CN113798426A - Knuckle hot forging side cut automatic production line - Google Patents
Knuckle hot forging side cut automatic production line Download PDFInfo
- Publication number
- CN113798426A CN113798426A CN202110999679.XA CN202110999679A CN113798426A CN 113798426 A CN113798426 A CN 113798426A CN 202110999679 A CN202110999679 A CN 202110999679A CN 113798426 A CN113798426 A CN 113798426A
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- Prior art keywords
- trimming
- die
- clamp
- channel
- finish forging
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
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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
- B21J13/08—Accessories for handling work or tools
- B21J13/10—Manipulators
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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
- 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
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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
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to the technical field of steering knuckle forging, in particular to an automatic steering knuckle hot forging trimming production line which comprises a finish forging press, a trimming press, a finish forging die and a trimming die, wherein the trimming die comprises an upper trimming die and a lower trimming die, a transfer channel is arranged between the finish forging press and the trimming press, a transfer device is arranged at the transfer channel, a feeding channel is arranged at one side of the finish forging press, a feeding device is arranged at the feeding channel, a material returning channel is arranged at one side of the trimming press, a material returning device is arranged at the material returning channel, the transfer device is provided with a second clamp for transferring a workpiece from the lower finish forging die to the lower trimming die through the transfer channel, the material returning device is provided with a third clamp for taking the workpiece and a flash out through the material returning channel, the automatic steering knuckle hot forging trimming production line is scientific in structure and reasonable arrangement of a production line, and the second clamp and the third clamp are matched, so that automatic transfer is realized, the production beat is accelerated, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of steering knuckle forging, in particular to an automatic steering knuckle hot forging trimming production line.
Background
The automobile steering knuckle needs to be subjected to the procedures of pre-forging, finish forging, trimming and the like during forging, the process is carried out in a hot state, the requirement on production takt is high, the problem that the workpiece cannot be forged due to the fact that the takt is too slow in temperature reduction is avoided, the workpiece is complex in structure, irregular in shape, large in weight and high in precision, and the production takt is influenced if the workpiece cannot be grasped and firmly taken out of the die or the workpiece is inclined. In the prior art, a long-arm tool is generally manually operated to clamp and transport, so that the labor intensity is high, the environmental temperature is high, and the processing procedure is often influenced by misoperation.
Disclosure of Invention
The invention aims to provide an automatic production line for hot forging and trimming of a steering knuckle, which is scientific in structure, a press and a die are arranged in a certain way by matching an improved clamp with a transfer device to form an automatic production line, workpieces are clamped reliably, the production efficiency is effectively improved, and disqualification caused by the fact that the temperature is lower than the forging temperature due to heat loss of the workpieces is avoided.
The technical scheme adopted by the invention for solving the technical problems is as follows: the automatic production line for the hot forging and trimming of the steering knuckle comprises a finish forging press and a trimming press, wherein the finish forging press is fixedly connected with a finish forging die, the finish forging die comprises a finish forging upper die and a finish forging lower die, a rod cavity of the finish forging lower die is arranged in a vertical downward direction, the trimming press is fixedly connected with a trimming die, the trimming die comprises a trimming upper die and a trimming lower die, a transfer passage is arranged between the finish forging press and the trimming press, a transfer device is arranged at the position of the transfer passage, a feeding passage is arranged at one side of the finish forging press, a feeding device is arranged at the position of the feeding passage, a material returning passage is arranged at one side of the trimming press, and a material returning device is arranged at the position of the material returning passage;
the long lug cavities and the short lug cavities of the finish forging die are arranged along the direction of the transfer channel;
the trimming upper die comprises a male die and a stripper plate, wherein the stripper plate is used for pushing out the flash sleeved outside the male die downwards according to an instruction;
the feeding device is provided with a feeding mechanical arm, and the front end of the feeding mechanical arm is provided with a first clamp used for placing a workpiece into the finish forging lower die through a feeding channel;
the transferring device is provided with a transferring mechanical arm, and the front end of the transferring mechanical arm is provided with a second clamp for transferring the workpiece from the finish forging lower die to the trimming lower die through a transferring channel;
the second clamp comprises a second cylinder frame and a second cylinder, one end of the second cylinder frame is connected with the transfer mechanical arm, the other end of the second cylinder frame is provided with two fixed connecting rods and a movable connecting rod, the two fixed connecting rods are arranged in parallel, the movable connecting rod is positioned between the two fixed connecting rods, the middle part of the movable connecting rod is hinged with the middle part of the fixed connecting rod, the upper end of the movable connecting rod is hinged with the second cylinder, the upper end of the fixed connecting rod is fixedly connected with the second cylinder frame, and the lower ends of the movable connecting rod and the fixed connecting rod are three abutting points used for outwards opening and abutting against the inner side of the knuckle;
the material returning device is provided with a material returning mechanical arm, and the front end of the material returning mechanical arm is provided with a third clamp used for taking out the workpiece and the flash through a material returning channel;
the third clamp comprises a third cylinder frame, a third cylinder and a clamp seat, the clamp seat is provided with two lug clamps for clamping the lug parts of the steering knuckle, and the upper side of the clamp seat is provided with a material receiving plate for receiving the flash pushed downwards by the discharging plate.
