CN210754944U - Forging forming device for automobile hub - Google Patents
Forging forming device for automobile hub Download PDFInfo
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- CN210754944U CN210754944U CN201921545320.XU CN201921545320U CN210754944U CN 210754944 U CN210754944 U CN 210754944U CN 201921545320 U CN201921545320 U CN 201921545320U CN 210754944 U CN210754944 U CN 210754944U
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Abstract
The utility model relates to a forging forming device of an automobile hub, when manufacturing the automobile hub, a hub blank is heated and then placed in a pre-forging cavity of a pre-forging lower die; the second hydraulic pressure drives the floating die holder to move upwards to the upper part of the lower die holder; the first hydraulic pressure drives the lower die base to move so that the pre-forging cavity is opposite to the upper die core; the second hydraulic cylinder drives the floating die holder to move downwards so that the two separable die rings surround the edge of the pre-forging lower die and are combined with the pre-forging die cavity; the press drives the upper die core to forge and press downwards so as to perform the hub blank; then the second hydraulic drive floating die holder drives the preformed hub to move upwards to the upper part of the lower die holder; the first hydraulic pressure drives the lower die base to move so that the finish forging cavity is opposite to the upper die core; the second hydraulic cylinder drives the floating die holder to move downwards so that the preformed hub is placed in the middle-section die cavity; the press drives the upper die core to forge and press downwards so that the hub blank is finally formed.
Description
Technical Field
The utility model relates to an automobile wheel hub's forging forming device belongs to and forges technical field.
Background
The forming method of automobile aluminum-magnesium light alloy wheel hub mainly includes spin casting method and spin forging method. Namely a casting and spinning method and a forging and spinning method. The forged hub is significantly superior to a cast hub in weight reduction, dimensional accuracy, strength, toughness, fatigue life, and the like. With the increasing urgent demands for light weight, high speed, safety and the like of automobiles, forged hubs are bound to become upgraded and updated products of cast hubs, and have great market prospects. Although the hub manufactured by adopting the rotary forging method has good organization and mechanical property, the hub manufactured by adopting the rotary forging method has the problems of complex production process, multiple working procedures, low efficiency, high cost, more required equipment, large investment and the like, and can not well meet the requirement of industrial production.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide an automobile wheel hub's forging forming device can conveniently forge automobile wheel hub.
In order to achieve the above object, the utility model provides a forging forming device of automobile wheel hub adopts following technical scheme: a forging forming device for an automobile hub comprises an upper die holder and a lower die holder, wherein an upper die core is arranged on the upper die holder and can move up and down under the driving of a press; the lower die base is provided with a pre-forging lower die and a finish-forging lower die, the pre-forging lower die is provided with a pre-forging cavity used for pre-forming a hub blank, and the finish-forging lower die is provided with a finish-forging cavity used for finish-forming the hub blank; the lower die base is driven by a first hydraulic cylinder to enable the pre-forging lower die to be opposite to the upper die core or enable the finish-forging lower die to be opposite to the upper die core; a floating die holder is further arranged between the upper die holder and the lower die holder, the floating die holder is mounted on the lower die holder through a second hydraulic cylinder, and the second hydraulic cylinder can drive the floating die holder to move up and down; the floating die holder is provided with two oppositely arranged die-separating rings, the two die-separating rings are driven by a third hydraulic cylinder to move respectively, the third hydraulic cylinder is connected to the floating die holder, and when the pre-forging lower die or the finish forging lower die is opposite to the upper die core, the two die-separating rings surround the edge of the pre-forging lower die or the finish forging lower die.
Preferably, the lower die holder is further provided with a guide column, and the floating die holder is in sliding connection with the guide column.
Preferably, the outer side of the upper mold core is provided with a demolding ring, a compression spring is arranged between the demolding ring and the upper mold base, and two ends of the compression spring are respectively abutted against the upper mold base and the demolding ring.
More preferably, the upper die holder is further provided with a guide rod, and the demoulding ring is in sliding connection with the guide rod.
More preferably, the compression spring is a disc spring.
Preferably, a plurality of second hydraulic cylinders are installed on the lower die base.
