CN101045247A - Hydraulic forming press system and press method thereof - Google Patents
Hydraulic forming press system and press method thereof Download PDFInfo
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- CN101045247A CN101045247A CNA2006100668865A CN200610066886A CN101045247A CN 101045247 A CN101045247 A CN 101045247A CN A2006100668865 A CNA2006100668865 A CN A2006100668865A CN 200610066886 A CN200610066886 A CN 200610066886A CN 101045247 A CN101045247 A CN 101045247A
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Abstract
A hydraulic pressing system for forming a workpiece and its pressing method are disclosed. The part A to be expanded maximally and a part B linked to said part A and to be bent are first expanded and said part B is then bent inward by upper and lower dies to obtain the beautiful contour with minimal curvature radius.
Description
Technical field
The present invention relates to a kind of hydraulic forming press system and drawing method thereof.More specifically, the present invention relates to a kind ofly at first maximum extension part and connected sweep be expanded, and the hydraulic forming press system and the drawing method thereof that subsequently this sweep are inwardly folded.
Background technology
Usually, the shaped by fluid pressure method is by using hydraulic pressure to come the sheet metal forming process of expander to be implemented under room temperature (10 ℃-30 ℃).
The shaped by fluid pressure method is to alleviating pressed ware, and for example front side member in the auto industry (front side member) and bumper (bumper) are very effective methods, and it can reduce the production cost of pressed ware.
Except steel alloy, recently, in the shaped by fluid pressure method, high-strength aluminum alloy has been widely used in tubing to alleviate the weight of pipe.
When using the shaped by fluid pressure method, high-strength aluminum alloy formability at room temperature is than steel alloy difference.Therefore, at first need softening high-strength aluminum alloy, subsequently it is progressively implemented hydroforming to guarantee formability.After product shaping, improve product strength by heat treatment.
Hereinafter will describe the forming method of pipe in conjunction with Fig. 6 to 9 in detail, in the shaped by fluid pressure method, this pipe partly has minimum profile curvature radius in maximum extension.
At first, as shown in Figure 6, pipe 100 is loaded on the counterdie 101 of shaped by fluid pressure compacting tool set, then patrix 103 is lowered on it.
Subsequently, as shown in Figure 7, place the hydraulic pressure supply 113 and 115 at pipe 100 two ends on the axial direction of pipe 100, to push ahead stopper (plug) 105 and 107, bestow the axial compression effect with sealed tube 100 and to pipe 100.
More specifically, as shown in Figure 8, pipe 100 by counterdie 101, patrix 103 with and the stopper 105 at place, two ends and 107 fixing.
In this case,, manage 100 and be supplied to hydraulic pressure, make pipe expand according to the forming face 109 and 111 of counterdie and patrix 101 and 103 though receive the axial compressive force of stopper 105 and 107.
As shown in Figure 9, after finishing shaped by fluid pressure, promote patrix 103, take out stopper 105 and 107.Then from counterdie 101 take-off pipes 100.
Yet as shown in Figure 8, when forming the minimum profile curvature radius part at maximum extension part P1 place, the expansion of hydraulic pressure is not sufficient to make tubing fully mobile towards minimum profile curvature radius part P2.In this case, problem is arisen at the historic moment, and for example the thickness of minimum profile curvature radius part P2 place pipe 100 can become very little, and is perhaps more serious, crack (C) may occur.
The disclosed above-mentioned information of background parts only is used to strengthen the understanding to background of the present invention, and therefore, it can contain the information that those of ordinary skills is not constituted home prior art.
Summary of the invention
The present invention is devoted to provide a kind of hydraulic forming press system and drawing method thereof, and this system and method has the following advantages: by at first to maximum extension part with connected sweep is expanded and subsequently sweep is inwardly folded and guarantee that sufficient material stream flows to and be formed at maximum extension minimum profile curvature radius part partly.
