Connecting and shaping tool for metal ceramic integrated fastener

Abstract

The invention discloses a manufacturing process of a metal ceramic integrated fastener, relates to the technical field of fastener production, and can solve the problem of the manufacturing process of the metal ceramic integrated fastener. The connecting and shaping tool of the metal ceramic integrated fastener comprises a containing cylinder assembly with a containing cavity and a connecting cylinder used for axially positioning a metal section and a ceramic-based composite material section, and the connecting cylinder is arranged in the containing cavity of the containing cylinder assembly; a connecting through hole for mounting the metal section and the ceramic-based composite material section is formed in the connecting cylinder; and the top pressing block is arranged in the accommodating cavity and can freely slide in the accommodating cavity along the axis of the accommodating cavity.

Description

Technical Field

[0001] The invention relates to the technical field of fastener production, and in particular to a connection shaping tool for a metal-ceramic integrated fastener. Background Art

[0002] With the development of high-performance fields such as aerospace and automobile manufacturing, the demand for metal-ceramic integrated fasteners is increasing to meet the connection requirements under different temperatures and environments. Due to the differences in physical and chemical properties, it is usually difficult to achieve high-strength and high-stability connections between traditional metal and ceramic materials. In the existing technology, the connection methods between metal and ceramic, such as mechanical connection, adhesive connection, etc., often cannot overcome the problems of contact failure and material damage under high temperature and complex load conditions.

[0003] After research, the inventor found that welding and curing the ceramic base and the metal can greatly improve the performance of the metal-ceramic integrated fastener. However, when the existing ceramic base and the metal are connected by liquid phase diffusion, there is a lack of dedicated curing and molding tooling, which makes it difficult to ensure the performance consistency of the ceramic base and the metal segment after curing, and the yield rate is low. To solve this problem, the inventor designed a connection and molding tool for metal-ceramic integrated fasteners to solve the above problems.

[0004] Therefore, this application is filed. Summary of the invention

[0005] The purpose of the present application is to provide a connection shaping tool for a metal-ceramic integrated fastener, so as to solve the problem of lack of special tooling when connecting and curing ceramic-based composites and metal segments.

[0006] In order to solve the above technical problems, the present invention adopts the following solutions:

[0007] The present application provides a connection shaping tool for a metal-ceramic integrated fastener, comprising:

[0008] It comprises a receiving tube assembly having a receiving cavity, and a connecting tube for axially positioning a metal section and a ceramic-based composite section, wherein the connecting tube is arranged in the receiving cavity of the receiving tube assembly;

[0009] A connecting through hole for installing the metal section and the ceramic-based composite material section is provided in the connecting tube;

[0010] It also includes a pressing block which is arranged in the accommodating cavity and can slide freely inside the accommodating cavity along the axis of the accommodating cavity.

[0011] Optionally, it also includes an elastic pushing structure or a pneumatic pushing component which is arranged in the accommodating cavity and is used to push the metal section and the ceramic-based composite material section toward each other.

[0012] Optionally, the elastic pushing structure is a pushing spring, and the pushing spring is located between the pushing block and the end surface side wall of the accommodating cylinder assembly.

[0013] Optionally, the pneumatic push assembly comprises a push rod and a piston which are fixedly connected, and the piston is slidably and sealingly connected to the accommodating cylinder assembly along its axial direction;

[0014] The accommodating cylinder assembly is provided with a T-shaped airflow channel, one end of which is connected to the accommodating cavity, the end of the T-shaped airflow channel connected to the accommodating cavity is arranged toward the push rod, and the other two ends of the T-shaped airflow channel are respectively provided with a detachable blocking valve and a one-way valve;

[0015] The accommodating cylinder assembly is also provided with an air vent for connecting the outside with the accommodating cavity.

[0016] Optionally, a limiting step extending toward the center is further provided on the inner peripheral wall of the accommodating cylinder assembly;

[0017] The limiting step is located between the air vent and the piston.

