CN116689596B - Super-plastic forming die and technology for airplane baffle - Google Patents
Super-plastic forming die and technology for airplane baffle Download PDFInfo
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- CN116689596B CN116689596B CN202310971854.3A CN202310971854A CN116689596B CN 116689596 B CN116689596 B CN 116689596B CN 202310971854 A CN202310971854 A CN 202310971854A CN 116689596 B CN116689596 B CN 116689596B
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- 238000005516 engineering process Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 139
- 239000011261 inert gas Substances 0.000 claims description 27
- 238000009792 diffusion process Methods 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 21
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 10
- 229910000679 solder Inorganic materials 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 8
- 210000003437 trachea Anatomy 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 6
- 238000012545 processing Methods 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
- B21D26/055—Blanks having super-plastic properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
- B21D26/059—Layered blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to the technical field of superplastic forming, and discloses a superplastic forming die and a process for an aircraft baffle, which solve the problems that a supporting part is lacking in an inflation hole, a bulge is easily caused on a forming part, and the qualification rate of products is influenced; the bulge is effectively avoided on the forming part, the product percent of pass is improved, the probability of post-repair processing is reduced, and the method is convenient for practical use.
Description
Technical Field
The invention belongs to the technical field of superplastic forming, and particularly relates to a superplastic forming die and a superplastic forming process for an aircraft baffle.
Background
In recent years, with the continuous improvement of the performance of an aerospace vehicle, the integration and the weight reduction of the titanium alloy multilayer structure become the development trend of aerospace parts, and the titanium alloy multilayer structure is hollow, so that the weight reduction of the vehicle can be met to the greatest extent. In the prior art, chinese patent publication No. CN114346396a discloses a double-layer flap panel superplastic forming/diffusion connecting mold and method, high-pressure inert gas is introduced into a vent pipe of a lower mold, pressure maintaining is performed to realize superplastic forming of a cap rib layer, air pressure in the vent pipe is unloaded after the cap rib is completely adhered to the mold, and the temperature is lowered to realize superplastic forming/diffusion connection of the double-layer flap panel, however, in the process of adhering a cavity to a forming part, because an inflation hole for diffusion connection is formed in the cavity, and a supporting part is lacking in the inflation hole, protrusions are easily formed on the forming part, and the qualification rate of products is affected.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the superplastic forming die and the process for the airplane baffle, which effectively solve the problems that the lack of a supporting part in an inflation hole in the prior art easily causes the bulge on the forming part and influences the qualification rate of products.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an aircraft baffle superplastic forming die, including lower mould and last mould, set up the die cavity on the last mould, set up first gas vent on the lower mould, fixedly connected with and first gas vent matched with first trachea on the lower mould, and first gas vent is used for placing the second trachea on the double-deck slab, be equipped with in the first gas vent with second trachea matched with sealing member, the bottom fixedly connected with first sealing ring of last mould, set up a plurality of recesses on the last mould, the bottom inner wall of recess and the top inner wall of die cavity pass through the second gas vent intercommunication, and be equipped with sealed round platform in the second gas vent, the top fixedly connected with of last mould a plurality of seal shells, and the figure that seal shell and recess set up is unanimous, the seal shell is located the top of corresponding recess, be equipped with the third trachea on the seal shell, the bottom inner wall of recess and the top inner wall of die cavity are through two through-holes intercommunication, adjacent two through-holes are located the both sides of sealed round platform respectively, be equipped with the jack post, jack post and through the guide unit connection, and the bottom horizontal position of sealed round platform and jack post all are unanimous with the top inner wall horizontal position of die cavity, seal platform horizontal position, seal shell and top inner wall through the top inner wall of seal platform through the jack connection unit, seal shell and push down contact top cover are equipped with the swing cover through the swing cover, the top of seal shell and the swing cover, the top cover is equipped with the swing cover through the swing cover, and the swing cover is connected with the top through the swing cover.
Preferably, the press adjustment assembly comprises a first movable seat arranged above the press plate, two side plates are fixedly connected to the bottom of the first movable seat, rectangular holes are formed in the side plates, two adjacent side plates are respectively located on two sides of the press plate, movable columns are arranged in the rectangular holes and fixedly connected with the press plate, two threaded sleeves penetrate through the first movable seat, the first movable seat and the threaded sleeves are connected in a threaded mode, a first fixing plate is sleeved outside the threaded sleeves, a bearing is arranged at the joint of the threaded sleeves and the first fixing plate, the top of the first fixing plate is fixedly connected with the top inner wall of the sealing shell, a limiting plate is fixedly connected to the first movable seat, the limiting plate penetrates through the first fixing plate, and a separation type rotating assembly matched with the two threaded sleeves is arranged in the sealing shell.
Preferably, the split type rotating assembly comprises a rotating shaft arranged in a sealing shell, two adjacent thread sleeves are sleeved outside the rotating shaft, the rotating shaft is connected with the sealing shell through a horizontal adjuster, two ends of the rotating shaft are respectively sleeved with a rotating sleeve, the rotating sleeves penetrate through the sealing shell, a bearing is arranged at the joint of the rotating sleeves and the sealing shell, one end of each rotating sleeve, which is far away from the rotating shaft, is fixedly connected with a guiding strip on the inner wall of the rotating sleeve, a first guiding groove matched with the guiding strip is formed in the rotating shaft, the guiding strip is located in the corresponding first guiding groove, and the thread sleeves are connected with the rotating shaft through sliding engagement pieces.
Preferably, the sliding engagement piece comprises a gear fixedly sleeved outside the threaded sleeve, one ends, far away from each other, of the two adjacent threaded sleeves are respectively provided with a first gear ring, the first gear rings are connected with the rotating shaft through a bracket, one sides, close to the two adjacent first gear rings, of the two adjacent first gear rings are respectively provided with a second gear ring, the second gear rings and the first gear rings are respectively sleeved outside the same gear, and the second gear rings are connected with the sealing shell through elastic pieces.
