[go: up one dir, main page]

WO2013153680A1 - Dispositif et procédé de production de composant à section transversale fermée possédant une forme incurvée - Google Patents

Dispositif et procédé de production de composant à section transversale fermée possédant une forme incurvée Download PDF

Info

Publication number
WO2013153680A1
WO2013153680A1 PCT/JP2012/060639 JP2012060639W WO2013153680A1 WO 2013153680 A1 WO2013153680 A1 WO 2013153680A1 JP 2012060639 W JP2012060639 W JP 2012060639W WO 2013153680 A1 WO2013153680 A1 WO 2013153680A1
Authority
WO
WIPO (PCT)
Prior art keywords
cross
longitudinal direction
section structure
welded
rotating rolls
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/060639
Other languages
English (en)
Japanese (ja)
Inventor
和彦 樋貝
雄司 山▲崎▼
新宮　豊久
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Priority to PCT/JP2012/060639 priority Critical patent/WO2013153680A1/fr
Publication of WO2013153680A1 publication Critical patent/WO2013153680A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
    • B21D35/007—Layered blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
    • 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
    • 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
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • B21D5/086—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers for obtaining closed hollow profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/30—Seam welding of three-dimensional seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles

Definitions

  • the present invention relates to a method and an apparatus for manufacturing a closed cross-section structure part having a bent shape, and in particular, in the conventional automobile, home appliance, and other fields, it is manufactured by joining two separately formed bodies to form a closed cross section.
  • the present invention relates to a method and an apparatus for manufacturing a closed cross-section structure part having a bent shape, which can advantageously give a bent shape for the purpose of weight reduction, impact characteristics, and improvement of rigidity performance and an irregular cross-sectional shape over the entire length of the part.
  • Patent Document 1 a high-tensile steel sheet is roll-formed to produce a formed body having a constant cross-sectional shape, and then the formed body is induction-hardened and further has a constant curvature in its longitudinal direction (direction perpendicular to the cross-section).
  • a technique for manufacturing a bumper reinforcement as a shock absorber for a vehicle by bending into a circular arc shape is described.
  • Patent Document 2 is provided with a pair of rotating rolls arranged so as to sandwich the conveyance path of the thin metal plate and a rotating roll arranged below the pair of rotating rolls, and the pair of rotating rolls is variable in the roll interval.
  • a roll forming apparatus that can move up and down the disposed rotating rolls, and a part manufacturing method in the apparatus, when a part of a long thin metal plate is conveyed between the pair of rotating rolls, A technique for manufacturing a roll-formed part that does not have the same cross section in the longitudinal direction by changing the roll interval and raising and lowering a rotating roll installed below so as to locally deform the metal sheet being conveyed. Is described.
  • JP 2008-120227 A Japanese Patent Laid-Open No. 2007-30023
  • a closed cross-section part having a constant cross-sectional shape is formed by general roll forming, and then induction-quenched, and further, a curvature is given by three bending pieces to produce a bent closed cross-section part.
  • Patent Document 2 uses a forming apparatus with a rotating roll for changing the cross-sectional shape in the longitudinal direction of the part below the pair of rotating rolls. Although it is a molding technique that makes it possible to change the cross-sectional shape in the longitudinal direction, it is impossible to impart a curved shape in the longitudinal direction at the same time.
  • the cross-sectional shape (specifically, the cross-sectional shape perpendicular to the component longitudinal direction, that is, the cross-sectional shape of the component short direction) is changed in the component longitudinal direction, and the bending in the component longitudinal direction ( Or, furthermore, the three-dimensional shape imparting torsion) was impossible to proceed at the same time, so the cross-section of each part and the three-dimensional shape impartation had to be made into separate molding processes, It was costing minutes.
  • a high-strength steel plate is used as a material for weight reduction, molding defects are likely to occur in bending after the cross-section of each part of the part is deformed.
  • a closed cross-section structural part having a modified cross-sectional shape having a bend in the longitudinal direction of the part from two metal plates can be obtained by deforming each cross-section of the part.
  • a means that can be manufactured was found and the present invention was made.
  • the present invention is as follows. (1) A method of manufacturing a closed cross-section structure part having a deformed cross-sectional shape in which a bent part and a welded part are bent from two metal plates in a longitudinal direction of the part, and a flange part is connected to the welded part. A plate corresponding to a non-weld bent portion and a welded portion in the cross section of the component is provided by providing two metal plates each having a plate longitudinal direction curve corresponding to the component longitudinal direction curve and corresponding to both ends of the plate width to the flange portion.
  • the two metal plates after the press forming are overlapped vertically so that the convex side is on the outside, and the folds of the flange corresponding parts are welded in the longitudinal direction facing each other on both the left and right sides of the width.