[0018] Optionally, a return spring is further provided between the limiting step and the piston.

[0019] Optionally, the pneumatic pushing assembly further comprises a pushing block detachably fixed to the end of the push rod, and a gap for air permeability is provided between the pushing block and the inner peripheral wall of the accommodating cylinder assembly.

[0020] Optionally, the piston is sleeved with multiple layers of sealing rings arranged axially along the accommodating cylinder assembly.

[0021] Optionally, the cross-sectional shapes of the piston, the pressing block and the accommodating cavity are all circular.

[0022] Optionally, the accommodating barrel assembly includes an accommodating barrel body and an accommodating cover body, and the accommodating barrel body and the accommodating cover body are detachably fixedly connected via threads.

[0023] Beneficial effects of the present invention:

[0024] The connection shaping tooling of the present application includes a accommodating cylinder assembly and a connecting cylinder, so that after the metal segment and the ceramic-based composite segment are installed in the connecting through hole of the connecting cylinder, the metal segment and the ceramic-based composite segment will always be in a coaxial state. After the connection shaping tooling of the present application is placed in a heated diffusion welding machine, the solder paste between the metal segment and the ceramic-based composite segment will diffuse in the liquid phase, so that the metal segment can be welded and fixed to the ceramic-based composite segment to form an integrated fastener, which can effectively ensure the consistency of various parameters of the fastener after production and improve the yield rate.

[0025] In addition, the present application also arranges an elastic pushing structure or a pneumatic pushing assembly in the accommodating cylinder assembly. During the liquid phase diffusion of the solder paste, the metal section and the ceramic-based composite section will also be pushed closer to each other, thereby avoiding the problems of hollowing, incomplete and unbalanced solder coverage between the metal section and the ceramic-based composite section after the solder paste is liquefied and diffused and connected. This can further improve the consistency of various performance parameters of the fastener and improve the yield rate.

[0026] In particular, the present application also provides a pneumatic pushing assembly method. Since the liquid phase diffusion connection of solder paste is required during the connection process between the metal segment and the ceramic-based composite segment, the connection and shaping tooling of the present application is always in a higher ambient temperature when welding the fasteners. The pneumatic pushing assembly method causes the air pressure in the accommodating cavity to continue to increase with the increase in temperature. Therefore, during the connection process between the metal segment and the ceramic-based composite segment, a continuously increasing extrusion pressure is applied to the metal segment and the ceramic-based composite segment, thereby further improving the stability and reliability of the metal segment and the ceramic-based composite segment after the connection and shaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional explosion structure of Example 1 of the present application.

[0028] Figure 2 This is a schematic diagram of the cross-sectional explosion structure of Example 1 of the present application.

[0029] Figure 3 This is a schematic diagram of the cross-sectional explosion structure of Example 2 of the present application.

[0030] Figure 4 This is a schematic diagram of the process flow of Example 3 of the present application.

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of Example 4 of the present application.

[0032] Explanation of the reference numerals: 11-metal section, 111-threaded portion, 12-ceramic-based composite section, 13-solder section, 2-connecting cylinder, 21-connecting through hole, 3-pushing block, 41-accommodating cylinder body, 411-connecting external thread, 412-accommodating cavity, 413-air flow channel, 414-check valve, 415-detachable sealing valve, 416-limiting step, 417-air vent, 42-accommodating cover body, 421-connecting internal thread, 43-inflation pipe, 5-pushing spring, 6-pneumatic pushing assembly, 61-push rod, 62-piston, 621-sealing ring, 63-pushing block, 7-reset spring. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0034] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "opened", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] Embodiment 1:

[0038] like Figure 1 and Figure 2 As shown, the present application provides a connection shaping tool for a metal-ceramic integrated fastener, comprising:

[0039] It includes a receiving tube assembly having a receiving cavity 412, and a connecting tube 2 for axially positioning the metal segment 11 and the ceramic-based composite segment 12, wherein the connecting tube 2 is arranged in the receiving cavity 412 of the receiving tube assembly;

[0040] The connecting tube 2 is provided with a connecting through hole 21 for mounting the metal section 11 and the ceramic-based composite material section 12;

[0041] It also includes a pressing block 3 which is disposed in the accommodating cavity 412 and can slide freely inside the accommodating cavity 412 along the axis thereof.