Preferably, the elastic piece comprises at least two supporting parts fixedly mounted on the second gear ring, a first guide column penetrates through the supporting parts, one end of the first guide column is fixedly connected with the inner wall of the sealing shell, a first extension spring is sleeved outside the first guide column, and two ends of the first extension spring are fixedly connected with the supporting parts and the inner wall of the sealing shell respectively.
Preferably, the level adjuster comprises a second movable seat sleeved outside the rotating shaft, a bearing is arranged at the joint of the rotating shaft and the second movable seat, a second fixed plate is arranged on one side of the second movable seat, the second fixed plate is fixedly connected with the inner wall of the sealing shell, and the second fixed plate is connected with the second movable seat through a hydraulic telescopic rod.
Preferably, the rotating unit comprises a connecting shaft fixedly mounted on the swinging sleeve, one end of the connecting shaft, far away from the swinging sleeve, is connected with the inner wall of the groove through a bearing, the guiding unit comprises a guiding block fixedly mounted on the pushing column, a second guiding groove matched with the guiding block is formed in the inner wall of the through hole, and the guiding block is located in the corresponding second guiding groove.
Preferably, the stretching unit comprises a prism fixedly mounted at the top of the sealing round table, a fixing column is arranged above the prism, the top end of the fixing column is fixedly connected with the inner wall of the top of the sealing shell, a sliding groove is formed in the fixing column, the top end of the prism is located in the sliding groove, and the top end of the prism is connected with the inner wall of the top of the sliding groove through a second stretching spring.
Preferably, the sealing member is including setting up in the second sealing ring in first gas pocket, and the second sealing ring is used for supporting the tracheal bottom of second, and the below of second sealing ring is equipped with solid fixed ring, and gu fixed ring and the inner wall fixed connection of first gas pocket, the bottom of second sealing ring and gu fixed ring's top are connected through a plurality of compression springs, and the bottom fixedly connected with of second sealing ring a plurality of second guide posts, and the second guide post runs through gu fixed ring.
The invention also provides an aircraft baffle superplastic forming process, which comprises the aircraft baffle superplastic forming die, and comprises the following steps:
step one: according to the position of the forming part, coating a solder resist on the double-layer plate blank, wherein the position of the non-forming part corresponding to the non-forming part does not need to be coated with the solder resist, then welding and sealing edges on the double-layer plate blank by a worker through welding equipment, welding a second air pipe on the double-layer plate blank, and arranging an air inlet matched with the second air pipe on the double-layer plate blank;
step two: after the double-layer slab is processed, a worker places the double-layer slab on a lower die, a second air pipe is inserted into the first air hole, finally, an upper die is closed, the lower die and the upper die are heated to the superplastic forming diffusion connection temperature of the titanium alloy, after the lower die and the upper die reach the superplastic forming diffusion connection temperature of the titanium alloy, mechanical pressure is applied to the upper die, so that a sealed cavity is formed by the first sealing ring, the double-layer slab and the cavity, high-pressure inert gas is simultaneously introduced into a third air pipe, the high-pressure inert gas enters into a sealing shell and a groove, the high-pressure inert gas enters into the cavity through a gap between a sealing round table and the inner wall of the second air hole, and pressure is maintained in a set time period, so that the diffusion connection of a non-superplastic forming area of the double-layer slab is realized;
step three: after the diffusion connection is finished, unloading the air pressure in the third air pipe, and simultaneously introducing high-pressure inert gas into the first air pipe, wherein the high-pressure inert gas enters the double-layer plate blank through the first air hole and the second air pipe, and maintaining the pressure in a set time period so as to enable the forming part to be subjected to superplastic forming;
step four: in the superplastic forming process of the forming part, the forming part pushes the pushing column to move upwards, the pushing column drives the swinging sleeve to swing through the supporting plate, the swinging sleeve drives the pressing plate to rotate, the inclination angle of the pressing plate is changed, the bottom end of the pressing plate drives the sealing round table to move downwards, when the forming part is combined with the inner wall of the cavity, the bottom end of the pushing column completely slides into the through hole, the horizontal position of the bottom of the pushing column is consistent with the horizontal position of the top inner wall of the cavity, meanwhile, the sealing round table completely slides into the second air hole, the horizontal position of the bottom of the sealing round table is consistent with the horizontal position of the top inner wall of the cavity, the through hole and the second air hole are respectively filled through the pushing column and the sealing round table, the bulge is avoided, after the forming part is stuck, the air pressure in the first air pipe is unloaded, and the air pressure is cooled, and superplastic forming and diffusion connection of the aircraft baffle can be realized.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the position of the forming part, the solder resist is smeared on the double-layer plate blank, the corresponding position of the non-forming part does not need to smear the solder resist, then a worker welds the double-layer plate blank through welding equipment to seal edges, welds a second air pipe on the double-layer plate blank, and sets an air inlet matched with the second air pipe on the double-layer plate blank, after the double-layer plate blank is processed, the worker places the double-layer plate blank on a lower die, inserts the second air pipe into the first air hole, finally closes an upper die, heats the lower die and the upper die to the superplastic forming diffusion connection temperature of the titanium alloy, after the lower die and the upper die reach the superplastic forming diffusion connection temperature of the titanium alloy, applies mechanical pressure to the upper die to enable the first sealing ring, the double-layer plate blank and the cavity to form a closed cavity, and simultaneously introduces high-pressure inert gas into a third air pipe, and the high-pressure inert gas enters into a sealing shell and a groove, the high-pressure inert gas enters the cavity through a gap between the sealing round table and the inner wall of the second air hole, pressure is maintained in a set period of time to realize the diffusion connection of the non-superplastic forming area of the double-layer slab, after the diffusion connection is finished, the air pressure in the third air pipe is unloaded, the high-pressure inert gas is simultaneously introduced into the first air pipe, the high-pressure inert gas enters the double-layer slab through the first air hole and the second air pipe, the pressure is maintained in the set period of time to enable the forming part to superplastic forming, the forming part pushes the pushing column to move upwards in the superplastic forming process of the forming part, the pushing column drives the swinging sleeve to swing through the supporting plate, the swinging sleeve drives the pressing plate to rotate to change the inclination angle of the pressing plate, the bottom end of the pressing plate drives the sealing round table to move downwards, and when the forming part is combined with the inner wall of the cavity, the bottom end of the pushing column completely slides into the through hole, the horizontal position of the bottom of the pushing column is consistent with the horizontal position of the top inner wall of the cavity, meanwhile, the sealing round table completely slides into the second air hole, the horizontal position of the bottom of the sealing round table is consistent with the horizontal position of the top inner wall of the cavity, the through hole and the second air hole are respectively filled by the pushing column and the sealing round table, the bulge on the forming part is avoided, after the forming part is stuck with a mold, the air pressure in the first air pipe is unloaded and cooled, the superplastic forming and diffusion connection of the aircraft baffle can be realized, the bulge on the forming part is effectively avoided, the product percent of pass is improved, the probability of post repair processing is reduced, and the method is convenient for practical use;
(2) When the bottom end of the pushing column is completely slid into the through hole and the sealing round table is not completely slid into the second air hole, the corresponding threaded sleeve is driven to rotate by the separated rotating assembly, the first movable seat and the side plate are driven to move in the horizontal direction by the threaded sleeve, the side plate pushes the movable column to slide in the rectangular hole, the length of the pressing plate in the swinging sleeve is changed, so that the bottom end of the pressing plate presses the sealing round table to move downwards, finally, the position of the sealing round table is enabled to be consistent, correction can be carried out, and when the horizontal position of the bottom of the pushing column is consistent with the horizontal position of the top inner wall of the cavity, the horizontal position of the bottom of the sealing round table is also consistent with the horizontal position of the top inner wall of the cavity;
(3) When the rotating shaft moves horizontally, the guide bar slides in the first guide groove, when the rotating disc rotates, the rotating disc drives the rotating shaft to synchronously rotate through the rotating sleeve and the guide bar, the first tension spring is in a tension state in an initial state, the first tension spring applies tension to the supporting part and the second gear ring so as to enable the second gear ring to be clung to the first gear ring, when the rotating shaft moves horizontally, the rotating shaft drives the first gear ring to move through the support, when the first gear ring moves in a direction away from the second gear ring, the first gear ring is separated from a gear corresponding to the first gear ring, the first tension spring drives the supporting part and the second gear ring to move so as to enable the second gear ring to be completely sleeved outside the gear, at the moment, the gear and the thread sleeve are fixed relative to the second gear ring and the sealing shell, otherwise, when the first gear ring moves in a direction close to the second gear ring, the first gear ring pushes the second gear ring to separate from the gear, the first gear ring is completely sleeved outside the gear, the gear and the thread bush can rotate relative to the sealing shell, when the rotating shaft rotates, the rotating shaft can drive the gear and the thread bush to synchronously rotate through the bracket and the first gear ring, when the rotating shaft and the two thread bushes do not need to be driven to rotate, the rotating shaft is centrally arranged in the sealing shell, the second gear ring and the first gear ring are both sleeved outside the same gear, the rotating shaft and the thread bush are both fixed with the second gear ring and the sealing shell, the situation that the rotating shaft and the thread bush rotate due to non-human factors is avoided, when one of the thread bushes needs to be driven to rotate, the hydraulic telescopic rod drives the second movable seat to move, the second movable seat drives the rotating shaft to move in the horizontal direction, so that the rotating shaft moves towards the direction of the other thread bush which does not need to rotate, the rotating shaft drives the two first gear rings to move through the bracket, one of the first gear rings is completely sleeved outside the screw sleeve and the gear which need to rotate, the first gear ring pushes the second gear ring adjacent to the first gear ring to be no longer positioned outside the gear, so that the rotating shaft and the screw sleeve which need to rotate can synchronously rotate, meanwhile, as the rotating shaft moves horizontally, the other first gear ring is not sleeved outside the screw sleeve and the gear which do not need to rotate, the other second gear ring is completely sleeved outside the screw sleeve and the gear which do not need to rotate, the screw sleeve and the gear which do not need to rotate are fixed relative to the sealing shell, when a worker drives the rotating shaft to rotate through the turntable, the rotating shaft can synchronously rotate with the screw sleeve which need to rotate, the screw sleeve which do not need to rotate is fixed relative to the sealing shell, and a single screw sleeve can be driven, and when the two screw sleeves do not need to rotate, the two screw sleeves can be simultaneously locked;
(4) Through the design of connecting axle and bearing to make the swing cover rotate and connect in the recess, through the design of guide block and second guide way, so that promote the steady removal of relative through-hole vertical direction of post, when promoting the post and move up, when making the sealed round platform of push down of board drive, the prismatic sealing round platform moves down, the prismatic length that is located the spout shortens, second extension spring is in tensile state, finally make sealed round platform slide into the second gas pocket completely, when there is not external force to the bottom of promoting the post to support, promote the post and move down because of gravity, simultaneously second extension spring drive prismatic and sealed round platform move up, make sealed round platform move up relative the second gas pocket, so that leave the gap between the inner wall of sealed round platform and second gas pocket, when letting in high-pressure inert gas in the third trachea, high-pressure inert gas can enter into in the die cavity from the gap between sealed round platform and the second gas pocket, when the bottom of second tracheal inserts in the first gas pocket, the second gas pocket promotes the second sealing ring down, compression spring is in compression state, the top and the bottom of second tracheal bottom of pushing the second gas, the second gas pocket moves down because of gravity, make between the second gas seal ring and the fixed direction of the second air pocket is passed through the relative high-pressure seal ring when the first air is passed through to the high-pressure design.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the lower die of the present invention partially in section;
FIG. 3 is an enlarged partial schematic view of the present invention at A in FIG. 2;
FIG. 4 is a schematic view of the upper die of the present invention partially in section;
FIG. 5 is an enlarged partial schematic view of the present invention at B in FIG. 4;
FIG. 6 is a schematic diagram of a level adjuster according to the present invention;
FIG. 7 is a schematic view of the structure of the invention with the shaft and rotating sleeve separated;
FIG. 8 is a schematic view of the structure of the prism and the fixed column of the present invention.
In the figure: 1. a lower die; 2. an upper die; 3. a cavity; 4. a first air hole; 5. a first air tube; 6. a first seal ring; 7. a double-layer slab; 8. a second air pipe; 9. a molding part; 10. a groove; 11. a sealed housing; 12. a third air pipe; 13. a second air hole; 14. sealing round platform; 15. a through hole; 16. pushing the column; 17. a support plate; 18. pressing the plate; 19. a swinging sleeve; 20. a first movable seat; 21. a side plate; 22. a rectangular hole; 23. a movable column; 24. a rotating shaft; 25. a thread sleeve; 26. a first fixing plate; 27. a limiting plate; 28. a rotating sleeve; 29. a turntable; 30. a first guide groove; 31. a guide bar; 32. a gear; 33. a first ring gear; 34. a bracket; 35. a second ring gear; 36. a support part; 37. a first guide post; 38. a first extension spring; 39. a second movable seat; 40. a second fixing plate; 41. a hydraulic telescopic rod; 42. a connecting shaft; 43. a guide block; 44. a second guide groove; 45. a prism; 46. fixing the column; 47. a chute; 48. a second tension spring; 49. a second seal ring; 50. a fixing ring; 51. a second guide post; 52. compressing the spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the first embodiment, as shown in fig. 1 to 8, the invention comprises a lower die 1 and an upper die 2, a cavity 3 is arranged on the upper die 2, a first air hole 4 is arranged on the lower die 1, a first air pipe 5 matched with the first air hole 4 is fixedly connected on the lower die 1, the first air hole 4 is used for placing a second air pipe 8 on a double-layer slab 7, a sealing piece matched with the second air pipe 8 is arranged in the first air hole 4, a first sealing ring 6 is fixedly connected with the bottom of the upper die 2, a plurality of grooves 10 are arranged on the upper die 2, the bottom inner wall of the grooves 10 is communicated with the top inner wall of the cavity 3 through a second air hole 13, a sealing round table 14 is arranged in the second air hole 13, a plurality of sealing shells 11 are fixedly connected at the top of the upper die 2, the numbers of the sealing shells 11 and the grooves 10 are consistent, the sealing shells 11 are positioned above the corresponding grooves 10, a third air pipe 12 is arranged on the sealing shells 11, the bottom inner wall of the groove 10 is communicated with the top inner wall of the cavity 3 through two through holes 15, two adjacent through holes 15 are respectively positioned at two sides of the sealing round table 14, a pushing column 16 is arranged in each through hole 15, the pushing column 16 and the through holes 15 are connected through a guide unit, the bottom horizontal position of the sealing round table 14 and the bottom horizontal position of the pushing column 16 are consistent with the top inner wall of the cavity 3, the sealing round table 14 and the sealing shell 11 are connected through a stretching unit, two pressing plates 18 are arranged above the sealing round table 14, the pressing plates 18 are obliquely arranged, a swinging sleeve 19 is sleeved outside the pressing plates 18, the swinging sleeve 19 is connected with the groove 10 through a rotating unit, the top of the pushing column 16 is fixedly connected with a supporting plate 17, the top end of the supporting plate 17 is contacted with the swinging sleeve 19, a pressing adjusting component matched with the pressing plates 18 is arranged on the sealing shell 11, through promoting post 16 and sealed round platform 14 respectively to filling through-hole 15 and second gas pocket 13, avoid forming portion 9 to appear protruding, forming portion 9 paste the mould after, unload the atmospheric pressure in the first gas tube 5 and cool down, can realize the superplastic forming and the diffusion connection of aircraft baffle, effectually avoid forming portion 9 to appear protruding, improved the product percent of pass, reduce the probability of later stage repair processing, the in-service use of being convenient for.
In the second embodiment, based on the first embodiment, as shown in fig. 4, fig. 5, fig. 6 and fig. 8, the pressing adjustment assembly includes a first movable seat 20 disposed above the pressing plate 18, two side plates 21 are fixedly connected to the bottom of the first movable seat 20, rectangular holes 22 are formed in the side plates 21, two adjacent side plates 21 are respectively located at two sides of the pressing plate 18, a movable column 23 is disposed in the rectangular holes 22, the movable column 23 is fixedly connected with the pressing plate 18, two threaded sleeves 25 penetrate through the first movable seat 20, the first movable seat 20 is in threaded connection with the threaded sleeves 25, a first fixed plate 26 is sleeved outside the threaded sleeves 25, bearings are disposed at the connection positions of the threaded sleeves 25 and the first fixed plate 26, the top of the first fixed plate 26 is fixedly connected with the top inner wall of the sealing shell 11, a limiting plate 27 is fixedly connected to the first movable seat 20, the limiting plate 27 penetrates through the first fixed plate 26, and a separate rotating assembly matched with the two threaded sleeves 25 is disposed in the sealing shell 11;
when the pushing column 16 moves upwards, the pushing column 16 drives the swinging sleeve 19 to swing through the supporting plate 17, the swinging sleeve 19 drives the pressing plate 18 to synchronously rotate, the movable column 23 slides in the rectangular hole 22, the pressing plate 18 pushes the sealing round table 14 to move downwards, when the bottom end of the pushing column 16 slides into the through hole 15 completely and the sealing round table 14 does not slide into the second air hole 13 completely, the corresponding threaded sleeve 25 is driven to rotate through the separated rotating assembly, the threaded sleeve 25 drives the first movable seat 20 and the side plate 21 to move horizontally, the side plate 21 pushes the movable column 23 to slide in the rectangular hole 22, the length of the pressing plate 18 in the swinging sleeve 19 is changed, so that the bottom end of the pressing plate 18 presses the sealing round table 14 to move downwards, the position of the sealing round table 14 is finally enabled to be consistent with the horizontal position of the top inner wall of the cavity 3, and when the horizontal position of the bottom of the pushing column 16 is not consistent with the horizontal position of the top inner wall of the cavity 3, the horizontal position of the sealing round table 14 is enabled to be corrected, and the horizontal position of the bottom of the sealing round table 14 is also consistent with the horizontal position of the top inner wall of the cavity 3.
In the third embodiment, based on the second embodiment, as shown in fig. 4, 5, 6 and 7, the separated rotating assembly includes a rotating shaft 24 disposed in a sealed housing 11, two adjacent screw sleeves 25 are sleeved outside the rotating shaft 24, the rotating shaft 24 and the sealed housing 11 are connected through a level adjuster, two ends of the rotating shaft 24 are respectively sleeved with a rotating sleeve 28, the rotating sleeve 28 penetrates through the sealed housing 11, a bearing is disposed at a connection position of the rotating sleeve 28 and the sealed housing 11, one end of the rotating sleeve 28 far away from the rotating shaft 24 is fixedly connected with a turntable 29 disposed at one side of the sealed housing 11, a guide strip 31 is fixedly connected to an inner wall of the rotating sleeve 28, a first guide groove 30 matched with the guide strip 31 is disposed on the rotating shaft 24, the guide strip 31 is disposed in the corresponding first guide groove 30, the screw sleeve 25 and the rotating shaft 24 are connected through a sliding engagement member, the sliding engagement member includes a gear 32 fixedly sleeved outside the screw sleeve 25, the first gear ring 33 is respectively arranged at one end of each of the two adjacent thread sleeves 25, which is far away from each other, the first gear ring 33 is connected with the rotating shaft 24 through a bracket 34, the second gear ring 35 is respectively arranged at one side of each of the two adjacent first gear rings 33, which is close to each other, the second gear ring 35 and the first gear ring 33 are both sleeved outside the same gear 32, the second gear ring 35 is connected with the sealing shell 11 through elastic members, each elastic member comprises at least two supporting parts 36 fixedly arranged on the second gear ring 35, a first guide column 37 penetrates through the supporting parts 36, one end of each first guide column 37 is fixedly connected with the inner wall of the sealing shell 11, a first extension spring 38 is sleeved outside each first guide column 37, two ends of each first extension spring 38 are respectively fixedly connected with the supporting parts 36 and the inner wall of the sealing shell 11, each horizontal adjuster comprises a second movable seat 39 sleeved outside the rotating shaft 24, the joint of the rotating shaft 24 and the second movable seat 39 is provided with a bearing, one side of the second movable seat 39 is provided with a second fixed plate 40, the second fixed plate 40 is fixedly connected with the inner wall of the sealing shell 11, and the second fixed plate 40 is connected with the second movable seat 39 through a hydraulic telescopic rod 41;
when the rotating shaft 24 moves horizontally, the guide bar 31 slides in the first guide groove 30, when the rotating disc 29 rotates, the rotating disc 29 drives the rotating shaft 24 to synchronously rotate through the rotating sleeve 28 and the guide bar 31, the first tension spring 38 is in a tension state in an initial state, the first tension spring 38 applies tension to the supporting part 36 and the second gear ring 35 so as to enable the second gear ring 35 to be closely attached to the first gear ring 33, when the rotating shaft 24 moves horizontally, the rotating shaft 24 drives the first gear ring 33 to move through the bracket 34, when the first gear ring 33 moves in a direction away from the second gear ring 35, the first gear ring 33 is separated from the gear 32 corresponding to the first gear ring 33, the first tension spring 38 drives the supporting part 36 and the second gear ring 35 to move so as to enable the second gear ring 35 to be completely sleeved outside the gear 32, and at the moment, the gear 32 and the thread bush 25 are fixed relative to the second gear ring 35 and the sealing shell 11, and vice versa, when the first gear ring 33 moves towards the direction approaching to the second gear ring 35, the first gear ring 33 pushes the second gear ring 35 to separate from the gear 32, the first gear ring 33 is completely sleeved outside the gear 32, the gear 32 and the thread bush 25 can rotate relative to the seal shell 11, when the rotating shaft 24 rotates, the rotating shaft 24 can drive the gear 32 and the thread bush 25 to synchronously rotate through the bracket 34 and the first gear ring 33, when the rotating shaft 24 and the two thread bushes 25 do not need to be driven to rotate, the rotating shaft 24 is centrally arranged in the seal shell 11, the second gear ring 35 and the first gear ring 33 are sleeved outside the same gear 32, the rotating shaft 24 and the thread bush 25 are fixed relative to the second gear ring 35 and the seal shell 11, the rotating shaft 24 and the thread bush 25 are prevented from rotating due to non-human factors, when one of the thread bushes 25 needs to be driven to rotate, the hydraulic telescopic rod 41 drives the second movable seat 39 to move, and the second movable seat 39 drives the rotating shaft 24 to horizontally move, in order to make the pivot 24 move towards another direction of the thread bush 25 that does not need to rotate, the pivot 24 drives two first gear rings 33 through support 34 to move, one of them first gear ring 33 is located the outside of thread bush 25 that does not need to rotate and gear 32 completely, and first gear ring 33 promotes the second gear ring 35 adjacent to it and no longer is located the outside of gear 32, so that pivot 24 and thread bush 25 that does not need to rotate are in the relation that can rotate synchronously, simultaneously, because pivot 24 moves in the horizontal direction, another first gear ring 33 is located the outside of thread bush 25 that does not need to rotate and gear 32 no longer, and another second gear ring 35 is located the outside of thread bush 25 that does not need to rotate and gear 32 completely, thread bush 25 that does not need to rotate and gear 32 are fixed relative to seal shell 11, when the pivot 24 is driven to rotate through carousel 29, pivot 24 can be synchronous with the thread bush 25 that does not need to rotate, can drive single thread bush 25, can lock two thread bushes 25 simultaneously when not need to rotate two thread bushes 25.
