CN1781796A - Hydraulic forming part with internal partition - Google Patents
Hydraulic forming part with internal partition Download PDFInfo
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- CN1781796A CN1781796A CN 200510120002 CN200510120002A CN1781796A CN 1781796 A CN1781796 A CN 1781796A CN 200510120002 CN200510120002 CN 200510120002 CN 200510120002 A CN200510120002 A CN 200510120002A CN 1781796 A CN1781796 A CN 1781796A
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- parts
- structural framing
- internal partition
- hydraulic forming
- component
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
A tubular hydroformed frame member includes an internal bulkhead member which is formed during the hydroforming of the frame member from tubular raw material. The bulkhead member is cut from one face of a frame member by punching the three sides of an opening for welding access by using a die for forming a tubular frame member during the hydroforming. The bulkhead member is bent along the fourth side of the opening for welding access and formed into a bending constitution including a vertical part which extends over the opposite face of the frame member and a horizontal part for facilitating welding on the opposite face. Arrangement of the internal bulkhead member increases rigidity of the tubular frame member and reduces matchbox type deformation effect related to the tubular hydroformed frame member. The frame member having the internal bulkhead member is especially advantageous in the manufacture of a vehicle frame.
Description
The reference of related application
It is the preference of 60/625,912 U.S. Provisional Patent Application that the application requires the sequence number of on November 8th, 2004 application, and its content is by with reference to incorporating into here.
Technical field
The present invention relates to a kind of hydraulic forming part.
Background technology
Conventional front-end assembly in the automobile is often made by punching press and the several independent framework components of welding.Because these assemblies often are the combinations of a plurality of various frame partss, so one of the main challenge of manufacturing process is to keep rigidity.Because each of frame parts is connected to form assembly, is attached to the base portion of automobile then, realize that at front end rigidity required or expectation is then more difficult.This problem is known as " matchbox-type distortion " sometimes.Matchbox-type distortion is that a kind of sheetmetal when automobile partly is attached to framework and trends towards rocking and the phenomenon that occurs when parallelogram orientation moves from the preferred orthogonal orientation of expecting at hinge-point.Twisting sheetmetal by this way can cause the natural frequency rerum natura of front-end architecture relatively poor.
The manufacturing process of automobile is from using the development of MIG welding process, promptly wherein with two melts combine together in, by the welding process of a molten material line of bonding machine accumulation.Spot welding, a kind of about the electric current between two electrodes by with fusing with in conjunction with being placed on two metallo-processes between the electrode, in Automobile manufacturing, just utilized to a greater degree.Spot welding requires Frame Design to help to use the pinpoint welding procedure manufacturing.For example, if two tube-like pieces by spot welding, must provide the path by the abuts with wall of spot welding electrode to two tubular part.
The hydraulic forming tube-like piece frequently is used in the structure of car body structure, to utilize the spot welding manufacturing technology.Hydraulic forming is a kind of metal forming process, and this metal forming process uses high-pressure fluid so that tubular blank is outwards expand in the mould, so that tubular blank and mould cavity is surperficial consistent, thus the hydraulic forming part that formation has contoured.During manufacturing process, by in mould cavity, inserting shear knife (cutout), can form passage opening in having contoured hydraulic fluid drip molding, be used for the insertion point electrode welder, the periphery of tubular wall is pierced through by shear knife during process of expansion like this.Remaining slug is removed fully from the hydraulic forming part usually.
In the process that forms the automotive front end of making, the welded joint of cover need be managed and manage to automotive front end hydraulic forming structure.This welded joint need be by removing the large-scale welding passage opening of lot of materials usually on a side of hydraulic forming framing member.In case the vehicle front of work is assembled, the hydraulic forming pipe can experience bending or distortion mode.In this distortion circulation, the hydraulic forming pipe trends towards the matchbox-type distortion, generates higher load to pipe and pipe at pipe in the cover seam thus, and can cause fatigue of material and fracture.When hydraulic forming part is formed with bigger welding passage opening, this matchbox-type metaboly of easier appearance.By increasing the specification of material, by making parts big (increasing the geometric configuration of parts), by additional auxiliary reinforcement (for example by welding), or use the orthodox method of preformed structural foam, can increase the rigidity of hydraulic forming part, all these methods have all significantly increased the manufacturing cost of automotive front end assembly.