Preferably, the two ear clamps level is stretched out, the middle part of two ear clamps through the hinge pin with the clamp seat is connected, the afterbody of two ear clamps is provided with waist round hole respectively, be provided with the sliding pin in the waist round hole, the sliding pin with the flexible end fixed connection of third cylinder.
Preferably, a feeding conveyor belt for conveying the workpiece to be processed is arranged on the side surface of the feeding device.
Preferably, a blanking conveying belt and a flash collecting box are arranged on the side face of the trimming and returning device.
Preferably, the transfer channel is provided with a sliding track, and the transfer mechanical arm is connected with the sliding track in a sliding manner.
Preferably, a sliding track is arranged at the feeding channel, and the feeding mechanical arm is connected with the sliding track in a sliding manner.
The invention has the beneficial effects that:
1. the rational arrangement production line, two sides of finish forging press are the material loading passageway respectively, the transportation passageway, two sides of side cut press are the transportation passageway respectively, the material returned passageway, these four passageways all are the space between the stand of utilizing the press, through to current press, the mould reforms transform the realization, each clamp of cooperation, thereby automatic transportation has been realized, the production beat has been accelerated, the production efficiency has been improved, the production beat of having avoided leading to because various problems among the prior art is slow, thereby make knuckle temperature reduction can not reach the forging requirement, cause the rejection rate higher.
2. Two sets of pincers that this production line used: second clamp, third clamp, wherein, the second clamp is when taking out the work piece, and fixed connecting rod removes to the ear inboard and contradict the inboard of long ear or short ear, thereby activity connecting rod rotates the inboard of contradicting short ear or long ear relatively, and three point contradicts and outwards expands tightly to fixed knuckle, perpendicular upwards rise again, this in-process centre gripping is firm, and the work piece can not incline, can not the tool and die cause to collide with, extrude, has avoided among the prior art work piece card to die in the die cavity.
Compared with a two-jaw telescopic clamp commonly used in the prior art, the three-jaw clamp has the advantages that the clamp cannot deviate and swing, the workpiece is ensured to be vertical, the requirement on the moving accuracy of a transfer mechanical arm is not high, due to the requirement of a drawing angle, the shape between two lug parts is approximately V-shaped, the two sides of the two lug parts are both inclined, and the bottom of the two lug parts is slightly flat.
3. The third clamp used by the invention is matched with the structure of the trimming die, and simultaneously realizes the functions of clamping the workpiece and connecting the flash. Particularly, it is first down to press from both sides and gets the work piece, then goes upward, and the stripper of cut off die descends and makes the overlap fall and fall on connecing the flitch, then material returned arm translation to overlap collecting box, and the upset makes the overlap fall, then material returned arm moves to the unloading conveyer belt again and puts down the work piece.
Drawings
FIG. 1 is a schematic structural view of an automatic production line for hot forging and trimming of a knuckle according to the present invention.
Fig. 2 is a partial structural schematic view of the trimming upper die of the present invention.
Fig. 3 is a schematic view of the structure of the second clamp of the present invention.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a schematic view of the third clamp of the present invention.
Fig. 6 is a top view of the ear clamp of fig. 5.
Description of reference numerals:
1-finish forging press 2-trimming press
3-transfer device 31-transfer mechanical arm
32-second clamp 321-second Cylinder frame
322-second cylinder 323-fixed connecting rod
324-movable connecting rod 4-feeding device
41-feeding mechanical arm 5-material returning device
51-returning mechanical arm 52-third clamp
521-third Cylinder frame 522-third Cylinder
523-clamp seat 524-ear clamp
525-receiving plate 526-hinge pin
527-sliding pin 6-trimming die
61-punch 62-stripper plate.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which are not intended to limit the scope of the invention.
