An easy-to-clean abrasive flow machining fixture

Abstract

This utility model relates to the technical field of abrasive flow machining equipment, specifically to an easy-to-clean abrasive flow machining fixture, including a base plate and a pressure plate. The base plate has a feed hole, and the pressure plate has a through hole. A workpiece is placed in the feed hole and passes upward through the through hole. A sealing and unloading component is provided or integrally formed on the pressure plate, and the top end of the workpiece passes upward through the sealing and unloading component. The sealing and unloading component is used to isolate the top end of the workpiece from the through hole and guide the processed abrasive media to slide outward. The sealing and unloading component includes a flexible sealing ring. After the top end of the workpiece passes through the flexible sealing ring, the flexible sealing ring undergoes elastic deformation to wrap and adhere to the outer wall of the workpiece in contact with it. Therefore, an easy-to-clean abrasive flow machining fixture is designed to solve the problem of difficult cleaning of abrasive media in existing machining equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of abrasive flow processing equipment, and in particular to an abrasive flow processing tool that is easy to clean. Background Technology

[0002] In abrasive flow machining, unidirectional flow machining is often required for processing special structures such as deep microholes and intersecting holes in some workpieces. However, abrasive flow machining tools with bidirectional flow capabilities are more common. To save equipment costs, the industry typically integrates one-way valves, complex flow channels, and other structures into the tooling to convert the bidirectional motion of the machine tool into unidirectional flow through the workpiece. This is the technology of "using bidirectional flow as unidirectional flow".

[0003] While the technique of "using bidirectional flow as unidirectional flow" can effectively improve processing results, the integration of check valves and complex flow channels within the tooling inevitably introduces cleaning challenges. Current cleaning methods primarily rely on manual digging and brushing after complete disassembly, which is not only tedious, time-consuming, and inefficient, but also highly prone to damaging precision mating surfaces. Therefore, a more easily cleanable abrasive flow machining tooling is designed to address the problem of difficult abrasive media removal in existing abrasive flow machining equipment. Utility Model Content

[0004] The purpose of this invention is to provide an easy-to-clean abrasive flow machining fixture to solve the problem of difficult cleaning of abrasive media in existing machining equipment.

[0005] The technical solution of this utility model is: an abrasive flow machining tool that is easy to clean, comprising: a base plate and a pressure plate, wherein the base plate is provided with a material inlet hole and the pressure plate is provided with a through hole, wherein a workpiece is placed in the material inlet hole and the workpiece passes upward through the through hole; The pressure plate is provided with or integrally formed with a sealing pouring component, and the top end of the workpiece passes through the sealing pouring component upward. The sealing pouring component is used to isolate the top end of the workpiece from the through hole and guide the processed abrasive medium to slide outward.

[0006] Preferably, the sealing pouring component includes a flexible sealing ring. After the top end of the workpiece passes through the flexible sealing ring, the flexible sealing ring undergoes elastic deformation to wrap and adhere to the outer wall of the workpiece in contact with it. A material discharge platform is fitted around the outside of the flexible sealing ring. The material discharge platform is an umbrella-shaped structure that slopes outward and downward from the periphery of the flexible sealing ring, so that the processed abrasive medium slides off the sealing material discharge component.

[0007] Preferably, a height-equalizing column is fixedly installed on the base plate. In the assembled state, the top surface of the height-equalizing column is in contact with the bottom surface of the pressure plate to limit the distance between the pressure plate and the base plate and ensure processing accuracy.

[0008] Preferably, a column is fixedly installed on the pressure plate, and a clamping element is provided on the column.

[0009] Preferably, the receiving inlet includes a receiving hole for receiving the workpiece and an inlet for allowing the abrasive medium to enter.

[0010] Preferably, a first buffer layer is provided in the receiving hole, and when the workpiece is put into the receiving hole, the first buffer layer is in direct contact with the workpiece.

[0011] Preferably, the lower surface of the pressure plate is provided with a second buffer layer.

[0012] Preferably, the base plate is provided with a positioning pin, and the pressure plate is provided with a corresponding guide hole adapted to the positioning pin.

[0013] Preferably, a transition connector is detachably installed below the base plate.

[0014] Compared with the prior art, the advantages of this utility model are: By incorporating a sealing and unloading component, including a flexible sealing ring, the elastic deformation of the flexible sealing ring wraps around the outer wall of the workpiece, effectively blocking the leakage path of abrasive media into the tooling (through holes and below the pressure plate). This concentrates the area to be cleaned on the pressure plate, significantly reducing the workload of subsequent cleaning. The inclined design of the unloading platform outside the flexible sealing ring prevents the abrasive flowing from the top of the workpiece from accumulating on the top of the tooling, fundamentally solving the problem of abrasive media residue in tooling gaps caused by the complex structure of traditional tooling, which makes cleaning difficult. 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 schematic diagram of the easily cleanable abrasive flow machining tooling described in this utility model; Figure 2 This is another perspective schematic diagram of the easily cleanable abrasive flow machining tooling described in this utility model; Figure 3 This is a cross-sectional view of the easily cleanable abrasive flow machining tooling described in this utility model; Figure 4 This utility model Figure 3 Enlarged view of region A in the middle; Figure 5 This utility model Figure 3 Enlarged view of region B in the middle; The components are: 1. Base plate; 11. Feed inlet hole; 111. Feed inlet hole; 112. Feed port; 12. First buffer layer; 2. Pressure plate; 21. Through hole; 22. Second buffer layer; 3. Workpiece; 4. Equal height column; 5. Column; 6. Clamping element; 7. Transition connector; 8. Positioning pin; 9. Sealing and unloading component; 91. Flexible sealing ring; 92. Unloading platform. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1 to 5 As shown, an easy-to-clean abrasive flow machining fixture includes a base plate 1 and a pressure plate 2. The base plate 1 has a feed inlet 11, and the pressure plate 2 has a through hole 21. A workpiece 3 is placed in the feed inlet 11, and the workpiece 3 passes upward through the through hole 21. This fixture is suitable for workpieces 3 whose upper dimensions are smaller than their middle dimensions. The through hole 21 is slightly larger than the upper dimensions of the workpiece 3, and in the assembled state, the pressure plate 2 can press the middle of the workpiece 3 firmly. During abrasive flow machining, high-pressure abrasive media is pumped in through the feed inlet 11, flows through the area to be machined on the workpiece 3, and then flows out from the outlet at the top of the workpiece 3.

[0017] A sealing pouring component 9 is provided or integrally formed on the pressure plate 2, and the top end of the workpiece 3 passes upward through the sealing pouring component 9. The sealing pouring component 9 is used to isolate the top end of the workpiece 3 from the through hole 21 and guide the processed abrasive media to slide outward. After the abrasive media flows out from the outlet at the top end of the workpiece 3, it is blocked by the sealing pouring component 9, preventing the abrasive media from passing downward through the through hole 21 under the action of gravity.

[0018] like Figures 4 to 5 As shown, the sealing and unloading component 9 includes a flexible sealing ring 91. After the top end of the workpiece 3 passes through the flexible sealing ring 91, the flexible sealing ring 91 undergoes elastic deformation to wrap and adhere to the outer wall of the workpiece 3 in contact with it. The flexible sealing ring 91 is made of a sealing material with a low coefficient of friction and high elastic recovery (such as special rubber). When assembling the workpiece 3, the flexible sealing ring 91 undergoes radial contraction deformation, tightly wrapping and adhering to the outer wall of the workpiece 3, thereby forming a reliable seal. During abrasive flow machining, it can effectively prevent leakage of abrasive media while minimizing frictional damage to the surface of the workpiece 3.

[0019] A material drop platform 92 is sleeved on the outside of the flexible sealing ring 91. The material drop platform 92 is an umbrella-shaped structure that slopes outward and downward from the periphery of the flexible sealing ring 91, and its inclined surface is polished so that the processed abrasive medium slides off the sealing material dropper 9, avoiding the accumulation of abrasive medium from affecting the processing work.

[0020] like Figures 3 to 4As shown, a height-equalizing column 4 is fixedly installed on the base plate 1. In the assembled state, the top surface of the height-equalizing column 4 is in contact with the bottom surface of the pressure plate 2 to limit the distance between the pressure plate 2 and the base plate 1. The clamping force on the workpiece 3 and the relative position of the workpiece 3 in the tooling are constant, thereby eliminating the processing error caused by inconsistent clamping force and effectively avoiding crushing the workpiece 3, thus ensuring processing accuracy.

[0021] A column 5 is fixedly installed on the pressure plate 2, and a clamping element 6 is provided on the column 5. The column 5 is fixed on the pressure plate 2, serving as a force transmission frame and guide structure, and providing a fulcrum for the installation and application of force for the clamping element 6.

[0022] The receiving inlet 11 includes a receiving hole 111 for receiving the workpiece 3 and an inlet 112 for allowing the abrasive medium to enter. The receiving hole 111 provides positioning space for the workpiece 3, ensuring that the workpiece 3 is in the correct predetermined position before processing. The inlet 112 is the entrance for the high-pressure abrasive medium to enter the workpiece 3 for abrasive flow processing.

[0023] A first buffer layer 12 is provided inside the receiving hole 111. When the workpiece 3 is inserted into the receiving hole 111, the first buffer layer 12 is in direct contact with the workpiece 3.

[0024] A second buffer layer 22 is provided on the lower surface of the pressure plate 2.

[0025] The first buffer layer 12 and the second buffer layer 22 are both made of elastic materials such as polyurethane and rubber. When the workpiece 3 is loaded, the first buffer layer 12 and the second buffer layer 22 make flexible contact with the outer wall of the workpiece 3. This not only avoids damage to the surface of the workpiece 3 caused by rigid contact, but also helps to absorb and buffer the vibration generated during abrasive flow machining, preventing the workpiece 3 from displacement or surface rippling due to vibration, thereby improving the machining quality of the workpiece 3.