Based on the first embodiment, as shown in fig. 2, fig. 3, fig. 4, fig. 5 and fig. 8, the rotating unit includes a connecting shaft 42 fixedly installed on the swinging sleeve 19, one end of the connecting shaft 42 far away from the swinging sleeve 19 is connected with the inner wall of the groove 10 through a bearing, the guiding unit includes a guiding block 43 fixedly installed on the pushing post 16, a second guiding groove 44 matched with the guiding block 43 is formed on the inner wall of the through hole 15, the guiding block 43 is located in the corresponding second guiding groove 44, the stretching unit includes a prism 45 fixedly installed on the top of the sealing round table 14, a fixed post 46 is arranged above the prism 45, the top end of the fixed post 46 is fixedly connected with the top inner wall of the sealing shell 11, a sliding groove 47 is formed on the fixed post 46, the top end of the prism 45 is located in the sliding groove 47, the top end of the prism 45 is connected with the top inner wall of the sliding groove 47 through a second stretching spring 48, the sealing piece includes a second sealing ring 49 arranged in the first air hole 4, the second sealing ring 49 is used for supporting the bottom of the second air pipe 8, a fixed ring 50 is arranged below the second sealing ring 49, the fixed ring 50 is connected with the second sealing ring 50 and the bottom of the second sealing ring 49 through the second sealing ring 50, and the second sealing ring 50 is fixedly connected with the bottom of the second sealing ring 50 through the second sealing ring 50, and the fixed ring 50 is fixedly connected with the top bottom of the second sealing ring 50;
through the design of the connecting shaft 42 and the bearing, the swinging sleeve 19 is rotationally connected in the groove 10, through the design of the guide block 43 and the second guide groove 44, the pushing post 16 moves stably relative to the vertical direction of the through hole 15, when the pushing post 16 moves upwards, so that the pressing plate 18 drives the sealing round table 14 to move downwards, the prism 45 follows the sealing round table 14 to move downwards, the length of the prism 45 in the sliding groove 47 is shortened, the second stretching spring 48 is in a stretching state, finally, the sealing round table 14 completely slides into the second air hole 13, when no external force supports the bottom of the pushing post 16, the pushing post 16 moves downwards due to gravity, meanwhile, the second stretching spring 48 drives the prism 45 and the sealing round table 14 to move upwards, so that the sealing round table 14 moves upwards relative to the second air hole 13, so that a gap is reserved between the sealing round table 14 and the inner wall of the second air hole 13, when high-pressure inert gas is introduced into the third air pipe 12, the high-pressure inert gas can enter the cavity 3 from the gap between the sealing round table 14 and the second air hole 13, when the bottom end of the second air pipe 8 is inserted into the first air hole 4, the second air pipe 8 pushes the second sealing ring 49 to move downwards, the compression spring 52 is in a compressed state, the top of the second sealing ring 49 is tightly attached to the bottom of the second air pipe 8, when the high-pressure inert gas is introduced into the first air hole 4, the high-pressure inert gas is prevented from escaping from the gap between the outer wall of the second air pipe 8 and the inner wall of the first air hole 4, and the second sealing ring 49 slides stably along the vertical direction relative to the fixed ring 50 through the design of the second guide column 51.
The superplastic forming process of the aircraft baffle comprises the superplastic forming die of the aircraft baffle, and comprises the following steps:
step one: according to the position of the forming part 9, the double-layer plate blank 7 is coated with the solder resist, the position corresponding to the non-forming part 9 does not need to be coated with the solder resist, then a worker performs welding edge sealing on the double-layer plate blank 7 through welding equipment, a second air pipe 8 is welded on the double-layer plate blank 7, and an air inlet matched with the second air pipe 8 is formed on the double-layer plate blank 7;
step two: after the double-layer slab 7 is processed, a worker places the double-layer slab 7 on the lower die 1, the second air pipe 8 is inserted into the first air hole 4, finally the upper die 2 is closed, the lower die 1 and the upper die 2 are heated to the superplastic forming diffusion connection temperature of the titanium alloy, after the lower die 1 and the upper die 2 reach the superplastic forming diffusion connection temperature of the titanium alloy, mechanical pressure is applied to the upper die 2, so that the first sealing ring 6, the double-layer slab 7 and the cavity 3 form a closed cavity, meanwhile, high-pressure inert gas is introduced into the third air pipe 12, the high-pressure inert gas enters into the sealing shell 11 and the groove 10, the high-pressure inert gas enters into the cavity 3 through a gap between the sealing circular table 14 and the inner wall of the second air hole 13, and pressure is maintained in a set time period, so that diffusion connection of a non-superplastic forming area of the double-layer slab 7 is realized;
step three: after the diffusion connection is finished, unloading the air pressure in the third air pipe 12, simultaneously introducing high-pressure inert gas into the first air pipe 5, and allowing the high-pressure inert gas to enter the double-layer slab 7 through the first air hole 4 and the second air pipe 8, and maintaining the pressure in a set time period to superplastic forming the forming part 9;