A kind of exemplary according to embodiments of the present invention hydraulic forming press system, this hydraulic forming press system provide hydraulic pressure to come convergent divergent channel by the hydraulic pressure supply that the two ends that place pipe are located when pipe is surrounded by mould.
This exemplary hydraulic forming press system comprises:
Fixing counterdie, this fixedly counterdie be installed in down on the bolster and have forming face, this forming face is used for the maximum extension part of pipe on the upper surface of fixing counterdie;
Fixing patrix, this fixedly patrix be installed in the corresponding top shoe of following bolster on and have a forming face, this forming face is on the lower surface of fixing patrix, and is corresponding with the forming face of fixing counterdie;
Movable counterdie, described movable counterdie is installed in the fixedly side separately of counterdie, and to slide by the axis direction of guider along pipe, each movable counterdie all has the lip-deep forming face that is used to manage each side thereon;
Movable patrix, described movable patrix is installed in the fixedly side separately of patrix, sliding along the axis direction of pipe by guider, each movable patrix all has the forming face that being used on its lower surface manage each side, and the forming face of movable patrix is corresponding with the forming face of movable counterdie;
Make pipe be full of effective feeder (actual feeders) of hydraulic pressure by the pipe two ends, described effective feeder has carriage respectively, with compressed pipe on the axis direction of pipe; And
Be used to support the movable block of effective feeder, described movable block is installed in respectively on the action bars of hydraulic pressure supply.
Described guider can comprise configuration respectively fixing counterdie and fixedly the patrix place guide rail and distinguish the way block of configuration according to guide rail at movable counterdie and movable patrix place.
Movable counterdie can move according to the movable patrix on opposite.
In addition, return unit can be inserted in fixedly counterdie and movable counterdie and fixedly between patrix and the movable patrix.
This return unit can comprise wind spring.
Movable block can move with the action bars of hydraulic pressure supply, with inside promotion activity counterdie and movable patrix.
The exemplary according to embodiments of the present invention hydraulic forming press system of another kind, this hydraulic forming press system provide hydraulic pressure to come convergent divergent channel by the hydraulic pressure supply that the two ends that place pipe are located when pipe is surrounded by mould.
This exemplary hydraulic forming press system comprises:
Fixing counterdie, this fixedly counterdie be installed in down on the bolster and have forming face, this forming face is used for the maximum extension part of pipe on the upper surface of fixing counterdie, wherein maximum extension partly has minimum radius of curvature part;
Fixing patrix, this fixedly patrix be installed in the corresponding top shoe of following bolster on and have a forming face, this forming face is on the lower surface of fixing patrix, and is corresponding with the forming face of fixing counterdie;
Movable counterdie, described movable counterdie is installed in the fixedly side separately of counterdie, and to slide by the axis direction of guider along pipe, each movable counterdie all has the lip-deep forming face that is used to manage each side thereon;
Movable patrix, described movable patrix is installed in the fixedly side separately of patrix, sliding along the axis direction of pipe by guider, each movable patrix all has the forming face that being used on its lower surface manage each side, and the forming face of movable patrix is corresponding with the forming face of movable counterdie;
Make pipe be full of effective feeder of hydraulic pressure by the pipe two ends, described effective feeder has carriage respectively, with compressed pipe on the axis direction of pipe; And
Be used to support the movable block of effective feeder, described movable block is installed in respectively on the action bars of hydraulic pressure supply.
Back-moving spring can be inserted in fixedly counterdie and movable counterdie and fixedly between patrix and the movable patrix.
Guider can comprise configuration respectively fixing counterdie and fixedly the patrix place guide rail and distinguish the way block of configuration according to guide rail at movable counterdie and movable patrix place.
Back-moving spring comprises wind spring.
