CN114289667A - Fork forging production mold, production device and preparation method thereof - Google Patents
Fork forging production mold, production device and preparation method thereof Download PDFInfo
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- CN114289667A CN114289667A CN202210072199.3A CN202210072199A CN114289667A CN 114289667 A CN114289667 A CN 114289667A CN 202210072199 A CN202210072199 A CN 202210072199A CN 114289667 A CN114289667 A CN 114289667A
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Abstract
The invention relates to a fork forging production die, a production device and a preparation method thereof, relating to the technical field of fork forgings, wherein the production die comprises an upper punch, the top of which is provided with a pressure plate for carrying out extrusion forming on the top of the fork forging; the top of the upper die is provided with a sleeve, and the size of the sleeve is matched with that of the upper punch so that the upper punch can penetrate into the sleeve; and the lower die is arranged below the upper die, the lower die and the upper die are matched to form a forming cavity, and a second punch and a third punch are respectively arranged on two sides of the lower die and used for extruding fork lugs of the fork forging. The upper punch performs extrusion forming on the fork forging under the action of the power assembly, the inner hole is formed in the top, the second punch and the third punch which are arranged on two sides of the lower die move in the direction inside the lower die under the action of the power assembly, the fork lugs are formed, the total weight of the prepared shaft fork is further reduced, and the preparation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of fork parts, in particular to a fork forging production die, a fork forging production device and a fork forging production method.
Background
The lightweight of the automobile is to reduce the preparation quality of the automobile as much as possible on the premise of ensuring the strength and the safety performance of the automobile, thereby improving the dynamic property of the automobile, reducing the fuel consumption and reducing the exhaust pollution. Experiments prove that if the weight of the whole automobile is reduced by 10%, the fuel efficiency can be improved by 6-8%; the oil consumption can be reduced by 0.3-0.6 liter per hundred kilometers when the mass of the vehicle is reduced by 100 kilograms; the weight of the automobile is reduced by 1 percent, and the oil consumption can be reduced by 0.7 percent. Currently, the light weight of automobiles has become a trend of the development of automobiles in the world due to the demands for environmental protection and energy saving. Fork forgings are important connecting pieces used in a large number of transmission and binding systems of automobiles and container ships, and are used for transmitting the torque of an engine and bearing bending combined load. At present, automobile, truck, heavy truck, motor coach and other various vehicle transmission systems all over the world and container ships all adopt the fork die forging as a key transmission and binding fixing part, and the market demand is very large. Therefore, the processing technology is slightly changed in the production and processing process, the quality is slightly improved, and the cost is slightly reduced, so that great market influence and economic effect are generated.
In the prior art, the use of a die in the forging process is frequently abraded when a lightweight fork forging die is produced, so that the service life of the fork forging die is extremely short.
In conclusion, a fork forging die capable of bearing extrusion in the forging process and prolonging the service life of the die is still lacking in the prior art.
Disclosure of Invention
Therefore, the invention provides a fork forging production die which is used for overcoming the problem that a fork forging die which can bear extrusion in the forging process and prolong the service life of the die is still lacking in the prior art.
In order to achieve the purpose, the invention provides a fork forging production die, a production device and a preparation method thereof, wherein the production die comprises,
the top of the upper punch is provided with a pressure plate for carrying out extrusion forming on the top of the fork forging;
the top of the upper die is provided with a sleeve, and the size of the sleeve is matched with that of the upper punch so that the upper punch can penetrate into the sleeve;
the lower die is arranged below the upper die and matched with the upper die to form a forming cavity, and a second punch and a third punch are arranged on two sides of the lower die respectively and used for extruding fork lugs of fork forging pieces.
Further, the upper punch comprises a first upper punch piece and a second upper punch piece, the first upper punch piece is used for extruding the fork forging to be extruded and finishing the preparation of an inner hole at the top, and the second upper punch piece is used for transmitting acting force to the first upper punch piece and generating longitudinal acting force on the fork forging to be extruded under the action of the power assembly.
