CN220636191U - Flange forging die - Google Patents
Flange forging die Download PDFInfo
- Publication number
- CN220636191U CN220636191U CN202322036058.9U CN202322036058U CN220636191U CN 220636191 U CN220636191 U CN 220636191U CN 202322036058 U CN202322036058 U CN 202322036058U CN 220636191 U CN220636191 U CN 220636191U
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- China
- Prior art keywords
- forging
- primary
- recess
- flange
- punch
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- 238000005242 forging Methods 0.000 title claims abstract description 188
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 36
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- VYQRBKCKQCRYEE-UHFFFAOYSA-N ctk1a7239 Chemical compound C12=CC=CC=C2N2CC=CC3=NC=CC1=C32 VYQRBKCKQCRYEE-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Forging (AREA)
Abstract
The utility model discloses a flange forging die, which comprises an upper die and a lower die, wherein the upper die is provided with an upper bearing surface adjacent to the lower die, the lower die is provided with a lower bearing surface adjacent to the upper die, the upper bearing surface is provided with a primary forging punch and a final forging punch, the lower bearing surface is provided with a primary forging cavity and a final forging cavity, the primary forging punch is matched with the primary forging cavity and the final forging punch is matched with the final forging cavity in a die assembly state, the primary forging punch and the final forging punch are both in a stepped columnar shape, and the stepped columnar shape comprises a small-diameter section and a large-diameter section; the front end of the small-diameter section of the primary forging punch is hemispherical. The front end of the small-diameter section of the primary forging punch is hemispherical, so that the smoothness of the surface of the primary forging punch is improved, the raw materials can flow more smoothly in the primary forging cavity, and the primary forging forming efficiency of the flange forging is improved; and the smooth surface is beneficial to filling raw materials into all parts in the primary forging cavity, so that the quality of the flange forging formed by primary forging is improved, and then the flange forging formed by primary forging is subjected to final forging, so that the quality of a finished product of the flange forging is improved.
Description
Technical Field
The utility model belongs to the technical field of flange forging, and particularly relates to a flange forging die.
Background
The current technology for manufacturing the flange is mainly two kinds of forging and casting, compared with casting the flange. The forged flange has low carbon content, is not easy to rust, has good streamline shape and compact structure, and therefore, the mechanical property of the forged flange is superior to that of the cast flange. The raw material of the forged flange is generally a tube blank, the tube blank is heated and then put into a die, and the tube blank is molded by the strong impact force of the upper die.
The Chinese patent publication No. CN218192354U discloses a flange forging die, which comprises an upper die and a lower die, wherein the upper die is provided with a pre-forging punch and a final-forging punch, the lower die is provided with a pre-forging cavity and a final-forging cavity, the upper die is used for connecting a lifting device to enable the upper die to be matched with the lower die, and the pre-forging punch is matched with the pre-forging cavity and the final-forging punch is matched with the final-forging cavity in a die clamping state.
The forging die can simultaneously perform the operations of primary forging and final forging, so that the forging efficiency is improved, the shape of a final forging punch is consistent with the final shape of the flange forging, and the final shaping of the flange forging is realized; however, the shape of the primary forging punch is close to the final shape of the flange forging, so that the surface shape of the primary forging punch is not smooth enough, and in the forging process, the resistance of the primary forging punch to raw material flow is increased, so that the raw material flow speed is low, and the forming speed is low; and when serious, the situation that the raw materials cannot fill the whole primary forging cavity can also occur, so that the primary forging formed flange forging has defects, and the quality of the flange forging is further affected.
Accordingly, there is a need for improvements in prior art flange forging dies.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a flange forging die which improves the forging efficiency and quality of flange forgings.
