CN102574192A - Bent member and method for manufacturing same - Google Patents
Bent member and method for manufacturing same Download PDFInfo
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- CN102574192A CN102574192A CN2010800430476A CN201080043047A CN102574192A CN 102574192 A CN102574192 A CN 102574192A CN 2010800430476 A CN2010800430476 A CN 2010800430476A CN 201080043047 A CN201080043047 A CN 201080043047A CN 102574192 A CN102574192 A CN 102574192A
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- bending
- bending part
- manufacturing process
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- shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
- B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/14—Making tubes from double flat material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
- B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
- E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
- E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0426—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section
- E04C2003/0439—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by material distribution in cross section the cross-section comprising open parts and hollow parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
- E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
- E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
- E04C2003/0465—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section square- or rectangular-shaped
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12229—Intermediate article [e.g., blank, etc.]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
Disclosed is a method for forming a bent member, which comprises a bending step for bending blanks (1, 2) in the bending profile shape corresponding to the bending of a bent member (30) in the length direction into the cross-section shape corresponding to a cross-section shaped split part of the bent member, and a joining step for joining two (or three or more) members (10, 20) obtained by the bending step. In conventional methods for forming bent members, when a single plate of a high-strength steel plate is used as a raw material, the forming into a desired bent member cannot be obtained in integral press forming, or when a single plate of a low-strength steel plate is used as the raw material, the forming into the bent member can be obtained, but an increase in the weight caused by an increase in reinforcement components is created because the shortage of member strength is created, resulting in insufficient component strength.
Description
Technical field
The present invention relates to plate forming is that bending part (is at length said; Be frame parts with curved shape) method, particularly relate to manufacturing process and the bending part and the bending part manufacturing approach that can be shaped to bending part from the high-strength steel sheet of hot strength (TS) more than 590MPa.
Background technology
As the method that obtains bending part, current methods be carry out by the metal veneer is stretched, outstanding, stretch the drawing that flange and crooked various forming modes are composited (after, be called existing drawing).Also proposed to cartridge carry out bending forming method (patent documentation 1), roll forming (roll forming) technology (patent documentation 2), used the scheme of the bending forming (patent documentation 3,4) of hollow component.And,, the scheme of the method (patent documentation 5) of filling-foam resin has been proposed as the example that bending part is strengthened.
Patent documentation 1: japanese patent laid-open 9-30345 communique
Patent documentation 2: japanese patent laid-open 11-129045 communique
Patent documentation 3: japanese patent laid-open 8-174047 communique
Patent documentation 4: Japanese Patent Laid is opened the 2005-1490 communique
Patent documentation 5: japanese patent laid-open 11-348813 communique
Satisfy the high strength of steel plate of the requirement of lightness; Can cause the outstanding reduction of stretching the flange formability of stretching of steel plate simultaneously; Therefore in existing drawing; Unfavorable conditions such as the meeting generation is broken, wrinkle particularly are accompanied by shape and become complicated, can produce the situation that can't obtain bending part.For example; When utilize existing drawing with TS when the veneer of the high-strength steel sheet more than the 590MPa is configured as the parts 50A that constitutes bending part 50 shown in Figure 11,50B (have and overlook in the observation and the bending of Z-direction at XY), can produce wrinkle (for example in the drawings " wrinkle " portion produce) in planar portions, longitudinal wall part, flange part produce and break (for example in the drawings " breaking " portion produce) in the side.At this moment; Through wrinkle resistant optimization or the component shape change that waits molding condition; In the generation of wrinkle of can realizing breaking is suppressed to a certain degree; But in such method, for for satisfy the lightness demand, corresponding to the further high strength of TS more than 980MPa, can be described as and have the limit.
In addition; Disclose through parts bending forming or roll forming tubular; Obtain the method (patent documentation 1～4) of high-intensity bending part thus; But the restriction on the operation, the viewpoint of raw-material formability are difficult to obtain complicated curved shape, and aspect the productions such as increase of process number, have very big problem.For example; Present situation is: using under the low intensive raw-material situation; Because in the problem that has the strength of parts deficiency on the other hand that obtains complicated shape easily; Therefore though have (patent documentations 5) such as technology that obtains stiffening effect through the filling of Foamex, from the cost aspect, this is a useful technology hardly for production aspect or the viewpoint utilized again.
Promptly; In existing manufacturing process, have following problem: with the veneer of high-strength steel sheet as raw-material situation under; In integrated punching is shaped, can't be configured as desirable bending part, or with the veneer of low-intensity steel plate as raw-material situation under, though can be configured as bending part; Need increase to have the parts of stiffening effect but strength of parts is not enough, thereby cause weight to increase.
Summary of the invention
The present invention states bright that kind as follows and implements in order to solve above-mentioned problem.