As shown in fig. 1 to 6, the knuckle hot forging trimming automatic production line of the embodiment includes a finish forging press 1 and a trimming press 2, wherein the finish forging press 1 and the trimming press 2 are both provided with four columns, the finish forging press 1 is fixedly connected with a finish forging die, the finish forging die includes a finish forging upper die and a finish forging lower die, a rod cavity of the finish forging lower die is arranged along a vertical downward direction, the trimming press 2 is fixedly connected with a trimming die 6, and the trimming die 6 includes a trimming upper die and a trimming lower die.
According to the invention, a transfer channel is arranged between the finish forging press 1 and the trimming press 2, a transfer device 3 is arranged at the transfer channel, a feeding channel is arranged at one side of the finish forging press 1, a feeding device 4 is arranged at the feeding channel, a material returning channel is arranged at one side of the trimming press 2, and a material returning device 5 is arranged at the material returning channel. The pre-forged workpiece is placed into a finish forging die for finish forging through a feeding device 4, then the workpiece is transferred to a trimming die 6 for trimming through a transfer device 3, and then the flash and the workpiece return are conveyed to the next procedure.
To accommodate the requirements of the second gripper 32, the long lug cavities and the short lug cavities of the finish forging die are arranged in the direction of the transfer passage.
The trimming upper die comprises a male die 61 and a discharging plate 62 used for pushing out the flash sleeved outside the male die 61 downwards according to instructions, as shown in fig. 2, the male die 61 moves upwards after cutting the flash, the flash is clamped and embedded outside the male die 61, and then when the material receiving plate 525 moves to the lower part of the discharging plate 62, the discharging plate 62 moves downwards to push out the flash downwards and fall on the material receiving plate 525.
The feeding device 4 is provided with a feeding mechanical arm 41, the front end of the feeding mechanical arm 41 is provided with a first clamp used for placing a workpiece into a finish forging lower die through a feeding channel, and when the first clamp is placed into the workpiece, a cavity of a finish forging die can be used for positioning the rod part of the steering knuckle, so that the requirement is low, and the realization is easy.
As shown in fig. 3 and 4, the transfer device 3 is provided with a transfer robot 31, and the front end of the transfer robot 31 is provided with a second clamp 32 for transferring the workpiece from the finish forging lower die to the trimming lower die through the transfer passage. Specifically, the second clamp 32 includes a second cylinder frame 321 and a second cylinder 322, one end of the second cylinder frame 321 is connected to the transfer robot arm 31, the other end of the second cylinder frame 321 is provided with two fixed links 323 and a movable link 324, the two fixed links 323 are arranged in parallel, the movable link 324 is located between the two fixed links 323, the middle of the movable link 324 is hinged to the middle of the fixed link 323, the upper end of the movable link 324 is hinged to the second cylinder 322, the upper end of the fixed link 324 is fixedly connected to the second cylinder frame 321, the lower ends of the movable link 324 and the fixed link 323 are three contact points for contacting the inner side of the knuckle ear outwards, when in clamping, the workpiece can be reliably clamped by the three contact points, the second cylinder 322 drives the movable link 324 to rotate outwards to form an outwards expanding force, the force is large, and the workpiece can be fixed well.
The material returning device 5 is provided with a material returning mechanical arm 51 as shown in fig. 5 and 6, and the front end of the material returning mechanical arm 51 is provided with a third clamp 52 for taking out the workpiece and the flash through a material returning channel; the third clamp 52 comprises a third cylinder frame 521, a third cylinder 522 and a clamp seat 523, the clamp seat 523 is provided with two lug clamps 524 for clamping the lug part of the steering knuckle, and the upper side of the clamp seat 523 is provided with a material receiving plate 525 for receiving the flash pushed out downwards by the discharging plate 62.
The two ear clamps 524 extend horizontally, the middle parts of the two ear clamps 524 are connected with the clamp seat 523 through the hinge pins 526, the tails of the two ear clamps 524 are respectively provided with a waist circular hole, a sliding pin 527 is arranged in the waist circular hole, and the sliding pin 527 is fixedly connected with the telescopic end of the third cylinder 522.
