A multi-workpiece lamination abrasive grain flow machining tool

Abstract

The utility model relates to abrasive particle fluid polishing technical equipment field, concretely relates to a kind of multi-workpiece laminated abrasive particle flow processing frock, including base and pressing plate, the base is provided with positioning plate, the base is located positioning block around positioning plate and is provided with, the positioning plate and the positioning block form accommodating cavity between, multiple layers of workpiece are placed in the accommodating cavity and are stacked, after moulding, the pressing plate will the workpiece be pressed tightly, adjusting groove is set up on the positioning block, locking element is arranged in adjusting groove, the fixed hole that is compatible with the locking element is set up in the base below adjusting groove, adjusting groove is longer than the fixed hole, and the length direction of adjusting groove is parallel with the workpiece radial direction. Solve the problem of the limited number of workpieces processed during abrasive particle flow processing in the prior art and low production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of abrasive fluid polishing technology and equipment, and in particular to a multi-workpiece stacked abrasive fluid processing fixture. Background Technology

[0002] Abrasive flow machining is an innovative, non-traditional precision machining process. Its core principle is to use a viscoelastic medium containing abrasive particles, driven by a high-pressure environment, to force it through the surface or internal cavity of the workpiece. At the same time, the abrasive particles interact with the workpiece surface through micro-cutting, scratching, and rolling, thereby achieving a variety of machining objectives.

[0003] However, most existing abrasive flow machining fixtures employ relatively traditional designs, primarily focusing on the fixation and sealing of single or small numbers of workpieces. This design exposes serious efficiency problems when facing large-scale production demands. Specifically, existing fixtures can only clamp 1-2 workpieces at a time, meaning a limited number of workpieces can be processed within the same timeframe. In today's manufacturing industry, which pursues high-efficiency production, this inefficient processing method not only increases production costs and extends production cycles but also fails to meet market demands for rapid product delivery. Based on the problems in the existing technology, this invention provides a multi-workpiece stacked abrasive flow machining fixture. Utility Model Content

[0004] The purpose of this invention is to provide a multi-workpiece stacked abrasive flow machining fixture to solve the problems of limited workpiece quantity and low production efficiency in existing abrasive flow machining technology.

[0005] The technical solution of this utility model is: a multi-workpiece stacked abrasive flow machining fixture, including a base and a pressure plate. A positioning plate is provided on the base, and positioning blocks are provided on the base around the positioning plate. A slot is opened on the positioning plate, and a receiving cavity is formed between the slot and the positioning block. Multiple layers of workpieces are stacked in the receiving cavity. After the mold is closed, the pressure plate presses the workpieces together.

[0006] Preferably, the positioning block has an adjustment groove, a locking element is inserted in the adjustment groove, and the base has a fixing hole adapted to the locking element located below the adjustment groove.

[0007] Preferably, the adjusting groove is longer than the fixing hole, and the length direction of the adjusting groove is parallel to the radial direction of the workpiece.

[0008] Preferably, after the locking element passes through the adjusting groove and is inserted into the fixing hole, the positioning block is fixed on the base; The positioning block adjusts its radial position on the base through the cooperation of the adjusting groove and the locking element, thereby changing the size of the receiving cavity between the positioning plate and the positioning block. The receiving cavity is adapted to the clamping requirements of workpieces of different sizes.

[0009] Preferably, both the upper surface of the base and the lower surface of the pressure plate are provided with a buffer layer.

[0010] Preferably, the buffer layer is made of an elastic and wear-resistant material, preferably a polyurethane-coated material.

[0011] Preferably, a sleeve is also installed on the base outside the workpiece, and the sleeve is at the same height as the stacked workpieces.

[0012] Preferably, two guide limiting members are evenly fixed on the base, and the pressure plate is provided with a through hole that matches each of the guide limiting members. When the mold is closed, the guide limiting members pass upward through the through hole.

[0013] Preferably, a transition flange is installed below the base.

[0014] Preferably, the workpiece is stacked in five layers at a time.

