Jig special for linear cutting machining of aeronautical parts

Abstract

The utility model discloses a special jig for aeronautical part linear cutting machining, which comprises a base, positioning plates are mounted on two sides of the base, two moving plates are arranged between the two positioning plates, a part is arranged between each positioning plate and the moving plate which are adjacent, first sliding blocks are mounted on sides, close to each other, of the two moving plates, and second sliding blocks are mounted on the sides, close to each other, of the two moving plates. The two first sliding blocks are rotationally connected with first connecting rods, the ends, away from the first sliding blocks, of the two first connecting rods are rotationally connected to the same second sliding block, the second sliding block is connected with the output end of a hydraulic rod, and the hydraulic rod is installed on the base. The production time is effectively shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting fixture technology, and in particular to a special fixture for wire EDM processing of aerospace parts. Background Technology

[0002] Electrical discharge wire cutting, or simply "wire cutting," is a machining process that uses an electrode wire (such as molybdenum wire or tungsten-molybdenum wire) as the tool electrode. Under the action of a pulsed power supply, a spark discharge is formed between the tool electrode and the workpiece. The spark channel instantly generates a large amount of heat, causing the workpiece surface to melt or even vaporize. The wire cutting machine tool moves the electrode wire along a predetermined trajectory through the movement of the XY and UV plates, thereby achieving the purpose of machining the workpiece.

[0003] Utility model CN207710047U discloses a special clamping fixture for wire cutting in mold production, including a fixed stop block installed on the upper left side of the base. An anti-slip block is provided on the outer right side of the fixed stop block, and a buffer pressure reducer is provided to the right of the anti-slip block. This utility model adds a buffer pressure reducer to the front of the movable clamping block, i.e., the surface subjected to compression, to better protect the clamped item from damage during clamping, thus ensuring a high success rate and saving on operating costs. Furthermore, this buffer pressure reducer avoids the problem of loosening of items caused by prolonged placement after clamping, preventing items from falling off. It also improves upon the traditional method of manually operating the movable lever by having a motor drive the lever to clamp the item, avoiding errors caused by manual clamping and greatly increasing ease of use.

[0004] The device disclosed in the above-mentioned utility model is only applicable to the fixed operation of a single part, resulting in low production efficiency. Furthermore, the device can only position two sides of the part, which cannot meet the needs of more precise production. Utility Model Content

[0005] The purpose of this utility model is to provide a special fixture for wire EDM processing of aerospace parts, so as to solve the problems of low production efficiency and inability to meet more precise production needs mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special fixture for wire cutting of aerospace parts, including a base, with positioning plates installed on both sides of the base, and two movable plates arranged between the two positioning plates. A part is arranged between each adjacent positioning plate and movable plate. A first slider is installed on the side of the two movable plates that is close to each other. A first connecting rod is rotatably connected to each of the two first sliders. The ends of the two first connecting rods away from the first sliders are rotatably connected to the same second slider. The output end of a hydraulic rod is connected to the second slider, and the hydraulic rod is installed on the base.

[0007] Preferably, a first slide rail is installed on the base, and two first sliders are respectively slidably adapted to both ends of the first slide rail.

[0008] Preferably, a second slide rail is installed on the base, and a second slider is slidably adapted to the second slide rail.

[0009] Preferably, rubber pads are slidably mounted on both positioning plates and the moving plate, with the rubber pads located on both sides of the part.

[0010] Preferably, a baffle is installed on the side of the base near the hydraulic rod, and two movable blocks are slidably connected on the base. The two movable blocks are in a relative position to the baffle and are located between two adjacent positioning plates and movable plates.

[0011] Preferably, the base has two movable slots that are adapted to the movable block.

[0012] Preferably, the base has a cavity that is connected to two movable slots. The bottom ends of the two movable blocks are located in the cavity and connected to the same second connecting rod. A threaded rod is threadedly connected to the second connecting rod. The threaded rod is rotatably connected to the cavity, and a motor is connected to the end of the threaded rod away from the second connecting rod. The motor is mounted on the wall of the cavity.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, the part is placed on the base between the positioning plate and the moving plate. Then, the hydraulic rod is activated, and the output axis of the hydraulic rod moves in the direction of the main body, causing the second slider to move synchronously. This causes the ends of the two first connecting rods away from the hydraulic rod to move towards the hydraulic rod body, thereby driving the two first sliders to move towards the two positioning plates. This, in turn, causes the two moving plates to move in the same direction, contacting the part during the movement and moving the part towards the adjacent positioning plate until the part is securely confined between the adjacent positioning plate and the moving plate, thus completing the positional constraint of the part. This device is simple to operate, and the positioning of two parts can be completed by using the positioning plate and the moving plate, effectively reducing production time and improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a special fixture for wire cutting of aerospace parts proposed in this utility model;

[0016] Figure 2 This is a top view of a special fixture for wire cutting of aerospace parts proposed in this utility model.

[0017] Figure 3This is a cross-sectional view of the second connecting rod of a special fixture for wire cutting of aerospace parts proposed in this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the threaded rod of a special fixture for wire EDM machining of aerospace parts proposed in this utility model.

[0019] In the diagram: 1. Base; 2. Positioning plate; 3. Moving plate; 4. First slider; 5. First connecting rod; 6. Second slider; 7. Hydraulic rod; 8. Part; 9. First slide rail; 10. Second slide rail; 11. Rubber pad; 12. Baffle; 13. Moving block; 14. Moving groove; 15. Cavity; 16. Second connecting rod; 17. Threaded rod; 18. Motor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A special fixture for wire cutting of aerospace parts includes a base 1, with positioning plates 2 installed on both sides of the base 1. Two movable plates 3 are arranged between the two positioning plates 2. A part 8 is arranged between each adjacent positioning plate 2 and movable plate 3. A first slider 4 is installed on the side of the two movable plates 3 that is close to each other. A first connecting rod 5 is rotatably connected to each of the two first sliders 4. The ends of the two first connecting rods 5 that are away from the first sliders 4 are rotatably connected to the same second slider 6. The output end of a hydraulic rod 7 is connected to the second slider 6. The hydraulic rod 7 is installed on the base 1.

[0022] When using this device, first place part 8 on the base 1 between positioning plate 2 and moving plate 3. Then, start the hydraulic rod 7. The output axis of the hydraulic rod 7 moves in the direction of the main body, causing the second slider 6 to move synchronously. This causes the ends of the two first connecting rods 5 away from the hydraulic rod 7 to move towards the main body of the hydraulic rod 7, thereby driving the two first sliders 4 to move towards the two positioning plates 2. This, in turn, causes the two moving plates 3 to move in the same direction, contacting part 8 during the movement and moving part 8 towards the adjacent positioning plate 2 until part 8 is securely fixed between the adjacent positioning plate 2 and moving plate 3, thus completing the position setting of part 8. This device is simple to operate, and the positioning of two parts 8 can be completed by using positioning plate 2 and moving plate 3, effectively reducing production time and improving work efficiency.

[0023] Specifically, in this embodiment, a first slide rail 9 is installed on the base 1, and two first sliders 4 are respectively slidably adapted to the two ends of the first slide rail 9, so that the first sliders 4 can only move along the direction of the first slide rail 9 when they move, thereby avoiding the deviation of the direction of movement of the first sliders 4, and thus ensuring the accuracy of the movement direction of the two moving plates 3.

[0024] Specifically, in this embodiment, a second slide rail 10 is installed on the base 1, and the second slider 6 is slidably adapted to the second slide rail 10. The second slide rail 10 provides guidance for the movement direction of the second slider 6, so that the second slider 6 can only move along the direction of the second slide rail 10. This ensures the accuracy of the movement of the two first connecting rods 5, and further ensures that the two moving plates 3 move the same distance, thereby accurately limiting the two parts 8.

[0025] Specifically, in this embodiment, rubber pads 11 are slidably installed on both positioning plates 2 and the moving plate 3. The rubber pads 11 are located on both sides of the part 8, so that when the moving plate 3 pushes the part 8 to move in the direction of the corresponding positioning plate 2, the part 8 first contacts the rubber pads 11 on both sides, thereby providing protection for it through the rubber pads 11 and avoiding wear during positioning of the part 8.

