Plunger sleeve machining clamp

Abstract

The utility model discloses a plunger sleeve machining clamp which comprises a machine tool, a machining platform is fixedly connected to the interior of the machine tool, a seat ring is fixedly connected to the top of the machining platform, a seat body is fixedly connected to the top of the seat ring, and an electric push rod is fixedly connected to the interior of the seat body. The top of the output end of the electric push rod is fixedly connected with an assembly plate, the top of the assembly plate is fixedly connected with two L-shaped rods, and one ends of the two L-shaped rods are fixedly connected with the same inner conical sleeve. According to the utility model, the electric push rod drives the inner conical sleeve to press downwards, and the plurality of outer conical strips are synchronously and radially shrunk by utilizing a conical surface matching structure, so that the plunger sleeve bodies with different diameters are automatically centered and clamped; the elastic reset function of the spring ensures the uniform distribution of the clamping force, so that the workpiece deformation is avoided, and the clamping efficiency is improved; the functions of rapid clamping and automatic workpiece tolerance adaptation are integrally achieved, and the machining efficiency and the product consistency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of plunger sleeve processing equipment, and in particular to a plunger sleeve processing fixture. Background Technology

[0002] A plunger sleeve is a mechanical sealing element, typically used in sealing areas for transmitting hydraulic oil or compressed air. The fit between the plunger and plunger sleeve is crucial. First, the appropriate plunger sleeve inner diameter is selected based on the plunger diameter; finally, the clearance is adjusted to ensure the system's sealing performance and operational efficiency. Therefore, to guarantee a proper fit between the plunger and plunger sleeve, the inner bore of the plunger sleeve needs to be ground during machining.

[0003] In the existing technology, due to the certain tolerance of the outer diameter of the plunger sleeve, the existing fixtures are difficult to quickly and accurately position and fix workpieces of different diameters, and frequent fixture changes or clamping mechanism adjustments are required, which reduces the processing efficiency. Therefore, we propose a plunger sleeve processing fixture to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a plunger sleeve machining fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A plunger sleeve machining fixture includes a machine tool. A machining platform is fixedly connected inside the machine tool. A seat ring is fixedly connected to the top of the machining platform. A seat body is fixedly connected to the top of the seat ring. An electric push rod is fixedly connected inside the seat body. An assembly plate is fixedly connected to the top of the output end of the electric push rod. Two L-shaped rods are fixedly connected to the top of the assembly plate. One end of the two L-shaped rods is fixedly connected to the same inner conical sleeve. Multiple T-slots are opened on the top of the seat body. T-blocks are slidably connected inside the multiple T-slots. An outer conical strip is fixedly connected to the top of the T-blocks. A reset assembly is provided inside the T-slots.

[0007] Preferably, the reset assembly includes multiple springs, and a round rod is fixedly connected to the inner wall of each of the multiple T-slots. The multiple springs are respectively sleeved on the outer wall of the multiple round rods. One end of the spring is fixedly connected to the outer wall of the T-block, and the other end of the spring is fixedly connected to the inner wall of the T-slot. After the inner conical sleeve moves upward by setting the reset assembly, the multiple outer conical strips are reset by the elastic force of the spring.

[0008] Preferably, the outer wall of the seat ring is provided with multiple mounting holes, through which existing bolts pass to fix it to the machining platform.

[0009] Preferably, the top of the base has two sliding holes, the inner walls of the two sliding holes are slidably connected to the outer walls of the two L-shaped rods respectively, and the two sliding holes assist the two L-shaped rods to move up and down.

[0010] Preferably, the inner wall of the inner conical sleeve is rotatably embedded with multiple balls, thereby reducing the friction between the inner and outer conical strips.

[0011] Preferably, the outer wall of the T-block is provided with a sliding hole, and the inner wall of the sliding hole is slidably connected to the outer wall of the round rod, so that the T-block can move stably by setting the round rod.

[0012] Preferably, a plunger sleeve body is placed inside the inner conical sleeve, and a grinding drill bit is installed inside the machine tool. The grinding drill bit is controlled to move up and down by a servo motor and a ball screw.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution uses an electric push rod to drive the inner conical sleeve downwards, and utilizes the conical surface mating structure to make multiple outer conical strips retract radially synchronously, thereby achieving automatic centering and clamping of plunger sleeve bodies of different diameters. The elastic reset function of the spring ensures the uniform distribution of clamping force, which not only avoids workpiece deformation but also improves clamping efficiency. Overall, it realizes the functions of rapid clamping and automatic adaptation to workpiece tolerances, significantly improving processing efficiency and product consistency. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional structural diagram of a plunger sleeve machining fixture proposed in this utility model;

[0017] Figure 2 This is a partial cross-sectional structural diagram of a plunger sleeve machining fixture proposed in this utility model;

[0018] Figure 3 This utility model proposes a plunger sleeve machining fixture. Figure 2 A magnified structural diagram of part A in the diagram;

[0019] Figure 4 This is a partial three-dimensional structural diagram of a plunger sleeve machining fixture proposed in this utility model;

[0020] Figure 5This is a three-dimensional structural diagram of a plunger sleeve machining fixture proposed in this utility model.

[0021] In the diagram: 1. Machine tool; 2. Machining platform; 3. Seat ring; 4. Mounting hole; 5. Seat body; 6. Electric push rod; 7. Assembly plate; 8. L-shaped rod; 9. Inner tapered sleeve; 10. T-slot; 11. T-block; 12. Round rod; 13. Spring; 14. Outer tapered strip; 15. Plunger sleeve body; 16. Grinding drill bit. Detailed Implementation

[0022] 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.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] Depend on Figures 1-5 As shown, a plunger sleeve machining fixture is disclosed, including a machine tool 1. The machine tool 1 is an existing CNC machine tool. An existing controller is installed on the outside of the machine tool 1. A machining platform 2 is fixedly connected inside the machine tool 1. A seat ring 3 is fixedly connected to the top of the machining platform 2. Multiple mounting holes 4 are opened on the outer wall of the seat ring 3. A seat body 5 is fixedly connected to the top of the seat ring 3.