  • Forming a welded portion to form a closed cross-section structure The obtained closed cross-section structure is guided and transported by a pair of left and right rotating rolls or further lower rotating rolls, and the folds and the folds are changed by changing the roll interval of the rotating rolls or raising and lowering the rotating rolls.
  • a plate corresponding to a non-weld bent portion and a welded portion in the cross section of the component is provided by providing two metal plates each having a plate longitudinal direction curve corresponding to the component longitudinal direction curve and corresponding to both ends of the plate width to the flange portion.
  • a press molding machine that performs press molding so that a crease is attached to the site;
  • the two metal plates after the press forming are overlapped vertically so that the convex side is on the outside, and the folds of the flange corresponding parts are welded in the longitudinal direction facing each other on both the left and right sides of the width.
  • a welder that forms a closed section structure by forming a welded portion The obtained closed cross-section structure is guided and transported by a pair of left and right rotating rolls or further lower rotating rolls, and the folds and the folds are changed by changing the roll interval of the rotating rolls or raising and lowering the rotating rolls.
  • An apparatus for manufacturing a closed cross-section structure part comprising: a roll forming machine that forms a three-dimensional object from a welded part as a starting part.
  • the present invention it is possible to impart a bending in the longitudinal direction of a part and its vertical direction, that is, a three-dimensional shape, by changing the cross-sectional shape, and manufacturing by reducing the number of molds and the assembly process.
  • the cost can be greatly reduced by the effect of process simplification.
  • it is possible to obtain a predetermined shape mainly by bending it is easy to manufacture parts using ultra-high strength steel sheets.
  • FIG. 2 is a schematic three-dimensional view showing an example of a part (a closed cross-section structure part having a curved shape) 10 to be manufactured by the present invention.
  • the cross-sectional shape (meaning the cross-sectional shape in the short direction, hereinafter the same) is a quadrangle and has a bend in the longitudinal direction, and the cross-sectional shape is different at the start and end portions in the longitudinal direction. (Ie, it is a variant).
  • the side length of the start end of the rectangular cross section is 30 mm, the length of one end of the end is 20 mm, the total length in the longitudinal direction (shortest distance between both ends in the length direction) is 300 mm, the curvature radius of the bend is 400 mm at the start end, and 400 mm at the end.
  • It is a shape in which the direction of bending is reversed left and right at the center in the longitudinal direction of the part (position 150 mm from both ends in the longitudinal direction).
  • a pair of two vertices at diagonal positions of the quadrangle form a welded portion 11 and the other pair forms a non-welded bent portion 12.
  • a flange portion 13 is connected to the welded portion 11.
  • the width of the flange portion 13 is 5 mm.
  • FIG. 1 is an explanatory view of a manufacturing process according to the present invention.
  • the part in the example of FIG. 2 is the part of Example 1 shown in FIG.
  • the two metal plates 1 a and 1 b have 2 on the width end side corresponding to the welded portion 11 connected to the flange portion 13 of the component 10 in order to represent the plate longitudinal direction bending corresponding to the component longitudinal direction bending.
  • bending lines (B) and (B) are provided in the metal plate 1a
  • bending lines (B ') and (B') are provided in the metal plate 1b, respectively, and the width corresponding to the non-weld bent portion 12 is provided.
  • a bending line (A) is provided in the metal plate 1a
  • a bending line (A ') is provided in the metal plate 1b.
  • the first step is a preforming step.
  • a press molding machine 20 having a punch 3 and a die 4
  • the part of the bending line (B) (B ′) on the width end side corresponding to the welded part 11 are press-molded so that the crease 2 is attached.
  • the mold shapes of the punch 3 and the die 4 are designed so that the crease 2 is formed.
  • the radius of curvature in the plate width direction at the location of the crease 2 takes a constant value over the entire length of the plate for each crease 2.
  • the second step is a width end welding step.
  • the pre-formed metal plates 1a and 1b are overlapped and welded so that the projecting side (the side where the crease 2 is formed by bending in the first step is the convex surface) is the outside.
  • the left and right bending lines (B) of the width overlapped with the upper and lower pressing jigs 6a and 6b, which are arranged in the machine 30 and pressed by the upper and lower pressing jigs 6a and 6b, respectively, facing the upper and lower sides of the width.
  • B ′) folds 2 in the part and folds 2 in the bending line (B) (B ′) part on the right end are welded in the longitudinal direction to form a welded portion 11 to form a closed cross-section structure 5.
  • This welding is preferably performed by spot welding or laser welding.
  • a well-known spot welding apparatus, a laser welding apparatus, etc. can be used for a welding apparatus (not shown).
  • the third step is a roll forming step. That is, the closed cross-section structure 5 obtained in the previous step is passed through the roll forming machine 40.
