected to the top of the first clamping block 14, located on both sides of the adjusting screw 17. Two limiting grooves 20 are formed inside the second clamping block 15, located on both sides of the adjusting screw 17, and the interior of each limiting groove 20 is slidably connected to the outer surface of the corresponding limiting rod 19. There are two fixture tooling assemblies, and both fixture tooling assemblies have identical structures.
[0021] Electric telescopic rods 13 are fixedly installed on the opposite ends of the two fixed plates 12. The output ends of the two electric telescopic rods 13 slide through the interior of the corresponding fixed plates 12, and the opposite ends of the two electric telescopic rods 13 are fixedly connected to the opposite ends of the two first clamping blocks 14. A protective pad 8 is fixedly installed on the top of the movable plate 7, and the protective pad 8 is located on one side of the two clamping tooling assemblies.
[0022] A threaded rod 9 is rotatably mounted inside the slide groove 6. A slider 10 is threaded onto the outer surface of the threaded rod 9, and the top end of the slider 10 is fixedly connected to the bottom end of the moving plate 7. A drive motor 11 is fixedly mounted on one side of the processing table 1. The output end of the drive motor 11 rotatably passes through the interior of the slide groove 6 and is fixedly connected to one end of the threaded rod 9. The collection trough 4 slides through one side of the processing table 1. The inner wall of the collection trough 4 is inclined, and a collection frame 5 is slidably mounted inside the collection trough 4.
[0023] Processing table 1: The basic load-bearing component of the tooling, providing an installation support platform for each component. The top has a collection groove and a slide for integrating processing, collection and transfer functions, ensuring the stability of the overall structure; Fixed bracket 2: It is fixedly installed on one side of the processing table 1. Its main function is to fix and support the punching machine body 3, so as to ensure the stability of the punching machine during processing and avoid the impact of vibration on processing accuracy. Drilling machine body 3: Installed on the fixed frame 2, located above the collection tank 4, it is the core processing component, used to drill holes in the fixed universal joint to meet the processing requirements of the workpiece, and can move up and down on its own. Collection trough 4: Located at the top of the processing table 1 and below the punching machine body 3, with an inclined inner wall, it is used to receive the waste generated during processing and guide the waste to slide into the collection frame 5 for easy collection. Collection box 5: It is slidably installed inside the collection tank 4 and runs through one side of the processing table 1. It is used to store the waste guided by the collection tank 4. It can be pulled out for cleaning to avoid the accumulation of waste and affect the processing. Slide 6: It is located at the top of the processing table 1, and a threaded rod 9 is rotatably installed inside it to provide a sliding track for the slider 10. The linear movement of the moving plate 7 is achieved in conjunction with the threaded rod. The movable plate 7 is slidably connected to the top of the processing table 1, and its bottom end is fixed to the slider 10. The top end is equipped with a fixed plate 12 and a protective pad 8, which are used to support the universal joint and the clamping assembly to realize the transfer of the workpiece. Protective pad 8: Fixed to the top of the moving plate 7 and located on one side of the two clamping assemblies, the material has protective properties to prevent the universal joint from directly contacting the moving plate and causing surface scratches or indentations. Threaded rod 9: Rotatably installed in the slide groove 6, one end is connected to the output end of the drive motor 11, and the outer surface is fitted with the slider 10. The motor power is converted into the sliding power of the slider by rotation. Slider 10: It is threaded onto the outer surface of the threaded rod 9, and its top end is fixed to the moving plate 7. It slides along the slide groove 6 under the drive of the threaded rod, which drives the moving plate and the workpiece to move synchronously. Drive motor 11: Fixed on one side of the processing table 1, with its output end connected to the threaded rod 9, providing power for the rotation of the threaded rod and serving as the power source for controlling the movement of the workpiece; Fixed plate 12: Fixed to the top of the movable plate 7, there are two in total, used to install the electric telescopic rod 13 and the clamping tooling assembly, and to provide an installation base for the clamping mechanism; Electric telescopic rod 13: installed at the opposite ends of two fixed plates 12, with the output end passing through the fixed plates and connected to the first clamping block 14. The first clamping block is moved