A cylinder bottom stop collar clamp

Abstract

The utility model discloses a kind of cylinder bottom vehicle stop mouth clamps, belong to pressure oil cylinder processing technical field, including clamp table, the top of clamp table is equipped with hydraulic oil cylinder bottom part, the inside of clamp table is opened with movable cavity, two movable plates are slidably arranged in movable cavity, the both sides of movable plate are fixedly connected with fixed plate, connecting seat is fixedly connected between fixed plate, the inside of clamp table is equipped with adjusting piece for controlling the movement of two movable plates, the opposite surface of two connecting seats is respectively equipped with detachable clamping seat, for clamping and fixing hydraulic oil cylinder bottom part, by setting movable cavity in the inside of clamp table, and two movable plates with fixed plate and connecting seat are slidably configured in movable cavity, cooperate adjusting piece for controlling the movement of two movable plates, the spacing between two connecting seats can be flexibly adjusted, so as to adapt to different size specifications of hydraulic oil cylinder bottom part, improve the versatility of clamp.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder processing technology, and in particular to a cylinder bottom machining stop fixture. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device, eliminates transmission backlash, and provides smooth movement, thus finding wide application in the hydraulic systems of various machines. The output force of a hydraulic cylinder is directly proportional to the effective area of ​​the piston and the pressure difference between its two sides. A hydraulic cylinder basically consists of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a cushioning device, and a venting device. The cushioning and venting devices are optional depending on the specific application, while the other devices are essential.

[0003] In existing technologies, when machining the stop surface of a hydraulic cylinder bottom component, a lathe fixture is typically used to securely clamp and fix the component to ensure machining accuracy and prevent displacement during processing. However, in practical applications, most existing lathe fixtures lack flexibility and can only effectively clamp cylinder bottom components of specific shapes. When machining the stop surface of irregularly shaped cylinder bottom components, existing fixtures often cannot provide suitable clamping methods due to the complexity and variety of shapes and sizes, leading to difficulties in guaranteeing machining quality. This necessitates changing the fixture when machining different shapes of cylinder bottom components. However, most fixtures on the market are fixedly connected to the lathe, making disassembly and replacement extremely cumbersome. Operators not only need to spend a lot of time and effort on disassembly and installation but may also damage the fixture or lathe components due to improper operation, increasing production costs and maintenance difficulties. Although a small number of fixtures can be quickly disassembled and reassembled, these still require replacing the entire fixture structure when changing them. This not only increases the cost of fixture inventory, but also, due to the differences between different fixture structures, requires readjustment of lathe parameters after replacement, further affecting processing efficiency and product quality. Utility Model Content

[0004] The main purpose of this utility model is to provide a cylinder bottom stop fixture, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A cylinder bottom stop fixture includes a fixture platform, and a hydraulic cylinder bottom component is provided on the top of the fixture platform;

[0007] The fixture table has an internal movable cavity, and two movable plates are slidably arranged in the movable cavity. Fixed plates are fixedly connected to both sides of the movable plates, and a connecting seat is fixedly connected between the fixed plates. The fixture table has an adjusting component for controlling the two movable plates to move towards each other.

[0008] Each of the two connecting seats has a detachable clamping seat on its opposite surface for clamping and fixing the bottom component of the hydraulic cylinder.

[0009] The connecting seat has an inner cavity, and a reset plate is provided inside the inner cavity. A limit rod is installed on the side of the reset plate near the connecting seat to limit and fix the clamping seat. An elastic element for resetting the connecting seat is installed on the side of the reset plate away from the connecting seat.

[0010] Preferably, the adjusting component includes a bidirectional threaded rod and a knob. The two ends of the bidirectional threaded rod are fixedly connected to rotating rods, and the rotating rods are rotatably connected to rotating holes opened at both ends of the fixture table. The knob is fixedly connected to the outer end of one of the rotating rods. The side wall of the movable plate is provided with a threaded hole that is threadedly connected to the bidirectional threaded rod. The two sides of the movable plate are fixedly connected to sliders, and the sliders are slidably connected to sliding openings opened on both sides of the fixture table. The fixed plate is fixedly connected to the sliders.