  • the roll forming machine 40 changes the roll interval between the rotating rolls 40a and 40b while guiding and transporting the closed cross-section structure 5 with a pair of left and right rotating rolls 40a and 40b, or a rotating roll 40c below. Furthermore, by raising and lowering the rotary roll 40c, the fold 2 and the welded portion 11 are used as a starting point to form a part 10 having a target shape.
  • the shape of the rotating roll is set to a shape that can stably guide the roll contact portion of the closed cross-section structure, which is the workpiece, without causing a positional shift or the like.
  • the rotary rolls 40a, 40b, and 40c in FIG. 1 are V-shaped as an example, but are not limited thereto.
  • the rotary rolls 40a and 40b that guide the flange portion 13 are provided with a notch 14 for flange guide at the bottom.
  • the roll interval of the rotating roll (corresponding to the pressing force from the left and right by the roll to the closed cross-section structure) and the raising and lowering position of the rotating roll (corresponding to the pushing force from the lower side by the roll to the closed cross-section structure) are obtained by the target part shape.
  • a rotating roll corresponding to the lower rotating roll may be installed on the upper side and used to form the target shape of the component.
  • the target shape of the part is a shape without twisting
  • two metal plates 1 on each of the two metal plates 1 in FIG. Regarding the total three bend lines including the bend line and one bend line inside the width, the radius of curvature is the same and the center of curvature is placed on the same straight line, but the target shape of the part is a twisted shape.
  • the target shape having a twist is achieved by either changing the radius of curvature or by preventing the center of curvature from being placed on the same straight line or both.
  • the first to third steps can produce a closed cross-section structure part using a mold, a rotating roll, etc. having a shape corresponding to the part shape, as in the case of a square part. it can.
  • FIG. 6 when a hexagonal cross-section component as shown in FIG. 5 is a manufacturing target, the number of non-weld bent portions 12 is increased by two compared to the case of the square cross-section of FIG. Accordingly, in accordance with this, as shown in FIG. 6, four bending lines (A), (B), (A ′) and (B ′) on the inner side are set for each of the upper and lower blanks. Then, as a manufacturing process, for example, a process as shown in FIG. 4 is adopted in which the apparatus member used in FIG. 1 is changed in response to the change from the rectangular cross section to the hexagonal cross section.
  • the mold shape used in the first step is a mold shape in which the crease 2 is attached at the positions of the bending lines (A), (B), (A ′), and (B ′) in FIG. To do.
  • the holding jig 6 has a cross-sectional shape that matches the blank shape after preforming.
  • the roll profile of the lower rotating roll 40c is formed into a flat bottom shape that can stably guide one side of the hexagon, for example. Except for these changes, the configuration is the same as in FIG. Thereby, the post-molding shape shown in the lower side of FIG. 6 is achieved with high accuracy and ease.
  • Part Target Shape The cross section is a shape that is irregularly shaped in the longitudinal direction of the part (each corner is a right angle), has a flange portion that continues to the welded portion, and has an S-shaped bend in the longitudinal direction of the component.
  • Part metal plate Two blanks A and B having an S-shaped bend corresponding to the part target shape were cut out from a cold-rolled steel plate (1.4 mm thick) having a tensile strength of 1180 MPa as a material.
  • Yielding conditions Laser welding, laser output 3.8 kW, welding speed 2.5 m / min, laser focus diameter 2 mm
  • one blank 1a has a bend line to be a crease 2 at a center position between two bend lines (B) and (B) on the width end side.
  • (A) is set
  • the other blank 1b is a bending line to be the crease 2 at the center position between the two bending lines (B ′) and (B ′) on the width end side.
  • (A ') was set.
  • the blank A is the upper side
  • the blank B is the lower side
  • the bending line (B) (B ') portion on the width end side facing up and down is laser-welded, and the obtained closed cross-section structure 5 was roll-formed as described above in the third step to obtain a part 10.
  • one blank 1a (blank A) should become a crease 2 at a position to the left of the center between the two bending lines (B) and (B) on the width end side.
  • the bend line (A) is set, and the other blank 1b (blank B) is positioned to the right of the center between the two bend lines (B ′) (B ′) on the width end side (the above-mentioned position with respect to the center position).
  • a bending line (A ′) to be the crease 2 is set at a position symmetrical to the left side position.
  • the molding can be performed in all of the first to third steps, and the part 10 after the third step achieves the target shape and molding such as fracture, buckling, wrinkle, etc. There were no defects.
  • the intermediate shape part 15 after the irregular cross section did not have a molding defect occurrence place, but the final shape part 16 after the bending process was buckled at the shown position.
  • Metal plate (a and b are either one of the two and the other, also called blank) 2 Fold line (corresponding to bending line (A) (A '), (B) (B')) 3 Punch 4 Die 5 Closed section structure 6 Holding jig (a and b are upper and lower) 10 parts (closed cross-section structure parts having a bent shape to be manufactured by the present invention) DESCRIPTION OF SYMBOLS 11 Welding part 12 Non-weld bending part 13 Flange part 14 Notch 15 Intermediate shape part 16 of comparative example 16 Final shape part 20 of comparative example Press molding machine 30 Welding machine 40 Roll forming machine 40a, 40b Rotary roll 40c Rotary roll

