CN120815899B - A forging apparatus and forging method for large-diameter heads - Google Patents
A forging apparatus and forging method for large-diameter headsInfo
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- CN120815899B CN120815899B CN202511166656.5A CN202511166656A CN120815899B CN 120815899 B CN120815899 B CN 120815899B CN 202511166656 A CN202511166656 A CN 202511166656A CN 120815899 B CN120815899 B CN 120815899B
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Abstract
The invention discloses a forging forming device and a forging method for a large-diameter end socket, which relate to the technical field of large-diameter end sockets and comprise pressure equipment, a base, a female die assembly, a first guide assembly and a second guide assembly, wherein the pressure equipment is used for driving a male die and a limiting ring to independently move along the vertical direction, the base is arranged below the pressure equipment, a material sheet is placed on the female die assembly to pass through the female die assembly, the first guide assembly and the second guide assembly play a role in guiding in the material sheet placing process, so that the material sheet is guided to the first guide assembly, and the first guide assembly centers the material sheet after receiving the material sheet, so that the center of a falling point of the material sheet coincides with the center of the female die assembly. According to the invention, through the guiding function of the second guiding component and the centering function of the first guiding component, the material sheet can accurately fall at the center of the female die component, the automatic centering is realized, the manual intervention is not needed, the material sheet placement speed is high, and the production efficiency is accelerated while the safety is improved.
Description
Technical Field
The invention relates to the technical field of large-diameter end sockets, in particular to a large-diameter end socket forging forming device and a forging method.
Background
The large-diameter hemispherical sealing head has the advantages of uniform curvature radius, most uniform stress, minimum wall thickness required when bearing the same pressure, remarkable material saving, and is commonly used for high-pressure or oversized-diameter containers in industrial production, and the large-diameter sealing head is used as a key component of large-scale equipment such as a pressure container, chemical equipment and the like, and the forging quality of the large-diameter hemispherical sealing head is directly related to the integral safety and the operation stability of the equipment.
At present, in the production process, at the tablet placing stage, the tablet is placed into the mould after being lifted by workshop crane, and forging and pressing are carried out through the hydraulic press, and this in-process is because lack high-efficient accurate direction and centering structure, needs artifical handheld knuckle to assist it to fix a position at tablet decline in-process, and the tablet easily appears the condition of center skew die subassembly center, brings negative effect to shaping quality.
Disclosure of Invention
The invention aims to provide a forging forming device and a forging method for a large-diameter end socket, which are used for solving the defects in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme that the large-diameter end socket forging forming device comprises:
The pressure equipment is used for driving the male die and the limit ring to independently displace along the vertical direction;
a base disposed below the pressure device;
The female die component is provided with a material sheet;
The first guide component and the second guide component play a role in guiding in the placing process of the material sheets, so that the material sheets are guided to the first guide component, and the first guide component centers the material sheets after receiving the material sheets so that the center of the falling point of the first guide component coincides with the center of the female die component.
Preferably, the die assembly includes:
The lower die holder is fixedly arranged on the base through the supporting legs;
a lower base plate fixed on the lower die holder;
The rotating plate is rotationally connected in the lower die holder;
And the female die is arranged on the lower die seat and is fixedly connected with the lower base plate.
Preferably, the second guiding component comprises a vertical frame and a plurality of guide columns, wherein the vertical frames are arranged on the rotating plate, the guide columns are rotationally connected to the vertical frames, and arc chamfers are arranged at one ends, close to the limit rings, of the guide columns.
Preferably, a material leakage hole communicated with the inner wall and the outer wall of the lower die holder is formed in the lower die holder, and one end lower part of the material leakage hole is flush with the upper part of the rotating plate.
Preferably, the first guide assembly includes:
The device comprises a sliding frame, a centering block, a driving disc and a second elastic piece, wherein the sliding frame is connected to a rotating plate in a sliding way, the second elastic piece applies thrust to the sliding frame towards the center of the rotating plate, the centering block is connected to the sliding frame in a rotating way, and the driving disc is fixedly arranged at two ends of the centering block;
The floating position avoiding part comprises a sliding groove, an inserting column, a connecting column, a tension piece and an annular groove, wherein the annular groove is formed in a lower base plate, the sliding groove is formed in a driving disc, the inserting column is slidably inserted on a sliding frame, the connecting column is rotationally connected to the upper portion of the inserting column, one end of the connecting column is inserted into the sliding groove, and the tension piece applies downward tension to the inserting column.
