Ceramic matrix composite machining fixture

Abstract

The utility model belongs to the technical field of ceramic matrix composite, especially a ceramic matrix composite processing clamp, including operation platform, the one side of operation platform top outer wall is connected with the pneumatic cylinder through screw fixedly, and the piston rod of pneumatic cylinder is fixedly connected with the flat push frame, the one side outer wall of flat push frame is fixedly connected with the vertical slide rail of equidistance distribution through screw, and the inner wall of vertical slide rail is rotatably connected with the lead screw. The utility model discloses the cooperation design through spring and telescopic column, and the clamping plate can buffer the thrust of pneumatic cylinder when contacting workpiece, avoids the material cracking caused by instantaneous pressure too big, simultaneously, the lifting frame slides along the vertical slide rail, and the height is adjusted in combination with the lead screw, realizes the dynamic balance of clamping force, significantly reduces workpiece damage risk, and the gasket and side baffle form stable support surface, cooperate with the smooth track guidance of flat push frame, can adapt to the ceramic matrix composite board of different size, and the dust fall mouth directly collects the processing debris, keeps the operation platform clean.

Description

Technical Field

[0001] This utility model relates to the field of ceramic matrix composite technology, and in particular to a ceramic matrix composite processing fixture. Background Technology

[0002] Ceramic matrix composites are high-performance materials made by adding reinforcing phases such as fibers and particles to ceramic as the matrix. They possess excellent properties such as high strength, high hardness, high temperature resistance, and corrosion resistance, and are widely used in aerospace, electronics, and machinery. However, ceramic matrix composites are prone to brittle fracture and surface damage during processing, which places extremely high demands on the stability and precision of processing fixtures.

[0003] Existing machining fixtures have the following shortcomings:

[0004] 1. Inaccurate clamping force control: Traditional clamps mostly use mechanical clamping and lack a buffer mechanism, which can easily cause material damage due to excessive clamping force.

[0005] 2. Poor adaptability: The fixture structure is fixed and it is difficult to adapt to workpieces of different thicknesses or shapes. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a ceramic matrix composite material processing fixture, which overcomes the shortcomings of the prior art and effectively solves the problems of inaccurate clamping force control and poor adaptability.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A ceramic matrix composite material processing fixture includes an operating table. A cylinder is fixedly connected to one side of the top outer wall of the operating table by screws, and a horizontal pusher is fixedly connected to the piston rod of the cylinder. A vertical slide rail with equal spacing is fixedly connected to one side outer wall of the horizontal pusher by screws, and a lead screw is rotatably connected to the inner wall of the vertical slide rail. A lifting frame is screwed to the outer wall of the lead screw, and a telescopic column is slidably connected to the inner wall of one end of the lifting frame. A clamping plate is welded to the outer wall of one end of the telescopic column, and a spring is fixedly connected between the telescopic column and the lifting frame.

[0009] Preferably, the lifting frame is slidably connected to the outer wall of the vertical slide rail, and the spring is located inside the lifting frame.

[0010] Preferably, the top outer wall of the operating table is fixedly connected to smooth rails on both sides of the cylinder by screws, and a slider is slidably connected to the outer wall of the smooth rail, the slider being fixedly connected to the bottom outer wall of the push frame by screws.

[0011] Preferably, an array of pads are welded to the top outer wall of the operating table, and a ceramic-based composite plate is placed on the top outer wall of the pads.

[0012] Preferably, a side baffle is welded to the outer wall of the top of the operating table away from the cylinder, and the ceramic-based composite plate is tightly attached between the side baffle and the clamping plate.

[0013] Preferably, the bottom outer wall of the operating table has a dust collection port located below the ceramic-based composite plate.

[0014] Preferably, a controller is installed on the bottom outer wall of the operating table, and a control switch is installed on one side outer wall of the operating table, and the control switch is connected to the controller and the cylinder via signal lines.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The ceramic matrix composite material processing fixture designed in this paper uses a combination of springs and telescopic columns. When the clamping plate contacts the workpiece, it can buffer the thrust of the cylinder and avoid the material cracking due to excessive instantaneous pressure. At the same time, the lifting frame slides along the vertical slide rail and the height is adjusted by the lead screw to achieve dynamic balance of clamping force, which significantly reduces the risk of workpiece damage.