In order to achieve the above purpose, the specific technical scheme of the flange forging die provided by the utility model is as follows:
the flange forging die comprises an upper die and a lower die, wherein the upper die is provided with an upper bearing surface adjacent to the lower die, the lower die is provided with a lower bearing surface adjacent to the upper die, the upper bearing surface is provided with a primary forging punch and a final forging punch, the lower bearing surface is provided with a primary forging cavity and a final forging cavity, in a die clamping state, the primary forging punch is matched with the primary forging cavity, the final forging punch is matched with the final forging cavity, and the primary forging punch and the final forging punch are in a stepped columnar shape, and the stepped columnar shape comprises a small-diameter section and a large-diameter section; the front end of the small-diameter section of the primary forging punch is hemispherical.
Preferably, the small-diameter section and the large-diameter section of the primary forging punch are in smooth transition through an arc surface.
Preferably, the front end surface and the outer peripheral surface of the large-diameter section of the primary forging punch are in smooth transition through an arc surface.
Preferably, the lower bearing surface is provided with a first concave part, and the first concave part is circumferentially arranged around the opening of the primary forging cavity.
Preferably, the lower bearing surface is provided with a second concave portion, and the second concave portion is circumferentially arranged around the opening of the final forging die cavity.
Preferably, the depth of the first concave portion is greater than the depth of the second concave portion, and the concave range of the first concave portion is smaller than the concave range of the second concave portion.
Preferably, the bottom of the first concave part and the bottom of the second concave part are provided with positioning grooves with equal quantity and consistent positions.
Preferably, the lower impact surface is further provided with a material blocking ring, the material blocking ring and the primary forging cavity are coaxially arranged, and the first concave portion is located between the material blocking ring and the primary forging cavity.
Preferably, the upper bearing surface is provided with a receiving recess, and the initial forging punch and the final forging punch are both positioned inside the receiving recess.
The flange forging die has the following advantages: the front end of the small-diameter section of the primary forging punch is hemispherical, so that the smoothness of the surface of the primary forging punch is improved, the raw materials can flow more smoothly in the primary forging cavity, and the primary forging forming efficiency of the flange forging is improved; and the smooth surface is beneficial to filling raw materials into all parts in the primary forging cavity, so that the quality of the flange forging formed by primary forging is improved, and then the flange forging formed by primary forging is subjected to final forging, so that the quality of a finished product of the flange forging is improved.
Drawings
FIG. 1 is a schematic diagram of a flange forging die of the present utility model;
FIG. 2 is a schematic diagram of the upper die of the present utility model;
FIG. 3 is a schematic view of the structure of the forging punch of the present utility model;
FIG. 4 is a schematic view of the lower die of the present utility model;
the figure indicates: 1. an upper die; 2. a lower die; 11. an upper striking surface; 12. a receiving recess; 13. final forging a punch; 14. performing primary forging on a punch; 21. a lower striking surface; 22. a primary forging cavity; 23. a final forging cavity; 24. a first concave portion; 25. a second concave portion; 26. a positioning groove; 27. a material blocking ring; 141. a small diameter section; 142. and a large diameter section.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
The terms "top", "bottom" and "bottom" are used with reference to the normal use of the flange forging die for convenience of description and simplicity of description, and are not intended to indicate or imply that the apparatus or elements referred to must have, be constructed and operated in a particular orientation and are not to be construed as limiting the utility model.
As shown in fig. 1 to 4, a flange forging die comprises an upper die 1 and a lower die 2, wherein the upper die 1 is provided with an upper bearing surface 11 adjacent to the lower die 2, the lower die 2 is provided with a lower bearing surface 21 adjacent to the upper die 1, the upper bearing surface 11 is provided with a primary forging punch 14 and a final forging punch 13, the lower bearing surface 21 is provided with a primary forging cavity 22 and a final forging cavity 23, the primary forging punch 14 is matched with the primary forging cavity 22 in a die clamping state, the final forging punch 13 is matched with the final forging cavity 23, the primary forging punch 14 and the final forging punch 13 are in a stepped column shape, and the stepped column shape comprises a small diameter section 141 and a large diameter section 142; the front end of the small diameter section 141 of the primary forging punch 13 is hemispherical.