[0026] A positioning pin 8 is provided on the base plate 1, and a corresponding guide hole adapted to the positioning pin 8 is provided on the pressure plate 2. The positioning pin 8 is used to lock the base plate 1 and the pressure plate 2 together to prevent the relative position between the two from shifting due to vibration or other factors during abrasive flow machining.

[0027] A transition connector 7 is detachably installed below the base plate 1. The transition connector 7 is used to connect with external abrasive flow machining equipment, that is, to fix this fixture on the abrasive flow machining equipment.

[0028] Working principle: First, the workpiece 3 is placed in the receiving hole 111, and the workpiece 3 is pressed tightly by the pressure plate 2. The top of the workpiece 3 passes upward through the through hole 21 and the sealing pouring part 9. At the same time, the distance between the pressure plate 2 and the base plate 1 is precisely limited by the leveling column 4. Combined with the guidance of the positioning pin 8, it is ensured that the clamping force is constant and the position of the workpiece 3 is consistent in each clamping, laying the foundation for high-precision machining.

[0029] During abrasive flow machining, high-pressure abrasive media is pumped in through inlet 112, flows through the processing area of ​​workpiece 3, and exits from its top outlet. At this time, the flexible sealing ring 91 of the sealing pouring component 9 relies on its elastic deformation to tightly wrap around the outer wall of workpiece 3, achieving a reliable dynamic seal, blocking the downward leakage path of the abrasive media, and ensuring processing pressure and efficiency.

[0030] The abrasive medium flowing from the top of workpiece 3 will directly impact the unloading table 92 under the action of gravity, and then slide down onto the pressure plate 2 guided by the inclined surface of the unloading table 92. Due to the sealing of the sealing pouring part 9, the processed abrasive medium is prevented from falling into the through hole 21 to the bottom of the pressure plate 2. After processing, it is only necessary to clean the abrasive residue on the upper surface of the pressure plate 2 and the sealing pouring part 9, which effectively improves the convenience of cleaning work.

[0031] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A flow tooling for abrasive particles for easy cleaning, comprising a base plate (1) and a pressure plate (2), characterized in that: The base plate (1) has a feeding hole (11) and the pressure plate (2) has a through hole (21). A workpiece (3) is placed in the feeding hole (11) and the workpiece (3) passes through the through hole (21) upward. The pressure plate (2) is provided with or integrally formed with a sealing pouring component (9), and the top end of the workpiece (3) passes upward through the sealing pouring component (9). The sealing pouring component (9) is used to isolate the top end of the workpiece (3) from the through hole (21) and guide the processed abrasive medium to slide down.

2. An abrasive particle fluid processing tooling for ease of cleaning according to claim 1, wherein: The sealing pouring component (9) includes a flexible sealing ring (91). After the top end of the workpiece (3) passes through the flexible sealing ring (91), the flexible sealing ring (91) undergoes elastic deformation to wrap and adhere to the outer wall of the workpiece (3) in contact with it. The flexible sealing ring (91) is fitted with a material drop platform (92) on its outer side. The material drop platform (92) is an umbrella-shaped structure that slopes outward and downward from the periphery of the flexible sealing ring (91), so that the processed abrasive medium slides off the sealing material dropper (9).

3. An abrasive particle fluid processing tooling for ease of cleaning according to claim 1, wherein: A leveling column (4) is fixedly installed on the base plate (1). In the assembled state, the top surface of the leveling column (4) is in contact with the bottom surface of the pressure plate (2) to limit the distance between the pressure plate (2) and the base plate (1) and ensure processing accuracy.

4. An abrasive particle fluid processing tooling for ease of cleaning according to claim 1, wherein: A column (5) is fixedly installed on the pressure plate (2), and a clamping element (6) is provided on the column (5).

5. An abrasive particle fluid processing tooling for ease of cleaning according to claim 1 wherein: The receiving inlet (11) includes a receiving hole (111) for receiving the workpiece (3) and an inlet (112) for allowing the abrasive medium to enter.

6. An abrasive particle fluid processing tooling for ease of cleaning according to claim 5 wherein: A first buffer layer (12) is provided inside the receiving hole (111). When the workpiece (3) is put into the receiving hole (111), the first buffer layer (12) is in direct contact with the workpiece (3).

7. An abrasive particle fluid processing tooling for ease of cleaning according to claim 6 wherein: The lower surface of the pressure plate (2) is provided with a second buffer layer (22).

8. An abrasive particle fluid processing tooling for ease of cleaning according to claim 1 wherein: The base plate (1) is provided with a positioning pin (8), and the pressure plate (2) is provided with a guide hole that matches the positioning pin (8).

9. An abrasive particle fluid processing tooling for ease of cleaning according to claim 1 wherein: A transition connector (7) is detachably installed below the base plate (1).

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