CN113878006B - Sheet covering piece reinforcing rib forming die and forming method - Google Patents
Sheet covering piece reinforcing rib forming die and forming method Download PDFInfo
- Publication number
- CN113878006B CN113878006B CN202111371174.5A CN202111371174A CN113878006B CN 113878006 B CN113878006 B CN 113878006B CN 202111371174 A CN202111371174 A CN 202111371174A CN 113878006 B CN113878006 B CN 113878006B
- Authority
- CN
- China
- Prior art keywords
- die
- forming
- female die
- reinforcing rib
- air cushion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims abstract description 18
- 239000004814 polyurethane Substances 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims 2
- 238000005336 cracking Methods 0.000 abstract description 5
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
Classifications
-
- 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
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
-
- 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
-
- 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
Abstract
The invention relates to a sheet covering piece reinforcing rib forming die and a forming method, comprising a female die and a male die; the female die is positioned above the male die; the structure of the female die adopts the polyurethane embedded in the plane part of the female die body, and the molding part of the female die body adopts a large molding fillet; the convex film is ejected from bottom to top. The invention enlarges the concave die fillet of the reinforcing rib, ensures that enough material flows in during forming, adopts the convex film to reversely eject out the formed reinforcing rib after the part is pressed, adopts the embedded polyurethane material to increase the surface roughness of the contact surface part of the concave die and the part, increases the friction coefficient, increases the friction force, reduces the relative flow of the material, achieves the required forming height, avoids the phenomena of cracking and the like caused by insufficient material participating in deformation in the forming process of the small formed fillet, and reduces the deformation and the warping of the part.
Description
Technical Field
The invention belongs to the technical field of reinforcing rib forming, and particularly relates to a sheet covering piece reinforcing rib forming die and a sheet covering piece reinforcing rib forming method.
Background
The product with the reinforcing ribs relates to covering parts such as an oil tank, an air filter, a tool box, a fender and the like, the product is various in types and large in batches, a steel plate with the thickness of 2mm or an aluminum plate with the thickness of 3mm is selected as a material, the strength, the rigidity and the bending resistance of parts are improved through the structural design of the reinforcing ribs, the universal reinforcing rib forming process is fixed and universal through a die frame, the purpose of forming ribs with different lengths is achieved through changing male dies and female dies with different lengths when the universal reinforcing rib die is designed, the purpose is that a large edge pressing force and a small female die fillet (R=1) are adopted when the reinforcing ribs are formed, the relative flow of materials is prevented, the material is thinned completely, the distortion of the materials around the reinforcing ribs in the forming process is reduced, the molded parts eliminate the distortion, and the height of the reinforcing ribs cannot meet the product requirements. If the height is ensured, shrinkage can be generated in a larger deformation area of the reinforcing rib, particularly an aluminum alloy reinforcing rib piece with poor plasticity, and before the height of the rib does not meet the requirement, the material reaches the deformation limit, so that potential quality hidden danger and even cracking are buried in the product. Therefore, on the premise of ensuring no cracking, the height of the reinforcing ribs produced by the current company can only reach about 5mm, and the reinforcing ribs cannot meet 10+/-2 mm of design requirements.
Disclosure of Invention
The invention provides a sheet covering piece reinforcing rib forming die and a forming method, which aims to solve the technical problems that: the method solves the typical problem of the reinforcing rib forming process of the sheet covering piece for a long time, meets the design size requirement of the product and eliminates the hidden danger of the product quality on the premise of ensuring the product quality.
In order to solve the technical problems, the invention provides a sheet covering piece reinforcing rib forming die, which is characterized in that: comprises a female die 2 and a male die 3; the female die is positioned above the male die; the structure of the female die 2 adopts a plane part of a female die body 21 to be embedded with polyurethane 22, and a molding part of the female die body adopts a large molding fillet; the convex film is ejected from bottom to top.