The automotive front end assembling process also must utilize the ability of tubular hydraulic molded component fully.A plurality of existing patents have been described the use of tubular part in mixing front end assemblies, but do not solve the matchbox-type problem on deformation.For example, the U.S.6 of Gerricke etc., 416,119 have described by using the automotive front end of hydraulic forming pipe structure.In Gerricke, first agent structure that forms by a plurality of tubular parts and be welded to one another with the relation that is clipped in the middle by second agent structure that sheetmetal forms.Yet, can be twisted when being secured to tubular part owing to sheet metal structure, this method still is subjected to the influence of matchbox-type metaboly.
Therefore, there are needs to the front-end architecture that adds the hydraulic forming pipe that uses the rigidity that can provide outstanding and rigidity ability.Also there are the needs that make assembly distortion or the minimized front end assemblies process of matchbox-type deformation tendency to a kind of.
Summary of the invention
One object of the present invention is: by being provided for the internal partition of hydraulic forming tubular frame parts, overcome the shortcoming of prior art.
Another object of the present invention is to provide a kind of process, utilizes it, during the hydroforming process of making the tubular frame parts, can form the internal partition that the tubular frame parts are used.
A characteristic of the present invention is that the formation of internal partition has increased the rigidity of tubular frame parts.
An advantage of the present invention is under the torsional loading effect of frame parts, provides internal partition to reduce the matchbox-type metaboly in the frame parts in hydraulic forming tubular frame parts.
Another characteristic of the present invention is to have formed internal partition during the hydroforming process of being made frame parts by tubular stock.
Another advantage of the present invention is that internal partition can be put in place by spot welding after hydroforming process finishes.
Another characteristic of the present invention is: during the hydroforming process by tubular stock material manufacture tubular frame parts, form internal partition by piercing die.
Another advantage of the present invention is that the formation of internal partition parts does not need independent manufacturing step.
Another advantage of the present invention is: during the hydroforming process, the amount of the waste material relevant with the formation of the conventional hydraulic shaping frame parts that wherein have the welding via hole has been reduced.
Another object of the present invention be to provide a kind of structure durable, cheap for manufacturing cost, maintenance free, easy to assembly and easy to use, be used for the internal partition of hydraulic forming part efficiently.
Another object of the present invention is to provide: a kind of be used to make have the hydroforming process of internal partition parts with the tubular frame parts of the rigidity that increases the hydraulic forming frame parts.
By providing a kind of hydraulic forming tubular frame parts that are included in the internal partition parts that form during the hydroforming process can realize these and other purpose, feature and advantage, wherein frame parts is made by the tubular stock material during hydroforming process according to the present invention.By utilizing punch die to penetrate three limits of welding passage opening, internal partition forms from the one side cutting, and wherein the tubular frame parts form during hydroforming process.Then, partition component is along the 4th spring song of welding passage opening, and the formation foldable structure, foldable structure comprises the vertical component of the distance between the apparent surface who crosses over frame parts and helps being welded to apparent surface's horizontal component.Configuration internal partition parts have increased the rigidity of tubular frame parts, and have reduced the matchbox-type anamorphic effect with hydraulic forming tubular frame part relation.Frame parts with internal partition is especially favourable in making automobile frame.