[0042] The connection shaping tooling disclosed in this embodiment includes a accommodating cylinder assembly and a connecting cylinder 2, so that after the metal segment 11 and the ceramic-based composite segment 12 are installed in the connecting through hole 21 of the connecting cylinder 2, the metal segment 11 and the ceramic-based composite segment 12 will always be in a coaxial state. After the connection shaping tooling of the present application is placed in a heated diffusion welding machine, the solder paste between the metal segment 11 and the ceramic-based composite segment 12 will diffuse in the liquid phase, so that the metal segment 11 can be welded and fixed to the ceramic-based composite segment 12 to form an integrated fastener, which can effectively ensure the consistency of various parameters of the fastener after production and improve the yield rate.

[0043] Specifically, in this embodiment, an elastic pushing structure is also included which is disposed in the accommodating cavity 412 and is used to push the metal segment 11 and the ceramic-based composite segment 12 toward each other.

[0044] In this embodiment, an elastic pushing structure is arranged in the accommodating cylinder assembly. During the diffusion of the solder paste liquid phase, the metal segment 11 and the ceramic-based composite segment 12 are also pushed closer to each other, thereby avoiding the problems of hollowing, incomplete and unbalanced solder coverage between the metal segment 11 and the ceramic-based composite segment 12 after the solder paste is liquefied and diffused and connected, which can further improve the consistency of various performance parameters of the fastener and improve the yield rate.

[0045] In this embodiment, Figure 2 As shown, the elastic pushing structure is a pushing spring 5, which is located between the pushing block 3 and the end face side wall of the accommodating tube assembly. The pushing spring 5 can be in the form of a coil spring, a disc spring, etc. The technicians can set it according to their needs, which will not be elaborated here.

[0046] The push spring 5 in this embodiment is made of a high-temperature resistant alloy material. The high-temperature resistant alloy spring is an existing conventional mechanical component and will not be described in detail here.

[0047] In this embodiment, Figure 2 As shown, the accommodating cylinder assembly includes an accommodating cylinder body 41 and an accommodating cover body 42, and the accommodating cylinder body 41 and the accommodating cover body 42 are detachably fixedly connected via threads.

[0048] Specifically, the open end of the accommodating tube body 41 is provided with a connecting external thread 411, and the accommodating cover body 42 is provided with a connecting internal thread 421 adapted to the connecting external thread 411. The accommodating tube body 41 and the accommodating cover body 42 are connected and fixed by the connecting external thread 411 and the connecting internal thread 421.

[0049] Embodiment 2:

[0050] like Figure 3 As shown, in this embodiment, a pneumatic pushing assembly 6 is also included, which is arranged in the accommodating cavity 412 and is used to push the metal section 11 and the ceramic-based composite material section 12 toward each other.

[0051] Since solder paste liquid phase diffusion connection is required during the connection of the metal segment 11 and the ceramic-based composite segment 12, the connection shaping tool of the present application is always in a relatively high ambient temperature when welding the fasteners. In this embodiment, the air pressure in the accommodating cavity 412 is continuously increased with the increase of temperature by means of the pneumatic pushing assembly 6. Therefore, during the connection of the metal segment 11 and the ceramic-based composite segment 12, a continuously increasing extrusion pressure is applied to the metal segment 11 and the ceramic-based composite segment 12, thereby further improving the stability and reliability of the metal segment 11 and the ceramic-based composite segment 12 after the connection shaping.

