Clamp suitable for face punching of ceramic matrix composite material

Abstract

The utility model discloses a fixture suitable for ceramic matrix composite surface punching, which comprises a lifting frame and a placing frame, a bolt is arranged on the lifting frame, fixing mechanisms used for fixing materials are arranged in the lifting frame and the placing frame, each fixing mechanism comprises two rotating shafts arranged on the side wall of the placing frame, and the two rotating shafts are connected with the lifting frame and the placing frame. The two ends of the rotating shaft are fixedly connected with rotating plates and a rotating disc respectively, a limiting piece penetrates through the side wall of the rotating disc, the two side walls of the two rotating plates are jointly and fixedly connected with an air suction box, and a plurality of suction cups are arranged on the air suction box. According to the utility model, the fixing mechanism is arranged, so that front-to-front, front-to-side and side-to-side tests of two materials can be carried out on the lifting frame and the placing frame, and the clamp does not need to be replaced, so that the time is greatly saved, and the test efficiency of the materials is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic matrix composite material test fixtures, in particular to a fixture suitable for the face-to-face impact of ceramic matrix composite materials. Background Technique

[0002] C / SiC and SiC / SiC ceramic matrix composite materials are a new type of lightweight composite material that combines strong structural load-bearing capacity and high temperature resistance, and are widely used in the fields of aviation, aerospace, weapons, etc. When producing such materials, impact tests of ceramic matrix composite materials will be carried out to complete research on aspects such as the impact performance of test points, face impact damage, and anti-face impact performance.

[0003] The fixture suitable for the face-to-face impact of ceramic matrix composite materials is a fixture for the research of face impact damage and anti-face impact performance. For example, a fixture suitable for the face-to-face impact of ceramic matrix composite materials with the publication number of CN219777321U can perform front-front, front-side, and side-side tests, but it needs to replace multiple sub-fixtures, and the fixture replacement time is long, thus greatly affecting the test efficiency of the material. Therefore, it is necessary to design a fixture suitable for the face-to-face impact of ceramic matrix composite materials to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a fixture suitable for the face-to-face impact of ceramic matrix composite materials is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fixture suitable for the face-to-face impact of ceramic matrix composite materials includes a lifting frame and a placement frame. Bolts are provided on the lifting frame. Fixing mechanisms for fixing materials are provided in both the lifting frame and the placement frame. The fixing mechanism includes two rotating shafts arranged on the side wall of the placement frame. The two ends of the rotating shaft are respectively fixedly connected with a rotating plate and a turntable. A limiting member penetrates through the side wall of the turntable. A suction box is fixedly connected to the side walls of the two rotating plates together. A plurality of suction cups are provided on the suction box. Second mounting frames are fixedly connected to the side walls of the two rotating plates respectively. A second double-headed screw rod and a second limiting rod are respectively arranged in the two second mounting frames. Two second limiting plates are provided on the second double-headed screw rod. Driving mechanisms for driving the rotating shafts to rotate are provided on the side walls of the lifting frame and the placement frame.

[0007] Preferably, the driving mechanism includes a gear fixedly connected to the side wall of the rotating shaft. An electric push rod is fixedly connected to the side wall of the placement frame. A rack is fixedly connected to the output end of the electric push rod.

[0008] Preferably, first mounting frames are fixedly connected to the side walls of the two rotating plates at the same height. A first limiting rod and a first double-headed screw are respectively arranged in the two first mounting frames, and two first limiting plates are arranged on the first double-headed screw.

[0009] Preferably, a third mounting frame is fixedly connected to the side wall of the rotating plate. Two third double-headed screws are arranged in each of the two third mounting frames, and two third limiting rods are arranged in the other two third mounting frames. A placing plate is arranged on the third double-headed screw.

[0010] Preferably, a sliding groove is formed in the side wall of the rotating plate, and both ends of the placing plate penetrate through the side wall of the adjacent rotating plate.

[0011] Preferably, two rectangular grooves are formed in each of the two side walls of the lifting frame, and two through grooves are formed in each of the two side walls of the placing frame.

[0012] Preferably, the plurality of suction cups are arranged at equal intervals, and the cross section of the limiting member is H-shaped.

[0013] Preferably, a holding rod is fixedly connected to the inner wall of the limiting member, and an anti-slip sleeve is arranged on the side wall of the holding rod.

[0014] Preferably, a mounting disc is fixedly connected to the side wall of the bolt, and a plurality of screws are arranged on the mounting disc.