Description of drawings
By to of the present invention following open in detail, particularly when combining with accompanying drawing, advantage of the present invention will be apparent from, wherein:
Fig. 1 is the fragmentary, perspective view of the conventional hydraulic shaping frame parts that wherein form big welding via hole that use in the manufacturing of automotive front end assembly;
Fig. 2 is the diagrammatical cross-sectional view of the conventional hydraulic molded component that shows of Fig. 1, and the distortion that the both sides of section is called " matchbox-type distortion " is described with the form of dotted line;
Fig. 3 is the fragmentary, perspective view that is similar to the hydraulic forming structural framing of Fig. 1, but it is formed in accordance with the principles of the present invention to add the inner body dividing plate of frame parts;
Fig. 4 is the signal transversal surface of hydraulic forming structural framing parts shown in Figure 3;
Fig. 5 is that central authorities through the welding passage opening are along the cross-sectional view strength of the hydraulic forming structural framing parts of the straight line 5-5 of Fig. 3;
Fig. 6 is the perspective illustration of the part of hydraulic forming structural framing parts formed in accordance with the principles of the present invention; With
Fig. 7 is the cross-sectional view strength along the longitudinal centerline of hydraulic forming structural framing parts shown in Figure 6.
The specific embodiment
, can see well to Fig. 7 with reference to Fig. 3:, form the hydraulic forming structure member of an automobile frame part through adding the process of principle of the present invention.Automobile frame is preferably formed by hydraulic forming tubular part as much as possible.This tubular part can be through spot welding being formed for the general frame assembly of automotive front end, and other frame parts of automobile.
Hydraulic forming is a kind of technology, wherein by standard tubular raw material parts being put into the mould of shape corresponding to the specific features that will form.Then, liquid is introduced into the inside of tubular stock and pressurized, the shape that expands and determined by the mould of structure to present up to tubular stock.Expand and have the different shape of essence now with the tubular stock that reshapes.By punch die shear knife (die cutout), via hole can be formed and reshape tubular part, with allow spot-wedling electrode lead to relative adjacent sides with and put and generate solder bond between the parts.Adopt this mode, can most of framework as an example that adopts the hydraulic forming tubular part to be configured to automobile.
The structure member 10 that has shown traditional hydraulic forming among Fig. 1, wherein: tubular blank is inflated in punch die, and welding passage opening 12 is formed in the surface of structure member, is removed fully from structure member 10 by " slug " or residue blank that excision passage opening 12 forms.In Fig. 2, the phenomenon that is called " matchbox-type distortion " is schematically shown.At the stress of the preceding end frame structure that passes to automobile, especially under the effect of tersional stress, hydraulic forming part can move and form the parallelogram cross-sectional configuration, rather than more solid rectangular cross section shape.
With reference to the hydraulic forming structure member 20 shown in Fig. 3-7, welding passage opening 22 only pierces through on three limits of opening 22, thereby keeps sheetmetal or residue blank 25 to invest uncut the 4th limit 23 of opening 22.Residue blank 25 is shaped by the instrument (not shown) then, and it is of a size of and forms the height essence vertical component 26 identical with the internal height of hydraulic forming structure member 20 and serving as the horizontal component 28 of about right-angled bend with respect to vertical component.After forming vertical component 26, the horizontal component 28 that is formed by the remainder of blank 25 is formed.
Then, horizontal component 28 is spoted weld the bottom side 29 of hydraulic forming structure member 20, to rigidly fix the residue blank 25 of " L " shape.Residue blank 25 is from top side 21 bendings of parts 20, and wherein blank 25 keeps investing the top side 21 of structure member through vertical component 26, and then bends to the horizontal component 26 of the bottom side 29 that is soldered to parts 20.Therefore, residue blank 25 forms integral body, the internal partition 25 in the hydraulic forming structure member 20.
Dividing plate 25 essence have improved the rigidity of hydraulic forming structure member 20, and have increased under torsional loading the inhibition to the matchbox-type metaboly greatly.Test shows, has almost completely eliminated the matchbox-type metaboly.Because the material that tradition abandons is used to form dividing plate 25, owing to do not need optional feature, the cost that improves the rigidity of hydraulic forming structure member becomes minimum.Be no longer necessary for increase rigidity and take the measure that replenishes, comprise specification that increases material and the geometric configuration that increases parts.