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
PCT/JP2012/060639 2012-04-13 2012-04-13 Dispositif et procédé de production de composant à section transversale fermée possédant une forme incurvée Ceased WO2013153680A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/060639 WO2013153680A1 (fr) 2012-04-13 2012-04-13 Dispositif et procédé de production de composant à section transversale fermée possédant une forme incurvée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/060639 WO2013153680A1 (fr) 2012-04-13 2012-04-13 Dispositif et procédé de production de composant à section transversale fermée possédant une forme incurvée

Publications (1)

Publication Number Publication Date
WO2013153680A1 true WO2013153680A1 (fr) 2013-10-17

Family

ID=49327283

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2012/060639 Ceased WO2013153680A1 (fr) 2012-04-13 2012-04-13 Dispositif et procédé de production de composant à section transversale fermée possédant une forme incurvée

Country Status (1)

Country Link
WO (1) WO2013153680A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929011Y1 (fr) * 1970-04-11 1974-08-07
WO2008123505A1 (fr) * 2007-04-04 2008-10-16 Sumitomo Metal Industries, Ltd. Procédé de fabrication, appareil de fabrication et appareil de fabrication en continu de produits pliés
JP2009019229A (ja) * 2007-07-11 2009-01-29 Mazda Motor Corp 車体閉断面構造部材の製造方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929011Y1 (fr) * 1970-04-11 1974-08-07
WO2008123505A1 (fr) * 2007-04-04 2008-10-16 Sumitomo Metal Industries, Ltd. Procédé de fabrication, appareil de fabrication et appareil de fabrication en continu de produits pliés
JP2009019229A (ja) * 2007-07-11 2009-01-29 Mazda Motor Corp 車体閉断面構造部材の製造方法

Similar Documents

Publication Publication Date Title
KR101814943B1 (ko) 프레스 성형품 및 프레스 성형품의 제조 방법 및 프레스 성형품의 제조 장치
JP5640346B2 (ja) 多角形閉断面構造部品の製造方法
CN110475628B (zh) 热冲压成形品、使用该热冲压成形品的汽车用的构造构件及热冲压成形品的制造方法
KR101579028B1 (ko) 폐단면 구조 부품의 제조 방법 및 장치
US20190105697A1 (en) Press-molded product, press-molded product producing method, and press-molded product producing apparatus
KR102497745B1 (ko) 차량 차축용 폐쇄 중공형 프로파일의 제조 방법
WO2013153683A1 (fr) Dispositif et procédé de production de composant à structure a section sans transversale fermée sans aile possédant une forme courbe
JP5206813B2 (ja) 曲がり形状を有する閉断面構造部品の製造方法及び装置
KR102196701B1 (ko) 자동차 구조 부재용 드로잉 성형체, 자동차 구조 부재용 드로잉 성형체의 제조 방법, 및 자동차 구조 부재용 드로잉 성형체의 제조 장치
JP5206805B2 (ja) 閉断面構造部品の製造方法及び装置
JP6665612B2 (ja) プレス成形品の製造方法及びプレス装置
JP5320952B2 (ja) 突合せ溶接ワークの強化方法及び突合せ溶接ワーク
JP5206812B2 (ja) 曲がり形状を有するフランジレス閉断面構造部品の製造方法及び装置
KR102330195B1 (ko) 성형체, 구조 부재, 및 성형체의 제조 방법
KR101324950B1 (ko) 이형단면의 융합점진성형에 의한 일체화 연속 제조방법
WO2013153680A1 (fr) Dispositif et procédé de production de composant à section transversale fermée possédant une forme incurvée
TWI477329B (zh) 具有彎曲形狀之閉斷面構造部品的製造方法及裝置
TWI477330B (zh) 具有彎曲形狀之無凸緣閉斷面構造部品的製造方法及裝置
KR20160078563A (ko) 구성부재 및 그 제조방법
JP2020121336A (ja) 車両構造部材を製造する方法
JP2017121658A (ja) 負角フランジ部材およびその製造方法、ならびに負角フランジ部材を備える構造体

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12874214

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12874214

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP