A vacuum superplastic forming-diffusion bonding apparatus

Abstract

The utility model discloses a kind of vacuum superplastic forming-diffusion connection equipment, including bed body component, the bed body component includes upper frame and lower frame, the inside of the bed body component is equipped with heating furnace component, the lower end of the upper frame is equipped with pressure head component, the upper surface one side of the upper frame is equipped with hydraulic system, the upper surface other side of the upper frame is connected with the hydraulic system by hydraulic pipeline intercommunication and is equipped with oil cylinder, the oil cylinder is connected with the pressure head component by the upper frame, the inside of the bed body component and at the side of the heating furnace component are connected with vacuum system by vacuum pipeline intercommunication, the other side of the heating furnace component is equipped with air cooling system, one side of the bed body component is equipped with pneumatic control forming component, improve overall main equipment integration by integrated design, reduce overall equipment floor area, improve integrity between each matching system, improve finished product rate when part processing, reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of aerospace technology, specifically to a vacuum superplastic forming-diffusion bonding device. Background Technology

[0002] Vacuum superplastic forming-diffusion bonding equipment is a high-end material processing system integrating superplastic forming and diffusion bonding. It is primarily used to manufacture high-performance, lightweight, complex structural components. Operating in a vacuum environment, this equipment precisely controls high temperature and pressure to shape materials in a superplastic state, achieving atomic-level metallurgical bonding. It features high forming accuracy and interfacial bonding strength approaching that of the base material. It can complete the manufacturing of complex structures that would require multiple steps in traditional processes in a single operation, significantly improving production efficiency and component performance. Traditional vacuum superplastic forming-diffusion bonding equipment has low integration; hydraulic, air-cooling, and vacuum systems are often independently set up, resulting in a large overall footprint. Furthermore, the low integration between these systems affects the yield rate during part processing and increases manufacturing costs. Utility Model Content

[0003] The purpose of this utility model is to provide a vacuum superplastic forming-diffusion bonding device to solve the problems mentioned in the background art, such as the low integration of traditional vacuum superplastic forming-diffusion bonding devices, the fact that hydraulic systems, air cooling systems and vacuum systems are mostly set up independently, the large footprint of the overall equipment, and the low overall integration between the various systems, which affects the yield of parts during processing and increases the production cost.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vacuum superplastic forming-diffusion bonding device, comprising a bed assembly, the bed assembly including an upper frame and a lower frame, a column provided between the upper frame and the lower frame, a heating furnace assembly provided inside the bed assembly and on the lower frame, a pressure head assembly provided at the lower end of the upper frame and above the heating furnace assembly, a hydraulic system provided on one side of the upper surface of the upper frame, and a cylinder provided on the other side of the upper surface of the upper frame connected to the hydraulic system via a hydraulic pipeline, the cylinder penetrating the upper frame and connected to the pressure head assembly, a vacuum system provided inside the bed assembly and connected to one side of the heating furnace assembly via a vacuum pipeline, an air-cooling system provided on the other side of the heating furnace assembly, and a pneumatic forming component provided on one side of the bed assembly, the pneumatic forming component being connected to the vacuum system via a circuit; The heating furnace assembly includes a furnace shell assembly, which is a columnar cavity structure with an octagonal cross-section for both the inner and outer cavities. The furnace shell assembly has an open structure at both ends, with the outer sides of the two openings of the furnace shell assembly being circular. Both openings of the furnace shell assembly are hinged to furnace door assemblies via hinge assemblies, and both furnace door assemblies are sealed and locked to the furnace shell assembly via gear ring assemblies.

[0005] Preferably, the vacuum system includes a base, a Roots pump mounted on a raised platform in the center of the base, a mechanical vacuum pump mounted on one side of the upper surface of the base, and a slide valve pump mounted on the other side of the upper surface of the base. The slide valve pump is connected to the outlet of the Roots pump via a first pre-stage pipeline, a second pre-stage pipeline, and an electromagnetic vacuum differential pressure charging valve. The suction port of the Roots pump is connected to a three-way pipeline, the other two outlets of which are respectively connected to a second normally closed pneumatic high-vacuum baffle valve and a fourth normally closed pneumatic high-vacuum baffle valve. The second normally closed pneumatic high-vacuum baffle valve is connected to the first normally closed pneumatic high-vacuum baffle valve via a suction pipeline. On one side, the other side of the first normally closed pneumatic high vacuum baffle valve is connected to the heating furnace assembly via a flange. The bottom end of the first normally closed pneumatic high vacuum baffle valve is connected to a high vacuum oil diffusion pump via a flange. A pipeline extends from the lower end of the side wall of the high vacuum oil diffusion pump and is connected to the fourth normally closed pneumatic high vacuum baffle valve via a third pre-pipeline. The mechanical vacuum pump is connected to the third pre-pipeline via the third normally closed pneumatic high vacuum baffle valve. An air filling component is provided on the side of the first normally closed pneumatic high vacuum baffle valve near the air-cooling system. A pneumatic component is provided on one side wall of the first normally closed pneumatic high vacuum baffle valve.

