A machining fixture for hydraulic cylinder bottom

Abstract

The utility model discloses a machining clamp for hydraulic oil cylinder bottom, including base, the fixed block is fixed on the base, and the movable block is slid on the base, the fixed block is swinged to be connected with two first turntables, and the first clamping surface is arranged on two first turntables, the movable block is swinged to be connected with two second turntables, and the second clamping surface is arranged on two second turntables, two first clamping surfaces and two second clamping surfaces are opposite and set up, the utility model discloses the setting of two first turntables and two second turntables, whether it is cylindrical or square cylinder bottom, this device can realize effective clamping, not only has improved the stability and reliability of clamping, has reduced the risk of loosening or slipping in the clamping process, still through the diversified clamping mode, has improved the versatility and practicality of device, has reduced the use cost, has provided great convenience for the processing, assembly of hydraulic oil cylinder and other work.

Description

Technical Field

[0001] This utility model relates to a machining fixture for the bottom of a hydraulic cylinder, belonging to the field of hydraulic cylinder machining technology. Background Technology

[0002] In the actual production processes of hydraulic cylinder machining and assembly, clamping the cylinder bottom is a crucial operation. However, existing clamping devices have many limitations. Traditional clamping devices are often only suitable for clamping cylinder bottoms of specific shapes, such as cylindrical or square cylinder bottoms, lacking versatility. When dealing with cylinder bottoms of different shapes, it is necessary to frequently change different clamping tools, which not only increases operating costs and reduces production efficiency, but also may lead to operational errors during the changeover process, affecting production progress. Therefore, a machining fixture for hydraulic cylinder bottoms is proposed. Utility Model Content

[0003] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a machining fixture for the bottom of a hydraulic cylinder, which improves the stability and reliability of clamping, reduces the loosening or slippage that may occur during clamping, and enhances the versatility and practicality of the device through diversified clamping methods.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a machining fixture for the bottom of a hydraulic cylinder, comprising:

[0005] A base, on which a fixed block is fixed and a movable block that can slide is provided;

[0006] Two first turntables are rotatably connected to the fixed block, and the two first turntables are provided with first clamping surfaces;

[0007] Two second turntables are rotatably connected to the moving block, and the two second turntables are provided with second clamping surfaces;

[0008] The two first clamping surfaces are arranged opposite to the two second clamping surfaces.

[0009] Preferably, the fixed block has a groove for mounting the first turntable, and a first recessed groove is provided on the fixed block. A pressure plate is fixed inside the first recessed groove by a first bolt.

[0010] One end of the pressure plate extends above the first turntable. A second bolt is provided on the pressure plate. The threaded end of the second bolt passes through the center of the pressure plate and the first turntable and engages with the side wall of the rotating groove.

[0011] Preferably, the first turntable has a through hole at its center, and a bearing is installed inside the through hole, with the second bolt passing through the center hole of the bearing.

[0012] Preferably, the upper surface of the first turntable is provided with a second sink groove, the lower surface of the pressure plate is pressed against the bottom wall of the second sink groove, and a baffle is provided on one side of the second sink groove.

[0013] When one side of the pressure plate abuts against the baffle, the first clamping surfaces on the two first turntables are on the same plane.

[0014] Preferably, a first connecting block is fixedly connected to the upper surface of the fixed block, a second connecting block is fixedly connected to the upper surface of the first turntable, and a tension spring is provided between the first connecting block and the second connecting block;

[0015] When the first turntable rotates, causing the first clamping surface to deflect toward the center of the base, the tension spring is stretched.

[0016] Preferably, the mounting structure of the second turntable mounted on the moving block is the same as the mounting structure of the first turntable mounted on the fixed block.

[0017] Preferably, a slider is provided below the base, the slider is fixedly connected to a moving block, and a lead screw is rotatably connected to the base via a motor, with a power block for driving the slider to move meshing on the lead screw.

[0018] Preferably, two guide rods are arranged parallel to each other below the base, and the slider and the power block are slidably sleeved on the two guide rods.

[0019] Preferably, a spring is fitted onto each of the two guide rods, with one end of the spring abutting against the side wall of the slider and the other end of the spring abutting against the side wall of the power block;

[0020] A reset lever is fixedly connected to the power block, and the end of the reset lever away from the power block passes through the side wall of the slider and is fixed with a stop block.

[0021] Preferably, both the first clamping surface and the second clamping surface are provided with a rubber layer, and the surface of the rubber layer is provided with anti-slip texture.

[0022] Compared with existing technologies:

[0023] 1. With the arrangement of two first turntables and two second turntables, this utility model can effectively clamp both cylindrical and square cylinder bottoms. This not only improves the stability and reliability of clamping and reduces the risk of loosening or slippage during clamping, but also enhances the versatility and practicality of the device through diversified clamping methods, reduces the cost of use, and provides great convenience for the processing and assembly of hydraulic cylinders.

[0024] 2. This utility model uses a starting motor to drive the lead screw to rotate. The power block, meshing with the lead screw and slidably sleeved on the guide rod, moves with the lead screw's rotation. This, in turn, drives the moving block to slide via a slider, achieving distance adjustment. This allows for quick adaptation to cylinder bottoms of different sizes, improving the versatility and flexibility of clamping. A spring sleeved on the guide rod allows for adjustment of the clamping force, effectively preventing hard clamping damage to the cylinder bottom and protecting it. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a bottom view of the structure of this utility model;

[0027] Figure 3 This is an exploded view of the moving block, slider, lead screw and power block of this utility model;

[0028] Figure 4 This is an exploded view of the base, the fixed block, the first turntable, and the pressure plate of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the bottom of the clamping cylindrical hydraulic cylinder of this utility model;

[0030] Figure 6 This is a schematic diagram of the structure of the first clamping surface and the second clamping surface of this utility model after rotation.

[0031] In the picture:

[0032] 1. Base;

[0033] 2. Fixed block, 201. Rotary groove, 202. First settling groove;

[0034] 3. Moving block;

[0035] 4. First turntable;

[0036] 401, First clamping surface; 402, Through hole; 403, Second recess; 404, Baffle wall;

[0037] 5. Second turntable, 501. Second clamping surface;

[0038] 6. First bolt; 7. Pressure plate; 8. Second bolt; 9. Bearing;

[0039] 10. First connecting block; 11. Second connecting block; 12. Tension spring;

[0040] 13. Slider, 14. Lead screw, 15. Power block, 16. Guide rod, 17. Motor, 18. Spring, 19. Reset rod, 1901. Stop block. Detailed Implementation

[0041] The present invention is illustrated below with specific embodiments, but these are not intended to limit the scope of the invention.

[0042] Example 1

[0043] like Figures 1-6 As shown in the figure, in this embodiment, a machining fixture for the bottom of a hydraulic cylinder is provided, including a base 1, a fixed block 2 fixed on the base 1, and a slidable movable block 3 provided on the base 1; two first turntables 4 are rotatably connected to the fixed block 2, and the two first turntables 4 are provided with first clamping surfaces 401; two second turntables 5 are rotatably connected to the movable block 3, and the two second turntables 5 are provided with second clamping surfaces 501; the two first clamping surfaces 401 and the two second clamping surfaces 501 are arranged opposite to each other.

[0044] Both the first clamping surface 401 and the second clamping surface 501 are provided with a rubber layer, and the surface of the rubber layer is provided with anti-slip texture.

[0045] Work process:

[0046] The bottom of the hydraulic cylinder to be processed is placed on the base 1, so that the bottom of the cylinder is positioned between the two first turntables 4 on the fixed block 2 and the two second turntables 5 on the moving block 3. Since both the first clamping surface 401 and the second clamping surface 501 are provided with a rubber layer with anti-slip texture, when the moving block 3 slides and the second turntable 5 moves closer to the first turntable 4, the first clamping surface 401 and the second clamping surface 501 gradually contact the bottom of the cylinder and apply clamping force to it. The rubber layer and the anti-slip texture increase the friction between the clamping surface and the bottom of the cylinder, preventing the bottom of the cylinder from sliding during the clamping process, thereby stably clamping the bottom of the hydraulic cylinder on the processing fixture for subsequent processing operations.

[0047] Example 2

[0048] like Figure 4 As shown, based on Embodiment 1, in this embodiment, in order to install the first turntable 4 on the fixed block 2 and the second turntable 5 on the moving block 3, the fixed block 2 is provided with a turntable groove 201 for installing the first turntable 4, and the fixed block 2 is provided with a first recessed groove 202. The pressure plate 7 is fixed inside the first recessed groove 202 by the first bolt 6.

