CN112974710A - Forging die for steering knuckle and forming process thereof - Google Patents
Forging die for steering knuckle and forming process thereof Download PDFInfo
- Publication number
- CN112974710A CN112974710A CN202110288727.4A CN202110288727A CN112974710A CN 112974710 A CN112974710 A CN 112974710A CN 202110288727 A CN202110288727 A CN 202110288727A CN 112974710 A CN112974710 A CN 112974710A
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- China
- Prior art keywords
- die
- forging
- cavity
- blank
- lower die
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
Abstract
The invention relates to a forging die of a steering knuckle and a forming process thereof. The forging die of the steering knuckle comprises an upper die and a lower die, wherein the upper die and the lower die are respectively and correspondingly provided with three work step arrangements of blank making, flattening and finish forging; the die cavity for blank making is arranged at the lower position of the left side of the lower die, the flattened die cavity is arranged at the upper position of the left side of the lower die, the finish forging die cavity is arranged at the middle position of the lower die, and the die cavity for blank making, the flattened die cavity and the finish forging die cavity are correspondingly arranged on the corresponding lower die of the upper die; the cavity of the upper die for setting the blank is a deep cavity. The forging die forming process of the steering knuckle comprises the following steps: heating; preparing a blank; flattening; finish forging; the three-station arrangement mode originally created by the invention improves the surface quality of the forge piece, improves the material utilization rate, reduces the rejection rate, improves the production efficiency and reduces the cost.
Description
Technical Field
The invention relates to a forging die of a steering knuckle and a forming process thereof.
Background
When a steering knuckle forging is produced at present, the forging can be formed only by heating a blank twice, and the process has the following defects: the method has the advantages of serious surface oxidation pits of the forged piece, difficult molding, low material utilization rate, safe operation risk, high cost and the like.
Referring to fig. 1, the forging process flow for such a knuckle is as follows: heating (first time) → blank making (free forging) → heating (second time) → flattening (swaging) → finish forging (swaging). In the forging production process of the product, the blank making, the flattening and the final forging are not carried out on the same equipment, the time required for the blank to be repeatedly hit on an air hammer is relatively long, the continuous production of the next process step cannot be met after the temperature of the blank is reduced, the forged blank must be heated for the second time, and then the flattening and the final forging process steps are carried out on a 10T die forging hammer. The blank making by the air hammer belongs to free forging, the produced forged blank has poor consistency, and the forged piece can be filled insufficiently, so that the defect that the forged piece is not filled satisfactorily is avoided by enlarging the blank.
The invention discloses a CN111717281A automobile steering knuckle and an automobile steering assembly, and relates to the field of automobile application, wherein the automobile steering knuckle comprises a steering knuckle main body, a first support and a second support, the first support and the second support are respectively installed at the top and the bottom of the steering knuckle main body and are arranged in parallel, a first connecting hole is formed in the first support, a second connecting hole is formed in the second support, and the axes of the first connecting hole and the second connecting hole are parallel or collinear; the automobile steering knuckle assembly comprises the automobile steering knuckle, a first ball pin, a second ball pin and a driven part arranged on the first ball pin or the second ball pin, and the driven part is driven to rotate and further drives the automobile steering knuckle to rotate. The automobile steering knuckle assembly can save a steering tie rod in a steering system, has larger freedom degree of vehicle design, can realize large-angle steering of the vehicle, and greatly improves the maneuvering performance of the vehicle.
The invention relates to the technical field of forging dies, and discloses a large annular forging die and a forming process thereof. This large-scale annular forging mould and forming process thereof, through setting up the diaphragm, the blanking hole, dump bin and cushion, the user is when the user is using equipment, in sending into this equipment with metal preparation board 3, open the punching press oil top, these wastes material drop in the dump bin through the blanking hole when the demolding, the forging can not drop because length is great, so, in the forging can not sneak into to the waste material during demolding, the forging can not scraped the flower, user's vexation has been removed from, user's use has been made things convenient for.
The invention relates to a ball socket forging forming process, which comprises the following steps: selecting a blank according to the size of the ball socket; heating the blank by adopting an intermediate frequency furnace; placing the heated blank in a ball socket semi-finished product forging die, and pre-forging the blank into a ball socket semi-finished product with the shape of a finished product, wherein the ball socket semi-finished product is in a T shape, and one side of the ball socket semi-finished product is provided with a central hole; conveying the semi-finished ball socket product to a special metal processing production line to perform lathe pressing on an excircle; and (5) turning a plane and drilling the semi-finished ball socket by using a special metal processing production line. The invention has the advantages that: according to the production process, through the matching of the ball socket semi-finished product forging die and the special gold processing production line and the matching of the steps of forging, turning and pressing an excircle, turning a plane and drilling and the like, the ball socket gold processing is more convenient, and the compactness of a ball socket hardware at the forging position is high, so that the gold processing time is shortened, and the equipment utilization rate of the gold processing is greatly improved.
The invention discloses a free forging forming process for taper of a taper shaft, and provides a free forging forming process for taper of a taper shaft, which comprises the following steps: a clamp handle; upsetting: returning to the furnace 1180 and heating and preserving heat at 1270 ℃ for 8-12 hours, discharging, and upsetting to 1600mm high by a leakage plate; then pulling to 1550 multiplied by 1400mm flat square; returning to the furnace 1180 and heating and preserving heat at 1270 ℃ for 6-10 hours, discharging, and upsetting an inlet leakage disc to 1550mm high; then pulled to a square with a height of 1600mm by 1600mm and a height of 1630mm, and is octagonal; marking; taper drawing: after the step at the large end side of the taper shaft is pulled out, the large end is clamped by an operating machine, the slope is sequentially pulled out from the large end to the small end of the taper shaft by adopting an upper flat anvil and a lower V anvil in a subsection mode, the taper is finished by adopting an upper flat anvil and an inclined anvil block in a subsection mode, and finally the step at the small end side of the taper shaft is formed, so that the taper shaft is obtained. The invention can directly forge and form the taper shape in the forging process, saves raw materials, shortens the turning time, lightens the weight of steel ingots, reduces the load of a press and better ensures the forging and compacting effects.
The above patents do not disclose a three-station arrangement form, and the prior art does not address the forging and forming process of the steering knuckle.
Disclosure of Invention
The invention provides a forging die of a steering knuckle and a forming process thereof, wherein the blank manufacturing step adopts die forging forming, and only one time of heating is needed for a blank, so that the surface quality of a forged piece is greatly improved, the consistency of the forged piece is greatly improved after the die forging blank manufacturing is used, the problem of insufficient forged piece filling is solved, the weight of raw materials can be reduced, the utilization rate of the materials is improved, and the cost of the raw materials is reduced.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme, which is described by combining the accompanying drawings as follows:
a forging die for a steering knuckle comprises an upper die and a lower die, wherein the upper die and the lower die are respectively and correspondingly provided with three process step arrangements of blank making, flattening and finish forging.
Furthermore, a blank making cavity is arranged at the lower position of the left side of the lower die, a flattened cavity is arranged at the upper position of the left side of the lower die, a finish forging cavity is arranged at the middle position of the lower die, and the corresponding lower die of the upper die is correspondingly provided with the blank making cavity, the flattened cavity and the finish forging cavity.
Further, the cavity of the upper die for blank manufacturing is a deep cavity.
Furthermore, a lock catch structure is arranged on a corner of a forging die of the steering knuckle, and is used for ensuring that the error of the forged piece after die assembly meets the technical requirements.
Further, the number of the locking structures is three.
The forming process of the forging die of the steering knuckle comprises the following steps:
heating: the billet is heated by an electric heating furnace.
Blank preparation: and (4) placing the heated blank into a blank making cavity, moving the upper die downwards, and completing the blank making process after the upper die is contacted with the lower die.
Flattening: and moving the blank manufacturing step piece to a flattened cavity, and moving the upper die downwards to contact with the lower die to finish the flattening step.
Finish forging: and moving the flattening step piece to a final forging cavity, moving the upper die downwards, and completing the final forging step after the upper die is contacted with the lower die.
Further, the blank was heated to 1180-.
Compared with the prior art, the invention has the beneficial effects that:
the structure of the invention is originally created and does not appear in the retrieval result, compared with other structures, the three-station arrangement form of the invention is not originally created in the retrieval result, and the surface quality, the material utilization rate, the rejection rate, the production efficiency and the cost reduction of the forge piece are greatly improved.
Compared with the prior art, the forging die and the forming process thereof have the advantages that the forging can be formed by one-time heating, the problem of oxidation pits on the surface of the forging is solved, the surface quality of the forging is greatly improved, the forging is completely filled, the material utilization rate is improved from 63% to 68%, 5.5kg of raw materials are saved, the cost is reduced by about 100 yuan per piece, and the production efficiency is greatly improved.
Drawings
FIG. 1 is a flow chart of a prior art forging process;
FIG. 2 is a flow chart of a process for forming a forging die for a knuckle;
FIG. 3 is a schematic view of the upper and lower dies;
FIG. 4 is a schematic layout diagram of three steps of blank making, flattening and finish forging in a lower die;
FIG. 5 is a schematic layout diagram of three steps of blank making, flattening and finish forging in the upper die.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
the invention discloses a forging die of a steering knuckle and a forming process thereof.
The forging process scheme of the steering knuckle comprises the following steps: heating → blank making (10T swage) → flattening (10T swage) → finish forging (10T swage), as shown in fig. 2. The forging die is divided into an upper die and a lower die, as shown in fig. 3. The upper die and the lower die are respectively and simultaneously arranged to be manufactured into a blank, flattened and finally forged, as shown in figures 4 and 5. The forging and forming process comprises the following steps:
(1) heating: the blank was heated to 1180-.
(2) Blank preparation: and (4) placing the heated blank into a blank making cavity, moving the upper die downwards, and completing the blank making process after the upper die is contacted with the lower die.
(3) Flattening: and moving the blank manufacturing step piece to a flattening cavity, moving the upper die downwards, and completing the flattening step after contacting with the lower die.