Preferably, one end of the centering block is matched with the tablet, an annular groove is formed in the outer portion of the limiting ring, and the guide post moves along the annular groove in the downward moving process of the limiting ring.
Preferably, the pressure equipment is provided with a first hydraulic cylinder for driving the male die to displace, and the pressure equipment is provided with a second hydraulic cylinder for driving the limit ring to displace.
Preferably, the base is laterally moved to drive the die assembly away from under the pressure device.
Preferably, the device further comprises at least two groups of lifting assemblies which are respectively arranged below the pressure equipment and on the lateral movement path of the base and are used for supporting the formed material sheets.
A forging method of a large-diameter end socket comprises the following steps:
S1, a base drives a female die assembly to laterally move, then a tablet is hoisted to the vicinity of the upper part of the female die assembly, in the tablet placing process, the tablet is guided to a first guide assembly by utilizing the guiding function of a second guide assembly in a sliding manner along a guide pillar, after the tablet is received by the first guide assembly, a centering block is pressed and overturned, so that the tablet is positioned and clamped, the center of a tablet falling point is overlapped with the center of the female die assembly, and a driving disc drives a plunger to move upwards;
S2, starting pressure equipment, driving a limit ring to move downwards along the vertical direction through a second hydraulic cylinder, in the process of downwards moving the limit ring, driving a guide pillar to move along an annular groove outside the limit ring until the limit ring compresses and fixes the edge of a material sheet, then driving a male die to move downwards along the vertical direction through a first hydraulic cylinder, gradually approaching and contacting the material sheet, performing first forging and forming on the material sheet, and driving the limit ring to move upwards through the second hydraulic cylinder, and driving the male die to continue downwards moving to perform second forging and forming on the material sheet through the first hydraulic cylinder;
S3, after the material sheet is forged and formed, the first hydraulic cylinder drives the male die to move upwards to reset, the base is controlled to move laterally, the female die component is driven to leave the lower part of the pressure equipment, the lifting component is started, the lifting component ascends from the lower part of the base, the material sheet after top forming is supported, and the forming seal head is taken down from the female die component.
According to the large-diameter end socket forging forming device and the forging method, the material sheets can accurately fall on the center of the female die assembly through the guiding function of the second guiding assembly and the centering function of the first guiding assembly, so that the material sheets can be accurately centered, the allowance is not required to be increased at the material preparation time, the cost is reduced, the end socket forming precision is remarkably improved, automatic centering is not required, manual intervention is not required, the material sheet placing speed is high, and the production efficiency is accelerated while the safety is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure of a large-diameter head forging forming device and forging method according to the present invention;
FIG. 2 is a schematic view of a large diameter end cap forging apparatus and a forging method according to the present invention with a web not placed;
FIG. 3 is an enlarged schematic view of the large diameter end cap forging apparatus and forging method of the present invention at A in FIG. 2;
FIG. 4 is a schematic view of a large diameter end cap forging apparatus and a method for forging a material sheet after placement;
FIG. 5 is an enlarged schematic view of the large diameter end cap forging apparatus and forging method of the present invention at B in FIG. 4;
FIG. 6 is a schematic diagram of a structure of a large-diameter end socket forging forming device and a forging method after a retainer ring presses a tablet down;
FIG. 7 is an enlarged schematic view of the large diameter end cap forging apparatus and forging method of the present invention at C in FIG. 6;
FIG. 8 is a schematic diagram of a large diameter end cap forging apparatus and method according to the present invention with a punch depressed to a first forging press;
FIG. 9 is an enlarged schematic view of the large diameter end cap forging apparatus and method of the present invention at D in FIG. 8;
FIG. 10 is a schematic diagram of a large diameter end cap forging apparatus and method according to the present invention with a punch pressed down to a second forging press;
FIG. 11 is a schematic view of a floating spacer structure of a large diameter head forging apparatus and forging method according to the present invention.
The reference numerals comprise 1, a pressure device, 11, a first hydraulic cylinder, 12, a second hydraulic cylinder, 2, a male die, 3, a limit ring, 31, a ring groove, 4, a base, 5, a female die assembly, 51, a lower die holder, 52, a lower base plate, 53, a rotating plate, 54, a female die, 511, a material leakage hole, 521, a ring groove, 6, a first guide assembly, 61, a sliding frame, 62, a centering block, 63, a driving disc, 64, a plunger, 65, a tension member, 66, a second elastic member, 631, a sliding groove, 641, a connecting column, 7, a second guide assembly, 71, a stand, 72, a guide pillar, 8, a material sheet, 9 and a lifting assembly.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 11, a forging forming device for a large-diameter end socket according to an embodiment of the present invention includes:
The pressure equipment 1 is used for driving the male die 1 and the limit ring 3 to independently displace along the vertical direction;
a base 4 disposed below the pressure apparatus 1;
the female die assembly 5, the tablet 8 is placed on the female die assembly 5;
the first guide component 6 and the second guide component 7, in the placing process of the material sheet 8, the second guide component 7 plays a role in guiding in the placing process of the material sheet 8, so that the material sheet 8 is guided to the first guide component 6, and the first guide component 6 centers the material sheet 8 after receiving the material sheet 8, so that the center of a falling point of the material sheet is coincident with the center of the die component 5.
The tablet 8 is hoisted through driving, and tablet 8 is first preliminary location by second direction subassembly 7, makes its limit in the locating range to make tablet 8 can be smooth whereabouts to first direction subassembly 6 department, immediately, through the centering of first direction subassembly 6, tablet 8 can be whereabouts to die subassembly 5 on, like this, the degree of difficulty is placed to tablet 8 greatly reduced in hoisting process, need not artifical auxiliary positioning, very big promotion tablet 8 safety in-process of placing.
In an embodiment of the present invention, the die assembly 5 includes:
The lower die holder 51 is fixedly arranged on the base 4 through supporting legs;
A lower pad 52 fixed to the lower die holder 51;
A rotating plate 53 rotatably connected to the inside of the lower die holder 51;
and the female die 54 is mounted on the lower die holder 51 and fixedly connected with the lower base plate 52.
Referring to fig. 2 and 3, the punch 2 and the stop collar 3 are driven to independently displace by the pressure device 1, and the forging operation is realized by matching with the die assembly 5 on the base 4, wherein the lower die holder 51 of the die assembly 5 provides rigid support, the lower pad 52 plays a role in supporting and buffering, the die 54 is a molding cavity, the precise centering of the material sheet 8 is finished by the cooperation of the first guide assembly 6 and the second guide assembly 7, and the product quality and the safety in the production process are improved by centering, limiting and fixing the material sheet 8.
In the embodiment of the present invention, referring to fig. 2-4, the second guiding assembly 7 includes a stand 71 and a guiding post 72, a plurality of the stand 71 are mounted on the rotating plate 53, the guiding post 72 is rotatably connected to the stand 71, one end of the guiding post 72 near the limiting ring 3 is provided with an arc chamfer, the stand 71 is dispersed with the female die 54 as a center, and during the downward movement of the material sheet 8, the shaking of the material sheet is limited by the stand 71 and the guiding post 72, so as to ensure that the material sheet falls on the first guiding assembly 6 smoothly.
The second guide component 7 plays a role in guiding through the vertical frame 71 and the guide post 72, the vertical frame 71 serves as a supporting base in the placing process of the material sheet 8, the concave die 54 serves as a center to be mounted on the rotating plate 53 in a scattered mode, a guide frame surrounding the concave die 54 is formed, a state that the space between the vertical frame 71 and the first guide component 6 is gradually reduced is formed in a distributed mode, the horizontal offset range of the material sheet 8 is primarily limited through the vertical frame 71 and the guide post 72, the guide post 72 is rotationally connected to the vertical frame 71 and can flexibly rotate around the axis, when the material sheet 8 moves downwards from above, the material sheet 8 is firstly contacted with the guide post 72, sliding friction between the material sheet 8 and the guide post 72 is converted into rolling friction, the resistance of the downward movement of the material sheet 8 is greatly reduced, the circular arc design that the material sheet 8 is scratched or blocked downwards due to overlarge friction is avoided, the guide angle of the guide post 72 near one end of the limit ring 3 can effectively eliminate the obstruction of the material sheet 8, the material sheet 8 bounces or offsets due to rigid collision, the downward movement track of the material sheet 8 is further stabilized, the material sheet 8 is finally blocked downwards, the material sheet 8 is prevented from moving downwards through the guide post 72 is prevented from moving downwards through the guide frame 7, and the joint motion of the guide component is reduced in the stable rotation characteristic of the guide frame 6, and the first guide component is reduced in the stable rotation range, and the stable motion of the material sheet 8 is guaranteed, and the material sheet 8 enters the second guide component is smoothly, and the stable through the guide component is subjected to the stable motion, and the stable guide component, and the stable motion is subjected to the stable motion, and has a stable guide component.