A kind of exemplary according to embodiments of the present invention shaped by fluid pressure drawing method, this shaped by fluid pressure drawing method provide hydraulic pressure to come convergent divergent channel by the hydraulic pressure supply that the two ends that place pipe are located when pipe is surrounded by mould.This exemplary shaped by fluid pressure drawing method comprises:
By in pipe, providing hydraulic pressure to come configuration maximum extension part and the sweep that partly is connected with this maximum extension; And
The sweep of inside folded tube.
Configuration maximum extension part and the sweep that partly is connected with this maximum extension can be at fixedly patrix and movable patrixes and are fixedly implemented under the situation of each interval one preset distance between counterdie and the movable counterdie.
In addition, inwardly the sweep of folded tube can all be implemented by inside slip activity patrix and movable counterdie under the situation by movable patrix and the support of movable counterdie in the both sides of sweep.
Description of drawings
Fig. 1 is the cross-sectional view according to the hydraulic forming press system of exemplary of the present invention.
Fig. 2 is to the step-by-step operation state of Fig. 5 demonstration according to the hydraulic forming press system of exemplary of the present invention.
Fig. 6 shows the step-by-step operation state of conventional hydraulic forming press system to Fig. 9.
The specific embodiment
Hereinafter will be described in detail with reference to the attached drawings exemplary of the present invention.
Fig. 1 is the cross-sectional view according to the hydraulic forming press system of exemplary of the present invention.According to the hydraulic forming press system of exemplary of the present invention by providing hydraulic pressure to come to expand to managing 1 by the pipe two ends.Hydraulic pressure is by hydraulic pressure supply 3 that places pipe 1 each end and 5 supplies.As shown in Figure 5, pipe 1 has minimum profile curvature radius part P2 at maximum extension part P1 place.
Comprise fixedly counterdie 11, fixedly patrix 13, movable counterdie 21 respect to one another and 23, movable patrix 31 respect to one another and 33, effective feeder 41 and 43 and movable block 45 and 47 according to the hydraulic forming press system of exemplary of the present invention.
Fixedly counterdie 11 has forming face F1, and this forming face F1 is positioned on the upper surface of fixing counterdie, be used to manage 1 maximum extension part, and fixedly counterdie is installed in down on the bolster 15.
Fixedly patrix 13 has forming face F1, and this forming face F1 is positioned on the lower surface of fixing patrix, is used for the maximum extension part.Should be fixedly patrix 13 forming face F1 and fixedly the forming face F1 of counterdie 11 is corresponding.Fixedly patrix 13 is installed on the top shoe 17.
In addition, movable patrix 31 and 33 is installed in the fixedly both sides of patrix 13.Movable patrix 31 and 33 can move along the axis direction of pipe 1.Movable patrix 31 and 33 all has the forming face F2 that is used to manage 1 two ends on its lower surface.The forming face F2 of movable patrix 31 and 33 forming face F2 and movable counterdie 21 and 23 is corresponding.
Fixedly between counterdie 11 and movable counterdie 21 and 23 and fixedly all be separately installed with guider between patrix 13 and movable patrix 31 and 33.
Each guider all comprises guide rail R and way block B.Guide rail R difference configuration is at fixedly counterdie 11 and the fixedly both sides of patrix 13.Way block B difference configuration is on movable counterdie 21 and 23 and on movable patrix 31 and 33. Movable counterdie 21 and 23 and movable patrix 31 and 33 can move along the axis direction of pipe 1 according to guide rail R.
Back-moving spring S is inserted in respectively fixedly between the counterdie 11 and movable counterdie 21 and 23.Back-moving spring S is inserted among the H of spring housing, the H of spring housing respectively configuration at fixedly counterdie 11 and movable counterdie 21 and 23 places.When movable counterdie 21 and 23 when fixedly counterdie 11 moves, this back-moving spring S to movable counterdie 21 and 23 and fixedly counterdie 11 bestow restoring force, make their apart preset distances.
In addition, back-moving spring S also is inserted in respectively fixedly between the patrix 13 and movable patrix 31 and 33.These back-moving springs S is inserted among the H of spring housing, the H of spring housing respectively configuration at fixedly patrix 13 and movable patrix 31 and 33 places.This back-moving spring S bestows restoring force to movable patrix 31 and 33.