[0011] Preferably, the elastic element includes guide rods and springs. Two guide rods are fixedly connected to the side of the reset plate away from the clamping seat. The guide rods are inserted and installed through guide holes opened on the outer wall of the connecting seat. The springs are sleeved on the outside of the guide rods and are also fixedly connected between the opposite surfaces of the reset plate and the inner cavity. A handle is fixedly connected between the two guide rods at the ends away from the reset plate. The limiting rod passes through a connecting hole opened on the side of the inner cavity near the clamping seat.

[0012] Preferably, a T-shaped positioning groove is provided on the inner side wall of the connecting seat, and a T-shaped positioning plate is fixedly connected to the outer side wall of the clamping seat. The T-shaped positioning plate is inserted into the T-shaped positioning groove, and a limiting hole is provided on the side of the T-shaped positioning plate away from the clamping seat for the corresponding insertion of the limiting rod.

[0013] Preferably, the clamping seat has a clamping groove on the side away from the T-shaped positioning plate, and the clamping groove is adapted to the shape of the bottom component of the hydraulic cylinder.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By setting a movable cavity inside the fixture table and sliding two movable plates with fixed plates and connecting seats inside the movable cavity, and cooperating with the adjusting component for controlling the opposite movement of the two movable plates, the distance between the two connecting seats can be flexibly adjusted, thereby adapting to the bottom components of hydraulic cylinders of different sizes and specifications, and improving the versatility of the fixture.

[0016] Meanwhile, the detachable clamping seat on the connecting seat means that when dealing with irregularly shaped or different cylinder bottom parts, it is not necessary to replace the entire clamp. Only the clamping seat of the appropriate shape needs to be replaced to meet the clamping requirements, which simplifies the clamping replacement process and reduces clamping inventory costs and replacement time.

[0017] The combined design of the reset plate, limit rod and elastic element in the inner cavity of the connecting seat can quickly realize the limiting fixation and disassembly of the clamping seat, further improving the convenience of the clamping tool. It ensures that during the machining of the stop of the bottom part of the hydraulic cylinder, the clamping operation can be completed efficiently and the stability of the part clamping can be guaranteed, providing a reliable guarantee for the machining accuracy. It effectively solves the problems of poor flexibility, cumbersome disassembly and assembly and low adaptability of traditional clamping tools. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the adjusting component of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the elastic element of this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping base of this utility model.

[0022] In the diagram: 1. Fixture table; 2. Hydraulic cylinder bottom component; 3. Movable cavity; 4. Rotating hole; 5. Sliding port; 6. Bidirectional threaded rod; 7. Rotating rod; 8. Knob; 9. Movable plate; 10. Screw hole; 11. Slider; 12. Fixed plate; 13. Connecting seat; 14. Clamping seat; 15. T-shaped positioning groove; 16. Inner cavity; 17. Connecting hole; 18. Guide hole; 19. Reset plate; 20. Guide rod; 21. Spring; 22. Handle; 23. Limiting rod; 24. Clamping groove; 25. T-shaped positioning plate; 26. Limiting hole. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 - Figure 4 As shown, a cylinder bottom stop fixture includes a fixture platform 1, and a hydraulic cylinder bottom component 2 is provided on the top of the fixture platform 1.

[0025] The fixture table 1 has an internal movable cavity 3, and two movable plates 9 are slidably arranged in the movable cavity 3. Fixed plates 12 are fixedly connected to both sides of the movable plates 9, and a connecting seat 13 is fixedly connected between the fixed plates 12. The fixture table 1 has an adjusting component for controlling the two movable plates 9 to move in opposite directions.

[0026] The two connecting seats 13 are respectively provided with detachable clamping seats 14 on their opposite surfaces for clamping and fixing the bottom component 2 of the hydraulic cylinder.

[0027] The connecting seat 13 has an inner cavity 16 inside, and a reset plate 19 is provided inside the inner cavity 16. A limit rod 23 is installed on the side of the reset plate 19 near the connecting seat 13 for limiting and fixing the clamping seat 14. An elastic element for resetting the connecting seat 13 is installed on the side of the reset plate 19 away from the connecting seat 13.

[0028] like Figure 2 As shown, the adjusting mechanism adjusts the spacing of the movable plate 9 through components such as the bidirectional threaded rod 6, knob 8, and rotating rod 7. The adjusting mechanism includes the bidirectional threaded rod 6 and knob 8. Rotating rods 7 are fixedly connected to both ends of the bidirectional threaded rod 6, and the rotating rods 7 are rotatably connected to the rotating holes 4 at both ends of the fixture table 1. The knob 8 is fixedly connected to the outer end of one end of the rotating rod 7. Screw holes 10 are provided on the side wall of the movable plate 9 for threaded connection with the bidirectional threaded rod 6. Slider blocks 11 are fixedly connected to both sides of the movable plate 9, and the sliders 11 are slidably connected to the sliding openings 5 ​​on both sides of the fixture table 1. The fixed plate 1... 2 is fixedly connected to the slider 11. When the knob 8 is turned, the rotating rod 7 drives the bidirectional threaded rod 6 to rotate synchronously in the rotating hole 4 of the fixture table 1. Since the screw hole 10 of the movable plate 9 is threadedly connected to the bidirectional threaded rod 6, and the movable plate 9 is slidably limited by the sliding mouth 5 of the fixture table 1 through the slider 11, the rotation of the bidirectional threaded rod 6 will be converted into the sliding of the two movable plates 9 towards each other or in opposite directions, ensuring that the movable plate 9 drives the fixed plate 12 and the connecting seat 13 to move smoothly, so that the clamping seat 14 can quickly adapt to the bottom parts 2 of hydraulic cylinders of different sizes after moving towards each other, thereby improving the flexibility and stability of clamping.

[0029] like Figure 3As shown, the elastic element enables the quick positioning and disassembly of the clamping seat 14 through components such as guide rod 20, spring 21, and reset plate 19. The elastic element includes guide rod 20 and spring 21. Two guide rods 20 are fixedly connected to the side of the reset plate 19 away from the clamping seat 14. The guide rods 20 are inserted into the guide holes 18 opened on the outer wall of the connecting seat 13. The spring 21 is fitted outside the guide rods 20 and is also fixedly connected between the opposite surfaces of the reset plate 19 and the inner cavity 16. A handle 22 is fixedly connected between the two guide rods 20 at the ends away from the reset plate 19. A limiting rod 23 passes through the inner cavity 16 and is opened on the side near the clamping seat 14. In its natural state, the spring force of the spring 21 pushes the reset plate 19 toward the side of the connecting seat 13, so that the limiting rod 23 passes through the connecting hole 17 and inserts into the limiting hole 26 of the clamping seat 14 to complete the fixation. When the handle 22 is pulled, the guide rod 20 drives the reset plate 19 to compress the spring 21, and the limiting rod 23 exits from the limiting hole 26, releasing the restriction on the clamping seat 14. The cooperation between the guide rod 20 and the guide hole 18 ensures the linear movement of the reset plate 19, and the elastic potential energy of the spring 21 ensures that the limiting rod 23 always has a reset tendency, realizing the quick loading and unloading of the clamping seat 14, simplifying the replacement process, and improving the operating efficiency.

[0030] like Figure 3 and Figure 4 As shown, the connecting seat 13 is engaged with the T-shaped positioning plate 25 of the clamping seat 14 through the T-shaped positioning groove 15 to form a preliminary positioning. The inner side wall of the connecting seat 13 is provided with the T-shaped positioning groove 15, and the outer side wall of the clamping seat 14 is fixedly connected with the T-shaped positioning plate 25. The T-shaped positioning plate 25 is engaged with the T-shaped positioning groove 15. The side of the T-shaped positioning plate 25 away from the clamping seat 14 is also provided with a limiting hole 26 for the corresponding insertion of the limiting rod 23. The concave and convex fit of the T-shaped structure restricts the displacement of the clamping seat 14 in the horizontal and vertical directions, ensuring that its relative position with the connecting seat 13 is accurate. At the same time, the limiting rod 23 is inserted into the limiting hole 26 of the T-shaped positioning plate 25 to further lock the connection between the two and prevent loosening during the processing. This not only ensures the accuracy of the installation of the clamping seat 14, but also enhances the stability of the connection, providing a basic guarantee for the subsequent processing accuracy.

[0031] like Figure 4As shown, the clamping seat 14 has a clamping groove 24 on the side away from the T-shaped positioning plate 25. The clamping groove 24 is adapted to the shape of the hydraulic cylinder bottom component 2. The clamping groove 24 of the clamping seat 14 is designed to be adapted to the shape of the hydraulic cylinder bottom component 2. When the two clamping seats 14 move towards each other under the action of the adjusting component, the clamping groove 24 can fit tightly with the outer contour of the cylinder bottom component 2 to form a surface contact clamping. The adaptable groove design increases the clamping area and disperses the clamping force. This not only avoids the deformation of the component caused by excessive local stress, but also effectively prevents the cylinder bottom component 2 from shifting or shaking during the processing, ensuring the accuracy and quality of the stop processing. This ensures that the fixture can effectively clamp and fix the hydraulic cylinder bottom component 2 by simply replacing the clamping seat 14 with the same shape as the irregular hydraulic cylinder bottom component 2 and having the clamping groove 24.

[0032] The specific operating principle of this cylinder bottom stop fixture is as follows:

[0033] Based on the shape of the cylinder bottom component of the hydraulic cylinder to be processed, select a corresponding clamping seat 14 with a clamping groove 24 of the same shape to ensure that the clamping seat 14 can fit the cylinder bottom component 2 of the hydraulic cylinder. Then, manually pull the handle 22 located on the outside of the connecting seat 13 outward. The handle 22 will drive the guide rod 20 through the guide hole 18. The guide rod 20 will drive the limiting rod 23 to move synchronously in the inner cavity 16, and force the spring 21 fitted outside the guide rod 20 to tighten until the reset plate 19 drives the limiting rod 23 from the T-shaped positioning groove 15 into the connecting hole 17, and no longer obstructs the insertion of the T-shaped positioning plate 25. Insert the T-shaped positioning plate 25 on the outer wall of the clamping seat 14 from top to bottom into the T-shaped positioning groove 15, and then release the hand pulling the handle 22. At this time, the spring 21 will perform an elastic recovery extension operation and push the reset plate 19 in the inner cavity 16 closer to the clamping seat 14 until the limiting rod 23 passes through the connecting hole 17 and is inserted into the corresponding limiting hole 26 opened on the outer wall of the T-shaped positioning plate 25. In this way, the clamping seat 14 can be limited and fixed on the connecting seat 13 to complete the installation of the clamping seat 14. Then, place the hydraulic cylinder bottom component 2 on the top of the clamping table 1, and place the clamping table 1 between the clamping seats 14, and rotate the position. A knob 8 on one side of the fixture table 1 will cause the rotating rods 7 at both ends of the bidirectional threaded rod 6 to rotate within the rotating holes 4 at both ends of the fixture table 1. The rotating rods 7 will cause the bidirectional threaded rod 6 to rotate within the movable cavity 3. At this time, the two movable plates 9 will move relative to each other within the movable cavity 3 through the screw holes 10 on the side wall along the bidirectional threaded rod 6. During the movement, the sliders 11 on both sides of the movable plates 9 will slide within the sliding openings 5 ​​on both sides of the fixture table 1, and drive the fixed plate 12 to move synchronously. The fixed plate 12 will drive the connecting seat 13 installed between them to move, so as to realize the relative movement between the two clamping seats 14 until the bottom of the hydraulic cylinder is reached. The component 2 is clamped and fixed in the clamping groove 24 corresponding to the shape of the hydraulic cylinder bottom component 2 on the opposite surfaces of the two clamping seats 14, so that the hydraulic cylinder bottom component 2 can be machined to make a stop. Therefore, when it is necessary to machine the stop of the irregular hydraulic cylinder bottom component 2, simply pull the handle 22 to move the limit rod 23 out of the limit hole 26, remove the current clamping seat 14 from the connecting seat 13, select a clamping seat 14 with the same shape clamping groove 24, and then fix the clamping seat 14 to the connecting seat 13 to achieve clamping and fixing of the irregular hydraulic cylinder bottom component 2 without replacing the entire fixture.