In still another embodiment of the present invention, referring to fig. 2, a material leakage hole 511 is formed in the lower die holder 51 and is communicated with the inner wall and the outer wall of the lower die holder, wherein a lower portion of one end of the material leakage hole 511 is flush with an upper portion of the rotating plate 53.
In the large-diameter seal head pressing process, when the high-temperature material sheet 8 is in contact with air for cooling, oxide skin is generated on the surface, along with continuous forging, the oxide skin gradually falls off under the extrusion of the male die 2, the deformation of the material sheet 8 and the rotation of the rotating plate 53, the fallen oxide skin can firstly fall on the upper surface of the rotating plate 53, and as one end lower part of the material leakage hole 511 is flush with the upper part of the rotating plate 53, the oxide skin can smoothly slide into the inlet of the material leakage hole 511, meanwhile, the material leakage hole 511 is communicated with the inner wall and the outer wall of the lower die holder 51 to form a through material discharging channel, the oxide skin entering the material leakage hole 511 can be rapidly discharged to the outside of the lower die holder 51 along the channel under the pushing of gravity, the accumulation of the oxide skin in the female die assembly 5 is avoided, the influence of the oxide skin on the forging precision on the surface of the female die 54 cavity or the rotating plate 53 is prevented, the abrasion of the die by the oxide skin is avoided, the blocking of the next material leakage hole 511 is avoided, the long-term stable operation of the female die assembly 5 is ensured, and the molding quality of the seal head is indirectly improved.
In an embodiment of the present invention, the first guide assembly 6 includes:
The sliding frame 61, the centering block 62, the driving disc 63 and the second elastic piece 66, wherein the sliding frame 61 is connected to the rotating plate 53 in a sliding way, the second elastic piece 66 applies a pushing force to the sliding frame 61 towards the center of the rotating plate 53, the centering block 62 is connected to the sliding frame 61 in a rotating way, and the driving disc 63 is fixedly arranged at two ends of the centering block 62;
The floating position avoiding part comprises a sliding groove 631, an inserting column 64, a connecting column 641, a tension piece 65 and an annular groove 521, wherein the annular groove 521 is formed in the lower base plate 52, the sliding groove 631 is formed in the driving plate 63, the inserting column 64 is slidably inserted on the sliding frame 61, the connecting column 641 is rotatably connected to the upper portion of the inserting column 64, one end of the connecting column 641 is inserted into the sliding groove 631, and the tension piece 65 applies downward tension to the inserting column 64.
Firstly, one end of the centering block 62, which is close to the center of the female die 54, is tilted and is in a shape of a large upper part and a small lower part, and at the moment, the end face of the centering block forms an inclined plane (as shown in fig. 3), the structure provides a guiding inlet for the falling of the material sheet 8, so that the material sheet 8 can precisely contact the centering block 62 and then move downwards, and at the moment, the lower end of the inserting post 64 is inserted into the annular groove 521 of the lower base plate 52, and at the moment, the sliding frame 61 is limited and cannot move radially along the rotating plate 53;
When the material sheet 8 falls to the first guide assembly 6 under the guidance of the second guide assembly 7, the material sheet 8 is firstly contacted with the inclined surface of the centering block 62, the centering block 62 is extruded under the action of self gravity to force the centering block 62 to rotate (turn over) around the sliding frame 61, so that one end, close to the center, of the centering block 62 is gradually flattened in the turning over process, radial centripetal extrusion force is generated on the edge of the material sheet 8, the material sheet 8 is pushed to a position coincident with the center of the female die 54 by utilizing the synchronous action of a plurality of groups of centering blocks 62, centering is completed, synchronous centering is realized, the centering block 62 turns over to drive the driving discs 63 at two ends to synchronously rotate, so that the sliding grooves 631 on the driving discs 63 rotate along with the driving discs, the sliding grooves 631 push the inserting columns 64 to slide upwards against the pulling force of the pulling pieces 65 through the cooperation of the connecting columns 641, and finally the lower ends of the inserting columns 64 are separated from the annular grooves 521, and the limit of the sliding frame 61 is released at the moment, and the driving discs 53 can freely move radially along the rotating plates 53;
Subsequently, the first forging and forming is performed, the limit ring 3 moves downwards to compress, the material sheet 8 moves downwards to form a state shown in fig. 9, at this time, the second forging and forming is performed, the limit ring 3 moves upwards, the male die 2 continues to move downwards until the state shown in fig. 9 is formed, the material sheet 8 gradually forms under the action of the male die 2 and the female die 54 when the second forging and forming is performed, the outer circle edge of the material sheet 8 can tilt upwards, because the sliding frame 61 is unlocked, when the edge of the material sheet 8 tilts and contacts the centering block 62, the centering block 62 is pushed to drive the sliding frame 61 to move outwards along the radial direction against the elastic force of the second elastic piece 66, so that the design of synchronously outwards yielding along with the deformation of the material sheet 8 is realized, the obstruction of the edge tilting of the material sheet 8 by the first guiding component 6 is avoided, the edge of the material sheet 8 is prevented from generating irregular arc angles or folds due to extrusion, the flatness and integrity of the formed blank edge are ensured, accurate references are provided for subsequent groove cutting and other procedures, thus, the first guiding component 6 realizes initial inclined plane guiding, flip extrusion centering is realized, finally, self-centering quality is realized, the self-centering quality is improved, and the diameter is improved, and the quality of the forging and the end socket is greatly improved.