Should be realized that: in the principle and scope of the present invention, by reading present disclosure, those skilled in the art will expect or carry out describing and illustrate the variation with details, material, step and the layout of the parts that characteristic of the present invention is described.Aforementioned description has illustrated the preferred embodiments of the present invention, yet, under the situation that does not deviate from scope of the present invention, can adopt with other embodiment based on the idea of describing.
Claims (19)
1. hydraulic forming structural framing parts, form and have a tubular cross section structure by the tubular stock blank, this tubular cross section structure has first surface and the opposing second surface of separating depth dimensions with described first surface, described hydraulic forming structural framing parts are formed with the welding passage opening of the described first surface that enters described structural framing parts, and described hydraulic forming structural framing parts comprise:
Internal partition parts, these internal partition parts are connected to the described first surface of described structural framing parts at described welding passage opening place and are welded to the described second surface of described structural framing parts, with across described depth dimensions.
2. hydraulic forming structural framing parts according to claim 1, wherein: the described first surface of described internal partition parts and described structural framing parts is integral, and from this described second surface bending to described structural framing parts.
3. hydraulic forming structural framing parts according to claim 2, wherein: described internal partition parts are bent to the structure that comprises vertical component and horizontal component, described vertical component is across the described first surface of described structural framing parts and the described depth dimensions between the second surface, and described horizontal component is parallel to the described second surface of described structural framing parts, is welded to described second surface to help described horizontal component.
4. hydraulic forming structural framing parts according to claim 3, wherein: by penetrate three limits of described welding passage opening during hydroforming process, described internal partition parts form from the described first surface of described structural framing parts.
5. hydraulic forming structural framing parts according to claim 4, wherein: described internal partition parts, and are integral with described first surface forming described vertical component along the 4th spring song of described welding passage opening.
6. hydraulic forming structural framing parts according to claim 3, wherein: described partition component has the transverse width dimension perpendicular to described depth dimensions, and described transverse width dimension is less than the respective transversal width dimensions of described structural framing parts.
7. hydraulic forming structural framing parts according to claim 3, wherein: described frame parts cross-sectional configuration is a rectangle, its width dimensions is perpendicular to described depth dimensions, described width dimensions is bigger than described depth dimensions, and the first surface of described structural framing parts and second surface are determined described width dimensions.
8. hydraulic forming structural framing parts according to claim 7, wherein: described partition component has the transverse width dimension perpendicular to described depth dimensions, and described transverse width dimension is less than the described width dimensions of described structural framing parts.
9. automobile frame parts that are used for vehicle comprise:
Determine the first surface of the width dimensions of described structural framing parts;
The second surface of the distance of the depth dimensions corresponding to described structural framing parts relative with described first surface and with interval;
Be formed on the welding passage opening in the described first surface; With
Internal partition parts, these internal partition parts are connected to the described first surface of described structural framing parts at described welding passage opening place and are welded to the described second surface of described structural framing parts, with across described depth dimensions.
10. automobile frame parts according to claim 9, wherein: by during hydroforming process, penetrating three limits of described welding passage opening, and to the crooked described internal partition parts of described second surface, described internal partition parts form from described first surface during hydroforming process.
11. automobile frame parts according to claim 10, wherein: described internal partition parts are along the 4th spring song of described welding passage opening, so that described internal partition parts and described first surface are integral.
12. automobile frame parts according to claim 10, wherein: described internal partition parts be bent to comprise integral body be connected to the vertical component of described first surface and substantially with the described second surface structure of crooked horizontal component abreast, described vertical component is across the described first surface of described structural framing parts and the described depth dimensions between the second surface, and described horizontal component is soldered to described second surface.
13. automobile frame parts according to claim 12, wherein: described frame parts has the rectangular cross section structure, and described width dimensions is greater than described depth dimensions.
14. automobile frame parts according to claim 13, wherein: the transverse width dimension of described internal partition parts is littler than the described width dimensions of described frame parts.
