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JPS56154201A - Manufacture of tapered bar - Google Patents

Manufacture of tapered bar

Info

Publication number
JPS56154201A
JPS56154201A JP5687180A JP5687180A JPS56154201A JP S56154201 A JPS56154201 A JP S56154201A JP 5687180 A JP5687180 A JP 5687180A JP 5687180 A JP5687180 A JP 5687180A JP S56154201 A JPS56154201 A JP S56154201A
Authority
JP
Japan
Prior art keywords
rolling
roll
rolling rolls
small diameter
large diameter
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.)
Granted
Application number
JP5687180A
Other languages
Japanese (ja)
Other versions
JPS633681B2 (en
Inventor
Atsushi Takahashi
Toyoyuki Tono
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.)
NHK Spring Co Ltd
Original Assignee
NHK Spring 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 NHK Spring Co Ltd filed Critical NHK Spring Co Ltd
Priority to JP5687180A priority Critical patent/JPS56154201A/en
Publication of JPS56154201A publication Critical patent/JPS56154201A/en
Publication of JPS633681B2 publication Critical patent/JPS633681B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/007—Taper rolling, e.g. leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To improve the yield of material, and to improve the productivity, by composing the rolling rolls with two large diameter rolling rolls and a small diameter rolling roll, and by causing said small diameter rolling roll to make the rolling contact with a backup roll. CONSTITUTION:A bar type material 10 is supported freely rotatably around its axis 10a and movable in its axial direction. A couple of large diameter rolling rolls 11, 12 and a small diameter rolling roll 13 are arranged around the outer surface of the material 10 taking some distance between mutual outer surfaces; hereupon, the rolling rolls 11, 12, 13 are respectively supported freely rotatably around their own axes 11a, 12a, 13a all parallel to the axis 10a of the material 10, and besides, freely touchably and detachably from the material 10. The outer surface of rolling rolls 11, 12, 13 is respectively provided with conical surfaces 11b, 12b, 13b in which each large diameter side is placed on the front side in the advancing direction of the material 10 and is pressed to the outer surface of the material 10. A large diameter backup roll 14 is provided for supporting said small diameter rolling roll 13 by making the rolling contact with the rolling roll 13. The rolling rolls 11, 12 and the backup roll 14 are driven to rotate in the arrowed directions and are shifted so as to separate from each other relating to the extent of the axial movement of the material 10; hereby, the desired taper part is formed in the material 10.
JP5687180A 1980-04-28 1980-04-28 Manufacture of tapered bar Granted JPS56154201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5687180A JPS56154201A (en) 1980-04-28 1980-04-28 Manufacture of tapered bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5687180A JPS56154201A (en) 1980-04-28 1980-04-28 Manufacture of tapered bar

Publications (2)

Publication Number Publication Date
JPS56154201A true JPS56154201A (en) 1981-11-28
JPS633681B2 JPS633681B2 (en) 1988-01-25

Family

ID=13039481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5687180A Granted JPS56154201A (en) 1980-04-28 1980-04-28 Manufacture of tapered bar

Country Status (1)

Country Link
JP (1) JPS56154201A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019025536A (en) * 2017-08-03 2019-02-21 新日鐵住金株式会社 Die-forging component manufacturing method and die-forging component manufacturing facility
US20220388048A1 (en) * 2019-11-22 2022-12-08 Jfe Steel Corporation Rolling mill for diameter reducing rolling and method for manufacturing strip material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019025536A (en) * 2017-08-03 2019-02-21 新日鐵住金株式会社 Die-forging component manufacturing method and die-forging component manufacturing facility
US20220388048A1 (en) * 2019-11-22 2022-12-08 Jfe Steel Corporation Rolling mill for diameter reducing rolling and method for manufacturing strip material
EP4063035A4 (en) * 2019-11-22 2022-12-21 JFE Steel Corporation Rolling mill for diameter reduction rolling, and strip manufacturing method

Also Published As

Publication number Publication date
JPS633681B2 (en) 1988-01-25

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