CN114247810A - Forming die and forming method for forming annular anisotropic flanging part by using rubber bag - Google Patents
Forming die and forming method for forming annular anisotropic flanging part by using rubber bag Download PDFInfo
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- CN114247810A CN114247810A CN202111548453.4A CN202111548453A CN114247810A CN 114247810 A CN114247810 A CN 114247810A CN 202111548453 A CN202111548453 A CN 202111548453A CN 114247810 A CN114247810 A CN 114247810A
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
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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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
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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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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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
- B21D53/00—Making other particular articles
- B21D53/16—Making other particular articles rings, e.g. barrel hoops
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- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a forming die and a forming method for forming annular anisotropic crimp parts by using rubber bags, and the forming die comprises a tire body, a first forming die and a second forming die, wherein the tire body is provided with a central hole and a step surface; the second forming die comprises an inner cover plate and an inner forming core, the inner cover plate is placed on the part blank formed by the first forming die and used for clamping the part on the tire body; the inner shape core is used for replacing the inner backing plate and is placed at the position of the inner backing plate. By adopting the forming die and the forming method, the purpose of integrally forming the annular anisotropic curved part is achieved by pressing and forming the rubber bag in two processes, and the forming die and the forming method have the advantages of convenience in operation, convenience in use and the like, and are worth of being popularized and used in the sheet metal manufacturing industry.
Description
Technical Field
The invention relates to the technical field of sheet metal part rubber bag forming, in particular to a forming die and a forming method for forming an annular anisotropic crimp part by using a rubber bag.
Background
In the aircraft manufacturing industry, aircraft sheet metal parts occupy the leading position in a wide variety of aircraft structures, and according to statistics, aircraft sheet metal parts account for about more than 50% of aircraft structure parts. In the forming process of the airplane sheet metal part, the forming of the rubber bag is already an important forming method of the aviation sheet metal part. When the annular anisotropic curved edge part is formed in the prior art, either stamping and drawing forming or rubber bag hydraulic forming is adopted, but the two process methods can only form the part by at least more than 2 sets of dies. The stamping and drawing forming is adopted, the used die is the drawing die, and the drawing die has the advantages of high processing speed and good part forming quality due to complex manufacturing process and high manufacturing requirement, but the cost of the drawing die is relatively higher and the economy is poor for the characteristics of small manufacturing batch, complex structure and high part change frequency of airplane sheet metal parts. The forming tool adopts the rubber bag for forming, belongs to the traditional forming mode, and is relatively common in the forming process of the sheet metal part due to the simple structure and low manufacturing requirement of the tool.
In the aircraft sheet metal part manufacturing process, aircraft engine ring sector position part is mostly annular incorgruous crimp part, and annular structure spare as shown in fig. 1 and fig. 2 is annular incorgruous crimp part, and its top has the incorgruous crimp structure, adopts current rubber sack direct forming, leads to the outside crimp of part to appear wrinkling easily, seriously influences the part quality of taking shape, and later stage can only get rid of through the mode of manual school shape and corrugate. By adopting manual shape correction, the workload is large, the forming quality is not easy to control, the surface quality of a formed product is unstable, and after the manual shape correction and trimming, the part has the defects of low adhesion degree of the part, poor surface quality, poor roundness of the annular part and the like. Therefore, aiming at the problems of the forming quality and the surface quality of the parts, whether the parts can be formed by only a mode of a mould structure form and an optimized process method or not can be realized by a set of tool, so that the working efficiency can be improved, the production cost can be reduced, and the high-quality requirement of an airplane can be met.
Disclosure of Invention
The invention aims to solve the technical problems in the background art and provides a forming die which is simple in structure and convenient to operate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a forming die for forming annular anisotropic flanging parts by using rubber bags comprises a tire body, a first forming die and a second forming die, wherein the first forming die and the second forming die are matched with the tire body; the second forming die comprises an inner cover plate and an inner shape core, the shape structure of the inner shape core is the same as that of the inner backing plate, and the inner cover plate is placed on the part blank formed by the first forming die and positioned on the step surface of the tire body and used for clamping the part blank to be formed on the tire body; the inner shape core is used for replacing the inner backing plate, is placed at the position of the inner backing plate after the inner backing plate is removed, and moves downwards under the pressure of the rubber bag to force the inner side of the part blank to be bent and formed.