Further, the cross-section of the first upper punch member is smaller than the cross-section of the second upper punch member, so that no loss of force is involved in the transfer of force through the second upper punch member to the first upper punch member.
Further, the second punch comprises a first transmission part and a first pressing part, the first transmission part transmits acting force to the first pressing part under the action of the power assembly, and the first pressing part moves transversely to generate acting force on one fork ear of the fork.
Further, the third punch comprises a second transmission part and a second pressing part, the second transmission part transmits acting force to the second pressing part under the action of the power assembly, and the transverse movement of the second pressing part generates acting force on fork lugs on the other side of the fork.
Further, a protruding portion is arranged below the sleeve, a concave portion is arranged at the top of the lower die, and the concave portion and the protruding portion are matched to enable the lower die and the upper die to be matched to form a forming cavity.
Further, the bottom of the lower die is provided with four through holes.
Furthermore, a concave portion is arranged below the sleeve, a convex portion is arranged at the top of the lower die, and the concave portion and the convex portion are matched to enable the lower die and the upper die to be matched to form a forming cavity.
Furthermore, the invention also provides a production device for fork forgings, which comprises,
the lower surface of the cover plate is fixedly provided with a first upper punch, and two sides below the cover plate are symmetrically provided with first oil cylinders so that the cover plate can move up and down along the axial direction of the first oil cylinders;
the top of the upper die is provided with a sleeve which corresponds to the first upper punch, and two sides below the upper die are symmetrically provided with second oil cylinders so that the upper die can move up and down along the axial direction of the second oil cylinders;
the lower die is arranged below the upper die, the lower die and the upper die are matched to form a forming cavity, a third oil cylinder and a fourth oil cylinder are arranged on two sides of the lower die respectively, the third oil cylinder is connected with the second punch, and the fourth oil cylinder is connected with the third punch and used for extruding fork lugs of fork forging pieces.
Further, the invention also provides a preparation method for the fork forging, which comprises the following steps,
step S1, matching the upper die with the lower die to match the upper die with the lower die, lifting the upper punch to a preset height, and placing the fork forging to be extruded into the sleeve from the sleeve;
step S2, the upper punch moves downwards, enters the sleeve to extrude the fork forging to be extruded, and completes the preparation of the inner hole at the top of the fork forging to be extruded;
step S3, when the upper punch continues to move downwards to enable the pressure plate on the upper punch to be abutted against the sleeve, the upper punch stops moving, the second punch and the third punch which are positioned on two sides of the lower die start to move towards the inner part of the lower die, and the fork forging extruded by the upper punch is subjected to secondary forming to complete the preparation of fork lugs;
step S4, when the second punch and the third punch move to the limit positions, the second punch and the third punch stop moving and start to move towards the outer part of the lower die until the second punch and the third punch do not touch the lower die;
step S5, when the upper punch moves upwards to a preset height, the upper die moves upwards to a preset position to open the upper die and the lower die, and the prepared product moves upwards along with the upper die;
step S6, a discharging rod is placed into an upper die through a sleeve on the top of the upper die by a mechanical arm, a discharging disc is moved to the position right below the sleeve by the mechanical arm, an upper punch starts to move downwards to enter the sleeve, and a prepared product is ejected out under the ejection action of the upper punch;
and step S7, dropping the prepared product into a discharge tray, and moving the discharge tray to a conveyor belt by the manipulator for transmission.
Compared with the prior art, the invention has the beneficial effects that the invention provides the die for fork forging production, the upper punch enters the forming cavity formed by the upper die and the lower die after being matched through the sleeve in the upper die, the upper punch carries out extrusion forming on the fork forging under the action of the power assembly, the preparation of an inner hole is completed at the top, when a pressure plate on the upper punch is abutted to the sleeve, the upper punch and the third punch arranged at the two sides of the lower die move towards the inner part of the lower die under the action of the power assembly until the fork lug is prepared when the fork forging moves to a limit position, then the upper punch moves upwards to a preset height when the upper die moves upwards to open the upper die and the lower die under the action of the power assembly and moves towards the opposite direction in the lower die without being released from the lower die, the discharging plate is moved to the position under the sleeve along with the mechanical arm, the discharging rod is placed into the upper die through the sleeve by the mechanical arm, the upper punch moves downwards to enter the sleeve, a prepared product is ejected to the discharging plate, the discharging plate is subjected to subsequent transmission cooling along with the conveying belt, the automation degree of the whole preparation process is high, waste of raw materials is greatly reduced, energy conservation is facilitated, the total weight of the prepared shaft fork is further reduced, the light weight requirement of the existing whole factory is met, manual input is reduced, and the preparation efficiency is improved.