When the die is used, raw materials firstly enter the inside of the primary forging cavity 22, the upper die 1 and the lower die 2 are driven to be closed by a hydraulic device, and the raw materials are initially molded by the cooperation of the primary forging punch 14 and the primary forging cavity 22; then the upper die 1 and the lower die 2 are opened, the primary formed raw material is sent into the final forging cavity 23, new raw material is put into the primary forging cavity 22, then the dies are closed, the final forging punch 13 is matched with the final forging cavity 23, the primary formed raw material is finally formed, a flange forging is manufactured, and a primary forging formed raw material is generated again in the primary forging cavity 22; the operation of primary forging and final forging can be realized through one die, and the production efficiency of the flange forging is improved.
When the raw materials are subjected to primary forging forming, only the primary forging forming raw materials are required to be provided with the primary shape of the flange forging, so that the front end of the small-diameter section 141 of the primary forging punch 13 is hemispherical, the hemispherical shape can enable the surface of the primary forging punch 14 to be smoother, the resistance of the raw materials flowing in the primary forging cavity 23 is reduced, the primary forging forming efficiency of the raw materials is improved, and the production efficiency of the flange forging is further improved; meanwhile, the surface of the smoother initial forging punch 14 is not deeply recessed, so that raw materials can fill the whole initial forging cavity 22 conveniently, defects on the surface of the raw materials formed by initial forging are reduced, final forging is carried out on the raw materials formed by initial forging, and the quality of the finally formed flange forging is improved.
In a preferred embodiment, as shown in fig. 3, the small diameter section 141 and the large diameter section 142 of the primary forging punch 13 are smoothly transited by an arc surface, and the front end surface and the outer peripheral surface of the large diameter section 142 of the primary forging punch 13 are smoothly transited by an arc surface.
Through the smooth transition of the arc surface, the concave depth of the step part between the small diameter section 141 and the large diameter section 142 of the primary forging punch 14 can be reduced, meanwhile, the front end of the large diameter section 142 can be smoother, the whole primary forging punch 14 is further smoothly transited from the front end to the tail end, the edge angle of the surface of the primary forging punch 14 is reduced, the concave depth of the surface of the primary forging punch 14 is reduced, the raw material is further smaller in resistance when flowing along the primary forging punch 14, the flowing is smoother, the primary forging forming efficiency of the raw material is improved, the periphery of the primary forging punch 14 is filled with the raw material more easily, the defect of the surface of the primary forging forming raw material is reduced, the final forging forming effect of the primary forging forming raw material is improved, and the quality of producing flange forgings is improved.
In a preferred embodiment, as shown in fig. 4, the lower striking surface 21 is provided with a first concave portion 24, and the first concave portion 24 is circumferentially disposed around the opening of the primary forging cavity 22. The arrangement of the first concave part can accommodate redundant raw materials during preliminary forging forming, prevent the raw materials from entering between the upper bearing surface 11 and the lower bearing surface 21, enable the upper die 1 and the lower die 2 to be fully matched, and ensure the quality of flange forgings; and the flange forging can be conveniently grabbed through the flash, so that the probability of damaging the flange forging is reduced.
In a preferred embodiment, as shown in fig. 4, the lower striking surface 21 is further provided with a retaining ring 27, the retaining ring 27 is coaxially disposed with the primary forging cavity, and the first recess 24 is located between the retaining ring 27 and the primary forging cavity. The material blocking ring 27 can prevent raw materials from entering between the upper bearing surface 11 and the lower bearing surface 21, so that the upper die 1 and the lower die 2 can be fully matched; and the material blocking ring 27 can keep the pressure of the raw materials, so that the raw materials fully fill the primary forging cavity, and the quality of the flange forging is improved.
In a preferred embodiment, as shown in fig. 4, the lower striking surface 21 is provided with a second concave portion 25, and the second concave portion 25 is circumferentially disposed around the opening of the finish forging die cavity 23. The second recess 25 can accommodate excessive raw material during finish forging and prevent raw material from entering between the upper and lower striking surfaces 11 and 21, so that the upper and lower dies 1 and 2 can be sufficiently clamped.