A method for forming a reinforcing rib of a sheet covering part is characterized by comprising the following steps of: the method comprises the following steps:
1) The male die 3, the air cushion plate 5 and the air cushion rod 6 are fallen below or parallel to the material pressing plate 4;
2) Mounting the part on a die and positioning the part;
3) The upper die holder 1 and the female die 2 move downwards along with the upper sliding block of the press machine to compress the part;
4) The air cushion rod 6 and the air cushion plate 5 are connected with the male die 3 to go upwards, so that the forming of the part reinforcing ribs is completed.
The beneficial effects are that: the invention enlarges the concave die fillet of the reinforcing rib, so that enough material flows in during forming, the convex film is reversely ejected out to form the reinforcing rib after the part is pressed, the surface roughness is increased by embedding polyurethane material into the contact surface part of the concave die and the part, the friction coefficient is increased, the friction force is increased, the relative flow of the material is reduced, the required forming height is achieved, the phenomena of cracking and the like caused by insufficient deformed material in the forming process of the small forming fillet are avoided, and the polyurethane material is embedded into the concave die, so that the polyurethane contact part is pressed and deformed during the forming process, and elasticity is generated, thereby increasing the clamping effect on the part, and reducing the deformation and warping of the part.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the die structure.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the specific embodiments of the present invention will be given.
The invention provides a forming die for a reinforcing rib of a sheet covering part, which comprises an upper die holder 1, a female die 2, a male die 3, a pressing plate 4, an air cushion plate 5, an air cushion rod 6 and a lower die holder 7;
wherein the female die 2 is connected with an upper slide block of the press through the upper die holder 1, the pressing plate 4 is fixed on the lower die holder 7 and is connected with a base of the press, the male die 3 is arranged in a middle through hole between the pressing plate 4 and the lower die holder 7, and the lower end is supported through the air cushion plate 5 and the air cushion rod 6.
The structure of the female die 2 adopts the plane part of the female die 21 to embed polyurethane 22, polyurethane material is 2-3mm higher than the female die, and a gap of 3-5mm is reserved between the polyurethane material and the edge of the female die, which is used for reserving the compression deformation of the polyurethane material in the forming process, and the female die 21 is connected with the polyurethane 22 by bolts 23.
The forming part of the die body adopts a large forming fillet, R is 8-10mm, so that enough material participates in deformation in the forming process, and the phenomena of cracking and the like caused by insufficient material participating in deformation in the forming process of the small forming fillet are avoided; because the polyurethane material is embedded in the female die 2, the polyurethane contact part is pressed and deformed in the forming process to generate elastic force, so that the clamping effect on the part is increased, and the deformation and warping of the part are reduced.
The air cushion rod 6, the air cushion plate 5 and the male die 3 are arranged upwards, so that the forming of part reinforcing ribs is finished, the stability is better, the part is prevented from being tilted upwards, and the forming quality is good.
A method of forming a sheet cover stiffener comprising the steps of:
1) Firstly, the male die 3, the air cushion plate 5 and the air cushion rod 6 fall below or parallel to the material pressing plate 4;
2) Mounting the part on a die and positioning the part;
3) The upper die holder 1 and the female die 2 move downwards along with the upper sliding block of the press machine to compress the part;
4) The air cushion rod 6 and the air cushion plate 5 are connected with the male die 3 to go upwards, so that the forming of the part reinforcing ribs is completed.
By adopting the technical scheme, the 800mm aluminum alloy reinforcing rib with the largest current dimension specification is practically applied, and the larger the dimension specification of the part is, the larger the forming difficulty and the dimension precision control difficulty are, so the aluminum alloy reinforcing rib has strong representativeness.