In particular, the upper punch in the embodiment of the invention comprises a first upper punch and a second upper punch, the first upper punch is used for extruding a fork forging to be extruded and completing the preparation of an inner hole at the top, the second upper punch is used for transferring acting force to the first upper punch and generating longitudinal acting force on the fork forging to be extruded under the action of the power assembly, the cross section of the first upper punch is set to be smaller than that of the second upper punch, the loss of force in the transferring process is reduced, no loss is generated when the force is transferred to the first upper punch through the second upper punch, the setting of the power tonnage of the power assembly of the upper punch can be reduced, the preparation efficiency of the fork forging is improved, and the service life of the die is prolonged,
further, set up second drift and third drift into transmission portion and extrusion portion, transmission portion will exert oneself under power component's effect and transmit for extrusion portion, and extrusion portion treats the forging and carries out extrusion, accomplishes the preparation of fork ear, has improved the preparation success rate of fork ear, and the messenger treats that the external force that the forging received is even, and the efficiency of preparation promotes to improve the life of mould.
Particularly, the protruding part and the recessed part are arranged below the sleeve according to the forging characteristics of different fork forging pieces, so that the depth of the upper die is deeper than that of the lower die, the upper die has higher extrusion force relative to the lower die in the forging process, a full, sufficient and finished product with a smooth surface can be obtained even if the depth of the inner cavity of the upper die is deep, and the service life of the die is prolonged.
Furthermore, the fork forging production device is provided, the cover plate and the power assembly are arranged to perfect the arrangement of the device, the manipulator can be arranged to throw in the forged discharging rod and move the discharging disc, the automation of the whole preparation process is completed, the preparation efficiency is improved, the die is peripherally protected in the device application process, and the service life of the die is prolonged.
Particularly, the invention further provides a fork forging production die, a production device and a preparation method thereof, the preparation process is optimized from the preparation flow, the rod part pricking hole, namely the inner hole, is firstly prepared for fork products, then the fork lugs are prepared, namely the lug holes at two sides, the whole weight of the prepared products is reduced by 30%, 2-3 processes are needed for completing the traditional process, and the process is one-step forming, only 1-2 seconds are needed, the service life of the die is prolonged, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of a fork forging production mold according to the invention;
FIG. 2 is a schematic overall structure diagram of the fork forging production mold of the invention;
FIG. 3 is a schematic structural diagram of a lower die used in a fork forging production die according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another embodiment of the lower die for the fork forging production die of the invention;
FIG. 5 is a schematic structural diagram of a lower die for a fork forging production die according to still another embodiment of the invention;
FIG. 6 is a schematic flow chart of the method for manufacturing fork forgings according to the invention;
FIG. 7 is a schematic structural diagram of a production device corresponding to the fork forging production mold.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the invention provides a production mold for fork forgings, which comprises an upper punch 11, a pressing plate 13 and a lower punch, wherein the pressing plate 13 is arranged at the top of the upper punch and is used for carrying out extrusion forming on the top of the fork forgings; the upper die 2 is provided with a sleeve 21 at the top, and the sleeve 21 is matched with the size of the upper punch 11 so that the upper punch 11 can penetrate into the sleeve 21; the lower die 3 is arranged below the upper die 2, the lower die 3 and the upper die 2 are matched to form a forming cavity, and a second punch 33 and a third punch 34 are respectively arranged on two sides of the lower die 3 and used for extruding fork lugs of fork forging pieces.
Specifically, in the embodiment of the invention, the fork forging to be extruded is formed in one step, firstly, the inner hole is prepared at the rod part, namely the top part, of the fork product, and then the fork lugs are prepared from two sides, so that the prepared product can reduce thirty percent of the weight of the whole fork product, while the preparation of the traditional fork product can be completed by two to three processes.
Specifically, in the embodiment of the present invention, the upper punch 11 includes a first upper punch 111 and a second upper punch 112, the first upper punch 111 is used for extruding the fork forging to be extruded and completing the preparation of the inner hole at the top, and the second upper punch 112 is used for transmitting the acting force to the first upper punch 111 and generating the acting force in the longitudinal direction to the fork forging to be extruded under the action of the power assembly. The first upper punch member 111 has a smaller cross-section than the second upper punch member 112 so that no loss of force is experienced in the transfer of force through the second upper punch member 112 to the first upper punch member 111.
Specifically, in the embodiment of the present invention, the second punch 33 includes a first transmission portion that transmits a force to a first pressing portion by a power assembly, and the first pressing portion moves laterally to generate a force on one fork ear of the fork. The third punch 34 includes a second transmission portion that transmits an acting force to a second pressing portion under the action of a power assembly, and the lateral movement of the second pressing portion generates an acting force to a fork lug on the other side of the fork. The second punch 33 and the third punch 34 are symmetrically arranged, a power assembly of the second punch 33 and the third punch 34 may be an oil cylinder, the second punch 33 and the third punch 34 are made to extend and retract through the extending and retracting movement of the oil cylinder to prepare the fork lug, or other power assemblies may be arranged.
Referring to fig. 3-5, which is a type of the lower die 3 for a fork forging production die according to the present invention, a through hole is formed in the bottom of the lower die 3, or a protrusion corresponding to a shaft fork structure is formed in the bottom of the lower die 3, so that a fork to-be-forged piece can be extruded in the protruding direction, through holes 36 are formed in two corresponding sides of the lower die 3, the through holes 36 allow the second punch 33 and the third punch 34 to pass through, the through holes 36 extend from the outside of the lower die 3 into a forming cavity, and the fork lugs are prepared under the action of the second punch 33 and the third punch 34 on the two sides.
Specifically, in the embodiment of the present invention, a protruding portion is disposed below the sleeve 21, and a recessed portion is disposed on the top of the lower mold 3, and the recessed portion and the protruding portion cooperate to clamp the lower mold 3 and the upper mold 2 to form a molding cavity. According to the invention, the protruding part is arranged below the sleeve 21, so that the depth of the upper die 2 is deeper than that of the lower die 3, and the upper die 2 has larger extrusion force relative to the lower die 3 in the forging process, so that a full, sufficient and smooth finished product can be obtained even if the depth of the inner cavity of the upper die 2 is deep, and the lower die 3 can achieve a full and smooth lower surface of the finished product in a shallow inner cavity due to the fact that the depth is shallow even if the filling force is not large, thereby effectively improving the smoothness of the forged product of the fork forging.
Specifically, in the embodiment of the invention, the bottom of the lower die 3 is provided with four through holes, so that the pressure in the forming cavity can be leaked out through the through holes, and the service life and the time of the die are prolonged.
Specifically, in the embodiment of the invention, the production die of the fork forging can finish the preparation of products such as broken teeth, sliding forks, node forks, shaft forks and the like.
Specifically, in the embodiment of the present invention, a concave portion is disposed below the sleeve 21, a convex portion is disposed on the top of the lower mold 3, and the concave portion and the convex portion cooperate to clamp the lower mold 3 and the upper mold 2 to form a molding cavity. According to the mould with the difference of the type of the product of production, adjustment sleeve 21 sets up the recess or sets up protrusion 35, improves the life of mould, when sleeve 21's below sets up the recess, through the cooperation between recess and the protrusion 35 for the effect of compound die is better between last mould 2 and the bed die 3, can make the faster lower mould 3 that spreads into of power that spreads into in the sleeve 21 moreover, more thorough to the forging of fork class forging, improves the forging efficiency of mould.