[0034] The above description is merely 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, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements 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 cylinder bottom stop fixture, comprising a fixture table (1), wherein the top of the fixture table (1) is provided with a hydraulic cylinder bottom component (2); Its features are: The fixture table (1) has an internal movable cavity (3), and two movable plates (9) are slidably arranged in the movable cavity (3). Fixed plates (12) are fixedly connected to both sides of the movable plates (9), and a connecting seat (13) is fixedly connected between the fixed plates (12). The fixture table (1) has an adjustment component for controlling the two movable plates (9) to move towards each other. The two connecting seats (13) are respectively provided with detachable clamping seats (14) on their opposite surfaces for clamping and fixing the hydraulic cylinder bottom component (2); The connecting seat (13) has an inner cavity (16) inside, and a reset plate (19) is provided inside the inner cavity (16). A limit rod (23) is installed on the side of the reset plate (19) near the connecting seat (13) for limiting and fixing the clamping seat (14). An elastic element for resetting the connecting seat (13) is installed on the side of the reset plate (19) away from the connecting seat (13).

2. The cylinder bottom machining stop fixture according to claim 1, characterized in that: The adjusting component includes a bidirectional threaded rod (6) and a knob (8). The two ends of the bidirectional threaded rod (6) are fixedly connected to rotating rods (7), and the rotating rods (7) are rotatably connected to the rotating holes (4) opened at both ends of the fixture table (1). The knob (8) is fixedly connected to the outer end of one of the rotating rods (7). The side wall of the movable plate (9) is provided with a screw hole (10) that is threadedly connected to the bidirectional threaded rod (6). The two sides of the movable plate (9) are fixedly connected to sliders (11), and the sliders (11) are slidably connected to the sliding openings (5) opened on both sides of the fixture table (1). The fixed plate (12) is fixedly connected to the sliders (11).

3. The cylinder bottom machining stop fixture according to claim 1, characterized in that: The elastic element includes guide rods (20) and springs (21). Two guide rods (20) are fixedly connected to the side of the reset plate (19) away from the clamping seat (14). The guide rods (20) are inserted and installed through the guide holes (18) opened on the outer side wall of the connecting seat (13). The springs (21) are fitted on the outside of the guide rods (20) and are also fixedly connected between the opposite surfaces of the reset plate (19) and the inner cavity (16). A handle (22) is fixedly connected between the two guide rods (20) at the ends away from the reset plate (19). The limiting rod (23) passes through the connecting hole (17) opened on the side of the inner cavity (16) near the clamping seat (14).

4. A cylinder bottom machining stop fixture according to claim 1, characterized in that: The inner wall of the connecting seat (13) is provided with a T-shaped positioning groove (15), and the outer wall of the clamping seat (14) is fixedly connected with a T-shaped positioning plate (25). The T-shaped positioning plate (25) is inserted into the T-shaped positioning groove (15). The side of the T-shaped positioning plate (25) away from the clamping seat (14) is also provided with a limiting hole (26) for the corresponding insertion of the limiting rod (23).

5. A cylinder bottom machining stop fixture according to claim 4, characterized in that: The clamping seat (14) has a clamping groove (24) on the side away from the T-shaped positioning plate (25), and the clamping groove (24) is adapted to the shape of the bottom component (2) of the hydraulic cylinder.

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