The invention also discloses a forming method for the annular anisotropic flanging part by adopting the forming die, wherein the forming method is characterized in that the first forming die and the second forming die are respectively matched with the tire body, and the inner-side flanging forming of the part is realized by two integral forming processes; during the first shaping, the inner cushion plate is firstly placed in a central hole on the inner side of the tire body, then the outer cover plate is placed on the upper part of the outer side of the tire body, the gap gasket is arranged in a gap between the outer cover plate and the tire body, and finally the shaping operation can be carried out on the rough parts of the parts under the pressure of the rubber bag; after the first forming is finished, carrying out second forming, and when the second forming is carried out, firstly removing the outer cover plate, the inner base plate and the gap gasket from the tire body, then placing the inner cover plate in the part blank and at the step surface position in the tire body for clamping the part blank on the tire body; then, the inner shape core is placed in a center hole formed after the inner liner plate is removed from the tire body, and is positioned above the upper surface of the center hole under the support of the part blanks; under the pressure of the rubber bag, the inner cover plate is used for correcting the part, and the inner-shaped core moves downwards under the pressure of the rubber bag to force the inner bent edge of the part to be formed downwards and gradually enters the central hole in the tire body through the inner-shaped core, so that the inner bent edge of the part is formed completely.
Further, the forming method of the invention is adopted, wherein in the two integral forming processes, the specific forming process comprises the following steps:
(1) the forming die is placed in a rubber bag forming machine platform, the outer cover plate is placed on the upper portion of the outer side of the tire body, a gap gasket is placed in a gap between the outer cover plate and the tire body, and the gap gasket is used for keeping the gap between the outer cover plate and the tire body under the pressure of the rubber bag, so that the situation that a part is clamped too tightly to influence the flowing performance of the part is avoided; meanwhile, clamping the part wool in a gap between the outer cover plate and the tire body, and finally filling the inner cushion plate in a central hole in the tire body, so that overlarge pressure during forming of the rubber bag is avoided, and the inner side bent edge of the part is prevented from being formed in advance;
(2) starting a rubber bag forming machine, increasing the pressure to 18-23 MPa, maintaining the pressure for 0.5-1.5 minutes, and enabling the part to gradually approach to the tire body under the pressure of the rubber bag, wherein the part still has partial incomplete fit with the tire body in the process of gradually approaching to the tire body;
(3) after the pressure maintaining is finished, gradually reducing the pressure of the rubber bag forming machine, and finishing a first forming procedure when the pressure is reduced to zero;
(4) after the first forming procedure is finished, the outer cover plate, the gap gasket and the inner backing plate are removed from the tire body; then, the inner cover plate is placed on the part after the first procedure is finished and is positioned at the step surface position in the tire body, and the blank of the part is clamped between the inner cover plate and the tire body, so that the effect of correcting the part after the first shaping procedure is finished is achieved, the part can be cut into an inner hole, and the blank is used for the second shaping and unfolding; finally, the inner-shaped core is placed at the position of the inner backing plate after being removed, the inner-shaped core is required to be arranged on the upper surface of the rough material of the formed part, and the inner-shaped core is not completely inserted into the central hole of the tire body under the support of the rough material of the part;
(5) starting a rubber bag forming machine, increasing the pressure to 23-28 MPa, maintaining the pressure for 0.5-1.5 minutes, extruding an inner cover plate under the pressure of the rubber bag, correcting the step position of the part, and forming and fitting the part on the step surface in the tire body; and the inner-shaped core moves downwards under pressure and enters the central hole of the tire body, and the part blank is brought into the central hole of the tire body, so that an inner side bent edge is formed in the part blank, and the second forming procedure is completed.
Further, the forming method of the present invention is adopted, wherein the rubber bladder forming machine is a 7.7 ten thousand ton rubber bladder forming machine, wherein in the first forming process, the pressure is increased to 20MPa, and the pressure is maintained for 1 minute, and in the second forming process, the pressure is increased to 25MPa, and the pressure is maintained for 1 minute.