15. a method that forms the automobile frame parts may further comprise the steps:
The tubular blank raw material that will have first shape is placed in the mould;
Through hydroforming process, be second shape with first alteration of form of described tubular blank raw material; Described second shape has the opposing second surface of first surface and gap depth size; Described first surface has the width dimensions of cardinal principle perpendicular to described depth dimensions;
Become the welding passage opening by the triangle that during described change step, penetrates described opening; On the 4th limit of described opening, stay the partition component that invests described first surface;
With described partition component to described second surface bending to form the orientation substantially perpendicular to the vertical component of described first surface; With
Described partition component is welded to described second surface.
16. method according to claim 15, wherein: described bending step is along described the 4th spring Qu Suoshu partition component of described welding passage opening.
17. method according to claim 16, wherein said bending step also comprises: be formed on orientation in the described partition component substantially perpendicular to the step of the horizontal component of described vertical component.
18. method according to claim 17, wherein: described welding step comprises the step that described horizontal component is welded to described second surface.
19. method according to claim 18, wherein: described second is shaped as rectangle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62591204P | 2004-11-08 | 2004-11-08 | |
| US60/625,912 | 2004-11-08 | ||
| US11/230,681 | 2005-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1781796A true CN1781796A (en) | 2006-06-07 |
| CN100469640C CN100469640C (en) | 2009-03-18 |
Family
ID=39462086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101200025A Expired - Fee Related CN100469640C (en) | 2004-11-08 | 2005-11-08 | Hydraulic forming part with internal partition |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4993898B2 (en) |
| CN (1) | CN100469640C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775206A (en) * | 2017-09-05 | 2018-03-09 | 长江精工钢结构(集团)股份有限公司 | A kind of square tube internal partition is spelled, welding process method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101564257B1 (en) | 2009-12-28 | 2015-10-29 | 한온시스템 주식회사 | Carrier for Motor Vehicle |
| JP2014226995A (en) * | 2013-05-21 | 2014-12-08 | 株式会社神戸製鋼所 | Frame structure |
| KR101942953B1 (en) * | 2014-03-31 | 2019-04-17 | 가부시키가이샤 요로즈 | Suspension member and method for manufacturing same |
| JP6279695B2 (en) * | 2016-11-30 | 2018-02-14 | 株式会社神戸製鋼所 | Bumper reinforcement for vehicles |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10277683A (en) * | 1997-04-01 | 1998-10-20 | Toyota Motor Corp | Press forming method, forming method for automobile body and its construction |
| JPH11170060A (en) * | 1997-12-09 | 1999-06-29 | Toyota Motor Corp | Joining method between hydroformed part and other part, method and device for producing flange |
| JP2000033884A (en) * | 1998-05-13 | 2000-02-02 | Toyota Auto Body Co Ltd | Vehicle body front structure of tilt type cab-over type vehicle |
| FR2783489B1 (en) * | 1998-09-21 | 2000-12-08 | Vallourec Vitry | HOLLOW SUPPORT STRUCTURE OF ELONGATE FORM COMPRISING A TRANSVERSE FLANGE AT EACH OF ITS END |
| JP3719576B2 (en) * | 1998-12-24 | 2005-11-24 | 日産自動車株式会社 | Drilling method during hydroforming |
| MXPA02008003A (en) * | 2000-02-18 | 2003-05-23 | Cosma Int Inc | Tubular assembly having hydroformed interconnecting member and method for making same. |
-
2005
- 2005-11-04 JP JP2005321381A patent/JP4993898B2/en not_active Expired - Fee Related
- 2005-11-08 CN CNB2005101200025A patent/CN100469640C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107775206A (en) * | 2017-09-05 | 2018-03-09 | 长江精工钢结构(集团)股份有限公司 | A kind of square tube internal partition is spelled, welding process method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100469640C (en) | 2009-03-18 |
| JP2006136944A (en) | 2006-06-01 |
| JP4993898B2 (en) | 2012-08-08 |
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Granted publication date: 20090318 Termination date: 20191108 |