[0006] Preferably, the pressure head assembly includes a guide post, the upper end of which is connected to the hydraulic cylinder, the lower end of which is provided with an upper slider, and pressure heads are provided at the four corners of the lower end of the upper slider. The lower end of the pressure head penetrates the upper end of the heating furnace assembly, and a pressure plate is connected to the lower end of the pressure head and inside the heating furnace assembly via a pressure block. A corrugated pipe is provided outside the pressure head and at the upper end of the heating furnace assembly.

[0007] Preferably, a vacuum control cabinet and a power supply cabinet are respectively provided on the outer sides of the bed assembly.

[0008] Compared with the prior art, the beneficial effects of this utility model are: replacing the traditional vacuum superplastic forming-diffusion joining equipment, integrating hydraulic system, air cooling system and vacuum system into the whole vacuum superplastic forming-diffusion joining equipment, improving the integration of the main equipment through integrated design, reducing the overall equipment footprint, improving the integrity between various cooperating systems, increasing the yield of parts during processing, and reducing production and manufacturing costs. Attached Figure Description

[0009] Figure 1 This is an isometric view of the main structure of this utility model; Figure 2 This is a rear axonometric view of the heating furnace assembly structure of this utility model; Figure 3 This is a front axonometric view of the heating furnace assembly structure of this utility model; Figure 4 This is an isometric view of the pressure head assembly structure of this utility model; Figure 5 This is an isometric view of the vacuum system structure of this utility model.

[0010] In the diagram: 101-Upper frame, 102-Lower frame, 103-Column, 2-Hydraulic system, 3-Oil cylinder, 4-Pneumatic forming component, 5-Pressure head assembly, 501-Guide column, 502-Upper slider, 503-Pressure head, 504-Pressure block, 505-Pressure plate, 506-Bellwall, 6-Vacuum system, 601-First normally closed pneumatic high-vacuum baffle valve, 602-Second normally closed pneumatic high-vacuum baffle valve, 603-Roots pump, 604-Electromagnetic vacuum differential pressure type 605-Inflation valve, 606-Slide valve pump, 607-Third normally closed pneumatic high vacuum baffle valve, 608-High vacuum oil diffusion pump, 609-Fourth normally closed pneumatic high vacuum baffle valve, 610-Inflation assembly, 611-Pneumatic components, 612-Mechanical vacuum pump, 7-Air cooling system, 8-Heating furnace assembly, 801-Furnace shell assembly, 802-Gear ring assembly, 803-Furnace door assembly, 804-Hinge assembly, 9-Vacuum control cabinet, 10-Power supply cabinet. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Please see Figure 1-5This utility model provides a vacuum superplastic forming-diffusion bonding device, including a bed assembly, the bed assembly including an upper frame 101 and a lower frame 102, a column 103 between the upper frame 101 and the lower frame 102, a heating furnace assembly 8 inside the bed assembly and on the lower frame 102, a pressure head assembly 5 at the lower end of the upper frame 101 and above the heating furnace assembly 8, a hydraulic system 2 on one side of the upper surface of the upper frame 101, and a cylinder 3 connected to the hydraulic system 2 via a hydraulic pipeline on the other side of the upper surface of the upper frame 101, the cylinder 3 passing through the upper frame 101 and connected to the pressure head assembly 5, a vacuum system 6 inside the bed assembly and connected to the heating furnace assembly 8 via a vacuum pipeline, an air-cooling system 7 on the other side of the heating furnace assembly 8, and a pneumatic forming component 4 on one side of the bed assembly, the pneumatic forming component 4 being connected to the vacuum system 6 via a circuit; The heating furnace assembly 8 includes a furnace shell assembly 801, which is a columnar cavity structure with an octagonal cross-section for both the inner and outer cavities. The furnace shell assembly 801 has an open structure at both ends, with the outer sides of the two openings of the furnace shell assembly 801 having a circular structure. Both openings of the furnace shell assembly 801 are hinged to furnace door assemblies 803 via hinge assemblies 804. Both furnace door assemblies 803 are sealed and locked to the furnace shell assembly 801 via gear ring assemblies 802.