Preferably, the floating die holder is provided with two mechanical arms, each mechanical arm is connected with one separable die ring, each mechanical arm is driven by a third hydraulic cylinder, and the two mechanical arms can fold or separate the two separable die rings.
Preferably, the press is any one of a hot die forging press, a screw press, a friction press and a hydraulic press.
With the utility model discloses an automobile wheel hub's forging forming device correspondingly, the utility model also provides an automobile wheel hub's forging forming device's application method utilizes above-mentioned technical scheme or its arbitrary preferred technical scheme automobile wheel hub's forging forming device carry out the operation, include following step:
1) placing the heated hub blank in the pre-forging cavity, and driving the floating die holder to ascend to a position above the lower die holder by the second hydraulic cylinder;
2) at the moment, the first hydraulic cylinder pushes the lower die base to a position where the pre-forging cavity of the pre-forging lower die is opposite to the upper die core, the second hydraulic cylinder drives the floating die base to descend, and the third hydraulic cylinder drives the separable die ring and the pre-forging cavity of the pre-forging lower die to form a lower cavity;
3) the forging press drives the upper die core to forge and press the hub blank, so that the hub blank is forced to deform and flow and quickly fill a cavity formed by the upper die core and the pre-forging cavity, and the hub pre-forging piece is obtained;
4) the second hydraulic cylinder drives the floating die holder and the separable die ring to ascend, and the first hydraulic cylinder drives the lower die holder to move so that the finish forging cavity of the finish forging lower die is opposite to the upper die core;
5) the second hydraulic cylinder drives the floating die holder and the die-separable ring to descend together, and the die-separable ring and a finish forging die cavity on the finish forging lower die form a lower die cavity;
6) the forging press drives the upper die core to forge and press the hub pre-forging piece, so that the hub pre-forging piece is forced to deform and flow and fill a cavity formed by the upper die core and the finish forging lower die, and the hub finish forging piece is obtained;
7) the second hydraulic cylinder drives the floating die holder to descend, and the separable die ring is seated on the outer edge of the finish forging lower die and is ejected out of the floating die holder;
8) and the third hydraulic cylinder drives the separable die rings to separate, and the formed hub final forging piece between the separable die rings is taken out.
As above, the utility model relates to a forging forming device of automobile wheel hub has following beneficial effect: when the forging and forming device for the automobile hub is used for manufacturing the automobile hub, a hub blank is heated and then placed in a pre-forging cavity of a pre-forging lower die; the second hydraulic pressure drives the floating die holder to move upwards to the upper part of the lower die holder; the first hydraulic pressure drives the lower die base to move so that the pre-forging cavity is opposite to the upper die core; the second hydraulic cylinder drives the floating die holder to move downwards so that the two separable die rings surround the edge of the pre-forging lower die and are combined with the pre-forging die cavity; the press drives the upper die core to forge and press downwards so as to perform the hub blank; then the second hydraulic drive floating die holder drives the preformed hub to move upwards to the upper part of the lower die holder; the first hydraulic pressure drives the lower die base to move so that the finish forging cavity is opposite to the upper die core; the second hydraulic cylinder drives the floating die holder to move downwards so that the preformed hub is placed in the middle-section die cavity; the press drives the upper die core to forge and press downwards so that the hub blank is finally formed. Therefore, the utility model discloses an automobile wheel hub's forging forming device can conveniently forge automobile wheel hub, and production efficiency is high.
Drawings
Fig. 1 shows that the utility model discloses an automobile wheel hub's forging forming device's section structure schematic diagram.
Fig. 2 shows that the utility model discloses a forging forming device's of automobile wheel hub top view, upper die base and last mould core do not show.