[0015] Compared with the prior art, the advantages of this utility model are: (1) By setting up a cavity between the positioning plate and the positioning block, and by stacking the workpieces, multiple workpieces can be clamped at the same time. Compared with the existing tooling which can only clamp 1-2 workpieces at a time, this greatly increases the number of workpieces processed in the same time and effectively improves the efficiency of abrasive flow processing. (2) By opening an adjustment groove on the positioning block and setting a fixing hole on the base that matches the locking element, the positioning block can be radially adjusted on the base through the cooperation of the adjustment groove and the locking element. By moving the positioning block, different positions on the adjustment groove correspond to the fixing hole and the locking element is assembled, the size of the cavity between the positioning plate and the positioning block can be changed, thereby adapting to the clamping requirements of workpieces of different sizes and enhancing the versatility and flexibility of the tooling. (3) By setting up a design that stacks five layers of workpiece at a time, although there will be residual abrasive in the tooling after processing, it can effectively prevent the abrasive from entering the sleeve and making it difficult to clean. Compared with other workpiece placement methods, it is beneficial to save time for cleaning abrasive and improve overall production efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic cross-sectional view of the overall assembly of the multi-workpiece stacked abrasive flow machining tooling described in this utility model; Figure 2 This is a schematic diagram of the overall assembly of the multi-workpiece stacked abrasive flow machining tooling described in this utility model; Figure 3 This is a schematic diagram of the internal structure of the multi-workpiece stacked abrasive flow machining tooling described in this utility model; Figure 4 This is a top view of the interior of the multi-workpiece stacked abrasive flow machining fixture of this utility model; Figure 5 This utility model Figure 4 Enlarged view of region A in the middle; The components are: 1. base; 2. positioning plate; 21. slot; 3. positioning block; 31. adjusting groove; 32. locking element; 4. pressure plate; 41. through hole; 5. workpiece; 6. buffer layer; 7. sleeve; 8. guide limit component; 9. transition flange. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1 to 3 As shown, a multi-workpiece stacked abrasive flow machining fixture includes a base 1 and a pressure plate 4. A positioning plate 2 is mounted on the base 1, and a slot 21 is formed on the positioning plate 2. Positioning blocks 3 are arranged around the positioning plate 2 on the base 1. A receiving cavity is formed between the slot 21 and the positioning blocks 3, and multiple layers of workpieces 5 are stacked within the receiving cavity. The slot 21 is designed according to the shape of the workpieces 5 to be processed, allowing the workpieces 5 to be stably fixed within the receiving cavity. During abrasive flow machining, the viscoelastic medium, driven by high pressure, passes through the stacked workpieces 5. The abrasive particles interact with the surface of the workpieces 5 through micro-cutting, scratching, and rolling, thus machining the workpieces 5. The receiving cavity formed between the positioning plate 2 and the positioning blocks 3, along with the stacked placement of the workpieces 5, facilitates increasing the number of workpieces 5 processed simultaneously during abrasive flow machining, thereby improving processing efficiency.

[0018] After the mold is closed, the pressure plate 4 presses the workpiece 5 tightly to ensure the stability of the workpiece 5 during the abrasive flow machining process.

[0019] like Figure 4 and Figure 5 As shown, the positioning block 3 has an adjustment groove 31, and a locking element 32 passes through the adjustment groove 31. The base 1 has a fixing hole below the adjustment groove 31 that matches the locking element 32. The locking element 32 passes through the adjustment groove 31 and is inserted into the fixing hole to fix the positioning block 3 on the base 1.

[0020] The adjusting groove 31 is longer than the fixed hole, and the length direction of the adjusting groove 31 is parallel to the radial direction of the workpiece 5.

[0021] After the locking element 32 passes through the adjusting groove 31 and is inserted into the fixing hole, the positioning block 3 is fixed on the base 1. The positioning block 3 achieves radial position adjustment on the base 1 through the cooperation of the adjusting groove 31 and the locking element 32. Specifically, by moving the positioning block 3 so that different positions on the adjusting groove 31 correspond to the fixing hole, and then assembling the locking element 32, the size of the receiving cavity between the positioning plate 2 and the positioning block 3 can be changed to adapt to the clamping requirements of workpieces 5 of different sizes.

[0022] like Figure 1 As shown, a buffer layer 6 is installed on the upper surface of the base 1 and the lower surface of the pressure plate 4. During abrasive flow machining, the buffer layer 6 can effectively buffer the pressure of the base 1 and the pressure plate 4 on the workpiece 5, preventing the workpiece 5 from deforming due to excessive pressure, while reducing vibration during machining and improving the machining quality of the workpiece 5.

[0023] The buffer layer 6 is made of an elastic and wear-resistant material, preferably polyurethane overmolding. Compared with other common materials such as rubber and silicone, overmolded polyurethane has a longer service life and better performance stability.

[0024] like Figure 1 As shown, a sleeve 7 is also installed on the base 1 outside the workpiece 5, and the sleeve 7 is at the same height as the stacked workpieces 5. The sleeve 7 is made of high-strength material. When the mold is closed, the sleeve 7 can evenly distribute the pressure, which helps to avoid deformation of the workpiece 5 and damage to the polyurethane due to excessive mold closing pressure, and at the same time protects the workpiece 5.