(1) a kind of bending part manufacturing process; This bending part manufacturing process is to be used for thereby the blank that is made up of the metal veneer is formed the method that obtains bending part; It is characterized in that; Said bending part manufacturing process has following operation: bending operation in this bending operation, is bent into the corresponding cross sectional shape of partitioning portion with the cross sectional shape of above-mentioned bending part with being formed with above-mentioned bending part at the blank of the crooked corresponding crooked outline shape of length direction; And the joint operation, engage in the operation at this, will engage by the plural parts that above-mentioned bending operation obtains.
On the basis of the bending part manufacturing process of (2) in (1), being put down in writing, it is characterized in that, before above-mentioned bending operation, form folding line or further form joint-cutting at above-mentioned blank.
(3) the bending part manufacturing process manufacturing that a kind of bending part, this bending part are to use (1) or (2) to be put down in writing forms.
(4) a kind of bending part manufacturing approach is characterized in that, said bending part manufacturing approach use (1) perhaps (2) bending part manufacturing process of being put down in writing make bending part.
According to the present invention,, therefore can realize being shaped to the integrated punching of the parts that constitute bending part from the veneer of high-strength steel sheet owing to be that flexural deformation is carried out in the material outstanding various shifting grounds of stretching flange that stretch hardly.In addition; Become the bending part of shaping target shape and be reflected on the contour shape of blank through making; Can easily obtain to have the parts of existing that can't obtain, curved shape that strength of parts is high and complicated thus, and can expect to make space enlargement, reach high lightness effect because of the attenuate of thickness of slab or the cancellation of strengthening part etc. because of dwindling of parts cross section.
Description of drawings
Fig. 1 is the synoptic diagram that an example of embodiment of the present invention is shown.
Fig. 2 is the synoptic diagram of a example that embodiment of the present invention is shown (with the different example of son for example).
Fig. 3 is the synoptic diagram of a example that embodiment of the present invention is shown (with the different example of son for example).
Fig. 4 is the synoptic diagram of a example that embodiment of the present invention is shown (with the different example of son for example).
Fig. 5 is the synoptic diagram of a example that embodiment of the present invention is shown (with the different example of son for example).
Fig. 6 is the synoptic diagram of a example that embodiment of the present invention is shown (with the different example of son for example).
Fig. 7 is the synoptic diagram of a example that embodiment of the present invention is shown (with the different example of son for example).
Fig. 8 is the synoptic diagram of a example that embodiment of the present invention is shown (with the different example of son for example).
Fig. 9 is the cutaway view that the example of various bending part section shapes is shown.
Figure 10 is the synoptic diagram of example that the formation method of folding line is shown.
Figure 11 is the synoptic diagram that illustrates based on an example of the bending part that has drawing now.
The specific embodiment
Fig. 1～Fig. 8 is the synoptic diagram that the mutual different example of embodiment of the present invention is shown respectively.Fig. 1, Fig. 2 are be bent into the only example of the situation of the polyline shaped bending of any direction in opposite two directions of bending part 30 at length direction; And in Fig. 1, sectional dimension is constant on the part length direction; And in Fig. 2, sectional dimension changes on the part length direction.In addition; The example of the situation that Fig. 3, Fig. 4 polyline shaped that all to be bending part 30 change towards other direction from any direction of opposite two directions being bent into of length direction is crooked; And in Fig. 3, sectional dimension is constant on the part length direction; And in Fig. 4, sectional dimension changes on the part length direction.In addition; Fig. 5, Fig. 6, Fig. 7, Fig. 8 are bending parts 30 at the example (Fig. 7, Fig. 8 are the examples that has the bending sections shape of distortion in the longitudinal direction) in the situation of the full curve sigmoid of any direction of opposite two directions that only is bent into of length direction; In addition, in Fig. 5, sectional dimension is constant on the part length direction; In Fig. 6, Fig. 7, Fig. 8, sectional dimension changes on the part length direction.
In these examples, two blanks 1,2 have identical flat shape each other, and this flat shape is formed, and as the bending part 30 of the shaping target crooked corresponding lateral bending song contour shape at length direction.In addition, can certainly on blank 1,2, be pre-formed the shape of hole that operation uses, flanging muscle (bead) etc.In bending operation, blank 1,2 is bent into the corresponding cross sectional shape of partitioning portion with the cross sectional shape of bending part 30, is respectively the parts 10,20 that constitute bending part 30.In addition, 1F, 2F are respectively the flange correspondence position of blank 1,2 or the flange of parts 10,20.In addition; In Fig. 1～Fig. 8; Drawn dotted line, dotted line is respectively mountain broken line, paddy broken line in the shape area of blank 1,2, these mountain broken lines, paddy broken line represented with bending operation in the corresponding position of utilization bending and the kink that forms (fin portion, recessed rib portion).In bending operation of the present invention, through carrying out bending ram processing, make the shaping of blank become the kink corresponding with target component so that use metal die, the part that is formed thus carries out the distortion of bending forming main body and is configured as target shape.