[0026] Specifically, in this embodiment, a baffle 12 is installed on the side of the base 1 near the hydraulic rod 7. Two moving blocks 13 are slidably connected on the base 1. The two moving blocks 13 are in relative positions to the baffle 12 and are located between two adjacent positioning plates 2 and moving plates 3. This allows the operator to adjust the position of the moving blocks 13 to push the part 8 to a position that contacts the baffle 12 before the part 8 is completely confined between the positioning plates 2 and the moving plates 3, thereby improving the accuracy of the position of the part 8 and thus better performing subsequent cutting operations.

[0027] Specifically, in this embodiment, two movable slots 14 are provided on the base 1. The movable slots 14 are adapted to the movable block 13, so that the movable block 13 can move along the direction of the movable slots 14 on the base 1 through the provision of the movable slots 14, thereby providing a guarantee for the movement of the movable block 13.

[0028] Specifically, in this embodiment, a cavity 15 is provided on the base 1, and the cavity 15 is connected to two moving slots 14. The bottom ends of the two moving blocks 13 are located in the cavity 15 and are connected to the same second connecting rod 16. A threaded rod 17 is threadedly connected to the second connecting rod 16. The threaded rod 17 is rotatably connected to the cavity 15, and a motor 18 is connected to the end of the threaded rod 17 away from the second connecting rod 16. The motor 18 is installed on the wall of the cavity 15, so that when the motor 18 rotates, it can drive the threaded rod 17 to rotate synchronously, thereby causing the second connecting rod 16 threadedly connected to the threaded rod 17 to reciprocate along the direction of the threaded rod 17, thereby driving the two moving blocks 13 to move synchronously, thus confining the part 8 between the baffle 12 and the moving blocks 13.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A special fixture for wire cutting of aerospace parts, comprising a base (1), characterized in that: Positioning plates (2) are installed on both sides of the base (1). Two movable plates (3) are arranged between the two positioning plates (2). A part (8) is arranged between each adjacent positioning plate (2) and movable plate (3). A first slider (4) is installed on the side of the two movable plates (3) that are close to each other. A first connecting rod (5) is rotatably connected to each of the two first sliders (4). The ends of the two first connecting rods (5) that are away from the first sliders (4) are rotatably connected to the same second slider (6). The output end of a hydraulic rod (7) is connected to the second slider (6). The hydraulic rod (7) is installed on the base (1).

2. The special fixture for wire EDM machining of aerospace parts according to claim 1, characterized in that: The base (1) is equipped with a first slide rail (9), and two first sliders (4) are respectively slidably adapted to the two ends of the first slide rail (9).

3. The special fixture for wire cutting of aerospace parts according to claim 1, characterized in that: A second slide rail (10) is installed on the base (1), and a second slider (6) is slidably adapted to the second slide rail (10).

4. The special fixture for wire cutting of aerospace parts according to claim 1, characterized in that: Rubber pads (11) are slidably installed on both positioning plates (2) and moving plate (3), and the rubber pads (11) are located on both sides of part (8).

5. A special fixture for wire cutting of aerospace parts according to claim 1, characterized in that: A baffle (12) is installed on the side of the base (1) near the hydraulic rod (7). Two moving blocks (13) are slidably connected on the base (1). The two moving blocks (13) are in relative positions to the baffle (12) and are located between two adjacent positioning plates (2) and moving plates (3).

6. A special fixture for wire cutting of aerospace parts according to claim 5, characterized in that: The base (1) has two movable slots (14) that are adapted to the movable block (13).

7. A special fixture for wire EDM machining of aerospace parts according to claim 6, characterized in that: The base (1) has a cavity (15) connected to two moving slots (14). The bottom ends of the two moving blocks (13) are located in the cavity (15) and connected to the same second connecting rod (16). A threaded rod (17) is threadedly connected to the second connecting rod (16). The threaded rod (17) is rotatably connected to the cavity (15), and a motor (18) is connected to the end of the threaded rod (17) away from the second connecting rod (16). The motor (18) is installed on the wall of the cavity (15).

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