Back-moving spring S can be configured as wind spring.
In addition, effectively feeder (actual feeders) 41 and 43 is installed in respectively on the action bars 7 and 9 of hydraulic pressure supply 3 and 5.Effectively feeder 41 and 43 makes pipe 1 be full of hydraulic pressure by managing 1 two ends, and imposes on axial compression to pipe 1.
In addition, movable block 45 and 47 and effectively feeder 41 and 43 one configurations is so that respectively towards fixing counterdie 11 and fixing patrix 13 promotion activity counterdies 21 and 23 and movable patrix 31 and 33.
In other words, maximum extension part and sweep are expanded, are fully flowed to until tubing and manage 1, so as movable patrix 31 and 33 and movable counterdie 21 and 23 situation about combining under, partly form the minimum profile curvature radius part in maximum extension.After this, by action bars 45 and 47 promotion activity patrix 31 and 33 and movable counterdie 21 and 23 respectively, with towards fixing counterdie 11 and fixedly patrix 13 slide.Action bars 45 and 47 is installed on hydraulic pressure supply 3 and 5, and is controlled as respectively towards fixing counterdie 11 and fixing patrix 13 promotion activity patrixes 31 and 33 and movable counterdie 21 and 23. Movable patrix 31 and 33 and the two ends of movable counterdie 21 and 23 inwardly folding maximum extensions parts so that form the minimum profile curvature radius part.
Hereinafter 1 arrive the shaped by fluid pressure drawing method of Fig. 5 detailed description with reference to the accompanying drawings according to exemplary of the present invention.
As shown in Figure 1, pipe 1 is loaded on the fixedly counterdie 11 and movable counterdie 21 and 23 of shaped by fluid pressure forcing press.
Subsequently, as shown in Figure 2, put down fixedly patrix 13 and movable patrix 31 and 33, so that counterdie 11 and movable counterdie 21 and 23 combine respectively with fixedly.
In this case, movable patrix 31 and 33 and movable counterdie 21 and 23 and fixedly patrix 13 and fixedly counterdie 11 a spaced apart preset distance 1 respectively.
In this case, as shown in Figure 3, along with the action bars 7 and 9 of hydraulic pressure supply 3 and 5 advances, effectively feeder 41 and 43 two ends of inserting pipe 1.
Afterwards, as shown in Figure 4, hydraulic pressure supply 3 and 5 uses effective feeder 41 and 43 that hydraulic pressure is supplied to pipe 1, so that pipe is expanded.
In this case, the maximum extension part P1 of pipe 1 is at fixedly patrix 13 and fixedly the forming face F1 place formation of counterdie 11.Equally, the bent portion P 3 of pipe 1 forms to forming face F2 at the two ends from forming face F1 respectively.Forming face F2 and forming face F1 be a preset distance 1 at interval.
In this case, tubing is very sufficient towards flowing of bent portion P 3, is enough to partly form minimum profile curvature radius part P2 in the maximum extension of pipe 1.
Therefore, by movable patrix 31 with 33 and movable counterdie 21 and 23 make the bent portion P 3 that is connected with the maximum extension part P1 of pipe 1 inwardly fold.
That is to say that minimum profile curvature radius part P2 forms by the bent portion P 1 of method for folding by pipe 1, flows and need not extra material.
As mentioned above, when using according to hydraulic forming press system of the present invention and drawing method thereof, because at first flow configuration with the material of abundance with the sweep that maximum extension partly is connected, then by movable patrix and inwardly folding this sweep of movable counterdie, so the minimum profile curvature radius part of can configuration attractive in appearance partly locating in maximum extension.
Therefore, can solve such problem: for example the thickness of minimum profile curvature radius is different with the thickness of other parts, perhaps at the minimum profile curvature radius place owing to material inadequate the splitting of flowing.