The forming height of the reinforcing rib reaches 8.5mm, and the requirement of design indexes is met according to the tolerance requirement of 10+/-2 mm of the reinforcing rib.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (2)
1. A sheet covering piece reinforcing rib forming die is characterized in that: comprises a female die and a male die; the female die is positioned above the male die; the structure of the female die adopts the polyurethane embedded in the plane part of the female die body, and the molding part of the female die body adopts a large molding fillet; the male die is ejected from bottom to top; the female die is connected with an upper slide block of the press machine through an upper die holder; the pressing plate is fixed on the lower die holder and is connected with the press base; the male die is arranged in a through hole between the pressing plate and the lower die holder; the lower end of the male die is supported by an air cushion plate and an air cushion rod; the polyurethane material is 2-3mm higher than the female die, and a gap of 3-5mm is reserved between the polyurethane material and the edge of the female die, so that the compression deformation of the polyurethane material in the forming process is reserved; the concave mould body is connected with polyurethane by bolts; the radius of the forming fillet is 8-10mm.
2. A sheet cover bead forming method using the sheet cover bead forming die according to claim 1, characterized in that: the method comprises the following steps:
1) The male die, the air cushion plate and the air cushion rod are fallen below or parallel to the material pressing plate;
2) Mounting the part on a die and positioning the part;
3) The upper die holder and the female die move downwards along with the upper sliding block of the press machine to compress the part;
4) The air cushion rod, the air cushion plate and the male die are connected and ascend to finish the forming of the part reinforcing ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111371174.5A CN113878006B (en) | 2021-11-18 | 2021-11-18 | Sheet covering piece reinforcing rib forming die and forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111371174.5A CN113878006B (en) | 2021-11-18 | 2021-11-18 | Sheet covering piece reinforcing rib forming die and forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113878006A CN113878006A (en) | 2022-01-04 |
| CN113878006B true CN113878006B (en) | 2024-04-02 |
Family
ID=79015408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111371174.5A Active CN113878006B (en) | 2021-11-18 | 2021-11-18 | Sheet covering piece reinforcing rib forming die and forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113878006B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570817A (en) * | 2022-02-22 | 2022-06-03 | 中国航空制造技术研究院 | Thin-wall array bulge structure forming tool and forming method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201519718U (en) * | 2009-10-16 | 2010-07-07 | 内蒙古第一机械制造（集团）有限公司 | Universal ribbing mold for back punching plastic forming |
| CN201625727U (en) * | 2010-04-15 | 2010-11-10 | 重庆理工大学 | Various-shape terrace-die forming mold with controllable draw bead added with radial pushing force |
| CN201832883U (en) * | 2010-10-26 | 2011-05-18 | 湖北神风汽车弹簧有限公司 | Rolling embedded type embossing die |
| CN103418683A (en) * | 2013-07-16 | 2013-12-04 | 成都兴宇精密铸造有限公司 | Stamping die for fuel tank cover plate |
| CN104525726A (en) * | 2014-12-16 | 2015-04-22 | 安徽玉辉电子科技有限公司 | Polyurethane rubber bending die |
| CN111112467A (en) * | 2020-01-03 | 2020-05-08 | 江南造船(集团)有限责任公司 | Non-drift-diameter rib pressing plate forming die and rib pressing curved plate machining method |
-
2021
- 2021-11-18 CN CN202111371174.5A patent/CN113878006B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201519718U (en) * | 2009-10-16 | 2010-07-07 | 内蒙古第一机械制造（集团）有限公司 | Universal ribbing mold for back punching plastic forming |
| CN201625727U (en) * | 2010-04-15 | 2010-11-10 | 重庆理工大学 | Various-shape terrace-die forming mold with controllable draw bead added with radial pushing force |
| CN201832883U (en) * | 2010-10-26 | 2011-05-18 | 湖北神风汽车弹簧有限公司 | Rolling embedded type embossing die |
| CN103418683A (en) * | 2013-07-16 | 2013-12-04 | 成都兴宇精密铸造有限公司 | Stamping die for fuel tank cover plate |
| CN104525726A (en) * | 2014-12-16 | 2015-04-22 | 安徽玉辉电子科技有限公司 | Polyurethane rubber bending die |
| CN111112467A (en) * | 2020-01-03 | 2020-05-08 | 江南造船(集团)有限责任公司 | Non-drift-diameter rib pressing plate forming die and rib pressing curved plate machining method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113878006A (en) | 2022-01-04 |
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