Description of the element reference numerals
1 Upper die base
2 lower die holder
3 mould core
4 preforging lower die
5 finish forging lower die
6 preforging die cavity
7 finish forging die cavity
8 first hydraulic cylinder
9 floating die holder
10 second hydraulic cylinder
11 separable mould ring
12 third hydraulic cylinder
13 guide post
14 demoulding ring
15 compression spring
16 guide rod
17 mechanical arm
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure herein.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1 and 2, the utility model provides a forging and forming device for automobile wheel hubs, which comprises an upper die holder 1 and a lower die holder 2, wherein an upper die core 3 is arranged on the upper die holder 1, and the upper die core 3 is driven by a press machine to move up and down; the lower die base 2 is provided with a preforging lower die 4 and a finish forging lower die 5, the preforging lower die 4 is provided with a preforging cavity 6 for performing a hub blank, and the finish forging lower die 5 is provided with a finish forging cavity 7 for performing finish forming on the hub preforging; the lower die base 2 is driven by a first hydraulic cylinder 8 to enable the pre-forging lower die 4 to be over against the upper die core 3 or enable the finish-forging lower die 5 to be over against the upper die core 3; a floating die holder 9 is further arranged between the upper die holder 1 and the lower die holder 2, the floating die holder 9 is mounted on the lower die holder 2 through a second hydraulic cylinder 10, and the second hydraulic cylinder 10 can drive the floating die holder 9 to move up and down; the floating die holder 9 is provided with two separable die rings 11 which are oppositely arranged, the two separable die rings 11 are driven by a third hydraulic cylinder 12 respectively to move, the third hydraulic cylinder 12 is connected to the floating die holder 9, and when the pre-forging lower die 4 or the finish forging lower die 5 is opposite to the upper die core 3, the two separable die rings 11 surround the edge of the pre-forging lower die 4 or the finish forging lower die 5.
When the forging and forming device for the automobile hub is used for manufacturing the automobile hub, a hub blank is heated and then placed in the pre-forging cavity 6 of the pre-forging lower die 4; the second hydraulic drive floating die holder 9 moves upwards to the upper part of the lower die holder 2; the first hydraulic pressure drives the lower die holder 2 to move so that the pre-forging cavity 6 is opposite to the upper die core 3; the second hydraulic cylinder 10 drives the floating die holder 9 to move downwards so that the two die-separable rings 11 surround the edge of the lower pre-forging die 4 and are combined with the pre-forging die cavity 6; the press drives the upper die core 3 to forge and press downwards so as to preform the hub blank; then the second hydraulic drive floating die holder 9 drives the preformed hub to move upwards to the upper part of the lower die holder 2; the first hydraulic pressure drives the lower die holder 2 to move so that the finish forging cavity 7 is opposite to the upper die core 3; the second hydraulic cylinder 10 drives the floating die holder 9 to move downwards so that the preformed hub is placed in the middle die cavity; the press drives the upper die core 3 to forge and press downwards so that the hub pre-forging piece is finally formed. Therefore, the utility model discloses an automobile wheel hub's forging forming device can conveniently forge automobile wheel hub, and production efficiency is high.
In the forging forming device for the automobile hub, the separable die ring 11 is fixed with the floating die holder 9 in the forging process, and can be separated from the floating die holder 9 after the forging is finished, the bottom shape of the upper die core 3 is matched with the bottom inner side shape of the hub, the side shape of the upper die core 3 is matched with the inner side rim shape of the separable die ring 11, the shapes of the pre-forging lower die 4 and the final-forging lower die 5 are matched with the bottom shape of the hub, in the forging process, the separable die ring 11 is movably connected with the outer edge of the pre-forging lower die 4 or the final-forging lower die 5, the floating die holder 9 can slide up and down along the guide post 13 under the driving of the second hydraulic cylinder 10, the outer side of the upper die core 3 is provided with the demoulding ring 14, a compression spring 15 is arranged between the demoulding ring 14 and the upper die holder 1, as shown in figure 1, a disc spring can be used as the compression spring 15, two ends of the compression spring 15 respectively abut against the, after the press forges the hub blank, the compression spring 15 urges the stripper ring 14 downward to disengage the hub preform from the upper core 3. The demoulding ring 14 consists of an upper mould pressing ring and a mould core fixing plate, the upper mould pressing ring is fixed on the mould core fixing plate, and the mould core fixing plate is fixed on the upper mould base 1. As a preferred embodiment, as shown in fig. 1, the upper die holder 1 is further provided with a guide rod 16, and the stripper ring 14 is slidably connected with the guide rod 16, so that the stripper ring 14 can be smoothly slid up and down along the guide rod 16.