[0025] An electric push rod 6 is fixedly connected inside the base 5. An assembly plate 7 is fixedly connected to the top of the output end of the electric push rod 6. Two L-shaped rods 8 are fixedly connected to the top of the assembly plate 7. Two sliding holes are opened on the top of the base 5. The inner walls of the two sliding holes are slidably connected to the outer walls of the two L-shaped rods 8 respectively. One end of the two L-shaped rods 8 is fixedly connected to the same inner conical sleeve 9. The assembly plate 7 drives the L-shaped rods 8 to move down along the sliding holes of the base 5, so that the inner conical sleeve 9 descends synchronously. Multiple balls are rotatably embedded in the inner wall of the inner conical sleeve 9.

[0026] The top of the base 5 is provided with multiple T-slots 10, and T-blocks 11 are slidably connected inside the multiple T-slots 10. The T-blocks 11 move linearly along the T-slots 10. The outer wall of the T-blocks 11 is provided with sliding holes, and the inner wall of the sliding holes is slidably connected to the outer wall of the round rod 12. An outer tapered strip 14 is fixedly connected to the top of the T-blocks 11. A plunger sleeve body 15 is placed inside the inner tapered sleeve 9. The tapered inner wall of the inner tapered sleeve 9 presses the inclined surface of the outer tapered strip 14, causing it to slide inward along the T-slots 10, thereby clamping the plunger sleeve body 15. A grinding drill bit 16 is installed inside the machine tool 1.

[0027] The T-slot 10 is equipped with a reset assembly, which includes multiple springs 13. The inner walls of the multiple T-slots 10 are fixedly connected to round rods 12. The multiple springs 13 are respectively sleeved on the outer walls of the multiple round rods 12. One end of the spring 13 is fixedly connected to the outer wall of the T-block 11, and the other end of the spring 13 is fixedly connected to the inner wall of the T-slot 10. The spring 13 is stretched to provide a reverse reset force.

[0028] The electric push rod 6 retracts, the inner conical sleeve 9 rises, the spring 13 contracts, driving the outer conical strip 14 to return to its original position, releasing the clamping of the plunger sleeve body 15.

[0029] Working principle: When grinding the inner hole of the plunger sleeve body 15, the seat ring 3 is fixed to the top of the processing platform 2 through multiple mounting holes 4 and existing bolts. Then, the plunger sleeve body 15 is inserted into the inner conical sleeve 9 from top to bottom and is located in the multiple annularly arranged outer conical strips 14. When clamping and fixing the plunger sleeve body 15, the electric push rod 6 drives the assembly plate 7 to move downward. The downward movement of the assembly plate 7 drives the two L-shaped rods 8 to move downward. The downward movement of the two L-shaped rods 8 drives the inner conical sleeve 9 to move downward. The downward movement of the inner conical sleeve 9 causes its inner conical surface to press against the inclined outer wall of the multiple outer conical strips 14. The inclined extrusion force drives the multiple outer conical strips 14 to move inward. When the outer conical strips 14 move, the spring 13 stretches and deforms. After the multiple outer conical strips 14 move inward, they position and fix the outer wall of the plunger sleeve body 15 so that the inner hole can be ground by the grinding drill bit 16.

[0030] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plunger sleeve machining fixture, comprising a machine tool (1), characterized in that, The machine tool (1) is internally fixedly connected to a processing platform (2), the top of the processing platform (2) is fixedly connected to a seat ring (3), the top of the seat ring (3) is fixedly connected to a seat body (5), the inside of the seat body (5) is fixedly connected to an electric push rod (6), the top of the output end of the electric push rod (6) is fixedly connected to an assembly plate (7), the top of the assembly plate (7) is fixedly connected to two L-shaped rods (8), one end of the two L-shaped rods (8) is fixedly connected to the same inner conical sleeve (9), the top of the seat body (5) is provided with multiple T-shaped grooves (10), the inside of the multiple T-shaped grooves (10) is slidably connected to a T-shaped block (11), the top of the T-shaped block (11) is fixedly connected to an outer conical strip (14), and the inside of the T-shaped groove (10) is provided with a reset component.

2. The plunger sleeve machining fixture according to claim 1, characterized in that, The reset assembly includes multiple springs (13), and round rods (12) are fixedly connected to the inner walls of multiple T-slots (10). Multiple springs (13) are respectively sleeved on the outer walls of multiple round rods (12). One end of the spring (13) is fixedly connected to the outer wall of the T-block (11), and the other end of the spring (13) is fixedly connected to the inner wall of the T-slot (10).

3. The plunger sleeve machining fixture according to claim 1, characterized in that, The outer wall of the seat ring (3) is provided with multiple mounting holes (4).

4. A plunger sleeve machining fixture according to claim 1, characterized in that, The top of the seat (5) has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the two L-shaped rods (8).

5. A plunger sleeve machining fixture according to claim 1, characterized in that, The inner wall of the inner conical sleeve (9) is rotatably inlaid with multiple balls.

6. A plunger sleeve machining fixture according to claim 2, characterized in that, The outer wall of the T-shaped block (11) is provided with a sliding hole, and the inner wall of the sliding hole is slidably connected to the outer wall of the round rod (12).

7. A plunger sleeve machining fixture according to claim 1, characterized in that, The inner conical sleeve (9) contains a plunger sleeve body (15), and the machine tool (1) contains a grinding drill bit (16).

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