[0017] 2. The ceramic matrix composite processing fixture designed in this paper has a stable support surface formed by the pads and side baffles. With the smooth rail guide of the flat push frame, it can adapt to ceramic matrix composite plates of different sizes. The dust outlet directly collects processing debris, keeping the operating table clean. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a ceramic matrix composite material processing fixture proposed in this utility model. Figure 1 ;

[0019] Figure 2 This is a three-dimensional schematic diagram of the overall structure of a ceramic matrix composite material processing fixture proposed in this utility model. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the vertical slide rail connection structure of a ceramic matrix composite material processing fixture proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the operating table structure of a ceramic matrix composite material processing fixture proposed in this utility model.

[0022] In the diagram: 1. Control panel; 2. Cylinder; 3. Horizontal push frame; 4. Vertical slide rail; 5. Lead screw; 6. Lifting frame; 7. Telescopic column; 8. Clamping plate; 9. Spring; 10. Smooth rail; 11. Slider; 12. Pad; 13. Side baffle; 14. Dust outlet; 15. Controller; 16. Control switch. Detailed Implementation

[0023] 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.

[0024] Reference Figures 1-4 Example 1: A ceramic matrix composite material processing fixture includes an operating table 1. A cylinder 2 is fixedly connected to one side of the top outer wall of the operating table 1 by screws, and the piston rod of the cylinder 2 is fixedly connected to a flat push frame 3. Smooth rails 10 are fixedly connected to both sides of the top outer wall of the operating table 1 on the cylinder 2 by screws, and sliders 11 are slidably connected to the outer wall of the smooth rails 10. The sliders 11 are fixedly connected to the bottom outer wall of the flat push frame 3 by screws.

[0025] The cylinder 2 is fixed to the top of the operating table 1 with screws. Its piston rod pushes the flat pusher 3 to move horizontally along the smooth rail 10. The slider 11 ensures smooth sliding, which solves the problem of workpiece displacement caused by rigid propulsion in traditional fixtures. Precise positioning is achieved by guiding the guide rail.

[0026] In this embodiment, through the combined design of spring 9 and telescopic column 7, clamping plate 8 can buffer the thrust of cylinder 2 when contacting workpiece, avoiding material cracking caused by excessive instantaneous pressure. At the same time, lifting frame 6 slides along vertical slide rail 4, and adjusts the height in combination with lead screw 5 to achieve dynamic balance of clamping force, significantly reducing the risk of workpiece damage.

[0027] In embodiment 2, the outer wall of one side of the push frame 3 is fixedly connected with equally spaced vertical slide rails 4 by screws, and a lead screw 5 is rotatably connected to the inner wall of the vertical slide rail 4. A lifting frame 6 is screwed to the outer wall of the lead screw 5, and a telescopic column 7 is slidably connected to the inner wall of one end of the lifting frame 6. A clamping plate 8 is welded to the outer wall of one end of the telescopic column 7, and a spring 9 is fixedly connected between the telescopic column 7 and the lifting frame 6. The lifting frame 6 is slidably connected to the outer wall of the vertical slide rail 4, and the spring 9 is located inside the lifting frame 6.

[0028] The lead screw 5 inside the vertical slide rail 4 drives the lifting frame 6 to move up and down, adjusting the height of the clamping plate 8 to accommodate different workpieces. The telescopic column 7 extends and retracts under the action of the spring 9, automatically compensating for pressure during clamping and avoiding overload. The pads 12 are distributed in an array to ensure uniform force on the bottom surface of the workpiece; the side baffle 13 and the clamping plate 8 form a bidirectional limiting mechanism to prevent the workpiece from sliding during processing.

[0029] In this embodiment, the pad 12 and the side baffle 13 form a stable support surface, which, together with the smooth rail 10 of the pusher 3, can be guided to accommodate ceramic-based composite plates of different sizes. The dust outlet 14 directly collects processing debris, keeping the operating table 1 clean.