Referring to fig. 6, the invention further provides a method for manufacturing fork forging, comprising,
step S1, matching the upper die 2 and the lower die 3 to enable the upper die 2 and the lower die 3 to be matched, lifting the upper punch 11 to a preset height, and placing the fork forging to be extruded into the sleeve 21 from the sleeve 21;
step S2, the upper punch 11 moves downwards, the upper punch 11 enters the sleeve 21 to extrude the fork forging to be extruded, and the preparation of an inner hole is completed at the top of the upper punch 11;
step S3, when the upper punch 11 continues to move downward to make the platen 13 on the upper punch 11 collide with the sleeve 21, the upper punch 11 stops moving, the second punches 33 and the third punches 34 located at two sides of the lower die 3 start to move toward the inside of the lower die 3, and the fork forging extruded by the upper punch 11 is subjected to secondary forming to complete the preparation of fork ears;
step S4, when the second punch 33 and the third punch 34 move to the limit position, the second punch 33 and the third punch 34 stop moving, and start moving to the direction outside the lower die 3 until the second punch 33 and the third punch 34 do not touch the lower die 3;
step S5, when the upper punch 11 moves upward to a preset height, the upper die 2 moves upward to a preset position to open the upper and lower dies, and the prepared product moves upward along with the upper die 2;
step S6, a manipulator puts a discharging rod into the upper die 2 through the sleeve 21 on the top of the upper die 2, the manipulator moves a discharging disc to be right below the sleeve 21, the upper punch 11 starts to move downwards to enter the sleeve 21, and a prepared product is ejected under the ejection effect of the upper punch 11;
and step S7, dropping the prepared product into a discharge tray, and moving the discharge tray to a conveyor belt by the manipulator for transmission.
Referring to fig. 7, the invention further provides a production device for fork forgings, which includes a cover plate 1, wherein a first upper punch 11 is fixedly arranged on the lower surface of the cover plate 1, and first oil cylinders 12 are symmetrically arranged on two sides below the cover plate 1, so that the cover plate 1 can move up and down along the axial direction of the first oil cylinders 12; the top of the upper die 2 is provided with a sleeve 21 which corresponds to the first upper punch 11, and two sides of the lower part of the upper die 2 are symmetrically provided with second oil cylinders 22 so that the upper die 2 can move up and down along the axial direction of the second oil cylinders 22; the lower die 3 is arranged below the upper die 2, the lower die 3 and the upper die 2 are matched to form a forming cavity, a third oil cylinder 31 and a fourth oil cylinder 32 are respectively arranged on two sides of the lower die 3, the third oil cylinder 31 is connected with a second punch 33, and the fourth oil cylinder 32 is connected with a third punch 34 and used for extruding fork lugs of fork forging pieces.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A production die for fork forgings is characterized by comprising,
the top of the upper punch is provided with a pressure plate for carrying out extrusion forming on the top of the fork forging;
the top of the upper die is provided with a sleeve, and the size of the sleeve is matched with that of the upper punch so that the upper punch can penetrate into the sleeve;
the lower die is arranged below the upper die and matched with the upper die to form a forming cavity, and a second punch and a third punch are arranged on two sides of the lower die respectively and used for extruding fork lugs of fork forging pieces.
2. The die for fork forging production according to claim 1, wherein the upper punch comprises a first upper punch piece and a second upper punch piece, the first upper punch piece is used for extruding the fork forging to be extruded and completing the preparation of the inner hole at the top, and the second upper punch piece is used for transmitting acting force to the first upper punch piece and generating acting force in the longitudinal direction on the fork forging to be extruded under the action of the power assembly.
3. The die for fork forging production of claim 2, wherein the cross section of the first upper punch member is smaller than the cross section of the second upper punch member, so that no loss of force is caused to pass through the second upper punch member to the first upper punch member.