Before forging and pressing the hub blank, heating the blank and placing the blank in a pre-forging cavity 6 of a pre-forging lower die 4, wherein two mechanical arms 17 are arranged on a floating die holder 9, each mechanical arm 17 is connected with one die-separating ring 11, each mechanical arm 17 is driven by a third hydraulic cylinder 12, and the two mechanical arms 17 can fold or separate the two die-separating rings 11. When the pre-forging is carried out, the mechanical arm 17 pushes the two separable die rings 11 to the middle of the floating die holder 9, the floating die holder 9 drives the separable die rings 11 to ascend under the pushing of the second hydraulic cylinder 10, at the moment, the lower die holder 2 pushes the pre-forging lower die 4 to the position right facing the upper die core 3 under the driving of the first hydraulic cylinder 8, and the second hydraulic cylinder 10 drives the floating die holder 9 to drive the two separable die rings 11 to descend and be combined with the pre-forging die cavity 6 of the pre-forging lower die 4 to serve as a die cavity of the pre-forging hub blank. The forging press drives the upper die core 3 to forge and press the blank, the blank is forced to deform and flow and is quickly filled in a cavity formed by the upper die core 3 and the lower pre-forging die 4, then a wheel hub pre-forging piece can be obtained, the floating die holder 9 drives the two separable die rings 11 to ascend under the action of the second hydraulic cylinder 10, at the moment, the lower die holder 2 pushes the lower final-forging die 5 to a position opposite to the upper die core 3 under the action of the first hydraulic cylinder 8, and the second hydraulic cylinder 10 drives the floating die holder 9 to drive the two separable die rings 11 and the pre-formed wheel hub pre-forging piece to descend together and place the wheel hub pre-forging piece in a final-forging cavity 7 of the lower final. The forging press drives the upper die core 3 to forge and press the hub pre-forging piece, the hub pre-forging piece is forced to deform and flow and is filled in a cavity formed by the upper die core 3 and the finish forging lower die 5, a hub finish forging piece can be obtained, then the floating die holder 9 descends along a guide pillar under the driving of the second hydraulic cylinder 10, the two separable die rings 11 are located on the outer edge of the finish forging lower die 5 and are ejected out of the floating die holder 9, the hub finish forging piece is located between the two separable die rings 11, the two separable die rings 11 are separated through the mechanical arm 17, and the formed hub forging piece can be taken out smoothly. The utility model discloses an automobile wheel hub's forging forming device has advantages such as simple process, forging defect are few, the yield is high, production efficiency is high, required equipment is few, with low costs, be fit for mass production, has application prospect. The technical scheme of the utility model utilize the pushing down of last mold core 3 to force the blank to warp and flow and be full of the die cavity of compriseing last mold core 3 and divisible mould circle 11 and preforging lower mould 4/finish forging lower mould 5 fast.
In order to enable the floating die holder 9 to smoothly and stably move up and down, as a preferred embodiment, as shown in fig. 1, the lower die holder 2 is further provided with a guide post 13, and the floating die holder 9 is slidably connected with the guide post 13. Thus, the floating die holder 9 can slide smoothly under the guiding action of the guide posts 13. In order to enable the floating die holder 9 to be stressed uniformly and move stably, a plurality of second hydraulic cylinders 10 are installed on the lower die holder 2, and the second hydraulic cylinders 10 are uniformly supported at the bottom of the floating die holder 9.
The utility model discloses an among automobile wheel hub's the forging forming device, mold core 3 carries out the forging and pressing to hub blank or preforming spare on the press drive, as an preferred embodiment, the press is arbitrary one in hot die forging press, screw press, friction press, the hydraulic press. Preferably, the hub blank is a casting blank, an extrusion blank or a forging blank obtained by preforming, and the hub blank is made of aluminum alloy magnesium alloy or titanium alloy.