[0052] In this embodiment, Figure 3 As shown, the pneumatic push assembly 6 comprises a push rod 61 and a piston 62 which are fixedly connected, and the piston 62 is slidably and sealingly connected to the accommodating cylinder assembly along its axial direction;

[0053] The accommodating cylinder assembly is provided with a T-shaped airflow channel 413, one end of which is connected to the accommodating chamber 412. The end of the T-shaped airflow channel 413 connected to the accommodating chamber 412 is arranged toward the push rod 61, and the other two ends of the T-shaped airflow channel 413 are respectively provided with a detachable blocking valve 415 and a one-way valve 414;

[0054] The accommodating cylinder assembly is also provided with an air hole 417 for connecting the outside with the accommodating chamber 412. In this embodiment, the gas in the accommodating chamber 412 is easy to control through the detachable anti-blocking valve, the one-way valve 414 and the air hole 417. When a certain amount of gas needs to be retained in the accommodating chamber 412, the detachable blocking valve 415 can be installed, and the accommodating chamber 412 is inflated through the one-way valve 414 and the T-shaped air flow channel 413. The air pressure pushes the piston 62 to move toward the connecting cylinder 2, so that the gas in the area where the accommodating chamber 412 is connected to the connecting cylinder 2 is discharged from the air hole 417. As the ambient temperature rises, as the air pressure increases, the piston 62 will move further, and the gas in the area connected to the connecting cylinder 2, the ceramic-based composite section 12, the metal section 11 and the like will be further discharged, thereby avoiding the problem that the piston 62 cannot further push the ceramic-based composite section 12 after the ambient temperature rises.

[0055] In this embodiment, an air charging pipe 43 connected to the one-way valve 414 is further provided, so as to facilitate the charging of a certain amount of gas into the accommodating chamber 412 to increase the thrust of the piston 62 and the push rod 61 .

[0056] In this embodiment, the piston 62 is made of a high-temperature resistant rubber material to ensure that the piston 62 can work normally at a relatively high ambient temperature. The high-temperature resistant rubber material is an existing material and will not be described in detail here.

[0057] Specifically, in this embodiment, a limiting step 416 extending toward the center is further provided on the inner peripheral wall of the accommodating cylinder assembly;

[0058] The limiting step 416 is located between the air vent 417 and the piston 62 . The limiting step 416 is provided between the air vent 417 and the piston 62 to prevent the piston 62 from blocking the air vent 417 .

[0059] Specifically, in this embodiment, if Figure 3 As shown, a return spring 7 is also provided between the limit step 416 and the piston 62, and the pneumatic pushing assembly 6 also includes a push block 63 detachably fixed to the end of the push rod 61, and a gap for air permeability is provided between the push block 63 and the inner circumferential wall of the accommodating tube assembly, and a return spring 7 is provided, and the two ends of the return spring 7 are respectively pressed on the limit step 416 and the piston 62, so that after the connection and shaping of the metal section 11 and the ceramic-based composite section 12 are completed, the detachable blocking valve 415 is disassembled, that is, the return spring 7 can be used to drive the entire pneumatic pushing assembly 6 to move closer to the end face side wall of the accommodating tube assembly to discharge the gas, so as to facilitate the installation of another fastener that needs to be connected and shaped.

[0060] Specifically, in this embodiment, if Figure 3 As shown, the piston 62 is sleeved with multiple layers of sealing rings 621 arranged along the axial direction of the accommodating cylinder assembly to improve the sealing performance of the piston 62.

[0061] Specifically, in this embodiment, the cross-sectional shapes of the piston 62, the pressing block 3, and the accommodating cavity 412 are all circular, which is convenient for processing and manufacturing.

[0062] The difference between this embodiment and embodiment 1 is that this embodiment uses a pneumatic pushing assembly 6 to replace the elastic pushing structure in embodiment 1, so that the pressure on the metal segment 11 and the ceramic-based composite material increases with the increase of temperature. The remaining structures of this embodiment are the same as those of the above-mentioned embodiment 1 and will not be repeated here.