[0013] In use, the upper frame 101, lower frame 102, and column 103 form the bed assembly structure, which fixes and supports the entire equipment. The parts requiring vacuum high-speed forming-diffusion processing are placed inside the heating furnace assembly 8, ensuring the parts correspond to the pressure head assembly 5. Then, the furnace door assembly 803 is closed. The furnace door assembly 803 is rotatably connected to the furnace shell assembly 801 via the hinge assembly 804, and is locked and sealed to the furnace shell assembly 801 via the gear ring assembly 802, ensuring the heating furnace assembly 803 is secure. The internal sealing is then achieved by vacuuming the interior of the heating furnace assembly 8 through the vacuum system 6. The gas-controlled forming component 4 includes a high-pressure normally closed solenoid valve, a pressure sensor, and a proportional pressure regulating valve. When the vacuum system 6 completes the vacuuming, the gas-controlled forming component 4 automatically opens the high-pressure normally closed solenoid valve, allowing high-pressure gas to flow to the proportional pressure regulating valve and adjusting the gas pressure to the target pressure. When the pressure sensor detects that the actual gas pressure meets the target pressure, it automatically maintains a constant gas pressure and activates the heating function of the heating furnace assembly 8 to heat the parts. The hydraulic system 2 and the oil cylinder 3 drive the pressure head assembly 5 to move downward, thereby performing vacuum high-speed forming-diffusion processing on the parts. After the processing is completed, the entire equipment is cooled by air cooling through the air cooling system 7.

[0014] Preferably, the vacuum system 6 includes a base 606, a Roots pump 603 is mounted on a raised platform in the middle of the base 606, a mechanical vacuum pump 612 is mounted on one side of the upper surface of the base 606, and a slide valve pump 605 is mounted on the other side of the upper surface of the base 606. The slide valve pump 605 is connected to the outlet of the Roots pump 603 through a first pre-stage pipeline, a second pre-stage pipeline, and an electromagnetic vacuum differential pressure charging valve 604. The suction port of the Roots pump 603 is connected to a three-way pipeline, and the other two ends of the three-way pipeline... Each outlet is connected to a second normally closed pneumatic high-vacuum baffle valve 602 and a fourth normally closed pneumatic high-vacuum baffle valve 609, respectively. The second normally closed pneumatic high-vacuum baffle valve 602 is connected to one side of the first normally closed pneumatic high-vacuum baffle valve 601 via a suction pipe. The other side of the first normally closed pneumatic high-vacuum baffle valve 601 is connected to the heating furnace assembly 8 via a flange. The bottom end of the first normally closed pneumatic high-vacuum baffle valve 601 is connected to a high-vacuum oil diffusion pump 608 via a flange. A pipe extends from the lower end of the side wall of pump 608 and connects to the fourth normally closed pneumatic high-vacuum baffle valve 609 via a third pre-stage pipe. The mechanical vacuum pump 612 is connected to the third pre-stage pipe via the third normally closed pneumatic high-vacuum baffle valve 607. The first normally closed pneumatic high-vacuum baffle valve 601 is provided with an inflation component 610 on the side near the air-cooling system 7. A pneumatic component 611 is provided on one side wall of the first normally closed pneumatic high-vacuum baffle valve 601. The suction pipe and the three-way pipe also extend... A branch line is extended to bypass the second normally closed pneumatic high-vacuum baffle valve 602 and connected via a bellows. The purpose is to perform the following rough evacuation steps: When the vacuum system is working, the mechanical vacuum pump 612 acts as a holding pump to maintain the gas pressure; the slide valve pump 605 is used for rough evacuation to rapidly reduce the pressure in the heating furnace assembly 8 from atmospheric pressure to the low vacuum range to meet the working conditions of the Roots pump 603. The Roots pump 603 is used for the intermediate evacuation stage. When the pressure is reduced to the working range of the diffusion pump 608, the diffusion pump 608 is turned on for the final evacuation.

[0015] Preferably, the pressure head assembly 5 includes a guide post 501, the upper end of which is connected to the hydraulic cylinder 3. The lower end of the guide post 501 is provided with an upper slider 502. Pressure heads 503 are located at the four corners of the lower end of the upper slider 502. The lower end of the pressure head 503 penetrates the upper end of the heating furnace assembly 8. A pressure plate 505 is connected to the lower end of the pressure head 503 and inside the heating furnace assembly 8 via a pressure block 504. The outer surface of the pressure head 503 and inside the heating furnace assembly... The upper end of component 8 is provided with a bellows 506. The hydraulic cylinder 3 is connected to the upper slider 502 through the guide post 501. The upper slider 502 is set above the heating furnace assembly 8. The lower end of the upper slider 502 is provided with a pressure head 503. The pressure head 503 penetrates the furnace shell assembly 801 and sets the pressure plate 505 inside the furnace shell assembly 801 through the pressure block 504 to ensure the sealing between the pressure head 503 and the furnace shell assembly 801. The hydraulic cylinder 3 can drive the pressure plate 505 to apply pressure to the components.