Though described the present invention together with the exemplary that current consideration is implemented, be understandable that the present invention is not limited to disclosed embodiment.On the contrary, it is intended to contain multiple remodeling and the equivalent constructions that comprises in claims purport and the scope.
Claims (13)
1. hydraulic forming press system, the hydraulic pressure supply at the place, two ends by placing pipe provides hydraulic pressure to come convergent divergent channel, and this pipe is surrounded by mould, and this hydraulic forming press system comprises:
Fixing counterdie, this fixedly counterdie be installed in down on the bolster and have forming face, this forming face is used for the maximum extension part of pipe on the upper surface of fixing counterdie;
Fixing patrix, this fixedly patrix be installed in the corresponding top shoe of following bolster on and have a forming face, this forming face is on the lower surface of fixing patrix, and is corresponding with the forming face of fixing counterdie;
Movable counterdie, described movable counterdie is installed in the fixedly side separately of counterdie, and to slide by the axis direction of guider along pipe, each movable counterdie all has the lip-deep forming face that is used to manage each side thereon;
Movable patrix, described movable patrix is installed in the fixedly side separately of patrix, sliding along the axis direction of pipe by guider, each movable patrix all has the forming face that being used on its lower surface manage each side, and the forming face of movable patrix is corresponding with the forming face of movable counterdie;
Make pipe be full of effective feeder of hydraulic pressure by the pipe two ends, described effective feeder has carriage respectively, with compressed pipe on the axis direction of pipe; And
Be used to support the movable block of effective feeder, described movable block is installed in respectively on the action bars of hydraulic pressure supply.
2. the system of claim 1 is characterized in that, guider comprises:
Configuration is at fixedly counterdie and the fixedly guide rail at patrix place respectively; And
According to the way block of guide rail difference configuration at movable counterdie and movable patrix place.
3. the system of claim 1 is characterized in that, movable counterdie moves according to the movable patrix on opposite.
4. the system of claim 1 is characterized in that, return unit is inserted in fixedly counterdie and movable counterdie and fixedly between patrix and the movable patrix.
5. the system of claim 4 is characterized in that, return unit comprises wind spring.
6. the system of claim 1 is characterized in that, movable block moves with the action bars of hydraulic pressure supply, with inside promotion activity counterdie and movable patrix.
7. hydraulic forming press system, the hydraulic pressure supply at the place, two ends by placing pipe provides hydraulic pressure to come convergent divergent channel, and this pipe is surrounded by mould, and this hydraulic forming press system comprises:
Fixing counterdie, this fixedly counterdie be installed in down on the bolster and have forming face, this forming face is used for the maximum extension part of pipe on the upper surface of fixing counterdie, wherein maximum extension partly has minimum radius of curvature part;
Fixing patrix, this fixedly patrix be installed in the corresponding top shoe of following bolster on and have a forming face, this forming face is on the lower surface of fixing patrix, and is corresponding with the forming face of fixing counterdie;
Movable counterdie, described movable counterdie is installed in the fixedly side separately of counterdie, and to slide by the axis direction of guider along pipe, each movable counterdie all has the lip-deep forming face that is used to manage each side thereon;
Movable patrix, described movable patrix is installed in the fixedly side separately of patrix, sliding along the axis direction of pipe by guider, each movable patrix all has the forming face that being used on its lower surface manage each side, and the forming face of movable patrix is corresponding with the forming face of movable counterdie;
Make pipe be full of effective feeder of hydraulic pressure by the pipe two ends, described effective feeder has carriage respectively, with compressed pipe on the axis direction of pipe; And
Be used to support the movable block of effective feeder, described movable block is installed in respectively on the action bars of hydraulic pressure supply.
8. the system of claim 7 is characterized in that, back-moving spring is inserted in fixedly counterdie and movable counterdie and fixedly between patrix and the movable patrix.