With the utility model discloses an automobile wheel hub's forging forming device correspondingly, the utility model also provides an automobile wheel hub's forging forming device's application method utilizes above-mentioned technical scheme or its arbitrary preferred technical scheme automobile wheel hub's forging forming device carry out the operation, include following step:
1) placing the heated hub blank in the pre-forging cavity 6, and driving the floating die holder 9 to ascend to a position above the lower die holder 2 by the second hydraulic cylinder 10;
2) at the moment, the lower die base 2 is pushed to a position where the pre-forging cavity 6 of the pre-forging lower die 4 is opposite to the upper die core 3 by the first hydraulic cylinder 8, the second hydraulic cylinder 10 drives the floating die base 9 to descend, and the third hydraulic cylinder 12 drives the die parting ring 11 and the pre-forging cavity 6 of the pre-forging lower die 4 to form a lower cavity;
3) the forging press drives the upper die core 3 to forge and press the hub blank, so that the hub blank is forced to deform and flow and quickly fill a cavity formed by the upper die core 3 and the pre-forging cavity 6, and the hub pre-forging piece is obtained;
4) the second hydraulic cylinder 10 drives the floating die holder 9 and the separable die ring 11 to ascend, and the first hydraulic cylinder 8 drives the lower die holder 2 to move so that the finish forging cavity 7 of the finish forging lower die 5 is opposite to the upper die core 3;
5) the second hydraulic cylinder 10 drives the floating die holder 9 and the die-separable ring 11 to descend together, and the die-separable ring 11 and the finish forging die cavity 7 on the finish forging lower die 5 form a lower die cavity;
6) the forging press drives the upper die core 3 to forge and press the hub pre-forging piece, so that the hub pre-forging piece is forced to deform and flow and fill a cavity formed by the upper die core 3 and the finish forging lower die 5, and the hub finish forging piece is obtained;
7) the second hydraulic cylinder 10 drives the floating die holder 9 to descend, and the separable die ring 11 is seated on the outer edge of the finish forging lower die 5 and is ejected out of the floating die holder 9;
8) the third hydraulic cylinder 12 drives the split mold rings 11 to separate and take out the formed hub final forging piece between the split mold rings 11.
Based on the technical scheme of above-mentioned embodiment, the utility model discloses an automobile wheel hub's forging forming device can conveniently forge automobile wheel hub, and production efficiency is high. The hub is formed by one-time heating forging, and the hub forging die has the advantages of simple process, few forging defects, high yield, high production efficiency, few required equipment, low cost, suitability for mass production and the like. The utility model discloses an automobile wheel hub's forging forming device forges the shaping through once heating and can make the inside good stress strain state that forms of forging, makes the fine and close mechanical properties of wheel hub internal organization good, and the forging wheel hub intensity that obtains is high, and toughness is good, fatigue life is long, and mechanical properties is superior to casting wheel hub. Under same service condition, the utility model discloses an automobile wheel hub's forging forming device can show the weight that reduces wheel hub, reduces energy resource consumption. The utility model discloses a wheel hub's that forging forming device of automobile wheel hub made spoke shape of wheel hub can obtain the various pleasing to the eye magnificent spoke shape of molding through subsequent machining, extensive applicability, customization nature is good.
To sum up, the utility model has the characteristics of being different from prior art, utensil high industry value of utilizing.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. It will be apparent to those skilled in the art that modifications and variations can be made to the above-described embodiments without departing from the spirit and scope of the invention, and it is intended that all equivalent modifications and variations be covered by the appended claims without departing from the spirit and scope of the invention.
Claims (8)
1. A forging forming device for automobile hubs is characterized by comprising an upper die holder and a lower die holder, wherein an upper die core is arranged on the upper die holder and can move up and down under the driving of a press machine; the lower die base is provided with a pre-forging lower die and a finish-forging lower die, the pre-forging lower die is provided with a pre-forging cavity used for pre-forming a hub blank, and the finish-forging lower die is provided with a finish-forging cavity used for finish-forming the hub blank; the lower die base is driven by a first hydraulic cylinder to enable the pre-forging lower die to be opposite to the upper die core or enable the finish-forging lower die to be opposite to the upper die core; a floating die holder is further arranged between the upper die holder and the lower die holder, the floating die holder is mounted on the lower die holder through a second hydraulic cylinder, and the second hydraulic cylinder can drive the floating die holder to move up and down; the floating die holder is provided with two oppositely arranged die-separating rings, the two die-separating rings are driven by a third hydraulic cylinder to move respectively, the third hydraulic cylinder is connected to the floating die holder, and when the pre-forging lower die or the finish forging lower die is opposite to the upper die core, the two die-separating rings surround the edge of the pre-forging lower die or the finish forging lower die.