[0063] Embodiment 3:

[0064] like Figure 4 As shown, this embodiment provides a manufacturing process of a metal-ceramic integrated fastener, comprising the following steps:

[0065] S1, independently preparing a metal segment 11 and a ceramic-based composite segment 12;

[0066] S2, installing the metal segment 11 and the ceramic-based composite segment 12 into the connection shaping tooling described in Example 1, making the metal segment 11 and the ceramic-based composite segment 12 coaxial, and filling the connection solder between the metal segment 11 and the ceramic-based composite segment 12;

[0067] S3. Place the connection shaping tooling equipped with the metal segment 11, the ceramic-based composite segment 12, and the connection solder into a heated diffusion welding machine, and use liquid phase diffusion bonding to weld and fix the metal segment 11 and the ceramic-based composite segment 12 into one, so as to obtain a metal-ceramic integrated semi-finished fastener.

[0068] In the process of this embodiment, the metal segment 11 and the ceramic-based composite segment 12 of the metal-ceramic integrated fastener are prepared independently and then connected by liquid phase diffusion of connecting solder. This can not only ensure that the physical and chemical properties of the metal segment 11 and the ceramic-based composite segment 12 reach the optimal state, but also achieve a high-strength bond between metal and ceramic, overcoming the contact failure and material damage problems under high temperature and complex load conditions.

[0069] The connecting solder in this embodiment can refer to the welding flux disclosed in our patent application number CN202210024471.0, and the patent name is a welding flux for connecting silicon carbide ceramics and a preparation method thereof, to ensure the stability of the metal and ceramic after welding.

[0070] Specifically, in this embodiment, if Figure 1 As shown, the method further includes S4, performing surface grinding treatment on the semi-finished fastener in S3;

[0071] And S5, performing surface coating treatment on the threaded portion 111 of the semi-finished fastener after surface grinding treatment to obtain a finished metal-ceramic integrated fastener.

[0072] Specifically, in this embodiment, the coating material of the threaded portion 111 is molybdenum disulfide, and the coating thickness is 0.005 mm to 0.015 mm.

[0073] Specifically, in this embodiment, in S1, the preparation of the metal segment 11 includes the following steps:

[0074] S111, grinding processing, grinding the metal bar to a preset size;

[0075] S112, solution treatment, solution treatment temperature 750 ° C, solution treatment time is 90min to 150min, quenching time is within 6s;

[0076] S113, aging treatment, aging temperature 250 ℃ to 300 ℃, aging treatment time 200min to 280min;

[0077] S114, thread rolling treatment, obtaining a semi-finished metal segment 11 having a threaded portion 111 through cold rolling forming;

[0078] S115, sandblasting to obtain a finished metal segment 11.

[0079] In this embodiment, the metal bar can be an alloy bar with a diameter of 20 mm. In S111, a CNC machine tool can be used for centerless grinding. The grinding speed parameter during the grinding process can be 1000 r / min, and the grinding depth can be 1 mm. The technician can also select other grinding equipment and grinding parameters for grinding according to needs. In S111, the purpose is mainly to grind the metal bar to a preset size. In this embodiment, the preset diameter size is 17 mm. After cold rolling, the size of the threaded portion 111 of the metal segment 11 is M16.

[0080] Specifically, in this embodiment, in S1, the preparation of the ceramic-based composite material segment 12 includes the following steps:

[0081] S121, weaving a braided body using a ceramic fiber bundle;

[0082] S122, shaping the braided body into a preform by using a shaping mold;

[0083] S123, performing at least one interface deposition process on the preform using a precursor gas;

[0084] S124, roughly machining the shape of the ceramic-based composite material segment 12;

[0085] S125, using a precursor liquid to sequentially perform vacuum impregnation treatment, pressure impregnation treatment and curing treatment on the roughly machined ceramic-based composite material segment 12;

[0086] S126, finishing the ceramic-based composite material segment 12 after the impregnation and curing treatment to a preset size;

[0087] S127, the ceramic-based composite material segment 12 after the impregnation and curing treatment is subjected to multiple surface deposition treatments to obtain a finished ceramic-based composite material segment 12. The ceramic fiber material in this embodiment is SiC, and 500 fibers are bundled to form a woven body by hand. The shaping mold in this embodiment can be a shaping mold for making ceramic material fasteners, or a technician can design it according to needs, which will not be described in detail here.