9. the system of claim 7 is characterized in that, guider comprises:
Configuration is at fixedly counterdie and the fixedly guide rail at patrix place respectively; And
According to the way block of guide rail difference configuration at movable counterdie and movable patrix place.
10. the system of claim 7 is characterized in that, back-moving spring comprises wind spring.
11. a shaped by fluid pressure drawing method, the hydraulic pressure supply of locating by the two ends that place pipe provides hydraulic pressure to come convergent divergent channel, and this pipe is surrounded by mould, and this shaped by fluid pressure drawing method comprises:
By in pipe, providing hydraulic pressure to come configuration maximum extension part and the sweep that partly is connected with this maximum extension; And
The sweep of inside folded tube.
12. the method for claim 11, wherein:
Configuration maximum extension part and be at fixedly patrix and movable patrix with sweep that this maximum extension partly is connected and fixedly implement under the situation of each interval one preset distance between counterdie and the movable counterdie.
13. the method for claim 11, wherein
Inwardly the sweep of folded tube is all to implement by inside slip activity patrix and movable counterdie under the situation by movable patrix and the support of movable counterdie in the both sides of sweep.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100668865A CN100551575C (en) | 2006-03-31 | 2006-03-31 | Hydraulic forming press system and drawing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100668865A CN100551575C (en) | 2006-03-31 | 2006-03-31 | Hydraulic forming press system and drawing method thereof |
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| Publication Number | Publication Date |
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| CN101045247A true CN101045247A (en) | 2007-10-03 |
| CN100551575C CN100551575C (en) | 2009-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100668865A Expired - Fee Related CN100551575C (en) | 2006-03-31 | 2006-03-31 | Hydraulic forming press system and drawing method thereof |
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| CN101823096A (en) * | 2010-04-12 | 2010-09-08 | 燕山大学 | Semi-sliding hydraulic bulging technology of automobile axle housing part and die thereof |
| CN102059287A (en) * | 2009-10-19 | 2011-05-18 | 三星电子株式会社 | Patterning apparatus and patterning method using the same |
| CN101559459B (en) * | 2008-04-15 | 2011-07-06 | 通用汽车环球科技运作公司 | Hydroforming die adjustable for springback correction |
| CN102319834A (en) * | 2011-07-14 | 2012-01-18 | 燕山大学 | Steel pipe expansion pressure forming method for axle housing of engineering vehicle |
| CN102407255A (en) * | 2010-09-21 | 2012-04-11 | 吉林省车桥汽车零部件有限公司 | Production method of transition bridge bent tube of heavy-duty truck |
| CN102500709A (en) * | 2011-09-22 | 2012-06-20 | 上海英汇科技发展有限公司 | Method and system for simultaneously processing forming of two ends of tubular workpiece |
| CN102861815A (en) * | 2012-09-07 | 2013-01-09 | 凌云工业股份有限公司 | Profiling mold for U-shaped automobile glass guide rail |
| CN103191970A (en) * | 2013-04-25 | 2013-07-10 | 哈尔滨工业大学 | Assembling die for high-pressure forming inside reducer pipe |
| CN103464562A (en) * | 2013-09-14 | 2013-12-25 | 中国第一汽车股份有限公司 | Cavity low-internal-pressure forming method |
| CN103747891A (en) * | 2011-08-19 | 2014-04-23 | 麦格纳国际公司 | Self-compensating retractable insert for high-temperature forming tools |
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| DE9411461U1 (en) * | 1994-01-21 | 1994-09-15 | Alcan Deutschland GmbH, 37075 Göttingen | Device for the high pressure molding of wheel rims |
