CN103302220A - One-step forging forming device and method of automobile hubs - Google Patents
One-step forging forming device and method of automobile hubs Download PDFInfo
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- CN103302220A CN103302220A CN2013102760955A CN201310276095A CN103302220A CN 103302220 A CN103302220 A CN 103302220A CN 2013102760955 A CN2013102760955 A CN 2013102760955A CN 201310276095 A CN201310276095 A CN 201310276095A CN 103302220 A CN103302220 A CN 103302220A
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Abstract
The invention discloses a one-step forging forming device and method of automobile hubs. The device comprises an integral upper die and a split lower die, wherein the bottom shape of the integral upper die is matched with the inner side shape of the bottom of a hub, and the side face shape of the integral upper die is matched with the shape of the hub; the split lower die is composed of 2-4 side skirt plates and a lower die plate, and the side skirt plates are movably connected with the outer edge of the lower die plate; an open hole is formed in the middle of the lower die plate, and an ejection rod is arranged in the open hole; the integral upper die is connected with a forging press. A pre-heated blank is put on the lower die plate of the device, the forging press drives the integral upper die to forge and press the blank to cause the blank to deform and flow and quickly fill a cavity formed by the integral upper die and the split lower die, and finally a hub forge piece can be obtained. The device and the method have the advantages of simple process, less working procedures, high production efficiency, less needed equipment, low cost and the like, is suitable for mass production and has an application prospect.
Description
Technical field
The present invention relates to a kind of one step of automotive hub forging and molding device and use this device to carry out the method for one step of wheel hub forging and molding, belong to material forging technology field.
Background technology
The manufacturing process of light-alloy wheel hubs such as automobile aluminium, magnesium mainly contains casting and forging method.Forged hub all significantly is better than casting hub at aspects such as loss of weight, dimensional accuracy, intensity, toughness and fatigue lives.Along with automobile lightweight, urgent day by day with demand such as safety at a high speed, forged hub will become the upgraded product of steel wheel hub and casting hub, has huge market prospects.In order to obtain the forged hub of mechanical property excellence efficiently, economically, people have proposed a lot of new method and apparatus, for example, Zhang Hongwei, Niu Zhanxian, Wang Xiuhua etc. are shaped wheel hub by operations such as batching, melting, semi-continuous casting, extruding, flat-die forging, die forging, solution treatment, studied the Forging Technology that improves 2A14 aluminium alloy wheel hub forging mechanical property (Zhang Hongwei, Niu Zhanxian, Wang Xiuhua etc. improve Forging Technology [J] the light-alloy process technology of 2A14 aluminium alloy wheel hub forging mechanical property, 2006,34 (5): 31-34.); Zhang Zhimin, Wang Qiang, Li Baocheng etc. have proposed a kind of magnesium alloy auto hub casting and have squeezed combined shaping method, adopt operations such as casting ingot, preform, upsetting extrusion, isothermal extruding and finishing shape to make wheel hub shaping (Zhang Zhimin, Wang Qiang, Li Baocheng etc. combined shaping method is squeezed in the magnesium alloy auto hub casting. China, ZL03100893.3[P] .2006-04-26); Wang Delin adopt operations such as blanking, homogenising processing, scale removal, punching, preform, surface treatment, bottom shaping, surface treatment, flange, cold shaping make wheel hub be shaped (Wang De woods .AZ31 magnesium alloy Car Hub Warm Forming technical study [D]. Taiyuan: Northcentral University's Master's thesis, 2005. 42-43 pages or leaves .); Zhang Zhimin, Wang Qiang, open magnitude and proposed a kind of labor-saving automobile hub forming method and device, adopt operations such as casting ingot, homogenising processing, preform base, oppositely extruding, upsetting squeeze front wheel felloe, enlarging flange rear rim to make wheel hub shaping (Zhang Zhimin, Wang Qiang, open magnitude. a kind of labor-saving automobile hub forming method and device. China, ZL200610012829.9[P] .2009-04-08); Xu Guoxing has proposed a kind of forging mold of aluminium alloy wheel hub of vehicle, operations such as employing is got the raw materials ready, cleaning, heat tracing, jumping-up, mould and die preheating, finish-forging make wheel hub be shaped (Xu Guoxing. the forging mold of aluminium alloy wheel hub of vehicle. China, ZL200710132396.5[P] .2009-08-26), but the structure of the wheel rim that is not shaped in its mould, the tonnage of its device therefor also is not enough to forge wheel rim; Sun Huixue and Wang Yixiang have proposed a kind of processing method of aluminium alloy wheel hub, adopt operations such as thixotropic forming base, remelting heating, Closed Extrusion, forging enlarging, spinning wheel rim to make wheel hub shaping (Sun Huixue, Wang Yixiang. a kind of processing method of aluminium alloy wheel hub. China, ZL201010242759.2[P] .2012-07-25).Though the wheel hub that said method is made has good organization and mechanical property, all there is complex manufacturing, operation is many, efficient is low, cost is high, equipment needed thereby is more, investment problem such as big, can not satisfy the suitability for industrialized production requirement well.