[0088] Specifically, in this embodiment, in S123, the precursor gas used is boron nitride, and during the interface deposition process:

[0089] The deposition temperature is 600°C to 900°C;

[0090] The deposition rate was 1 μm / min;

[0091] Single deposition time: 30h to 40h;

[0092] The number of depositions is 2 to 6 times. In this embodiment, the number of interface depositions is 2 times. Through the interface deposition step, the precursor gas can be deposited into the gaps between the fiber bundles to fill the gaps in the fiber bundles and complete the densification.

[0093] Specifically, in this embodiment, in S125, the precursor liquid used is polycarbosilane xylene solvent;

[0094] During vacuum impregnation:

[0095] The vacuum impregnation temperature is: 40°C to 45°C, the vacuum impregnation time is: 2h, and the vacuum degree is: minus 0.081Mpa to 0.096Mpa;

[0096] During pressure impregnation:

[0097] The pressure of the pressure impregnation is: 3Mpa to 5Mpa, and the pressure impregnation time is: 2h. The pressure of the pressure impregnation in this embodiment is 3Mpa;

[0098] During the curing process:

[0099] The curing temperature is 180°C to 200°C and the curing time is 8 hours.

[0100] Specifically, in this embodiment, in S127, the deposited material is silicon carbide;

[0101] When performing surface deposition treatment, a single deposition time is 60h to 80h, and the deposition temperature is 900°C to 1000°C;

[0102] The number of surface deposition treatments in S127 is not less than 6 times.

[0103] Specifically, in this embodiment, in S3, when liquid phase diffusion bonding is performed, the ambient vacuum in the heated diffusion welding machine needs to be lower than -0.065Mpa, and at the same time, its internal temperature is heated to not less than 1100°C and maintained for at least 45 minutes, and then nitrogen is introduced to cool for 5 to 8 hours.

[0104] Specifically, in this embodiment, in S3, when liquid phase diffusion bonding is performed, the connection shaping tool will continuously apply a thrust toward the connection solder to the metal segment 11 and / or the ceramic-based composite segment 12 .

[0105] By applying a thrust toward the connecting solder to the metal segment 11 and / or the ceramic-based composite segment 12 during liquid phase diffusion connection, when the connecting solder is converted into a liquid phase at high temperature, a gap is avoided between the metal segment 11 and the ceramic-based composite segment 12, thereby ensuring the connection stability after the metal segment 11 and the ceramic-based composite segment 12 are connected as one.

[0106] Embodiment 4:

[0107] like Figure 5 As shown, this embodiment provides a metal-ceramic integrated fastener, which is manufactured by the manufacturing process of the above-mentioned embodiment 3, and includes a metal segment 11 and a ceramic-based composite segment 12 that are integrally fixedly connected, and a threaded portion 111 is provided on the metal segment 11.

[0108] Specifically, in this embodiment, a solder segment 13 is further provided, and the metal segment 11 and the ceramic-based composite segment 12 are welded and fixed into one body through the solder segment 13 .

[0109] Specifically, in this embodiment, the surface of the threaded portion 111 of the metal segment 11 is also coated with a molybdenum disulfide coating with a thickness of 0.005 mm to 0.015 mm.

[0110] Specifically, in this embodiment, the end surface of the metal segment 11 close to the ceramic-based composite segment 12 is a plane, and the end surface of the ceramic-based composite segment 12 close to the metal segment 11 is also a plane. In some embodiments, technicians can set the end surfaces of the metal segment 11 and the ceramic-based composite segment 12 close to each other into matching concave and convex surfaces as needed to improve the bending moment performance parameters. In some embodiments, technicians can also set rectangular grooves and rectangular protrusions on the end surfaces of the metal segment 11 and the ceramic-based composite segment 12 close to each other as needed to improve the bending moment performance parameters and torque performance parameters.