[0016] Preferably, a vacuum control cabinet 9 and a power supply cabinet 10 are respectively provided on the outer sides of the bed assembly. The vacuum control cabinet 9 is connected to the vacuum system 6 and the gas-controlled forming component 4 through a line. The power supply cabinet 10 is connected to the overall equipment through a line. The vacuum control cabinet 9 is located on one side of the edge of the vacuum superplastic forming and diffusion connecting equipment, and the power supply cabinet 10 is located on the other side of the edge of the vacuum superplastic forming and diffusion connecting equipment.

[0017] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum superplastic forming-diffusion bonding device, characterized in that: The system includes a bed frame assembly, which comprises an upper frame (101) and a lower frame (102). A column (103) is provided between the upper frame (101) and the lower frame (102). A heating furnace assembly (8) is provided inside the bed frame assembly and on the lower frame (102). A pressure head assembly (5) is provided at the lower end of the upper frame (101) and above the heating furnace assembly (8). A hydraulic system (2) is provided on one side of the upper surface of the upper frame (101), and the other side of the upper surface of the upper frame (101) is also provided. A cylinder (3) is connected to the hydraulic system (2) via a hydraulic pipeline. The cylinder (3) passes through the upper frame (101) and is connected to the pressure head assembly (5). A vacuum system (6) is provided inside the bed assembly and connected to one side of the heating furnace assembly (8) via a vacuum pipeline. An air-cooling system (7) is provided on the other side of the heating furnace assembly (8). A pneumatic forming component (4) is provided on one side of the bed assembly. The pneumatic forming component (4) is connected to the vacuum system (6) via a line. The heating furnace assembly (8) includes a furnace shell assembly (801). The furnace shell assembly (801) is a columnar cavity structure with an octagonal cross-section for both the inner and outer cavities. The furnace shell assembly (801) has an open structure at both ends. The outer sides of the two openings of the furnace shell assembly (801) are circular. Both openings of the furnace shell assembly (801) are hinged to furnace door assemblies (803) via hinge assemblies (804). Both furnace door assemblies (803) are sealed and locked to the furnace shell assembly (801) via gear ring assemblies (802).

2. The vacuum superplastic forming-diffusion bonding equipment according to claim 1, characterized in that: The vacuum system (6) includes a base (606), a Roots pump (603) is provided on the raised platform in the middle of the base (606), a mechanical vacuum pump (612) is provided on one side of the upper surface of the base (606), and a slide valve pump (605) is provided on the other side of the upper surface of the base (606). The slide valve pump (605) is connected to the outlet of the Roots pump (603) through a first pre-stage pipeline, a second pre-stage pipeline and an electromagnetic vacuum differential pressure charging valve (604). The suction port of the Roots pump (603) is connected to a three-way pipeline. The other two outlets of the three-way pipeline are respectively connected to a second normally closed pneumatic high vacuum baffle valve (602) and a fourth normally closed pneumatic high vacuum baffle valve (609). The second normally closed pneumatic high vacuum baffle valve (602) is connected to the first normally closed pneumatic high vacuum baffle through the suction pipeline. On one side of valve (601), the other side of the first normally closed pneumatic high vacuum baffle valve (601) is connected to the heating furnace assembly (8) via a flange. The bottom end of the first normally closed pneumatic high vacuum baffle valve (601) is connected to a high vacuum oil diffusion pump (608) via a flange. A pipeline extends from the lower end of the side wall of the high vacuum oil diffusion pump (608) and is connected to the fourth normally closed pneumatic high vacuum baffle valve (609) via a third pre-pipeline. The mechanical vacuum pump (612) is connected to the third pre-pipeline via the third normally closed pneumatic high vacuum baffle valve (607). The first normally closed pneumatic high vacuum baffle valve (601) is provided with an air filling assembly (610) on the side near the air cooling system (7). A pneumatic component (611) is provided on one side wall of the first normally closed pneumatic high vacuum baffle valve (601).

3. The vacuum superplastic forming-diffusion bonding equipment according to claim 1, characterized in that: The pressure head assembly (5) includes a guide post (501), the upper end of which is connected to the oil cylinder (3), the lower end of which is provided with an upper slider (502), and pressure heads (503) are provided at the four corners of the lower end of the upper slider (502). The lower end of the pressure head (503) penetrates the upper end of the heating furnace assembly (8). The lower end of the pressure head (503) and inside the heating furnace assembly (8) is connected to a pressure plate (505) via a pressure block (504). The outer side of the pressure head (503) and the upper end of the heating furnace assembly (8) are provided with a bellows (506).

4. The vacuum superplastic forming-diffusion bonding equipment according to claim 1, characterized in that: Vacuum control cabinet (9) and power supply cabinet (10) are respectively provided on the outer sides of the bed assembly.

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