[0030] The top outer wall of the operating table 1 is welded with an array of pads 12, and a ceramic-based composite plate is placed on the top outer wall of the pads 12. A side baffle 13 is welded to the end of the top outer wall of the operating table 1 away from the cylinder 2, and the ceramic-based composite plate is tightly attached between the side baffle 13 and the clamping plate 8.

[0031] The bottom outer wall of the operating table 1 is provided with a dust collection port 14 located below the ceramic-based composite plate.

[0032] The dust collection port 14 is located directly below the workpiece, and the debris falls into the collection device by gravity, avoiding secondary pollution.

[0033] A controller 15 is installed on the bottom outer wall of the operating console 1, and a control switch 16 is installed on one side outer wall of the operating console 1. The control switch 16 is connected to the controller 15 and the cylinder 2 via signal lines.

[0034] The controller 15 receives the signal from the control switch 16 and adjusts the start and stop of the cylinder 2 to achieve semi-automatic operation.

[0035] Working principle: First, place the ceramic-based composite plate on the pad 12, close to the side baffle 13. Start the cylinder 2 through the control switch 16 to push the flat push frame 3 forward along the smooth rail 10, causing the clamping plate 8 to contact the workpiece. The spring 9 is compressed to buffer the initial impact. The height of the lifting frame 6 can be manually adjusted by the lead screw 5 to ensure that the clamping surface matches the workpiece. After the workpiece is fixed, the chips generated during processing are discharged through the dust outlet 14. After processing is completed, the cylinder 2 retracts, the clamping plate 8 is reset under the action of the spring 9, and the workpiece can be safely removed.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ceramic matrix composite material processing fixture, comprising an operating table (1), characterized in that, A cylinder (2) is fixedly connected to one side of the top outer wall of the operating table (1) by screws, and a flat push frame (3) is fixedly connected to the piston rod of the cylinder (2). A vertical slide rail (4) with equal distances is fixedly connected to one side of the outer wall of the flat push frame (3) by screws, and a lead screw (5) is rotatably connected to the inner wall of the vertical slide rail (4). A lifting frame (6) is screwed to the outer wall of the lead screw (5), and a telescopic column (7) is slidably connected to the inner wall of one end of the lifting frame (6). A clamp (8) is welded to the outer wall of one end of the telescopic column (7), and a spring (9) is fixedly connected between the telescopic column (7) and the lifting frame (6).

2. The ceramic matrix composite material processing fixture according to claim 1, characterized in that, The lifting frame (6) is slidably connected to the outer wall of the vertical slide rail (4), and the spring (9) is located inside the lifting frame (6).

3. A ceramic matrix composite material processing fixture according to claim 1, characterized in that, The top outer wall of the operating table (1) is fixedly connected to the smooth rail (10) on both sides of the cylinder (2) by screws, and the smooth rail (10) is slidably connected to the outer wall of the smooth rail (10), and the slider (11) is fixedly connected to the bottom outer wall of the flat push frame (3) by screws.

4. A ceramic matrix composite material processing fixture according to claim 1, characterized in that, The top outer wall of the operating table (1) is welded with an array of pads (12), and a ceramic-based composite plate is placed on the top outer wall of the pads (12).

5. A ceramic matrix composite material processing fixture according to claim 1, characterized in that, The top outer wall of the operating table (1) is welded with a side baffle (13) at the end away from the cylinder (2), and the ceramic-based composite plate is tightly attached between the side baffle (13) and the clamping plate (8).

6. A ceramic matrix composite material processing fixture according to claim 1, characterized in that, The bottom outer wall of the operating table (1) is provided with a dust collection port (14) located below the ceramic-based composite plate.

7. A ceramic matrix composite material processing fixture according to claim 1, characterized in that, The bottom outer wall of the operating table (1) is equipped with a controller (15), and a control switch (16) is installed on one side outer wall of the operating table (1). The control switch (16) is connected to the controller (15) and the cylinder (2) through signal lines.

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