And a feeding conveyor belt for conveying the workpiece to be processed is arranged on the side surface of the feeding device 4.
And a blanking conveying belt and a flash collecting box are arranged on the side surface of the trimming and returning device 5.
The transfer passage is provided with a sliding track, and the transfer mechanical arm 31 is connected with the sliding track in a sliding manner. A sliding track is arranged at the feeding channel, and the feeding mechanical arm 41 is connected with the sliding track in a sliding manner. So that the transfer robot 31 and the loading robot 41 can be moved quickly by the slide rail.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. Knuckle hot forging side cut automatic production line, including finish forging press (1), side cut press (2), finish forging press (1) fixedly connected with finish forging die, finish forging die includes finish forging mould, finish forging lower mould, the pole portion die cavity of finish forging lower mould is arranged along vertical decurrent direction, side cut press (2) fixedly connected with trimming die (6), trimming die (6) are including side cut upper mould, side cut lower mould, its characterized in that: a transfer channel is arranged between the finish forging press (1) and the trimming press (2), a transfer device (3) is arranged at the position of the transfer channel, a feeding channel is arranged at one side of the finish forging press (1), a feeding device (4) is arranged at the position of the feeding channel, a material returning channel is arranged at one side of the trimming press (2), and a material returning device (5) is arranged at the position of the material returning channel;
the long lug cavity and the short lug cavity of the finish forging die are arranged along the direction of the transfer channel;
the trimming upper die comprises a male die (61) and a discharging plate (62) used for downwards pushing the flash sleeved outside the male die (61) according to instructions;
the feeding device (4) is provided with a feeding mechanical arm (41), and the front end of the feeding mechanical arm (41) is provided with a first clamp used for placing a workpiece into the finish forging lower die through a feeding channel;
the transfer device (3) is provided with a transfer mechanical arm (31), and the front end of the transfer mechanical arm (31) is provided with a second clamp (32) used for transferring the workpiece from the finish forging lower die to the trimming lower die through a transfer channel;
the second clamp (32) comprises a second cylinder frame (321) and a second cylinder (322), one end of the second cylinder frame (321) is connected with the transfer mechanical arm (31), the other end of the second cylinder frame (321) is provided with two fixed connecting rods (323) and a movable connecting rod (324), the two fixed connecting rods (323) are arranged in parallel, the movable connecting rod (324) is positioned between the two fixed connecting rods (323), the middle part of the movable connecting rod (324) is hinged with the middle part of the fixed connecting rod (323), the upper end of the movable connecting rod (324) is hinged with the second cylinder (322), the upper end of the fixed connecting rod (324) is fixedly connected with the second cylinder frame (321), and the lower ends of the movable connecting rod (324) and the fixed connecting rod (323) are three contact points used for outwards opening and abutting against the inner side of a knuckle part;
the material returning device (5) is provided with a material returning mechanical arm (51), and the front end of the material returning mechanical arm (51) is provided with a third clamp (52) for taking out the workpiece and the flash through a material returning channel;
the third clamp (52) comprises a third cylinder frame (521), a third cylinder (522) and a clamp seat (523), the clamp seat (523) is provided with two lug clamps (524) for clamping the lug parts of the steering knuckle, and a material receiving plate (525) for receiving the flash pushed downwards by the discharging plate (62) is arranged on the upper side of the clamp seat (523).
2. The knuckle hot forging trimming automatic production line according to claim 1, wherein: two ear clamp (524) levels stretch out, the middle part of two ear clamp (524) through articulated round pin (526) with clamp seat (523) are connected, the afterbody of two ear clamp (524) is provided with waist round hole respectively, be provided with sliding pin (527) in the waist round hole, sliding pin (527) with the flexible end fixed connection of third cylinder (522).
3. The knuckle hot forging trimming automatic production line according to claim 1, wherein: and a feeding conveyor belt for conveying the workpiece to be processed is arranged on the side surface of the feeding device (4).
4. The knuckle hot forging trimming automatic production line according to claim 1, wherein: and a blanking conveyor belt and a flash collecting box are arranged on the side surface of the trimming and returning device (5).
5. The knuckle hot forging trimming automatic production line according to claim 1, wherein: the transfer channel is provided with a sliding track, and the transfer mechanical arm (31) is connected with the sliding track in a sliding mode.