[0049] One end of the pressure plate 7 extends above the first turntable 4. A second bolt 8 is provided on the pressure plate 7. The threaded end of the second bolt 8 passes through the center of the pressure plate 7 and the first turntable 4 in sequence and is engaged with the side wall of the rotating groove 201.

[0050] The first turntable 4 has a through hole 402 in the center, and a bearing 9 is installed inside the through hole 402. The second bolt 8 is inserted into the center hole of the bearing 9.

[0051] The upper surface of the first turntable 4 is provided with a second sink 403, the lower surface of the pressure plate 7 is pressed against the bottom wall of the second sink 403, and a baffle 404 is provided on one side of the second sink 403.

[0052] When one side of the pressure plate 7 abuts against the baffle 404, the first clamping surfaces 401 on the two first turntables 4 are on the same plane, and the first clamping surfaces 401 are prevented from rotating to an outward state by the limiting effect of the pressure plate 7 and the baffle 404.

[0053] The upper surface of the fixed block 2 is fixedly connected to the first connecting block 10, and the upper surface of the first turntable 4 is fixedly connected to the second connecting block 11. A tension spring 12 is provided between the first connecting block 10 and the second connecting block 11.

[0054] The mounting structure of the second turntable 5 on the moving block 3 is the same as the mounting structure of the first turntable 4 on the fixed block 2.

[0055] When the bottom of the cylindrical hydraulic cylinder is clamped, the side wall of the cylinder bottom exerts a force on the two first clamping surfaces 401 and the two second clamping surfaces 501, causing the two first turntables 4 and the two second turntables 5 to rotate relative to each other.

[0056] The first turntable 4 rotates, causing the first clamping surface 401 to deflect towards the center of the base 1; the second turntable 5 rotates, causing the second clamping surface 501 to deflect towards the center of the base 1 (e.g., Figures 5-6 As shown), the two first clamping surfaces 401 and the two second clamping surfaces 501 form a V shape, and the tension spring 12 is stretched. When the bottom of the cylindrical hydraulic cylinder is released, the force exerted by the cylinder bottom sidewall on the first clamping surface 401 disappears. Thus, through the tension of the tension spring 12, the first turntable 4 can be reset. Under the restriction of the pressure plate 7 and the baffle 404, after the two first turntables 4 are reset and rotated, the two first clamping surfaces 401 are reset to the state of being on the same plane.

[0057] When clamping the bottom of a square hydraulic cylinder, the two first turntables 4 and the two second turntables 5 directly clamp the two sides of the bottom of the hydraulic cylinder, thereby increasing the versatility of clamping.

[0058] Example 3

[0059] like Figures 2-3 As shown, based on the above embodiments, in this embodiment, in order to drive the moving block 3 to slide, a slider 13 is provided below the base 1. The slider 13 is fixedly connected to the moving block 3. A lead screw 14 is rotatably connected to the base 1 via a motor 17. A power block 15 for driving the slider 13 to move is meshed on the lead screw 14.

[0060] Two guide rods 16 are arranged parallel to each other below the base 1. The slider 13 and the power block 15 are slidably sleeved on the two guide rods 16. A spring 18 is sleeved on each of the two guide rods 16. One end of the spring 18 abuts against the side wall of the slider 13, and the other end of the spring 18 abuts against the side wall of the power block 15.

[0061] Among them, a reset lever 19 is fixedly connected to the power block 15, and the end of the reset lever 19 away from the power block 15 passes through the side wall of the slider 13 and is fixed with a stop block 1901.