Compared with the prior art, the forming die and the forming method for forming the annular anisotropic curved part by using the rubber bag have the beneficial effects that: the outer cover plate, the inner base plate and the inner shaping core are matched with the tire body according to corresponding sequence, and the rubber bag is used for step-by-step pressurizing and shaping, so that the purpose of shaping annular anisotropic bent parts is achieved, the phenomenon that wrinkles easily appear on the outer side bent edges of the parts can be effectively eliminated, the shaping quality and the surface quality of the parts are improved, the production efficiency can be greatly improved, and the production cost is reduced.
In conclusion, the forming die and the forming method provided by the invention are adopted, and the rubber bag is pressurized and formed in two processes, so that the purpose of integrally forming the annular anisotropic curved part is achieved, the forming quality can be improved, the production cost can be reduced, the production efficiency is improved, the universality is good, the disassembly and the installation are convenient, the advantages of convenience in operation, convenience in use and the like are achieved, and the forming die and the forming method are worthy of popularization and application in the sheet metal manufacturing industry.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of an annular anisotropic crimping part;
FIG. 2 is a schematic view of the structure in the direction A-A in FIG. 1;
FIG. 3 is a schematic structural view of the present invention;
FIG. 4 is a schematic view of the first pass forming mold of the present invention engaged with a tire carcass;
fig. 5 is a schematic structural view of the second forming mold in the invention when cooperating with the carcass.
Shown in the figure: 1-inner backing plate, 2-parts, 3-tire body, 4-inner cover plate, 5-gap gasket, 6-outer cover plate and 7-inner core.
Detailed Description
To further illustrate the concepts of the present invention, embodiments of the present invention will be further described with reference to the accompanying drawings in which:
because in the manufacturing process of the plane sheet metal part, the part of the ring sector part of the plane engine is mostly an annular anisotropic curved edge part, and aiming at the part, the traditional processing method is stamping and deep drawing and two forming processes of forming with a rubber bag forming machine. And the stamping deep drawing forming mode needs more than 2 sets of tools, and the deep drawing die needed by the deep drawing forming has complex structure, high manufacturing requirement and high manufacturing cost, and is not beneficial to the production mode with small-batch characteristics of airplane sheet metal. And the adoption of the rubber bag forming process mode also needs more than 2 sets of tools, and in the forming process, the outer side of the part is crimped due to the problem of wrinkling, so that the part cannot be directly formed through the rubber bag in the forming process, and is formed manually, and the shape is corrected through the rubber bag, or after the rubber bag is formed, the shape is corrected and trimmed manually. Therefore, the forming process has the advantages of poor surface quality of formed parts and long processing period. Therefore, in order to utilize the mature characteristics of the rubber bag forming process, a set of forming die is designed, and the part can be integrally formed through the die, so that the working efficiency can be improved, the production cost can be reduced, and the high-quality requirement of an airplane can be met.
As shown in fig. 3 to 5, the forming mold for forming the annular anisotropic curved part of the rubber bladder, according to the present invention, comprises a carcass 3, and a first forming mold and a second forming mold which are matched with the carcass 3, wherein the carcass 3 has a central hole and a step surface, the first forming mold comprises an inner liner plate 1, a gap spacer 5 and an outer cover plate 6, the inner liner plate 1 is placed in the central hole at the inner side of the carcass 3, the outer cover plate 6 is placed at the upper portion of the outer side of the carcass 3, a gap is formed between the outer cover plate 6 and the carcass 3, and the gap spacer 5 is disposed between the gaps; the second forming die comprises an inner cover plate 4 and an inner forming core 7, the shape structure of the inner forming core 7 is the same as that of the inner backing plate 1, the inner cover plate 4 is placed on the rough material of the part 2 formed by the first forming die and is positioned on the step surface of the tire body 3, and the rough material of the part 2 to be formed is clamped on the tire body 3; the inner core 7 is used for replacing the inner backing plate 1, is placed at the position of the inner backing plate 1 after the inner backing plate 1 is removed, and moves downwards under the pressure of the rubber bag to force the inner side of the wool of the part 2 to be bent and formed.
The forming method for the annular anisotropic flanging part by adopting the forming die is characterized in that the forming method is that a first forming die and a second forming die are respectively matched with the tire body 3, and the flanging forming of the inner side of the part 2 is realized by two integral forming processes; during the first shaping, the inner backing plate 1 is firstly placed in a central hole on the inner side of the tire body 3, then the outer cover plate 6 is placed on the upper part of the outer side of the tire body 3, the gap gasket 5 is arranged in a gap between the outer cover plate 6 and the tire body 3, and finally the blank of the part 2 can be shaped under the pressure of a rubber bag; after the first forming is finished, carrying out second forming, and when the second forming is carried out, firstly removing the outer cover plate 6, the inner cushion plate 1 and the gap gasket 5 from the tire body 3, then placing the inner cover plate 4 in the rough material of the part 2 and at the step surface position in the tire body 3 for clamping the rough material of the part 2 on the tire body 3; then, the inner core 7 is placed in a center hole left after the inner liner plate 1 is removed from the tire body 3 and is positioned above the upper surface of the center hole under the support of the rough materials of the part 2; under the pressure of the rubber bag, the inner cover plate 4 is used for correcting the part, and the inner shape core 7 moves downwards under the pressure of the rubber bag to force the inner bent edge of the part 2 to be formed downwards, and the inner shape core 7 gradually enters the central hole in the tire body 3 to finish the inner bent edge forming of the part 2; the specific forming process comprises the following steps:
(1) firstly, a forming mould is placed in a platform of a rubber bag forming machine, an outer cover plate 6 is placed on the upper part of the outer side of a tire body 3, a gap gasket 5 is placed in a gap between the outer cover plate 6 and the tire body 3, and the gap gasket 5 is used for keeping the gap between the outer cover plate 6 and the tire body 3 under the pressure of a rubber bag, so that the influence on the flowing performance of a part 2 caused by over-tight clamping of the part 2 is avoided; meanwhile, the wool of the part 2 is clamped in a gap between the outer cover plate 6 and the tire body 3, and finally the inner backing plate 1 is filled in a central hole in the tire body 3, so that overlarge pressure during forming of the rubber bag is avoided, and the inner side bent edge of the part 2 is prevented from being formed in advance;
(2) starting a 7.7 ten thousand tons rubber bag forming machine, increasing the pressure to 20MPa, maintaining the pressure for 1 minute, and enabling the part 2 to gradually approach the tire body 3 under the pressure of the rubber bag, wherein the part 2 still has partial incomplete fit with the tire body 3 in the process of gradually approaching the tire body 3;
(3) after the pressure maintaining is finished, gradually reducing the pressure of the rubber bag forming machine, and finishing a first forming procedure when the pressure is reduced to zero;
(4) after the first forming procedure is finished, the outer cover plate 6, the gap gasket 5 and the inner backing plate 1 are removed from the tire body 3; then, the inner cover plate 4 is placed on the part after the first procedure is finished and is positioned at the step surface position in the tire body 3, and the blank of the part 2 is clamped between the inner cover plate 4 and the tire body 3, so that the effect of correcting the part 2 after the first shaping procedure is finished is achieved, and the part 2 can be cut into an inner hole, namely, the blank is used for the second shaping and unfolding; finally, the inner-shaped core 7 is placed at the position of the inner backing plate 1 after being removed, the inner-shaped core 7 is required to be on the upper surface of the rough material of the forming part 2, and the inner-shaped core 7 is not completely inserted into the central hole of the tire body 3 under the support of the rough material of the part 2;
(5) starting a 7.7-ten-thousand-ton rubber bag forming machine, increasing the pressure to 25MPa, maintaining the pressure for 1 minute, extruding the inner cover plate 4 under the pressure of the rubber bag, correcting the step position of the part 2, and forming and fitting the part on the step surface in the tire body 3; and the inner-shaped core 7 moves downwards under pressure and enters the central hole of the tire body 3, and the rough material of the part 2 is brought into the central hole of the tire body 3, so that an inner-side bent edge is formed in the rough material of the part 2, and the second forming procedure is completed.