step four: in the superplastic forming process of the forming part 9, the forming part 9 pushes the pushing column 16 to move upwards, the pushing column 16 drives the swinging sleeve 19 to swing through the supporting plate 17, the swinging sleeve 19 drives the pressing plate 18 to rotate, the inclination angle of the pressing plate 18 is changed, the bottom end of the pressing plate 18 drives the sealing round table 14 to move downwards, when the forming part 9 is combined with the inner wall of the cavity 3, the bottom end of the pushing column 16 completely slides into the through hole 15, the horizontal position of the bottom of the pushing column 16 is consistent with the horizontal position of the top inner wall of the cavity 3, meanwhile, the sealing round table 14 completely slides into the second air hole 13, the horizontal position of the bottom of the sealing round table 14 is consistent with the horizontal position of the top inner wall of the cavity 3, the through hole 15 and the second air hole 13 are respectively filled through the pushing column 16 and the sealing round table 14, the bulge on the forming part 9 is avoided, after the forming part 9 is attached, the air pressure in the first air pipe 5 is unloaded, the air pressure is cooled, and superplastic forming and diffusion connection of the aircraft baffle can be realized.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an aircraft baffle superplastic forming die, includes lower mould (1) and last mould (2), its characterized in that: the upper die (2) is provided with a cavity (3), the lower die (1) is provided with a first air hole (4), the lower die (1) is fixedly connected with a first air pipe (5) matched with the first air hole (4), the first air hole (4) is used for placing a second air pipe (8) on a double-layer slab (7), the first air hole (4) is internally provided with a sealing piece matched with the second air pipe (8), the bottom of the upper die (2) is fixedly connected with a first sealing ring (6), the upper die (2) is provided with a plurality of grooves (10), the bottom inner wall of the grooves (10) is communicated with the top inner wall of the cavity (3) through the second air hole (13), the second air hole (13) is internally provided with a sealing round table (14), the top of the upper die (2) is fixedly connected with a plurality of sealing shells (11), the numbers of the sealing shells (11) are identical to the numbers of the grooves (10), the sealing shells (11) are positioned above the corresponding grooves (10), the sealing shells (11) are internally provided with third air pipes (12), the bottom inner walls of the grooves (10) and the bottom inner walls of the grooves (3) are respectively pushed by two adjacent through holes (15) at two sides of the cavity (15), the pushing column (16) is connected with the through hole (15) through a guide unit, the bottom horizontal position of the sealing round table (14) and the bottom horizontal position of the pushing column (16) are consistent with the top inner wall horizontal position of the cavity (3), the sealing round table (14) is connected with the sealing shell (11) through a stretching unit, two pressing plates (18) are arranged above the sealing round table (14), the pressing plates (18) are obliquely arranged, a swinging sleeve (19) is sleeved outside the pressing plates (18), the swinging sleeve (19) is connected with the groove (10) through a rotating unit, the top of the pushing column (16) is fixedly connected with a supporting plate (17), the top end of the supporting plate (17) is contacted with the swinging sleeve (19), and a pressing adjusting assembly matched with the pressing plates (18) is arranged on the sealing shell (11);
the pressing adjustment assembly comprises a first movable seat (20) arranged above a pressing plate (18), two side plates (21) are fixedly connected to the bottom of the first movable seat (20), rectangular holes (22) are formed in the side plates (21), two adjacent side plates (21) are respectively located at two sides of the pressing plate (18), movable columns (23) are arranged in the rectangular holes (22), the movable columns (23) are fixedly connected with the pressing plate (18), two threaded sleeves (25) penetrate through the first movable seat (20), the first movable seat (20) and the threaded sleeves (25) are connected in a threaded mode, a first fixing plate (26) is sleeved outside the threaded sleeves (25), bearings are arranged at the joints of the threaded sleeves (25) and the first fixing plate (26), the top of the first fixing plate (26) is fixedly connected with the inner wall of the top of a sealing shell (11), a limiting plate (27) penetrates through the first fixing plate (26), and two threaded sleeves (25) are matched with each other in the sealing shell (11);
the utility model provides a disconnect-type rotating assembly is including setting up pivot (24) in sealed shell (11), the outside of pivot (24) is all located to adjacent two thread bush (25), pivot (24) and sealed shell (11) are connected through the level adjustment ware, the both ends of pivot (24) are equipped with rotatory cover (28) respectively, rotatory cover (28) run through sealed shell (11), the junction of rotatory cover (28) and sealed shell (11) is equipped with the bearing, the one end that pivot (24) was kept away from to rotatory cover (28) and carousel (29) fixed connection that are located sealed shell (11) one side, fixedly connected with guide bar (31) on the inner wall of rotatory cover (28), set up on pivot (24) with guide bar (31) matched with first guide way (30), and guide bar (31) are located corresponding first guide way (30), thread bush (25) and pivot (24) are connected through the slip engagement spare.
2. The aircraft barrier superplastic forming die of claim 1, wherein: the sliding engagement piece comprises a gear (32) fixedly sleeved outside the threaded sleeve (25), first gear rings (33) are respectively arranged at one ends, far away from each other, of two adjacent threaded sleeves (25), the first gear rings (33) are connected with the rotating shaft (24) through supports (34), second gear rings (35) are respectively arranged at one sides, close to each other, of the two adjacent first gear rings (33), the second gear rings (35) and the first gear rings (33) are respectively sleeved outside the same gear (32), and the second gear rings (35) are connected with the sealing shell (11) through elastic pieces.
3. The aircraft barrier superplastic forming die of claim 2, wherein: the elastic piece comprises at least two supporting parts (36) fixedly mounted on the second gear ring (35), a first guide column (37) penetrates through the supporting parts (36), one end of the first guide column (37) is fixedly connected with the inner wall of the sealing shell (11), a first extension spring (38) is sleeved outside the first guide column (37), and two ends of the first extension spring (38) are fixedly connected with the supporting parts (36) and the inner wall of the sealing shell (11) respectively.
4. The aircraft barrier superplastic forming die of claim 1, wherein: the level adjuster comprises a second movable seat (39) sleeved outside the rotating shaft (24), a bearing is arranged at the joint of the rotating shaft (24) and the second movable seat (39), a second fixing plate (40) is arranged on one side of the second movable seat (39), the second fixing plate (40) is fixedly connected with the inner wall of the sealing shell (11), and the second fixing plate (40) is connected with the second movable seat (39) through a hydraulic telescopic rod (41).
