JPS5524779A - U-forming method and apparatus in uo-steel tube manufacturing process - Google Patents

U-forming method and apparatus in uo-steel tube manufacturing process

Info

Publication number
JPS5524779A
JPS5524779A JP9823578A JP9823578A JPS5524779A JP S5524779 A JPS5524779 A JP S5524779A JP 9823578 A JP9823578 A JP 9823578A JP 9823578 A JP9823578 A JP 9823578A JP S5524779 A JPS5524779 A JP S5524779A
Authority
JP
Japan
Prior art keywords
die
rocker
rotation
manufacturing process
cylinder
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.)
Pending
Application number
JP9823578A
Other languages
Japanese (ja)
Inventor
Takeshi Kono
Matsuo Usuda
Toshio Hirokawa
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
Original Assignee
Nippon 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP9823578A priority Critical patent/JPS5524779A/en
Publication of JPS5524779A publication Critical patent/JPS5524779A/en
Pending 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor
    • B21D5/0263—Die with two oscillating halves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To enhance the forming efficiency at UO-steel tube manufacturing process, by setting the initial set angle of rocker die at a specific value, as well as by controlling the rotaion of the rocker die.
CONSTITUTION: Rocker die 3' is attached to the rocker bracket 2' rotatably, and is equipped with upper and lower shoes 4,5 respectively, and the concerned data are set as: α=58W80°, β=90W100°, β-α=23W35°, wherein α is an angle made by segment lines A'B' and the horizon, β is an angle made by the segment lines O'A' and the horizon, A', B' are the rotation centers of shoes 4,5 respectively, and O' is the rotation center of the rocker die 3'. At the same time, the hydraulic cylinder 12 is installed between the brackets 2' and the die 3', and the rotation of the die 3' which rotates with shaft 18 of the die 3' as fulcrum is controlled. At the U-formation by lowering punch 1 upon the steel plate 6 being placed upon the upper shoe 4 of the die 3', rotation of die 3' is interrupted by the actuation of the cylinder 12, and at the time when the steel plate 6 begins to touch the lower shoe 5, the cylinder 12 is driven and the formation is perfected by giving rotating force to the die 3' as shown in the arrow.
COPYRIGHT: (C)1980,JPO&Japio
JP9823578A 1978-08-14 1978-08-14 U-forming method and apparatus in uo-steel tube manufacturing process Pending JPS5524779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9823578A JPS5524779A (en) 1978-08-14 1978-08-14 U-forming method and apparatus in uo-steel tube manufacturing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9823578A JPS5524779A (en) 1978-08-14 1978-08-14 U-forming method and apparatus in uo-steel tube manufacturing process

Publications (1)

Publication Number Publication Date
JPS5524779A true JPS5524779A (en) 1980-02-22

Family

ID=14214289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9823578A Pending JPS5524779A (en) 1978-08-14 1978-08-14 U-forming method and apparatus in uo-steel tube manufacturing process

Country Status (1)

Country Link
JP (1) JPS5524779A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5022248A (en) * 1990-10-12 1991-06-11 Caterpillar Inc. Press brake apparatus with powered adjustable female die jaws
US20110226032A1 (en) * 2010-03-19 2011-09-22 Uwe Feldmann Pipe-bending press
CN103056227A (en) * 2012-12-26 2013-04-24 江苏沪宁钢机股份有限公司 Press machine device for bending U-shaped round steel fillet hook
CN106607509A (en) * 2016-12-07 2017-05-03 襄阳市旭豪鸿泰机械制造有限公司 One-time forming stamping die for U-shaped vehicle door lock catch
JP2017217661A (en) * 2016-06-06 2017-12-14 新日鐵住金株式会社 Manufacturing method of closed cross-section structure member and upper die for o forming
CN108435970A (en) * 2018-05-24 2018-08-24 刘桂兰 A kind of construction reinforcing bar bending device
CN110394402A (en) * 2019-09-02 2019-11-01 北京航星机器制造有限公司 A multi-directional integral hot-press block mold and forming method for negative-angle parts

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5022248A (en) * 1990-10-12 1991-06-11 Caterpillar Inc. Press brake apparatus with powered adjustable female die jaws
US20110226032A1 (en) * 2010-03-19 2011-09-22 Uwe Feldmann Pipe-bending press
CN103056227A (en) * 2012-12-26 2013-04-24 江苏沪宁钢机股份有限公司 Press machine device for bending U-shaped round steel fillet hook
JP2017217661A (en) * 2016-06-06 2017-12-14 新日鐵住金株式会社 Manufacturing method of closed cross-section structure member and upper die for o forming
CN106607509A (en) * 2016-12-07 2017-05-03 襄阳市旭豪鸿泰机械制造有限公司 One-time forming stamping die for U-shaped vehicle door lock catch
CN108435970A (en) * 2018-05-24 2018-08-24 刘桂兰 A kind of construction reinforcing bar bending device
CN110394402A (en) * 2019-09-02 2019-11-01 北京航星机器制造有限公司 A multi-directional integral hot-press block mold and forming method for negative-angle parts

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