[0111] Specifically, in the present embodiment, the size of the threaded portion 111 is M16, and technicians can set the size of the threaded portion 111 and the fastener to other sizes as needed to adapt to different connection holes.

[0112] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A connection shaping tool for a metal-ceramic integrated fastener, characterized in that: include: It comprises a receiving tube assembly having a receiving cavity (412), and a connecting tube (2) for axially positioning a metal section (11) and a ceramic-based composite material section (12), wherein the connecting tube (2) is arranged in the receiving cavity (412) of the receiving tube assembly; A connecting through hole (21) for mounting the metal section (11) and the ceramic-based composite material section (12) is provided in the connecting tube (2); It also includes a pressing block (3) which is arranged in the accommodating cavity (412) and can slide freely inside the accommodating cavity (412) along the axis of the accommodating cavity (412).

2. The connection shaping tool for a metal-ceramic integrated fastener according to claim 1, characterized in that: It also includes an elastic pushing structure or a pneumatic pushing component (6) which is arranged in the accommodating cavity (412) and is used to push the metal section (11) and the ceramic-based composite material section (12) toward each other.

3. The connection shaping tool for a metal-ceramic integrated fastener according to claim 2, characterized in that: The elastic pushing structure is a pushing spring (5), and the pushing spring (5) is located between the pushing block (3) and the end surface side wall of the accommodating cylinder assembly.

4. The connection shaping tool for a metal-ceramic integrated fastener according to claim 2, characterized in that: The pneumatic push assembly (6) comprises a push rod (61) and a piston (62) which are fixedly connected, and the piston (62) is slidably and sealingly connected to the accommodating cylinder assembly along its axial direction; The accommodating cylinder assembly is provided with a T-shaped airflow channel (413) whose one end is in communication with the accommodating chamber (412); the end of the T-shaped airflow channel (413) in communication with the accommodating chamber (412) is arranged toward the push rod (61); and the other two ends of the T-shaped airflow channel (413) are respectively provided with a detachable blocking valve (415) and a one-way valve (414); The accommodating cylinder assembly is also provided with an air vent (417) for connecting the outside with the accommodating cavity (412).

5. The connection shaping tool for a metal-ceramic integrated fastener according to claim 4, characterized in that: The inner peripheral wall of the accommodating cylinder assembly is also provided with a limiting step (416) extending toward the center; The limiting step (416) is located between the air vent (417) and the piston (62).

6. The connection shaping tool for a metal-ceramic integrated fastener according to claim 5, characterized in that: A return spring (7) is also provided between the limiting step (416) and the piston (62).

7. The connection shaping tool for a metal-ceramic integrated fastener according to claim 4, characterized in that: The pneumatic pushing assembly (6) further comprises a pushing block (63) which is detachably fixed to the end of the push rod (61), and a gap for air permeability is provided between the pushing block (63) and the inner peripheral wall of the accommodating cylinder assembly.

8. The connection shaping tool for a metal-ceramic integrated fastener according to claim 4, characterized in that: The piston (62) is sleeved with multiple layers of sealing rings (621) arranged along the axial direction of the accommodating cylinder assembly.

9. The connection and shaping tooling for a metal-ceramic integrated fastener according to claim 4, characterized in that: The cross-sectional shapes of the piston (62), the pressing block (3) and the accommodating cavity (412) are all circular.

10. The connection and shaping tooling for a metal-ceramic integrated fastener according to claim 1, characterized in that: The accommodating barrel assembly comprises an accommodating barrel body (41) and an accommodating cover body (42), and the accommodating barrel body (41) and the accommodating cover body (42) are detachably fixedly connected via threads.

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