| DE19620483B4 (en) * | 1996-05-21 | 2005-11-10 | Huber & Bauer Gmbh | Method and mold for connecting a hollow body with a ring body |
| CN2427399Y (en) * | 2000-05-12 | 2001-04-25 | 哈尔滨工业大学 | Internal pressing formation machine |
| CN1314496C (en) * | 2005-01-19 | 2007-05-09 | 哈尔滨工业大学 | Pre-forming device in hollow structure high-pressure forming process |
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- 2006-03-31 CN CNB2006100668865A patent/CN100551575C/en not_active Expired - Fee Related
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| CN101559459B (en) * | 2008-04-15 | 2011-07-06 | 通用汽车环球科技运作公司 | Hydroforming die adjustable for springback correction |
| CN102059287A (en) * | 2009-10-19 | 2011-05-18 | 三星电子株式会社 | Patterning apparatus and patterning method using the same |
| CN101823096A (en) * | 2010-04-12 | 2010-09-08 | 燕山大学 | Semi-sliding hydraulic bulging technology of automobile axle housing part and die thereof |
| CN101823096B (en) * | 2010-04-12 | 2013-05-08 | 燕山大学 | Semi-sliding hydraulic bulging technology of automobile axle housing part and die thereof |
| CN102407255A (en) * | 2010-09-21 | 2012-04-11 | 吉林省车桥汽车零部件有限公司 | Production method of transition bridge bent tube of heavy-duty truck |
| CN102407255B (en) * | 2010-09-21 | 2015-02-11 | 吉林省车桥汽车零部件有限公司 | Production method of transition bridge bent tube of heavy-duty truck |
| CN102319834A (en) * | 2011-07-14 | 2012-01-18 | 燕山大学 | Steel pipe expansion pressure forming method for axle housing of engineering vehicle |
| CN103747891A (en) * | 2011-08-19 | 2014-04-23 | 麦格纳国际公司 | Self-compensating retractable insert for high-temperature forming tools |
| CN103747891B (en) * | 2011-08-19 | 2015-10-14 | 麦格纳国际公司 | For the self-compensation type collapsible core of hot forming instrument |
| CN102500709A (en) * | 2011-09-22 | 2012-06-20 | 上海英汇科技发展有限公司 | Method and system for simultaneously processing forming of two ends of tubular workpiece |
| CN102861815A (en) * | 2012-09-07 | 2013-01-09 | 凌云工业股份有限公司 | Profiling mold for U-shaped automobile glass guide rail |
| CN103191970A (en) * | 2013-04-25 | 2013-07-10 | 哈尔滨工业大学 | Assembling die for high-pressure forming inside reducer pipe |
| CN103464562A (en) * | 2013-09-14 | 2013-12-25 | 中国第一汽车股份有限公司 | Cavity low-internal-pressure forming method |
| CN103464562B (en) * | 2013-09-14 | 2016-03-30 | 中国第一汽车股份有限公司 | Cavity low-internal-pressure manufacturing process |
| CN103785755A (en) * | 2014-02-28 | 2014-05-14 | 上海理工大学 | Hydraulic manufacturing mold, system and method for a double-channel double-layer pipe |
| CN103785755B (en) * | 2014-02-28 | 2016-01-20 | 上海理工大学 | The hydraulic pressure mfg. moulding die of the double-deck pipe fitting of binary channels, manufacturing system and manufacture method |
| CN105921588A (en) * | 2016-06-03 | 2016-09-07 | 广东工业大学 | Single-side feeding multi-branch-pipe inner high pressure forming method and device |
| CN105921588B (en) * | 2016-06-03 | 2018-10-19 | 广东工业大学 | A kind of unilateral feeding manifold inside high-pressure forming method and device |
| CN113333560A (en) * | 2017-03-17 | 2021-09-03 | 住友重机械工业株式会社 | Molding apparatus and molding method |
| CN113333560B (en) * | 2017-03-17 | 2024-04-26 | 住友重机械工业株式会社 | Forming device and forming method |
| CN107597942A (en) * | 2017-11-08 | 2018-01-19 | 燕山大学 | A kind of preparation method and its device of high strength alumin ium alloy tubing members |
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| Publication number | Publication date |
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| CN100551575C (en) | 2009-10-21 |
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