Summary of the invention
The problems referred to above at the prior art existence, the present invention aims to provide a kind of one step of automotive hub forging and molding device and method, one step of realization forges the automotive hub that cost is low, mechanical property is excellent, to satisfy the requirement of industrialized mass production high-performance, low-cost automotive hub better.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of one step of automotive hub forging and molding device comprises whole patrix and split counterdie, and it is characterized in that: the bottom inside shape of the bottom shape of described whole patrix and wheel hub is suitable, and the side view of described whole patrix and wheel rim shape are suitable; Described split counterdie is made up of 2～4 blocks of gusset plates and lower bolster, and described gusset plate all flexibly connects with the outer rim of lower bolster; And the centre position at described lower bolster is provided with perforate, is provided with ejector beam in described perforate; Described whole patrix is connected with forging press.
As a kind of preferred version, be provided with exhaust clearance in the outer rim of lower bolster and the connecting portion of gusset plate.
As a kind of preferred version, described whole patrix and/or split counterdie also are connected with humidity control system.
Described forging press includes but not limited to hotdie forging press, fly press, friction press, hydraulic press.
A kind of method of using device of the present invention to carry out one step of wheel hub forging and molding, comprise the steps: pre-warmed blank is placed on the lower bolster of described device, making forging press drive whole patrix forges and presses blank, force blank deformation to flow and also be full of the die cavity of being formed by whole patrix and split counterdie fast, thereby obtain hub forgeable piece.
Described blank can be casting ingot or extrusion billet, also can be the forging blank that obtains by preform; The material of described blank can be aluminium alloy, magnesium alloy or titanium alloy, also can be other alloy material.
Compared with prior art, the present invention has following beneficial effect:
1) the present invention utilizes pressing down of whole patrix to force blank deformation to flow and is full of the die cavity of being made up of whole patrix and split counterdie fast, realize one step of wheel hub forging and molding, had advantages such as technology is simple, operation is few, production efficiency is high, equipment needed thereby is few, cost is low, suitable production in enormous quantities;
2) the present invention can make the good stress-strain state of the inner formation of forging by a step forging and molding, makes the wheel hub interior tissue fine and closely woven, and mechanical property is good;
3) the present invention is the forged hub intensity height, good toughness, the fatigue life that obtain long, and mechanical property significantly is better than casting hub, and under same service condition, the present invention can significantly reduce the weight of wheel hub, the reduction energy resource consumption;
4) spoke of wheel hub obtains by follow-up machined among the present invention, can obtain various shapes, luxurious wheel hub attractive in appearance like this, and applicability is wide, and customization is good;
5) device provided by the invention also has simple in structurely, cheap for manufacturing cost, easy and simple to handle, advantage such as easily is automated, and also can be applicable to produce other annular and disk-shaped part simultaneously, has good industrial application value.
Description of drawings
Fig. 1 is the structural representation of one step of a kind of automotive hub forging and molding device of the present invention;
Fig. 2 is to use device of the present invention blank to be carried out the schematic diagram of a step forging and molding.
Among the figure: 1, whole patrix; 2, gusset plate; 3, lower bolster; 4, ejector beam; 5, blank; 6, hub forgeable piece.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further set forth the present invention.Should be understood that these embodiment only are used for explanation the present invention and unrestricted protection scope of the present invention.
As shown in Figure 1: a kind of one step of automotive hub forging and molding device provided by the invention, comprise: whole patrix 1 and split counterdie, the bottom inside shape of the bottom shape of described whole patrix 1 and wheel hub is suitable, and the side view of described whole patrix 1 and wheel rim shape are suitable; Described split counterdie is made up of 2～4 blocks of gusset plates 2 and lower bolster 3, and described gusset plate 2 all flexibly connects with the outer rim of lower bolster 3; And the centre position at described lower bolster 3 is provided with perforate, is provided with ejector beam 4 in described perforate; Described whole patrix 1 is connected with the forging press (not shown).
As a kind of preferred version, be provided with exhaust clearance in the outer rim of lower bolster 3 and the connecting portion of gusset plate 2.
As a kind of preferred version, described whole patrix 1 and/or split counterdie also are connected with humidity control system.