In the embodiment of the present invention, one end of the centering block 62 is adapted to the web 8, the outside of the stop collar 3 is provided with the annular groove 31, and during the downward movement of the stop collar 3, the guide post 72 moves along the annular groove 31 to realize the rotation of the rotating plate 53.
One end of the centering block 62 is adapted to the outer circumferential surface of the web 8, and this adaptation makes the centering block 62 form a surface contact when contacting the web 8, so that the centering position of the web 8 is maintained by a uniform extrusion force, and the annular groove 31 outside the stop collar 3 is not a pure vertical channel, but is designed with a specific spiral track, when the stop collar 3 moves vertically downward under the drive of the second hydraulic cylinder 12, the guide post 72 is embedded in the annular groove 31 and slides along the channel, and the circumferential track of the annular groove 31 generates a lateral thrust to the guide post 72, so that the guide post 72 moves synchronously with the stop collar 3 and simultaneously generates a circumferential rotation around the center of the die 54. Since the guide post 72 is fixedly connected to the rotating plate 53 through the stand 71, the circumferential rotation is transmitted to the rotating plate 53 through the stand 71, and the centering blocks 62 are synchronously rotated, so that the outer surface of the material sheet 8 can be scraped by utilizing the rotation of the centering blocks 62 to remove an oxide layer, and when the secondary forging and pressing forming is started, the centering blocks 62 can be rotated and reset due to the first upward movement of the limiting rings 3, and the secondary scraping can be realized, so that the cleaning effect is further improved.
In a further embodiment of the present invention, the pressure device 1 is provided with a first hydraulic cylinder 11 for driving the male die 2 to displace, and the pressure device 1 is provided with a second hydraulic cylinder 12 for driving the limit ring 3 to displace.
The base 4 can be laterally moved to drive the die assembly 5 to leave the lower part of the pressure device 1.
At least two sets of lifting assemblies 9 are also included, respectively arranged below the press 1 and on the side-shifting path of the base 4, for supporting the formed material sheet 8.
In the embodiment, the first hydraulic cylinder 11 drives the male die 2 to complete forging and forming actions of the material sheet 8, the second hydraulic cylinder 12 drives the limit ring 3 to achieve pre-fixing of the edge of the material sheet 8 and indirect driving of the rotating plate 53, action time sequences and force of the two can be independently adjusted, and forging precision is guaranteed while interference is avoided;
The design that the base 4 can be laterally moved further improves the operation flexibility of the device, after forging is completed, the base 4 drives the die assembly 5 to integrally move out of the lower part of the pressure equipment 1, so that the formed material sheet 8 is separated from the forging area, thereby being convenient for operators to maintain the die assembly 5, providing sufficient space for the subsequent part taking process and reducing the idle time of the equipment;
The arrangement of at least two groups of lifting components 9 forms double-station lifting, the lifting components 9 positioned below the pressure equipment 1 can initially support the formed material sheet 8 to move upwards after forging and pressing are completed and the male die 2 and the limit ring 3 are reset, and the lifting components positioned on the side moving path of the base 4 further stabilize the lifting material sheet 8 after the female die component 5 moves to place along with the base 4, so that the safety pick-up is facilitated;
and after die casting is completed, the die casting can be directly lifted by the lifting assembly 9 positioned below the pressure equipment 1, and then transferred by forklift equipment.