Then, in engaging operation, parts 10,20 are engaged and obtain bending part 30.Can adopt arbitrary methods such as welding, riveted joint, rivet, adhesive as the method that engages.
In addition; Though Fig. 1～example shown in Figure 6 is the example that is shaped to the parts cross sectional shape shown in Fig. 9 (a); But the present invention is not limited thereto, for example can certainly be applicable to shown in Fig. 9 (b) shaping of the parts cross sectional shape after the counter-rotating about with Fig. 9 (a), shown in Fig. 9 (c) only structure member 20 to bending the shaping etc. of the parts cross sectional shape that forms of flange 2F.In addition, Fig. 7, example shown in Figure 8 are the examples that is shaped to the parts cross sectional shape shown in Fig. 9 (d).
In addition; Though Fig. 1～Fig. 6, example shown in Figure 8 are the examples that uses the blank of two identical flat shapes for a bending part; But the present invention is not limited thereto, can certainly be useful in for bending part use three above blanks and wherein at least any blank form the situation with other different plane shapes.
In addition, in the present invention, in order to improve the positional precision of above-mentioned kink when the bending machining, preferably the above-mentioned mountain broken line in blank, the position of paddy broken line are pre-formed folding line.In addition, folding line not only is confined to spread all over whole positions (continuity ground) of the position corresponding with bending machining portion and forms, and also can according to circumstances only be formed at the part (spasmodically) of this position.The processing method of this formation folding line can preferably adopt impression processing (coining) etc.In addition, can also enumerate the method that is transferred to the surface of material with being formed at the surperficial concaveconvex shape continuity of roller.As the optimal way of above-mentioned folding line, can enumerate the V groove shown in Figure 10 (d) is made as the mode that wire (a), dotted line shape (b) and some wire (c) perhaps make up these compound wire.Here, the degree of depth of preferred V groove is below 20% of plate thickness (abbreviation thickness of slab).This is because surpass under 20% the situation of thickness of slab in the degree of depth of V groove; Needed strength of parts is reduced or produce and break at kink; And then in high-intensity metal material; Add deep trouth itself and be not easy, aspect production, there is very big problem in the cost aspect.
In addition, the mode of groove is not limited to V-shape (being not limited to the illustrative V groove of Figure 10 (d)), also can be various concave shape such as U word.In addition, under the situation of the radius of curvature of setting kink significantly, also many grooves can be set abreast.
In addition; Preferably; When predicting bending, applying excessive stretching, extension in part or contraction distortion processes and produces under the situation that perhaps the dangerous high part of wrinkle (as if for example the flange correspondence position at blank bears excessive stretching, extension or shrinks the part, many places that flange is processed) exists of breaking; If be pre-formed joint-cutting in above-mentioned part, the perhaps generation of wrinkle reliably then can further prevent to break.
Utilize the manufacturing process shown in the table 2 that the blank that is made up of the sheet metal (material symbol A, B, C) with the thickness of slab shown in the table 1 and tensile properties (yield strength YS, hot strength TS and stretching, extension El) is configured as bending part; The bending part shape that visualization obtained, and manufacturing process estimated.Consequently, as shown in table 2, in comparative example based on existing drawing; Produce wrinkle in " wrinkle " portion shown in Figure 11, produce in " breaking " portion and break, relative therewith; In example of the present invention, can obtain roughly to meet the bending part of target shape and do not produce break, wrinkle.
Table 1
| Material mark | Thickness of slab (mm) | YS(MPa) | TS(MPa) | EI(％) |
| A | 1.6 | 710 | 990 | 17 |
| B | 1.6 | 810 | 1190 | 13 |
| C | 1.6 | 1300 | 1500 | 9 |
Table 2
On the blank that constitutes by sheet metal (material symbol A, B, C) with the thickness of slab shown in the table 1 and tensile properties (yield strength YS, hot strength TS and stretching, extension El); Be pre-formed after the folding line that the V groove (degree of depth of V groove is as shown in table 3) by wire shown in Figure 10, dotted line shape or some wire constitutes; Utilize the manufacturing process shown in the table 3 to be configured as bending part; The bending part shape that visualization obtained, and manufacturing process estimated.Consequently, as shown in table 3, in example of the present invention, obtained not produce break, wrinkle and compare (dimensional accuracy is zero) bending part consistent with target shape even that situation is better with the example of the present invention among the embodiment 1.