In a preferred embodiment, as shown in fig. 4, the depth of the first recess 24 is greater than the depth of the second recess 25, and the recess range of the first recess 24 is smaller than the recess range of the second recess 25. The second concave portion 25 can thin the flash formed in the first concave portion 24, so that the subsequent cutting of the flash is facilitated.
In a preferred embodiment, as shown in fig. 4, the bottom of the first recess 24 and the bottom of the second recess 25 are provided with equal numbers of positioning grooves 26. During the initial forging, the positioning groove 26 can form a positioning bulge on the initial forging raw material, and during the final forging, the positioning bulge is matched with the positioning groove 26 at the final forging cavity 23, so that the positioning of the initial forging raw material is realized, and the convenience of operation is improved.
In a preferred embodiment, as shown in fig. 2, the upper striking face 11 is provided with a receiving recess 12, and the initial forging punch and the final forging punch 13 are both located inside the receiving recess 12. The accommodating recess 12 can be used for accommodating redundant raw materials, so that the upper die 1 and the lower die 2 can be fully matched, and the quality of flange forgings can be ensured.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides a flange forges mould, includes mould (1) and lower mould (2), go up mould (1) have with last face (11) of hitting of lower mould (2) adjacent, lower mould (2) have with last mould (1) adjacent lower face (21), go up face (11) and be provided with just forge drift (14) and final forge drift (13), lower face (21) are provided with just forge die cavity (22) and final forge die cavity (23), and in the compound mode, just forge drift (13) with final forge die cavity (23) cooperation, its characterized in that:
the initial forging punch (14) and the final forging punch (13) are both in a stepped columnar shape, and the stepped columnar shape comprises a small-diameter section (141) and a large-diameter section (142); the front end of the small-diameter section (141) of the primary forging punch (14) is hemispherical.
2. Flange forging die according to claim 1, characterized in that the small diameter section (141) and the large diameter section (142) of the primary forging punch (14) are smoothly transited by an arc surface.
3. The flange forging die according to claim 2, wherein a front end surface and an outer peripheral surface of the large diameter section (142) of the primary forging punch (14) are smoothly transited by an arc surface.
4. A flange forging die according to any one of claims 1 to 3, wherein the lower bearing surface (21) is provided with a first recess (24), and the first recess (24) is circumferentially provided around the opening of the primary forging cavity (22).
5. Flange forging die according to claim 4, characterized in that the lower bearing surface (21) is provided with a second recess (25), the second recess (25) being circumferentially arranged around the opening of the finish forging die cavity (23).
6. Flange forging die according to claim 5, wherein the depth of the first recess (24) is greater than the depth of the second recess (25), the recess extent of the first recess (24) being smaller than the recess extent of the second recess (25).
7. Flange forging die according to claim 6, characterized in that the bottom of the first recess (24) and the bottom of the second recess (25) are each provided with positioning grooves (26) of equal number and identical position.
8. Flange forging die according to claim 7, characterized in that the lower bearing surface (21) is further provided with a retaining ring (27), the retaining ring (27) being arranged coaxially with the primary forging cavity, the first recess (24) being located between the retaining ring (27) and the primary forging cavity.
9. Flange forging die according to claim 8, characterized in that the upper bearing surface (11) is provided with a receiving recess (12), the initial and final forging punches (13) being located inside the receiving recess (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322036058.9U CN220636191U (en) | 2023-07-31 | 2023-07-31 | Flange forging die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322036058.9U CN220636191U (en) | 2023-07-31 | 2023-07-31 | Flange forging die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220636191U true CN220636191U (en) | 2024-03-22 |
Family
ID=90269992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322036058.9U Active CN220636191U (en) | 2023-07-31 | 2023-07-31 | Flange forging die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220636191U (en) |
-
2023
- 2023-07-31 CN CN202322036058.9U patent/CN220636191U/en active Active
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