5. The aircraft barrier superplastic forming die of claim 1, wherein: the rotation unit comprises a connecting shaft (42) fixedly mounted on the swinging sleeve (19), one end, far away from the swinging sleeve (19), of the connecting shaft (42) is connected with the inner wall of the groove (10) through a bearing, the guide unit comprises a guide block (43) fixedly mounted on the pushing column (16), a second guide groove (44) matched with the guide block (43) is formed in the inner wall of the through hole (15), and the guide block (43) is located in the corresponding second guide groove (44).
6. The aircraft barrier superplastic forming die of claim 1, wherein: the stretching unit comprises a prism (45) fixedly mounted at the top of a sealing round table (14), a fixing column (46) is arranged above the prism (45), the top end of the fixing column (46) is fixedly connected with the inner wall of the top of the sealing shell (11), a sliding groove (47) is formed in the fixing column (46), the top end of the prism (45) is located in the sliding groove (47), and the top end of the prism (45) is connected with the inner wall of the top of the sliding groove (47) through a second stretching spring (48).
7. The aircraft barrier superplastic forming die of claim 1, wherein: the sealing member is including setting up in second sealing ring (49) in first gas pocket (4), and second sealing ring (49) are used for supporting the bottom of second trachea (8), the below of second sealing ring (49) is equipped with solid fixed ring (50), the inner wall fixed connection of solid fixed ring (50) and first gas pocket (4), the bottom of second sealing ring (49) and the top of solid fixed ring (50) are connected through a plurality of compression springs (52), the bottom fixedly connected with of second sealing ring (49) a plurality of second guide posts (51), and second guide post (51) run through solid fixed ring (50).
8. An aircraft baffle superplastic forming process, which adopts the aircraft baffle superplastic forming die as defined in claim 1, and is characterized in that: the method comprises the following steps:
step one: according to the position of the forming part (9), coating a solder resist on the double-layer plate blank (7), wherein the position of the non-forming part (9) is not required to be coated with the solder resist, then welding and edge sealing are carried out on the double-layer plate blank (7) by a worker through welding equipment, a second air pipe (8) is welded on the double-layer plate blank (7), and an air inlet matched with the second air pipe (8) is formed on the double-layer plate blank (7);
step two: after the double-layer plate blank (7) is processed, a worker places the double-layer plate blank (7) on the lower die (1), a second air pipe (8) is inserted into the first air hole (4), finally, the upper die (2) is closed, the temperature of the lower die (1) and the upper die (2) is raised to the superplastic forming diffusion connection temperature of the titanium alloy, after the lower die (1) and the upper die (2) reach the superplastic forming diffusion connection temperature of the titanium alloy, mechanical pressure is applied to the upper die (2), so that a closed cavity is formed by the first sealing ring (6), the double-layer plate blank (7) and the cavity (3), high-pressure inert gas is introduced into the third air pipe (12), the high-pressure inert gas enters into the sealing shell (11) and the groove (10), and the high-pressure inert gas enters into the cavity (3) through a gap between the sealing round table (14) and the inner wall of the second air hole (13), and is maintained in a set time period, so that diffusion connection of a non-superplastic forming area of the double-layer plate blank (7) is realized;
step three: after the diffusion connection is finished, unloading the air pressure in the third air pipe (12), and simultaneously introducing high-pressure inert gas into the first air pipe (5), wherein the high-pressure inert gas enters the double-layer plate blank (7) through the first air hole (4) and the second air pipe (8), and maintaining the pressure in a set time period to enable the forming part (9) to be subjected to superplastic forming;
step four: in the superplastic forming process of the forming part (9), the forming part (9) pushes the pushing column (16) to move upwards, the pushing column (16) drives the swinging sleeve (19) to swing through the supporting plate (17), the swinging sleeve (19) drives the pressing plate (18) to rotate, the inclination angle of the pressing plate (18) is changed, the bottom end of the pressing plate (18) drives the sealing circular table (14) to move downwards, when the forming part (9) is combined with the inner wall of the cavity (3), the bottom end of the pushing column (16) completely slides into the through hole (15), the horizontal position of the bottom of the pushing column (16) is consistent with the horizontal position of the top inner wall of the cavity (3), meanwhile, the sealing circular table (14) completely slides into the second air hole (13), the horizontal position of the bottom of the sealing circular table (14) is consistent with the horizontal position of the top inner wall of the cavity (3), the through hole (15) and the second air hole (13) are respectively filled through the pushing column (16) and the sealing circular table (14), protruding on the forming part (9) is avoided, after the forming part (9) is adhered to the inner wall of the cavity (3), and the diffusion and the super-plastic forming baffle can be realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310971854.3A CN116689596B (en) | 2023-08-03 | 2023-08-03 | Super-plastic forming die and technology for airplane baffle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310971854.3A CN116689596B (en) | 2023-08-03 | 2023-08-03 | Super-plastic forming die and technology for airplane baffle |
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| CN116689596B true CN116689596B (en) | 2023-10-03 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6430812B1 (en) * | 1997-08-28 | 2002-08-13 | The Boeing Company | Superplastic forming of tubing pull-outs |
| CN113976677A (en) * | 2021-10-18 | 2022-01-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Precise plastic forming device and process method for titanium alloy hollow blade |
| CN115846498A (en) * | 2022-12-21 | 2023-03-28 | 成都市鸿侠科技有限责任公司 | Superplastic forming equipment and process for airplane special-shaped part |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6675621B2 (en) * | 2001-09-10 | 2004-01-13 | General Motors Corporation | Plural sheet superplastic forming equipment and process |
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- 2023-08-03 CN CN202310971854.3A patent/CN116689596B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6430812B1 (en) * | 1997-08-28 | 2002-08-13 | The Boeing Company | Superplastic forming of tubing pull-outs |
| CN113976677A (en) * | 2021-10-18 | 2022-01-28 | 中国航发沈阳黎明航空发动机有限责任公司 | Precise plastic forming device and process method for titanium alloy hollow blade |
| CN115846498A (en) * | 2022-12-21 | 2023-03-28 | 成都市鸿侠科技有限责任公司 | Superplastic forming equipment and process for airplane special-shaped part |
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