(4) Finish forging: and moving the flattening step piece to a finish forging cavity, moving the upper die downwards, and completing the finish forging step after the upper die is contacted with the lower die.
The forging die for the steering knuckle is characterized in that a deep cavity is designed on an upper die, in the process of upsetting and forming a blank with heavy and long length on a forging die, the blank is separated from a die cavity by using the self weight of the blank and a large die-out angle, the problem of die sticking of a forge piece can be effectively solved, and meanwhile, because the deep cavity can also reduce the accumulation of oxide skins of the blank in the die cavity to the maximum extent on the upper die, the surface quality of the forge piece is ensured, as shown in figure 3.
The locking structures are designed at three corners of the die, three zero-angle locking can ensure that the forging error meets the technical requirements after die assembly, the forging error does not need to be additionally adjusted in the actual production process, the forging error defect is overcome, the rejection rate is reduced, and the production efficiency is improved, as shown in fig. 4.
The arrangement mode is favorable for the convenience of operation and improves the production efficiency by taking a lower die as an example, a blank making cavity is arranged at the left lower position of a die block, a blank making cavity is arranged at the left side position of the die block, a finish forging cavity is arranged at the middle position of the die block, and the arrangement mode is shown in fig. 4 and fig. 5.
The forging die can be arranged in three steps at the same time, and one workpiece is sequentially carried out step by step. The method realizes the upsetting of the heavy and long blanks on the forging die and the deep cavity processing on the upper die, and realizes the separation of the blanks from the cavity by utilizing the self weight of the blanks and the larger die angle.
The three steps are arranged on the die in a relative position relationship, the blank is manufactured and flattened on one side of the die block, and the final forging is carried out on the central position of the die block.
The three zero-angle lock catches ensure that the error of the forge piece after die filling meets the technical requirements, and the die does not need to be adjusted.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims. And those not described in detail in this specification are well within the skill of those in the art.
Claims (7)
1. The utility model provides a forging mould of knuckle, includes mould and lower mould, its characterized in that:
the upper die and the lower die are respectively and correspondingly provided with three process step arrangements of blank making, flattening and finish forging.
2. The forging die for steering knuckles according to claim 1, wherein:
the die cavity for blank making is arranged at the lower position of the left side of the lower die, the flattened die cavity is arranged at the upper position of the left side of the lower die, the finish forging die cavity is arranged at the middle position of the lower die, and the die cavity for blank making, the flattened die cavity and the finish forging die cavity are correspondingly arranged on the corresponding lower die of the upper die.
3. The forging die for a knuckle according to claim 1 or 2, wherein:
the cavity of the upper die for setting the blank is a deep cavity.
4. The forging die for steering knuckles according to claim 1, wherein:
and lock catch structures are arranged on corners of a forging die of the steering knuckle and used for ensuring that the forging error meets the technical requirements after die filling.
5. The forging die for steering knuckles according to claim 4, wherein:
the number of the lock catch structures is three.
6. The forming process of a forging die for a knuckle according to claim 1, comprising the steps of:
heating: the billet is heated by an electric heating furnace.
Blank preparation: and (4) placing the heated blank into a blank making cavity, moving the upper die downwards, and completing the blank making process after the upper die is contacted with the lower die.
Flattening: and moving the blank manufacturing step piece to a flattened cavity, and moving the upper die downwards to contact with the lower die to finish the flattening step.
Finish forging: and moving the flattening step piece to a final forging cavity, moving the upper die downwards, and completing the final forging step after the upper die is contacted with the lower die.
7. The molding process according to claim 6, wherein:
the blank was heated to 1180-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288727.4A CN112974710A (en) | 2021-03-18 | 2021-03-18 | Forging die for steering knuckle and forming process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110288727.4A CN112974710A (en) | 2021-03-18 | 2021-03-18 | Forging die for steering knuckle and forming process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112974710A true CN112974710A (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110288727.4A Pending CN112974710A (en) | 2021-03-18 | 2021-03-18 | Forging die for steering knuckle and forming process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112974710A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976788A (en) * | 2021-10-15 | 2022-01-28 | 山西豪钢重工股份有限公司 | Forging forming method for middle groove ledge |
| CN115945621A (en) * | 2022-12-27 | 2023-04-11 | 无锡派鑫航空科技有限公司 | Die forging forming die for aluminum alloy petroleum pipeline valve body and forming method thereof |
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| CN101607294A (en) * | 2009-07-08 | 2009-12-23 | 湖北三环锻造有限公司 | Medium and heavy automobile knuckle stamp forging extruding compound technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976788A (en) * | 2021-10-15 | 2022-01-28 | 山西豪钢重工股份有限公司 | Forging forming method for middle groove ledge |
| CN115945621A (en) * | 2022-12-27 | 2023-04-11 | 无锡派鑫航空科技有限公司 | Die forging forming die for aluminum alloy petroleum pipeline valve body and forming method thereof |
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| PB01 | Publication | ||
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Application publication date: 20210618 |