By adopting the forming die and the forming method for the rubber bag forming annular incongruous crimping part, firstly, the outer cover plate 6, the inner cover plate 4, the inner cushion plate 1 and the inner shape core 7 are matched with the tire body 3 according to the corresponding sequence, and the rubber bag is pressurized and formed in two processes, so that the aim of integrally forming the annular incongruous crimping part is fulfilled, the phenomenon that the outer side crimping of the part is easy to wrinkle can be effectively eliminated, the forming quality and the surface quality of the part are improved, the production efficiency is greatly improved, and the production cost is reduced.
In conclusion, the forming die and the forming method provided by the invention can improve the forming quality, reduce the production cost and improve the production efficiency through integral forming, have the advantages of good universality, convenience in disassembly and assembly, convenience in operation, convenience in use and the like, and are worthy of popularization and use in the sheet metal manufacturing industry.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art, and any modifications, equivalents, improvements, etc. made by using the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a forming die of rubber bag shaping annular heterodromous crimp part which characterized in that: the forming die comprises a tire body (3), a first forming die and a second forming die, wherein the first forming die and the second forming die are matched with the tire body (3), the tire body (3) is provided with a central hole and a step surface, the first forming die comprises an inner backing plate (1), a gap gasket (5) and an outer cover plate (6), the inner backing plate (1) is placed in the central hole on the inner side of the tire body (3), the outer cover plate (6) is placed on the upper part of the outer side of the tire body (3), a gap is formed between the outer cover plate (6) and the tire body (3), and the gap gasket (5) is arranged between the gaps; the second forming die comprises an inner cover plate (4) and an inner shape core (7), the shape structure of the inner shape core (7) is the same as that of the inner backing plate (1), the inner cover plate (4) is placed on the rough material of the part (2) formed by the first forming die and is positioned on the step surface of the tire body (3) and used for clamping the rough material of the part (2) to be formed on the tire body (3); the inner-shaped core (7) is used for replacing the inner backing plate (1), is placed at the position of the inner backing plate (1) after the inner backing plate (1) is removed, and moves downwards under the pressure of the rubber bag to force the inner side of the wool of the part (2) to be bent and formed.
2. The forming method of the forming die for the annular anisotropic curved part according to claim 1, wherein: the forming method is that a first forming die and a second forming die are respectively matched with the tire body (3), and the inner side bending edge forming of the part (2) is realized through two times of integral forming; during the first shaping, the inner backing plate (1) is placed in a central hole on the inner side of the tire body (3), then the outer cover plate (6) is placed on the upper part of the outer side of the tire body (3), the gap gasket (5) is arranged in a gap between the outer cover plate (6) and the tire body (3), and finally the blank of the part (2) can be shaped under the pressure of the rubber bag; after the first forming is finished, carrying out second forming, and when the second forming is carried out, firstly removing the outer cover plate (6), the inner backing plate (1) and the gap gasket (5) from the tire body (3), then placing the inner cover plate (4) in the rough material of the part (2) and at the step surface position in the tire body (3) for clamping the rough material of the part (2) on the tire body (3); then, the inner-shaped core (7) is placed in a center hole formed after the inner backing plate (1) is removed from the tire body (3), and is positioned above the upper surface of the center hole under the support of the rough material of the part (2); under the pressure of the rubber bag, the inner cover plate (4) is used for correcting the part, and the inner-shaped core (7) moves downwards under the pressure of the rubber bag to force the inner bent edge of the part (2) to be formed downwards, and the inner bent edge of the part (2) is formed completely by gradually entering the central hole in the tire body (3) through the inner-shaped core (7).
3. The forming method according to claim 2, wherein in the two integral forming processes, the specific forming process comprises the following steps:
(1) firstly, a forming mould is placed in a platform of a rubber bag forming machine, an outer cover plate (6) is placed on the upper part of the outer side of a tire body (3), a gap gasket (5) is placed in a gap between the outer cover plate (6) and the tire body (3), and the gap gasket (5) is used for keeping the gap between the outer cover plate (6) and the tire body (3) under the pressure of the rubber bag, so that the situation that a part (2) is clamped too tightly to influence the flowing performance of the part (2) is avoided; meanwhile, the part (2) blank is clamped in a gap between the outer cover plate (6) and the tire body (3), and finally the inner backing plate (1) is filled in a central hole in the tire body (3), so that overlarge pressure is avoided when the rubber bag is formed, and the inner side bent edge of the part (2) is prevented from being formed in advance;
(2) starting a rubber bag forming machine, increasing the pressure to 18-23 MPa, maintaining the pressure for 0.5-1.5 minutes, and enabling the part (2) to gradually approach to the tire body (3) under the pressure of the rubber bag, wherein the part (2) still has part which is not completely attached to the tire body (3) in the process of gradually approaching to the tire body (3);
(3) after the pressure maintaining is finished, gradually reducing the pressure of the rubber bag forming machine, and finishing a first forming procedure when the pressure is reduced to zero;
(4) after the first forming procedure is finished, the outer cover plate (6), the gap gasket (5) and the inner backing plate (1) are removed from the tire body (3); then, the inner cover plate (4) is placed on the part after the first procedure is finished and is positioned at the step surface position in the tire body (3) for clamping the rough material of the part (2) between the inner cover plate (4) and the tire body (3), so that the effect of correcting the part (2) after the first shaping procedure is finished is achieved, the part (2) can be cut out of an inner hole, and the rough material is used for second shaping and unfolding; finally, the inner-shaped core (7) is placed at the position of the removed inner backing plate (1), the inner-shaped core (7) is required to be on the upper surface of the rough material of the forming part (2), and the inner-shaped core (7) does not completely enter the central hole of the tire body (3) under the support of the rough material of the part (2);
(5) starting a rubber bag forming machine, increasing the pressure to 23-28 MPa, maintaining the pressure for 0.5-1.5 minutes, extruding the inner cover plate (4) under the pressure of the rubber bag, correcting the step position of the part (2), and forming and attaching the part to the step surface in the tire body (3); and the inner-shaped core (7) moves downwards under pressure, enters the central hole of the tire body (3), and brings the rough material of the part (2) into the central hole of the tire body (3), so that an inner-side bent edge is formed in the rough material of the part (2), and the second forming procedure is completed.
4. The forming method according to claim 2, wherein: the rubber bag forming machine is a 7.7 ten thousand ton rubber bag forming machine, wherein in the first forming procedure, the pressure is increased to 20MPa, and the pressure is maintained for 1 minute, and in the second forming procedure, the pressure is increased to 25MPa, and the pressure is maintained for 1 minute.
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| CN202111548453.4A CN114247810B (en) | 2021-12-17 | 2021-12-17 | Forming die and forming method for forming annular anisotropic crimping part by rubber bag |
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| CN202111548453.4A CN114247810B (en) | 2021-12-17 | 2021-12-17 | Forming die and forming method for forming annular anisotropic crimping part by rubber bag |
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| CN114247810A true CN114247810A (en) | 2022-03-29 |
| CN114247810B CN114247810B (en) | 2023-09-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115007743A (en) * | 2022-06-01 | 2022-09-06 | 沈阳飞机工业（集团）有限公司 | Forming method of semi-closed steel bracket with equidirectional bent edges |
| CN115318907A (en) * | 2022-09-14 | 2022-11-11 | 陕西飞机工业有限责任公司 | Machining tool and machining method suitable for large-curvature double-bent-edge part |
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| CN112719021A (en) * | 2020-12-11 | 2021-04-30 | 中航贵州飞机有限责任公司 | Flexible side pressing block composite tool for forming sheet metal part rubber bag and using method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115007743A (en) * | 2022-06-01 | 2022-09-06 | 沈阳飞机工业（集团）有限公司 | Forming method of semi-closed steel bracket with equidirectional bent edges |
| CN115318907A (en) * | 2022-09-14 | 2022-11-11 | 陕西飞机工业有限责任公司 | Machining tool and machining method suitable for large-curvature double-bent-edge part |
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