laterally by telescopic drive to achieve lateral positioning of the workpiece. First clamping block 14: It belongs to the clamping assembly and is connected to the output end of the electric telescopic rod 13. The clamping end is inclined and equipped with anti-slip strip 21. The top end is connected to the limiting rod 19. It cooperates with the second clamping block to achieve workpiece clamping. Second clamping block 15: Located above the first clamping block 14, it belongs to the clamping assembly, with threaded through hole 16 and limiting groove 20. It cooperates with the first clamping block and clamps the workpiece by longitudinal movement, adapting to different sizes. Threaded through hole 16: It is opened at the top of the second clamping block 15 and is threadedly connected to the adjusting screw 17, so as to convert the rotational motion of the adjusting screw into the longitudinal linear motion of the second clamping block; Adjusting screw 17: The bottom end is rotatably connected to the first clamping block 14, and the top end is equipped with a turntable handle 18. The second clamping block is moved by rotation, and the clamping block spacing is adjusted to fit the workpiece. Turntable handle 18: Fixed to the top of the adjusting screw 17, it increases the operating torque and makes it convenient for the operator to rotate the adjusting screw to achieve convenient adjustment of the clamping block spacing; Limiting rod 19: Fixed to the top of the first clamping block 14 and located on both sides of the adjusting screw 17, it slides with the limiting groove 20 to prevent the second clamping block from rotating with the adjusting screw and ensure stable longitudinal movement; Limiting groove 20: It is formed in the second clamping block 15 and located on both sides of the adjusting screw 17. It is slidably connected with the limiting rod 19 and plays a guiding and limiting role in the movement of the second clamping block. Anti-slip strip 21: fixed to the inclined end of the first clamping block 14, there are three in total, which can increase the friction between the clamping block and the universal joint, prevent the workpiece from slipping during processing, and improve the clamping stability.
[0024] Furthermore, firstly, the operator rotates the adjusting screw 17. Due to the limiting design of the limiting groove 20 and the limiting rod 19, the rotational motion of the adjusting screw 17 is converted into the longitudinal linear motion of the second clamping block 15. Then, the second clamping block 15 moves upward along the direction of the limiting rod 19. Next, the vertical distance between the first clamping block 14 and the second clamping block 15 is adjusted. After the distance between the first clamping block 14 and the second clamping block 15 is adjusted, it can be adjusted according to the outer surface diameter of the universal joint.
[0025] Next, the universal joint is placed between two clamping fixture components, with the end of the universal joint to be drilled protruding above the collection groove 4. Then, the two electric telescopic rods 13 are activated, which drive the two first clamping blocks 14 to move relative to each other. The two first clamping blocks 14 then drive the corresponding second clamping blocks 15 to clamp the outer surface of the universal joint, thus facilitating the fixing of universal joints of different diameters.
[0026] Furthermore, since the clamping ends of the first clamping block and the second clamping block are arranged in a V shape, it is convenient to clamp and fix the universal joint. At the same time, the vertical distance between the first clamping block 14 and the second clamping block 15 can be adjusted, so as to facilitate the fixing of universal joints of different diameters. The operation is simple and convenient, which can improve the adaptability of the fixing tooling assembly.
[0027] Furthermore, after clamping is completed, the drive motor 11 is started to drive the threaded rod 9 to rotate. Then the threaded rod 9 drives the slider 10 to slide. Then the slider 10 drives the moving plate 7 to move. Then the moving plate 7 drives the two fixture tooling components to move relative to each other, so that the part to be processed of the universal joint is precisely aligned with the processing head of the punching machine body 3, realizing rapid alignment of the processing position.
[0028] Next, the punching machine body 3 is started to punch a hole at one end of the universal joint. When the punching machine body 3 punches the universal joint, the generated waste (such as metal shavings) falls off under the action of gravity. Then the waste will fall directly into the collection tank 4. The inner wall of the collection tank 4 is designed as a slope, which can guide the waste to slide along the slope to the collection frame 5. When the waste accumulates to a certain amount, the collection frame 5 can be pulled out from one side of the processing table 1 to achieve rapid cleaning of waste and avoid waste accumulation.