2. The forging forming device for automobile hubs according to claim 1, wherein: the lower die base is further provided with a guide column, and the floating die base is connected with the guide column in a sliding mode.
3. The forging forming device for automobile hubs according to claim 1, wherein: the outer side of the upper mold core is provided with a demolding ring, a compression spring is arranged between the demolding ring and the upper mold base, and two ends of the compression spring are respectively abutted against the upper mold base and the demolding ring.
4. The forging forming device for automobile hubs according to claim 3, wherein: the upper die base is further provided with a guide rod, and the demoulding ring is connected with the guide rod in a sliding mode.
5. The forging forming device for automobile hubs according to claim 3, wherein: the compression spring is a disc spring.
6. The forging forming device for automobile hubs according to claim 1, wherein: and a plurality of second hydraulic cylinders are arranged on the lower die base.
7. The forging forming device for automobile hubs according to claim 1, wherein: the floating die holder is provided with two mechanical arms, each mechanical arm is connected with one separable die ring, each mechanical arm is driven by one third hydraulic cylinder, and the two mechanical arms can fold or separate the two separable die rings.
8. The forging forming device for automobile hubs according to claim 1, wherein: the press machine is any one of a hot die forging press machine, a screw press machine, a friction press machine and a hydraulic press machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921545320.XU CN210754944U (en) | 2019-09-16 | 2019-09-16 | Forging forming device for automobile hub |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921545320.XU CN210754944U (en) | 2019-09-16 | 2019-09-16 | Forging forming device for automobile hub |
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| CN210754944U true CN210754944U (en) | 2020-06-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112872274A (en) * | 2020-08-30 | 2021-06-01 | 郎溪友良锻造铝合金轮毂股份有限公司 | Wheel hub mould |
| CN112893745A (en) * | 2020-12-04 | 2021-06-04 | 郎溪友良锻造铝合金轮毂股份有限公司 | Go up mould subassembly, lower mould subassembly and wheel hub backward extrusion mould |
| CN113000757A (en) * | 2021-04-23 | 2021-06-22 | 郎溪友良锻造铝合金轮毂股份有限公司 | Forging method for automobile aluminum alloy hub |
| CN113000761A (en) * | 2021-04-23 | 2021-06-22 | 郎溪友良锻造铝合金轮毂股份有限公司 | Multi-station forging device for automobile aluminum alloy hub |
| CN115041619A (en) * | 2022-07-19 | 2022-09-13 | 倪一夫 | Precision forging machine |
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2019
- 2019-09-16 CN CN201921545320.XU patent/CN210754944U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112872274A (en) * | 2020-08-30 | 2021-06-01 | 郎溪友良锻造铝合金轮毂股份有限公司 | Wheel hub mould |
| CN112893745A (en) * | 2020-12-04 | 2021-06-04 | 郎溪友良锻造铝合金轮毂股份有限公司 | Go up mould subassembly, lower mould subassembly and wheel hub backward extrusion mould |
| CN113000757A (en) * | 2021-04-23 | 2021-06-22 | 郎溪友良锻造铝合金轮毂股份有限公司 | Forging method for automobile aluminum alloy hub |
| CN113000761A (en) * | 2021-04-23 | 2021-06-22 | 郎溪友良锻造铝合金轮毂股份有限公司 | Multi-station forging device for automobile aluminum alloy hub |
| WO2022222344A1 (en) * | 2021-04-23 | 2022-10-27 | 郎溪友良锻造铝合金轮毂股份有限公司 | Multi-station forging apparatus for automobile aluminum alloy wheel hub |
| CN115041619A (en) * | 2022-07-19 | 2022-09-13 | 倪一夫 | Precision forging machine |
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