EP2511020A3 - Method for bending metal material, bending machine, bending-equipment line, and bent product - Google Patents

Method for bending metal material, bending machine, bending-equipment line, and bent product Download PDF

Info

Publication number
EP2511020A3
EP2511020A3 EP12174983A EP12174983A EP2511020A3 EP 2511020 A3 EP2511020 A3 EP 2511020A3 EP 12174983 A EP12174983 A EP 12174983A EP 12174983 A EP12174983 A EP 12174983A EP 2511020 A3 EP2511020 A3 EP 2511020A3
Authority
EP
European Patent Office
Prior art keywords
bending
metal material
heated portion
unit
supporting unit
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.)
Withdrawn
Application number
EP12174983A
Other languages
German (de)
French (fr)
Other versions
EP2511020A2 (en
Inventor
Atsushi Tomizawa
Fumihiko Kikuchi
Shinjiro Kuwayama
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.)
Nippon Steel Corp
Nippon Steel Pipe Co Ltd
Original Assignee
Sumitomo Metal Industries Ltd
Sumitomo Pipe and Tube Co Ltd
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 Sumitomo Metal Industries Ltd, Sumitomo Pipe and Tube Co Ltd filed Critical Sumitomo Metal Industries Ltd
Publication of EP2511020A2 publication Critical patent/EP2511020A2/en
Publication of EP2511020A3 publication Critical patent/EP2511020A3/en
Withdrawn legal-status Critical Current

Links

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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • 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
    • Y10T428/12292—Workpiece with longitudinal passageway or stopweld material [e.g., for tubular stock, etc.]

Abstract

The invention provides: a method for bending a workpiece in which, in a bending process, while successively or continuously feeding the workpiece held by a supporting unit from an upstream side of the supporting unit, bending is performed at a downstream side of the supporting unit; a bending machine; and a bending-equipment line. The bending method includes: supporting the metal material with a movable roller die; controlling the position of the movable roller die and/or the moving speed of the metal material; heating the metal material in a temperature range in which the heated portion can be plastically deformed and in a temperature range in which quenching can be performed, by using a heating unit that is provided around the outer circumference of the metal material, to apply a bending moment to the heated portion; and rapidly cooling the heated portion, by using a cooling unit that is provided around the outer circumference of the metal material. According to the present invention, even in a two-dimensional or three-dimensional continuous bending operation in which the metal material is two-dimensionally or three-dimensionally bent in different directions, and even when a high-strength metal material is bent, it is possible to effectively obtain a metal material having excellent shape fixability and uniform hardness distribution at low costs. Therefore, the bending method of the invention can be widely applied as an art for bending sophisticated automobile parts.
EP12174983A 2005-03-03 2006-02-23 Method for bending metal material, bending machine, bending-equipment line, and bent product Withdrawn EP2511020A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005059571 2005-03-03
JP2005242441 2005-08-24
EP06714360.2A EP1857195B8 (en) 2005-03-03 2006-02-23 Method for bending metal material and bent product

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP06714360.2 Division 2006-02-23
EP06714360.2A Division-Into EP1857195B8 (en) 2005-03-03 2006-02-23 Method for bending metal material and bent product
EP06714360.2A Division EP1857195B8 (en) 2005-03-03 2006-02-23 Method for bending metal material and bent product

Publications (2)

Publication Number Publication Date
EP2511020A2 EP2511020A2 (en) 2012-10-17
EP2511020A3 true EP2511020A3 (en) 2012-11-14

Family

ID=36941040

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06714360.2A Expired - Fee Related EP1857195B8 (en) 2005-03-03 2006-02-23 Method for bending metal material and bent product
EP12174983A Withdrawn EP2511020A3 (en) 2005-03-03 2006-02-23 Method for bending metal material, bending machine, bending-equipment line, and bent product

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06714360.2A Expired - Fee Related EP1857195B8 (en) 2005-03-03 2006-02-23 Method for bending metal material and bent product

Country Status (5)

Country Link
US (1) US20080066517A1 (en)
EP (2) EP1857195B8 (en)
KR (1) KR100878647B1 (en)
CN (1) CN101132869B (en)
WO (1) WO2006093006A1 (en)

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Also Published As

Publication number Publication date
EP1857195A4 (en) 2011-05-04
WO2006093006A1 (en) 2006-09-08
KR20070102594A (en) 2007-10-18
EP1857195B1 (en) 2014-04-30
US20080066517A1 (en) 2008-03-20
EP1857195A1 (en) 2007-11-21
CN101132869B (en) 2012-10-10
KR100878647B1 (en) 2009-01-15
CN101132869A (en) 2008-02-27
EP2511020A2 (en) 2012-10-17
EP1857195B8 (en) 2014-07-30

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