[0062] Based on the above embodiments, when it is necessary to drive the moving block 3 to slide to adjust the distance between the first clamping surface 401 and the second clamping surface 501, the motor 17 is started, and the motor 17 drives the lead screw 14 to rotate. Since the power block 15 is meshed with the lead screw 14 and slidably sleeved on the guide rod 16, the rotation of the lead screw 14 drives the power block 15 to move. The movement of the power block 15 drives the moving block 3 to slide through the slider 13, thereby realizing the adjustment of the distance between the first clamping surface 401 and the second clamping surface 501 to adapt to the clamping of the bottom of hydraulic cylinders of different sizes. During the movement, the guide rod 16 plays a guiding role to ensure the smooth movement of the slider 13 and the power block 15. The spring 18 is sleeved on the guide rod 16 and plays a role in adjusting the clamping force (the compression of the spring 18 increases with the increase of the clamping force to achieve flexible clamping) to avoid the bottom of the cylinder being hard-crushed. When it is necessary to reset the moving block 3, the motor 17 runs in reverse, causing the lead screw 14 to rotate in reverse. During the reverse sliding process, the power block 15 pulls the reset lever 19 to drive the slider 13 (moving block 3) to move, thereby realizing the reset of the moving block 3.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model without departing from the spirit and scope of this utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A machining jig for a hydraulic cylinder bottom, characterized by, include: A base (1), on which a fixed block (2) is fixed, and a sliding moving block (3) is provided; Two first turntables (4) are rotatably connected to the fixed block (2), and the two first turntables (4) are provided with first clamping surfaces (401); The moving block (3) is rotatably connected to two second turntables (5), and the two second turntables (5) are provided with second clamping surfaces (501); Two first clamping surfaces (401) are arranged opposite to two second clamping surfaces (501).

2. The machining fixture for a hydraulic cylinder bottom according to claim 1, characterized in that The fixed block (2) is provided with a rotating groove (201) for installing the first turntable (4), and the fixed block (2) is provided with a first sink groove (202). The pressure plate (7) is fixed inside the first sink groove (202) by a first bolt (6). One end of the pressure plate (7) extends above the first turntable (4), and a second bolt (8) is provided on the pressure plate (7). The threaded end of the second bolt (8) passes through the center of the pressure plate (7) and the first turntable (4) and is engaged with the side wall of the rotating groove (201).

3. The machining fixture for a hydraulic cylinder bottom according to claim 2, characterized in that The first turntable (4) has a through hole (402) in the center, and a bearing (9) is provided inside the through hole (402). The second bolt (8) passes through the center hole of the bearing (9).

4. The machining fixture for the bottom of a hydraulic cylinder according to claim 3, wherein The upper surface of the first turntable (4) is provided with a second sink groove (403), the lower surface of the pressure plate (7) is pressed against the bottom wall of the second sink groove (403), and a baffle wall (404) is provided on one side of the second sink groove (403). When one side of the pressure plate (7) abuts against the baffle (404), the first clamping surfaces (401) on the two first turntables (4) are on the same plane.

5. A machining fixture for the bottom of a hydraulic cylinder according to claim 4, characterized in that, The upper surface of the fixed block (2) is fixedly connected to a first connecting block (10), the upper surface of the first turntable (4) is fixedly connected to a second connecting block (11), and a tension spring (12) is provided between the first connecting block (10) and the second connecting block (11). When the first turntable (4) rotates and causes the first clamping surface (401) to deflect toward the center of the base (1), the tension spring (12) is stretched.

6. The machining fixture for a hydraulic cylinder bottom as claimed in claim 5, characterized in that The mounting structure of the second turntable (5) on the moving block (3) is the same as the mounting structure of the first turntable (4) on the fixed block (2).

7. The machining fixture for a hydraulic cylinder bottom as claimed in claim 1, wherein A slider (13) is provided below the base (1), and the slider (13) is fixedly connected to the moving block (3). A lead screw (14) is rotatably connected to the base (1) via a motor (17), and a power block (15) for driving the slider (13) to move is engaged on the lead screw (14).

8. The machining fixture for a hydraulic cylinder bottom as claimed in claim 7, characterized in that Two guide rods (16) are arranged parallel to each other below the base (1), and the slider (13) and the power block (15) are slidably sleeved on the two guide rods (16).

9. The machining fixture for a hydraulic cylinder bottom as set forth in claim 8, wherein Two guide rods (16) are fitted with springs (18), one end of the spring (18) abuts against the side wall of the slider (13), and the other end of the spring (18) abuts against the side wall of the power block (15); The power block (15) is fixedly connected to a reset lever (19), and the end of the reset lever (19) away from the power block (15) passes through the side wall of the slider (13) and is fixed with a stop block (1901).

10. The machining fixture for a hydraulic cylinder bottom as set forth in claim 1, wherein Both the first clamping surface (401) and the second clamping surface (501) are provided with a rubber layer, and the surface of the rubber layer is provided with anti-slip texture.

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