[0015] In the present utility model, the following beneficial effects are achieved:

[0016] 1. The present device is provided with a fixing mechanism. By swapping the positions of the suction box and the second limiting plate on the lifting frame and the placing frame, two materials can be tested in the front-front, front-side, and side-side manners on the lifting frame and the placing frame, without the need to replace the fixture, greatly saving time and thus improving the testing efficiency of the materials;

[0017] 2. The present device is provided with a driving mechanism. It is possible not to use the limiting member, lock the rotating shaft through the electric push rod, the rack and the gear, or drive the rotating plate to rotate through the electric push rod, the rack and the gear, without the need for manual operation of the rotating plate, thereby improving the automation degree of the device;

[0018] 3. The present device is provided with the first limiting plate and the first double-headed screw. By rotating the first double-headed screw, the distance between the two first limiting plates can be changed to place materials of different widths, thereby expanding the applicable range of the device. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a fixture applicable to the face-to-face impact of ceramic matrix composites proposed by the present utility model;

[0020] Figure 2Side view of a fixture suitable for facing impact of ceramic matrix composite materials proposed by the present utility model;

[0021] Figure 3 Bottom view of a fixture suitable for facing impact of ceramic matrix composite materials proposed by the present utility model;

[0022] Figure 4 Another side view of a fixture suitable for facing impact of ceramic matrix composite materials proposed by the present utility model.

[0023] In the figure: 1 lifting frame, 2 placing frame, 3 rotating plate, 4 suction box, 5 first mounting frame, 6 suction cup, 7 first double-headed screw, 8 second mounting frame, 9 second double-headed screw, 10 rotating shaft, 11 first limiting plate, 12 placing plate, 13 turntable, 14 second limiting plate, 15 through groove, 16 limiting member, 17 gear, 18 rack, 19 electric push rod, 20 bolt, 21 third mounting frame, 22 third double-headed screw, 23 holding rod. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Referring to Figures 1-4 , a fixture suitable for facing impact of ceramic matrix composite materials includes a lifting frame 1 and a placing frame 2. A bolt 20 is provided on the lifting frame 1. Fixing mechanisms for fixing materials are provided in both the lifting frame 1 and the placing frame 2. The fixing mechanism includes two rotating shafts 10 provided on the side wall of the placing frame 2. A rotating plate 3 and a turntable 13 are respectively fixedly connected to both ends of the rotating shaft 10. A limiting member 16 is provided through the side wall of the turntable 13. Suction boxes 4 are fixedly connected to the side walls of both rotating plates 3. A plurality of suction cups 6 are provided on the suction box 4. An air suction pipe is also provided on the suction box 4. The air suction pipe is a flexible pipe with a sufficient length. Second mounting frames 8 are fixedly connected to the side walls of both rotating plates 3. A second double-headed screw 9 and a second limiting rod (shown in the figure) are respectively provided in the two second mounting frames 8. Two second limiting plates 14 are provided on the second double-headed screw 9.

[0026] Driving mechanisms for driving the rotation of the rotating shaft 10 are provided on the side walls of both the lifting frame 1 and the placing frame 2. The driving mechanism includes a gear 17 fixedly connected to the side wall of the rotating shaft 10. An electric push rod 19 is fixedly connected to the side wall of the placing frame 2. A rack 18 is fixedly connected to the output end of the electric push rod 19.

[0027] In the present utility model, both side walls of two rotating plates 3 at the same height are fixedly connected with first mounting frames 5. A first limiting rod (shown in the figure) and a first double-headed screw rod 7 are respectively arranged in the two first mounting frames 5. Two first limiting plates 11 are arranged on the first double-headed screw rod 7, which can limit the materials placed on the suction box 4 to prevent the materials from being misaligned and also eliminate the need for manual position adjustment.

[0028] In the present utility model, a third mounting frame 21 is fixedly connected to the side wall of the rotating plate 3. Two third double-headed screw rods 22 are arranged in each of the two third mounting frames 21, and two third limiting rods (shown in the figure) are arranged in the other two third mounting frames 21. A placing plate 12 is arranged on the third double-headed screw rod 22. The distance between the placing plate 12 and the suction box 4 can be changed, so that the lateral depth of the materials placed on the placing plate 12 between the two second limiting plates 14 can be changed, which is convenient for positioning materials with different lateral thicknesses.

[0029] In the present utility model, sliding grooves are formed in the side walls of the rotating plate 3, and both ends of the placing plate 12 penetrate through the side walls of the adjacent rotating plate 3, enabling the placing plate 12 to move up and down smoothly.

[0030] In the present utility model, two rectangular grooves are formed in each of the two side walls of the lifting frame 1, and two through grooves 15 are formed in each of the two side walls of the placing frame 2, which can reduce the weights of the lifting frame 1 and the placing frame 2, and also facilitate observing the rotation condition of the rotating plate 3.

[0031] In the present utility model, a plurality of suction cups 6 are arranged at equal intervals, making the material adsorption more evenly stressed. The cross-section of the limiting member 16 is H-shaped, which can limit the turntable 13 at two points, making it more difficult to rotate.

[0032] In the present utility model, a holding rod 23 is fixedly connected to the inner wall of the limiting member 16, and an anti-slip sleeve is arranged on the side wall of the holding rod 23, facilitating the grasping of the limiting member 16.

[0033] In the present utility model, a mounting disc is fixedly connected to the side wall of the bolt 20 (connected to an external impact device), and a plurality of screws are arranged on the mounting disc, enabling the bolt 20 and the lifting frame 1 to be disassembled, which is convenient for repairing the components inside the lifting frame 1 after the bolt 20 is connected to the external impact device.

[0034] In the initial state, two suction pipes are connected to an external vacuum pumping device, the bolt 20 is connected to an external impact device, and the placing frame 2 is installed on the test platform of the external impact device.

[0035] During use, two materials are respectively placed in the two suction boxes 4, and the two materials are adsorbed by a plurality of suction cups 6. As shown in the figure, then the external impact device is started to make the upper material move downward relative to the lower material for a front-to-front test;

[0036] When conducting the front-side test, two limit members 16 on the placement frame 2 can be pulled out, the lower material is removed, and the two rotating plates 3 are rotated to make the suction box 4 face downward. The lower material is placed between the two second limit plates 14. By turning the second double-headed screw rod 9, the two second limit plates 14 move towards each other under the limitation of the two second limit rods to clamp the lower material. Then, the two limit members 16 are reinserted, and the external impact device drives the upper material to move downward for the front-side test;

[0037] Then, the upper material is removed. The two rotating plates 3 are rotated to make the suction box 4 face downward. The upper material is placed between the two second limit plates 14. By turning the second double-headed screw rod 9, the two second limit plates 14 move towards each other under the limitation of the two second limit rods to clamp the upper material. Then, the two limit members 16 are reinserted, and the external impact device drives the upper material to move downward for the side-side test. During the process, it is not necessary to replace the fixture for the front-front, front-side, and side-side tests, thus greatly saving time;

[0038] For materials of different widths, before placing the suction box 4, by rotating the first double-headed screw rod 7, the two first limit plates 11 will move towards each other or in the opposite direction under the limitation of the two first limit rods, so that the distance between the two first limit plates 11 is changed to facilitate the insertion of materials of different widths, thereby expanding the application range of the device.

[0039] As described above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and practical concept of the present invention, making equivalent replacements or changes, should be covered within the protection scope of the present invention.

Claims

1. A fixture applicable to the facing impact of ceramic matrix composites, comprising a lifting frame (1) and a placement frame (2), characterized in that, A bolt (20) is provided on the lifting frame (1). Fixing mechanisms for fixing materials are provided in both the lifting frame (1) and the placing frame (2). The fixing mechanism includes two rotating shafts (10) provided on the side wall of the placing frame (2). A rotating plate (3) and a rotating disc (13) are respectively and fixedly connected to both ends of the rotating shaft (10). A limiting member (16) is provided through the side wall of the rotating disc (13). A suction box (4) is fixedly connected to the side walls of both sides of the two rotating plates (3). A plurality of suction cups (6) are provided on the suction box (4). Second mounting frames (8) are fixedly connected to the side walls of both sides of the two rotating plates (3). A second double-headed screw (9) and a second limiting rod are respectively provided in the two second mounting frames (8). Two second limiting plates (14) are provided on the second double-headed screw (9). Driving mechanisms for driving the rotating shafts (10) to rotate are provided on the side walls of both the lifting frame (1) and the placing frame (2).

2. The fixture for ceramic matrix composite facing impact according to claim 1, characterized in that The driving mechanism includes a gear (17) fixedly connected to the side wall of the rotating shaft (10). An electric push rod (19) is fixedly connected to the side wall of the placing frame (2). A rack (18) is fixedly connected to the output end of the electric push rod (19).

3. A fixture applicable to the facing impact of ceramic matrix composites according to claim 2, characterized in that, First mounting frames (5) are fixedly connected to the side walls of the two rotating plates (3) at the same height. A first limiting rod and a first double-headed screw (7) are respectively provided in the two first mounting frames (5). Two first limiting plates (11) are provided on the first double-headed screw (7).

4. A fixture applicable to the face impact of ceramic matrix composites according to claim 3, characterized in that, A third mounting frame (21) is fixedly connected to the side wall of the rotating plate (3). Two third double-headed screws (22) are respectively provided in two of the third mounting frames (21). Two third limiting rods are provided in the other two third mounting frames (21). A placing plate (12) is provided on the third double-headed screw (22).

5. A fixture applicable to the facing impact of ceramic matrix composites according to claim 4, characterized in that, A sliding groove is formed in the side wall of the rotating plate (3). Both ends of the placing plate (12) penetrate through the side wall of the adjacent rotating plate (3).

6. A fixture applicable to the facing impact of ceramic matrix composites according to claim 5, characterized in that, Two rectangular grooves are formed in both side walls of the lifting frame (1). Two through grooves (15) are formed in both side walls of the placing frame (2).

7. A fixture applicable to ceramic matrix composite material facing impact according to claim 1, characterized in that, The plurality of suction cups (6) are arranged at equal intervals. The cross section of the limiting member (16) is H-shaped.

8. A fixture applicable to the facing impact of ceramic matrix composites according to claim 7, characterized in that, A grip rod (23) is fixedly connected to the inner wall of the limiting member (16). An anti-slip sleeve is provided on the side wall of the grip rod (23).

9. A fixture applicable to the face impact of ceramic matrix composites according to claim 5, characterized in that, An installation disc is fixedly connected to the side wall of the bolt (20). A plurality of screws are provided on the installation disc.

Images