A forging method of a large-diameter end socket comprises the following steps:
S1, a base 4 drives a die assembly 5 to laterally move, then a material sheet 8 is hoisted to the vicinity of the upper part of the die assembly 5, in the placing process of the material sheet 8, the material sheet 8 is guided to a first guide assembly 6 along a guide post 72 in a sliding manner by utilizing the guiding effect of a second guide assembly 7, after the material sheet 8 is received by the first guide assembly 6, a centering block 62 is pressed and overturned, so that the positioning and clamping of the material sheet 8 are realized, the center of a falling point of the material sheet 8 coincides with the center of the die assembly 5, and a driving disc 63 drives an inserting column 64 to move upwards;
S2, starting the pressure equipment 1, driving the limit ring 3 to move downwards in the vertical direction through the second hydraulic cylinder 12, in the process of moving the limit ring 3 downwards, driving the guide post 72 to move along the annular groove 31 outside the limit ring 3 until the limit ring 3 compresses and fixes the edge of the material sheet 8, then driving the male die 2 to move downwards in the vertical direction through the first hydraulic cylinder 11, gradually enabling the male die 2 to approach and contact the material sheet 8, performing first forging and pressing molding on the material sheet 8, and driving the limit ring 3 to move upwards through the second hydraulic cylinder 12, and driving the male die 2 to move downwards continuously through the first hydraulic cylinder 11, and performing second forging and pressing molding on the material sheet;
S3, after the material sheet 8 is forged and formed, the first hydraulic cylinder 11 drives the male die 2 to move upwards to reset, the base 4 is controlled to move laterally, the female die assembly 5 is driven to leave the lower part of the pressure equipment 1, the lifting assembly 9 is started, the lifting assembly 9 ascends from the lower part of the base 4, the material sheet 8 after the top forming is supported, and the forming end socket is taken down from the female die assembly 5.
In the method, through the cooperative mechanism of preliminary guiding of the second guiding component 7 and overturning and centering of the first guiding component 6, the automatic alignment of the centers of the material sheet 8 and the female die component 5 is realized by utilizing the rolling guiding of the guide post 72 and the self-adaptive overturning and extrusion of the centering block 62, and the contour adaptation design of the centering block 62 and the material sheet 8 is matched, so that the manual intervention error is greatly reduced, and the positioning efficiency is improved;
The technological innovation design is characterized in that the primary molding is realized under the constraint of the limit ring 3 through the first forging and pressing and fixing and the twice forging and pressing process, so that the sliding of a material sheet is avoided, the material sheet 8 is free to extend after the constraint of the limit ring 3 is released through the second forging and pressing, the curved surface of the end socket is molded more uniformly through step-by-step deformation stress release, the technological innovation design is particularly suitable for the thick-wall molding requirement of a large-diameter end socket, and the first forging and pressing process is constrained and fixed at the release, so that the material is forced to be preferentially expanded along the axial direction of a cavity of the female die 54 under the fixation of the limit ring 3, the edge is prevented from being turned outwards due to unconstrained, and after the limit is released through the second forging and pressing, the material is turned to be radially turned over under the continuous pressure of the male die 2, so that the curved surface radian is gradually extended from inside to outside. This staged plastic flow guiding can greatly reduce wall thickness non-uniformity.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511166656.5A CN120815899B (en) | 2025-08-20 | A forging apparatus and forging method for large-diameter heads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511166656.5A CN120815899B (en) | 2025-08-20 | A forging apparatus and forging method for large-diameter heads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN120815899A CN120815899A (en) | 2025-10-21 |
| CN120815899B true CN120815899B (en) | 2026-02-17 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202701178U (en) * | 2012-07-17 | 2013-01-30 | 郑州日产汽车有限公司 | Automatic centering guide device of die |
| CN216729145U (en) * | 2022-01-30 | 2022-06-14 | 天津重型装备工程研究有限公司 | Stamping forming tool for seal head |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202701178U (en) * | 2012-07-17 | 2013-01-30 | 郑州日产汽车有限公司 | Automatic centering guide device of die |
| CN216729145U (en) * | 2022-01-30 | 2022-06-14 | 天津重型装备工程研究有限公司 | Stamping forming tool for seal head |
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