Described forging press includes but not limited to hotdie forging press, fly press, friction press, hydraulic press.
Use device of the present invention to carry out the method for one step of wheel hub forging and molding, comprise the steps: pre-warmed blank 5 is placed on the lower bolster 3 of described device, making forging press drive 1 pair of blank 5 of whole patrix forges and presses, force blank 5 distortion to be flowed and also be full of the die cavity of being formed by whole patrix 1 and split counterdie fast, thereby obtain hub forgeable piece 6.
Use forge aluminium alloy wheel hub of vehicle one step of device of the present invention:
Adopting diameter is that the 6061 aluminium alloy bars of 400mm are as blank, 6061 aluminum alloy blanks 5 when being heated to 480 ℃ are placed on the lower bolster 3 of described forging apparatus, using 12500 tons of electric screw press (not shown)s to drive 1 pair of blank 5 of whole patrix forges and presses, force blank 5 distortion to be flowed and also be full of the die cavity of being formed by whole patrix 1 and split counterdie fast, thereby obtain hub forgeable piece 6.
Behind the wheel hub forging and molding, whole patrix 1 is risen, make gusset plate 2 more separately, use ejector beam 4 to eject hub forgeable piece 6.The spoke of wheel hub obtains by follow-up machined.
The hub forgeable piece that present embodiment is obtained compares with adopting the resulting wheel hub of conventional low casting, investigates its internal soundness and mechanical property, and comparative result is as shown in table 1 in detail.
The internal soundness of table 1 wheel hub and mechanical property are relatively
| Sample | Grain size | Fatigue life |
| The wheel hub that adopts the conventional low casting to obtain | 4 grades | 8×10 5 |
| The hub forgeable piece that present embodiment obtains | 7 grades | 7×10 8 |
By table 1 as seen: there is big defective in the wheel hub that adopts the conventional low casting to obtain, and inner grain size is inhomogeneous, and fatigue life is short; And adopt forging apparatus of the present invention and the resulting wheel hub internal flaw of method to eliminate, and crystal grain has produced refinement, and grain size is more even, and fatigue life is long.
Use forge the automobile magnesium alloy hub one step of device of the present invention:
Adopting diameter is that the AZ80 magnesium alloy bar of 400mm is as blank, AZ80 magnesium alloy blank 5 when being heated to 400 ℃ is placed on the lower bolster 3 of described forging apparatus, using 12500 tons of electric screw press (not shown)s to drive 1 pair of blank 5 of whole patrix forges and presses, force blank 5 distortion to be flowed and also be full of the die cavity of being formed by whole patrix 1 and split counterdie fast, thereby obtain hub forgeable piece 6.Adopt humidity control system that split counterdie temperature is controlled at 350 ℃～400 ℃ in the forging process.
Behind the wheel hub forging and molding, whole patrix 1 is risen, make gusset plate 2 more separately, use ejector beam 4 to eject hub forgeable piece 6.The spoke of wheel hub obtains by follow-up machined.
The hub forgeable piece that present embodiment is obtained compares with adopting the resulting wheel hub of conventional low casting, investigates its internal soundness and mechanical property, and comparative result is as shown in table 2 in detail.
The internal soundness of table 2 wheel hub and mechanical property are relatively
| Sample | Grain size | Fatigue life |
| The wheel hub that adopts the conventional low casting to obtain | 5 |
2×10 5 |
| The hub forgeable piece that present embodiment obtains | 7 |
5×10 7 |
By table 2 as seen: there is big defective in the wheel hub that adopts the conventional low casting to obtain, and inner grain size is inhomogeneous, and fatigue life is short; And adopt forging apparatus of the present invention and the resulting wheel hub internal flaw of method to eliminate, and crystal grain has produced refinement, and grain size is more even, and fatigue life is long.
In sum: the present invention utilizes pressing down of whole patrix to force blank deformation to flow and is full of the die cavity of being made up of whole patrix and split counterdie fast, realized the automotive hub of a low-cost step forging and molding mechanical property excellence, have advantages such as technology is simple, operation is few, production efficiency is high, equipment needed thereby is few, cost is low, suitable production in enormous quantities, be fit to the requirement of industrialized mass production high-performance, low-cost automotive hub, have application prospect.
Claims (8)
1. one step of an automotive hub forging and molding device comprises whole patrix and split counterdie, and it is characterized in that: the bottom inside shape of the bottom shape of described whole patrix and wheel hub is suitable, and the side view of described whole patrix and wheel rim shape are suitable; Described split counterdie is made up of 2～4 blocks of gusset plates and lower bolster, and described gusset plate all flexibly connects with the outer rim of lower bolster; And the centre position at described lower bolster is provided with perforate, is provided with ejector beam in described perforate; Described whole patrix is connected with forging press.