4. The die for fork forging production of claim 3, wherein the second punch comprises a first transmission portion and a first pressing portion, the first transmission portion transmits acting force to the first pressing portion under the action of a power assembly, and the transverse movement of the first pressing portion generates acting force on one fork ear of the fork.
5. The die for fork forging production of claim 4, wherein the third punch comprises a second transmission portion and a second pressing portion, the second transmission portion transmits acting force to the second pressing portion under the action of a power assembly, and transverse movement of the second pressing portion generates acting force on fork lugs on the other side of the fork.
6. The die for fork forging production as claimed in claim 5, wherein a protruding portion is arranged below the sleeve, a recessed portion is arranged at the top of the lower die, and the recessed portion and the protruding portion are matched to enable the lower die and the upper die to be matched to form a forming cavity.
7. The die for fork forging production of claim 6, wherein the bottom of the lower die is provided with four through holes.
8. The die for fork forging production as claimed in claim 7, wherein a concave portion is arranged below the sleeve, a convex portion is arranged at the top of the lower die, and the concave portion and the convex portion are matched to enable the lower die and the upper die to be matched to form a forming cavity.
9. A production device for fork forgings, which is characterized by comprising the production die of fork forgings as claimed in claims 1 to 8,
the lower surface of the cover plate is fixedly provided with a first upper punch, and two sides below the cover plate are symmetrically provided with first oil cylinders so that the cover plate can move up and down along the axial direction of the first oil cylinders;
the top of the upper die is provided with a sleeve which corresponds to the first upper punch, and two sides below the upper die are symmetrically provided with second oil cylinders so that the upper die can move up and down along the axial direction of the second oil cylinders;
the lower die is arranged below the upper die, the lower die and the upper die are matched to form a forming cavity, a third oil cylinder and a fourth oil cylinder are arranged on two sides of the lower die respectively, the third oil cylinder is connected with the second punch, and the fourth oil cylinder is connected with the third punch and used for extruding fork lugs of fork forging pieces.
10. A method for preparing fork forging, which is characterized by comprising the fork forging production die of claims 1-8,
step S1, matching the upper die with the lower die to match the upper die with the lower die, lifting the upper punch to a preset height, and placing the fork forging to be extruded into the sleeve from the sleeve;
step S2, the upper punch moves downwards, enters the sleeve to extrude the fork forging to be extruded, and completes the preparation of the inner hole at the top of the fork forging to be extruded;
step S3, when the upper punch continues to move downwards to enable the pressure plate on the upper punch to be abutted against the sleeve, the upper punch stops moving, the second punch and the third punch which are positioned on two sides of the lower die start to move towards the inner part of the lower die, and the fork forging extruded by the upper punch is subjected to secondary forming to complete the preparation of fork lugs;
step S4, when the second punch and the third punch move to the limit positions, the second punch and the third punch stop moving and start to move towards the outer part of the lower die until the second punch and the third punch do not touch the lower die;
step S5, when the upper punch moves upwards to a preset height, the upper die moves upwards to a preset position to open the upper die and the lower die, and the prepared product moves upwards along with the upper die;
step S6, a discharging rod is placed into an upper die through a sleeve on the top of the upper die by a mechanical arm, a discharging disc is moved to the position right below the sleeve by the mechanical arm, an upper punch starts to move downwards to enter the sleeve, and a prepared product is ejected out under the ejection action of the upper punch;
and step S7, dropping the prepared product into a discharge tray, and moving the discharge tray to a conveyor belt by the manipulator for transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210072199.3A CN114289667A (en) | 2022-01-21 | 2022-01-21 | Fork forging production mold, production device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210072199.3A CN114289667A (en) | 2022-01-21 | 2022-01-21 | Fork forging production mold, production device and preparation method thereof |
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| Publication Number | Publication Date |
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| CN114289667A true CN114289667A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210072199.3A Pending CN114289667A (en) | 2022-01-21 | 2022-01-21 | Fork forging production mold, production device and preparation method thereof |
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| Country | Link |
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| CN (1) | CN114289667A (en) |
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- 2022-01-21 CN CN202210072199.3A patent/CN114289667A/en active Pending
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