6. The knuckle hot forging trimming automatic production line according to claim 1, wherein: the feeding channel is provided with a sliding track, and the feeding mechanical arm (41) is connected with the sliding track in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110999679.XA CN113798426B (en) | 2021-08-29 | 2021-08-29 | Automatic production line for hot forging and trimming of knuckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110999679.XA CN113798426B (en) | 2021-08-29 | 2021-08-29 | Automatic production line for hot forging and trimming of knuckle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113798426A true CN113798426A (en) | 2021-12-17 |
| CN113798426B CN113798426B (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110999679.XA Active CN113798426B (en) | 2021-08-29 | 2021-08-29 | Automatic production line for hot forging and trimming of knuckle |
Country Status (1)
| Country | Link |
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| CN (1) | CN113798426B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1428519A2 (en) * | 1985-11-10 | 1988-10-07 | Научно-Исследовательский И Проектно-Технологический Институт Машиностроения | Production line for manufacturing shape-formed articles of cotter pin type for brake device for rolling stock |
| KR20030080099A (en) * | 2001-03-22 | 2003-10-10 | 비숍 이노베이션 리미티드 | Method and apparatus for manufacture of a forged rack |
| CN203585784U (en) * | 2013-12-09 | 2014-05-07 | 中国重汽集团济南动力有限公司 | Knuckle forging line edge trimmer dry oil lubricant pump oil supplementing device |
| CN206824581U (en) * | 2017-05-30 | 2018-01-02 | 徐皓 | A kind of full-automatic non-hardened and tempered steel forging production line |
| CN108339923A (en) * | 2018-02-01 | 2018-07-31 | 湖北三峡职业技术学院 | Manipulator for the automatic roll forging of connecting rod |
| CN108817307A (en) * | 2018-08-17 | 2018-11-16 | 海安金锻工业有限公司 | A kind of automobile control arm forging line and forging and forming technology |
| CN209035383U (en) * | 2018-08-17 | 2019-06-28 | 海安金锻工业有限公司 | A kind of automobile control arm forging line |
| CN111069500A (en) * | 2019-12-26 | 2020-04-28 | 江苏大学 | Automatic device and method for micro-part cold forging forming at high strain rate |
| CN111203505A (en) * | 2020-03-02 | 2020-05-29 | 辽宁五一八内燃机配件有限公司 | Trimming die for crankshaft forging |
| CN111957873A (en) * | 2020-08-31 | 2020-11-20 | 武汉新威奇科技有限公司 | Automatic shaft forging production line and method thereof |
-
2021
- 2021-08-29 CN CN202110999679.XA patent/CN113798426B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1428519A2 (en) * | 1985-11-10 | 1988-10-07 | Научно-Исследовательский И Проектно-Технологический Институт Машиностроения | Production line for manufacturing shape-formed articles of cotter pin type for brake device for rolling stock |
| KR20030080099A (en) * | 2001-03-22 | 2003-10-10 | 비숍 이노베이션 리미티드 | Method and apparatus for manufacture of a forged rack |
| CN203585784U (en) * | 2013-12-09 | 2014-05-07 | 中国重汽集团济南动力有限公司 | Knuckle forging line edge trimmer dry oil lubricant pump oil supplementing device |
| CN206824581U (en) * | 2017-05-30 | 2018-01-02 | 徐皓 | A kind of full-automatic non-hardened and tempered steel forging production line |
| CN108339923A (en) * | 2018-02-01 | 2018-07-31 | 湖北三峡职业技术学院 | Manipulator for the automatic roll forging of connecting rod |
| CN108817307A (en) * | 2018-08-17 | 2018-11-16 | 海安金锻工业有限公司 | A kind of automobile control arm forging line and forging and forming technology |
| CN209035383U (en) * | 2018-08-17 | 2019-06-28 | 海安金锻工业有限公司 | A kind of automobile control arm forging line |
| CN111069500A (en) * | 2019-12-26 | 2020-04-28 | 江苏大学 | Automatic device and method for micro-part cold forging forming at high strain rate |
| CN111203505A (en) * | 2020-03-02 | 2020-05-29 | 辽宁五一八内燃机配件有限公司 | Trimming die for crankshaft forging |
| CN111957873A (en) * | 2020-08-31 | 2020-11-20 | 武汉新威奇科技有限公司 | Automatic shaft forging production line and method thereof |
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| Publication number | Publication date |
|---|---|
| CN113798426B (en) | 2023-08-01 |
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