Table 3
The explanation of Reference numeral is following:
1,2... blank; 1F, 2F... flange or flange correspondence position; 10,20... constitutes the parts of bending part involved in the present invention; 30... bending part involved in the present invention (shaping target); 50... bending part (Reference numeral A, B are for constituting the parts of bending part 50) based on existing drawing
Claims (3)
1. bending part manufacturing process, thus this bending part manufacturing process is to be used for the blank that is made up of the metal veneer is formed the method that obtains bending part, it is characterized in that,
Said bending part manufacturing process has following operation: bending operation; In this bending operation, be bent into the corresponding cross sectional shape of partitioning portion with the cross sectional shape of said bending part with being formed blank with the crooked corresponding crooked outline shape of the length direction of said bending part; And the joint operation, engage in the operation at this, will engage by the plural parts that said bending operation obtains.
2. bending part manufacturing process according to claim 1 is characterized in that,
Before said bending operation, form folding line or further form joint-cutting at said blank.
3. a bending part is characterized in that,
Said bending part is to use claim 1 or 2 described bending part manufacturing process manufacturings to form.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-224515 | 2009-09-29 | ||
| JP2009224515A JP5515566B2 (en) | 2009-09-29 | 2009-09-29 | Bent member forming method, bent member and bent member manufacturing method |
| PCT/JP2010/067312 WO2011040623A1 (en) | 2009-09-29 | 2010-09-28 | Bent member and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102574192A true CN102574192A (en) | 2012-07-11 |
| CN102574192B CN102574192B (en) | 2015-07-01 |
Family
ID=43826424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080043047.6A Active CN102574192B (en) | 2009-09-29 | 2010-09-28 | Bent member and method for manufacturing same |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20120171506A1 (en) |
| EP (1) | EP2484461B1 (en) |
| JP (1) | JP5515566B2 (en) |
| KR (1) | KR101443990B1 (en) |
| CN (1) | CN102574192B (en) |
| CA (1) | CA2772925C (en) |
| WO (1) | WO2011040623A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918725A (en) * | 2013-01-16 | 2015-09-16 | 新日铁住金株式会社 | Press-molding method |
| CN107359046A (en) * | 2016-05-10 | 2017-11-17 | 通用汽车环球科技运作有限责任公司 | Curve magnet and manufacture method |
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| JP5888048B2 (en) * | 2011-06-08 | 2016-03-16 | Ｊｆｅスチール株式会社 | Manufacturing method of metal parts with solid edges |
| JP5915930B2 (en) * | 2011-07-06 | 2016-05-11 | 株式会社リコー | Bending member, rail-shaped member, and image forming apparatus |
| DE102015226474A1 (en) * | 2015-12-22 | 2017-06-22 | Thyssenkrupp Ag | Semi-finished products for the production of hollow profiles, hollow profiles thereof and methods for their production |
| EP3379001B1 (en) * | 2017-03-22 | 2020-01-08 | Marte and Marte Limited Zweigniederlassung Österreich | Arbitrarily curved support structure |
| US10428522B2 (en) * | 2017-09-25 | 2019-10-01 | Pravin Nanayakkara | Construction metallic trapezoidal systems |
| JP2022042636A (en) * | 2020-09-03 | 2022-03-15 | プレス工業株式会社 | Vehicle body frame member, and method of manufacturing vehicle body frame member |
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- 2010-09-28 CN CN201080043047.6A patent/CN102574192B/en active Active
- 2010-09-28 EP EP10820735.8A patent/EP2484461B1/en active Active
- 2010-09-28 WO PCT/JP2010/067312 patent/WO2011040623A1/en active Application Filing
- 2010-09-28 US US13/395,477 patent/US20120171506A1/en not_active Abandoned
- 2010-09-28 CA CA 2772925 patent/CA2772925C/en not_active Expired - Fee Related
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104918725A (en) * | 2013-01-16 | 2015-09-16 | 新日铁住金株式会社 | Press-molding method |
| CN104918725B (en) * | 2013-01-16 | 2016-09-14 | 新日铁住金株式会社 | Impact forming method |
| CN107359046A (en) * | 2016-05-10 | 2017-11-17 | 通用汽车环球科技运作有限责任公司 | Curve magnet and manufacture method |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2772925A1 (en) | 2011-04-07 |
| JP5515566B2 (en) | 2014-06-11 |
| JP2011073010A (en) | 2011-04-14 |
| CN102574192B (en) | 2015-07-01 |
| CA2772925C (en) | 2015-02-03 |
| KR20120055616A (en) | 2012-05-31 |
| EP2484461A4 (en) | 2015-06-03 |
| EP2484461B1 (en) | 2018-04-18 |
| KR101443990B1 (en) | 2014-09-23 |
| US20120171506A1 (en) | 2012-07-05 |
| WO2011040623A1 (en) | 2011-04-07 |
| EP2484461A1 (en) | 2012-08-08 |
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