2. one step of automotive hub forging and molding device as claimed in claim 1 is characterized in that: be provided with exhaust clearance in the outer rim of lower bolster and the connecting portion of gusset plate.
3. automotive hub one as claimed in claim 1 goes on foot the forging and molding device, and it is characterized in that: described whole patrix and/or split counterdie also are connected with humidity control system.
4. automotive hub one as claimed in claim 1 goes on foot the forging and molding device, and it is characterized in that: described forging press is selected from any one in hotdie forging press, fly press, friction press, the hydraulic press.
5. a right to use requires 1 described device to carry out the method for one step of wheel hub forging and molding, it is characterized in that, comprise the steps: pre-warmed blank is placed on the lower bolster of described device, making forging press drive whole patrix forges and presses blank, force blank deformation to flow and also be full of the die cavity of being formed by whole patrix and split counterdie fast, thereby obtain hub forgeable piece.
6. method as claimed in claim 5 is characterized in that: described blank is the forging blank that casting ingot, extrusion billet or preform obtain.
7. method as claimed in claim 5, it is characterized in that: described blank is the alloy material.
8. method as claimed in claim 7, it is characterized in that: described alloy is aluminium alloy, magnesium alloy or titanium alloy.
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| CN201310276095.5A CN103302220B (en) | 2013-07-03 | 2013-07-03 | A kind of automotive hub one step forge forming device and method |
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| CN201310276095.5A CN103302220B (en) | 2013-07-03 | 2013-07-03 | A kind of automotive hub one step forge forming device and method |
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| CN103302220B CN103302220B (en) | 2015-08-19 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815922A (en) * | 2015-03-23 | 2015-08-05 | 刘兴军 | Magnesium alloy vehicle hub molding device and molding process |
| CN105268903A (en) * | 2015-11-04 | 2016-01-27 | 浙江巨科实业股份有限公司 | Forging forming method of aluminum alloy hub |
| CN105397011A (en) * | 2015-12-24 | 2016-03-16 | 镇江奥兰迪汽车部件有限公司 | Wheel hub forging mold |
| CN108372214A (en) * | 2018-01-25 | 2018-08-07 | 杭州雷迪克节能科技股份有限公司 | Hub unit flange micro-flaw improves and detection method |
| CN109093050A (en) * | 2018-09-20 | 2018-12-28 | 宁波宝通轮业有限公司 | A kind of forging mold and its forging method of aluminium alloy wheel hub |
| CN109365658A (en) * | 2018-11-20 | 2019-02-22 | 岳西县盛宏工贸有限责任公司 | A kind of hot spinning expanding device |
| CN112893761A (en) * | 2020-07-21 | 2021-06-04 | 郎溪友良锻造铝合金轮毂股份有限公司 | One-step forging forming device and method for automobile hub |
| CN113231591A (en) * | 2021-06-07 | 2021-08-10 | 哈尔滨哈飞工业有限责任公司 | Group die for vertical forging of metal pipe |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815922A (en) * | 2015-03-23 | 2015-08-05 | 刘兴军 | Magnesium alloy vehicle hub molding device and molding process |
| CN105268903A (en) * | 2015-11-04 | 2016-01-27 | 浙江巨科实业股份有限公司 | Forging forming method of aluminum alloy hub |
| CN105397011A (en) * | 2015-12-24 | 2016-03-16 | 镇江奥兰迪汽车部件有限公司 | Wheel hub forging mold |
| CN108372214A (en) * | 2018-01-25 | 2018-08-07 | 杭州雷迪克节能科技股份有限公司 | Hub unit flange micro-flaw improves and detection method |
| CN108372214B (en) * | 2018-01-25 | 2019-09-20 | 杭州雷迪克节能科技股份有限公司 | A kind of hub unit flange micro-flaw improves and detection method |
| CN109093050A (en) * | 2018-09-20 | 2018-12-28 | 宁波宝通轮业有限公司 | A kind of forging mold and its forging method of aluminium alloy wheel hub |
| CN109365658A (en) * | 2018-11-20 | 2019-02-22 | 岳西县盛宏工贸有限责任公司 | A kind of hot spinning expanding device |
| CN112893761A (en) * | 2020-07-21 | 2021-06-04 | 郎溪友良锻造铝合金轮毂股份有限公司 | One-step forging forming device and method for automobile hub |
| CN113231591A (en) * | 2021-06-07 | 2021-08-10 | 哈尔滨哈飞工业有限责任公司 | Group die for vertical forging of metal pipe |
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