[0025] like Figure 1 As shown, two guide limiting members 8 are evenly fixed on the base 1, and the pressure plate 4 has through holes 41 that are adapted to each guide limiting member 8. When the mold is closed, the guide limiting member 8 passes upward through the through holes 41 to guide the pressure plate 4.

[0026] like Figure 1 As shown, a transition flange 9 is installed below the base 1. The transition flange 9 is used to connect this tooling to the abrasive flow machining equipment. By adjusting the installation position of the transition flange 9, a good fit between the tooling and the machining equipment can be ensured, thereby improving the stability and reliability of the machining process.

[0027] Workpiece 5 is stacked in five layers at a time. After processing, residual abrasive remains in the tooling. To prevent abrasive from entering the sleeve 7 and making it difficult to clean, the design of stacking workpiece 5 in five layers at a time helps to save time for cleaning abrasive.

[0028] In use, firstly, smoothly connect the entire fixture to the abrasive flow machining equipment via the transition flange 9. Then, according to the size of the workpiece 5, move the positioning block 3 so that the appropriate position on the adjusting groove 31 corresponds to the fixing hole on the base 1. Then, insert the locking element 32 and lock it, thereby adjusting the size of the receiving cavity to match the workpiece 5.

[0029] Next, the workpieces 5 are stacked in sequence in the receiving cavity, and then the mold is closed. The pressure plate 4 is pressed down, and the guide and limiting member 8 passes through the through hole 41 to achieve the guiding and positioning of the pressure plate 4. As the pressure plate 4 is pressed down, the buffer layer 6 plays a buffering role.

[0030] Finally, the abrasive flow machining equipment is started. Under high pressure, the viscoelastic medium carries abrasive particles through the stacked workpieces 5. The abrasive particles interact with the surface of workpieces 5 through micro-cutting, scratching, and rolling, thus completing the machining of workpieces 5. After machining, the tooling is disassembled in reverse order, and any residual abrasive material inside the tooling is cleaned.

[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 multi-workpiece stacked abrasive flow machining fixture, comprising a base (1) and a pressure plate (4), characterized in that: A positioning plate (2) is provided on the base (1), and a slot (21) is provided on the positioning plate (2). A positioning block (3) is provided on the base (1) around the positioning plate (2). A receiving cavity is formed between the slot (21) and the positioning block (3). Multiple layers of workpieces (5) are stacked in the receiving cavity. After the mold is closed, the pressure plate (4) presses the workpieces (5) tightly.

2. A multi-workpiece lamination abrasive flow machining tooling kit according to claim 1, wherein: The positioning block (3) has an adjustment groove (31) and a locking element (32) is inserted in the adjustment groove (31). The base (1) has a fixing hole adapted to the locking element (32) located below the adjustment groove (31).

3. A multi-workpiece lamination abrasive flow machining tooling kit according to claim 2, wherein: The adjusting groove (31) is longer than the fixing hole, and the length direction of the adjusting groove (31) is radially parallel to the workpiece (5).

4. A multi-workpiece lamination abrasive flow machining tooling kit according to claim 3, wherein: After the locking element (32) passes through the adjustment groove (31) and is inserted into the fixing hole, the positioning block (3) is fixed on the base (1); the positioning block (3) achieves radial position adjustment on the base (1) through the cooperation of the adjustment groove (31) and the locking element (32), changing the size of the receiving cavity between the positioning plate (2) and the positioning block (3), and the receiving cavity is adapted to the clamping requirements of workpieces (5) of different sizes.

5. A multi-workpiece lamination abrasive flow processing kit as defined in claim 1, wherein: Both the upper surface of the base (1) and the lower surface of the pressure plate (4) are equipped with a buffer layer (6).

6. A multi-workpiece lamination abrasive flow machining kit as defined in claim 5, wherein: The buffer layer (6) is made of an elastic and wear-resistant material, and polyurethane coating material is selected.

7. A multi-workpiece lamination abrasive flow machining kit as defined in claim 1, wherein: A sleeve (7) is also installed on the base (1) outside the workpiece (5), and the sleeve (7) is at the same height as the stacked workpieces (5).

8. A multi-workpiece lamination abrasive flow machining kit as defined in claim 1, wherein: Two guide limiting members (8) are evenly fixed on the base (1), and the pressure plate (4) is provided with a through hole (41) that matches each of the guide limiting members (8). When the mold is closed, the guide limiting member (8) passes through the through hole (41) upward.

9. The multi-workpiece lamination abrasive flow processing tooling of claim 1, wherein: A transition flange (9) is installed below the base (1).

10. The multi-workpiece lamination abrasive flow machining tooling kit of claim 1, wherein: The workpiece (5) is stacked in five layers at a time.

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