[0029] Example 1: (Adding an anti-slip structure) When clamping a relatively smooth universal joint, three anti-slip strips 21 can be added to the inclined surface of the first clamping block 14, as shown in the reference. Figure 5 The three anti-slip strips 21 can increase the friction between the clamping surface and the universal joint, prevent the universal joint from shifting due to vibration during processing, and further improve clamping stability.
[0030] Example 2: (Adding a protective structure) When fine protection is required on the outer surface of the universal joint, a protective structure (i.e., protective pad 8) can be added to the moving plate 7. Protective pad 8 is made of high-elasticity polyurethane material with a Shore hardness of 60-70D and a thickness of 5mm. (See reference...) Figure 1 Next, the universal joint to be processed is placed on the protective pad 8 at the top of the moving plate 7. The protective pad 8 can prevent the universal joint from directly contacting the moving plate 7 and causing surface scratches.
[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A fixed fixture for machining universal joints, comprising a machining table (1), characterized in that: A fixed frame (2) is fixedly installed on one side of the processing table (1), and a punching machine body (3) is fixedly installed on the fixed frame (2). A collection groove (4) and a slide groove (6) are provided at the top of the processing table (1). The collection groove (4) is located on one side of the slide groove (6) and below the punching machine body (3). A movable plate (7) is slidably connected to the top of the processing table (1). Two fixed plates (12) are fixedly installed at the top of the movable plate (7). A fixture assembly is provided at the opposite ends of the two fixed plates (12). The fixture assembly includes a first clamping block (1). 4) Second clamping block (15) The second clamping block (15) is located above the first clamping block (14). The clamping ends of the first clamping block (14) and the second clamping block (15) are both inclined. The clamping ends of the first clamping block (14) and the second clamping block (15) are V-shaped as a whole. The top of the second clamping block (15) is provided with a threaded through hole (16). The threaded through hole (16) is connected to an adjusting screw (17) by an internal thread. The bottom end of the adjusting screw (17) is rotatably connected to the top end of the first clamping block (14). The top end of the adjusting screw (17) is fixedly installed with a turntable handle (18).
2. The fixing fixture for machining a universal joint according to claim 1, characterized in that: Three anti-slip strips (21) are fixedly installed on the inclined end of the first clamping block (14).
3. A fixing fixture for machining a universal joint according to claim 1 or 2, characterized in that: The top of the first clamping block (14) is fixedly connected to two limiting rods (19), which are located on both sides of the adjusting screw (17). The second clamping block (15) has two limiting grooves (20) inside, which are located on both sides of the adjusting screw (17). The interior of the two limiting grooves (20) is slidably connected to the outer surface of the corresponding limiting rod (19).
4. The fixing fixture for machining a universal joint according to claim 1, characterized in that: There are two fixture tooling assemblies, and the two fixture tooling assemblies have the same structure.
5. A fixing fixture for machining a universal joint according to claim 1 or 2, characterized in that: Electric telescopic rods (13) are fixedly installed on the opposite ends of the two fixed plates (12). The output ends of the two electric telescopic rods (13) slide through the interior of the corresponding fixed plates (12). The opposite ends of the two electric telescopic rods (13) are fixedly connected to the opposite ends of the two first clamping blocks (14).
6. The fixing fixture for machining a universal joint according to claim 1, characterized in that: A protective pad (8) is fixedly installed on the top of the movable plate (7), and the protective pad (8) is located on one side of the two fixture components.
7. The fixing fixture for machining a universal joint according to claim 1, characterized in that: The slide (6) is rotatably mounted with a threaded rod (9), and a slider (10) is threadedly sleeved on the outer surface of the threaded rod (9). The top end of the slider (10) is fixedly connected to the bottom end of the moving plate (7).
8. The fixing fixture for machining a universal joint according to claim 7, characterized in that: A drive motor (11) is fixedly installed on one side of the processing table (1). The output end of the drive motor (11) rotates through the interior of the slide groove (6) and is fixedly connected to one end of the threaded rod (9).
9. A fixing fixture for machining a universal joint according to claim 1 or 7, characterized in that: The inside of the collection tank (4) slides through one side of the processing table (1), the inner wall of the collection tank (4) is inclined, and a collection frame (5) is slidably installed inside the collection tank (4).