JPS5691904A - Manufacture of tapered bar with round section - Google Patents

Manufacture of tapered bar with round section

Info

Publication number
JPS5691904A
JPS5691904A JP17138779A JP17138779A JPS5691904A JP S5691904 A JPS5691904 A JP S5691904A JP 17138779 A JP17138779 A JP 17138779A JP 17138779 A JP17138779 A JP 17138779A JP S5691904 A JPS5691904 A JP S5691904A
Authority
JP
Japan
Prior art keywords
rolls
blank material
couple
rolled
rotation
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
JP17138779A
Other languages
Japanese (ja)
Other versions
JPH0126762B2 (en
Inventor
Akira Ono
Toyoyuki Tono
Tomohiko Ayada
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 JP17138779A priority Critical patent/JPS5691904A/en
Publication of JPS5691904A publication Critical patent/JPS5691904A/en
Publication of JPH0126762B2 publication Critical patent/JPH0126762B2/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
    • 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
    • B21B1/18—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 in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/12—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process axes being arranged in different planes

Abstract

PURPOSE:To manufacture a tapered bar possessing a round section, by adjusting the roll gap of each couple of the first and the second rolls, whose outer circumferences are provided with circumferential grooves of circular arc section of a specified curvature and axes of rotation are respectively parallel, in relation to the traveling distance of the rolled blank material. CONSTITUTION:A blank material introduced along the pathway (a) is first rolled from upside and underside by a couple of rolls 10, whose axes of rotation are parallel and outer circumferences are provided with circumferential grooves of a circular arc section of a specified curvature. At the same time, the blank material is pressed sideways by a couple of rolls 11 whose axes of rotation are parallel in a plane parallel to the plane including both axes of rotation of rolls 10 and outer circumferences are provided with a circumferential groove of a circular arc section of a specified curvature. Besides, the roll gap of each couple of rolls 10, 11, is respectively adjusted in relation to the traveling distance of the blank material; therefore, the blank material is preliminarily rolled into a tapered shape of approximately round section. Next, this tapered material is rolled by similarly constituted rolls 12, 13, and its roundness is further improved.
JP17138779A 1979-12-27 1979-12-27 Manufacture of tapered bar with round section Granted JPS5691904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17138779A JPS5691904A (en) 1979-12-27 1979-12-27 Manufacture of tapered bar with round section

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17138779A JPS5691904A (en) 1979-12-27 1979-12-27 Manufacture of tapered bar with round section

Publications (2)

Publication Number Publication Date
JPS5691904A true JPS5691904A (en) 1981-07-25
JPH0126762B2 JPH0126762B2 (en) 1989-05-25

Family

ID=15922213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17138779A Granted JPS5691904A (en) 1979-12-27 1979-12-27 Manufacture of tapered bar with round section

Country Status (1)

Country Link
JP (1) JPS5691904A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0538502A (en) * 1991-07-31 1993-02-19 Kawasaki Steel Corp Rolling method for sizing round steel bar
US5363682A (en) * 1991-11-29 1994-11-15 Kawasaki Steel Corporation Four-roller type sizing mill apparatus for producing round steel rods
EP0904860A2 (en) * 1997-09-30 1999-03-31 Firma Muhr und Bender Method and installation for manufacturing biconical wire
JP2006263767A (en) * 2005-03-23 2006-10-05 Showa Denko Kk Anomalous-shape material and its producing method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4716056B2 (en) * 2008-12-19 2011-07-06 ソニー株式会社 Liquid crystal display device and electronic device
CN109550781A (en) * 2018-11-23 2019-04-02 云南玉溪仙福钢铁（集团）有限公司 Roughing grooveless rolling method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5412420A (en) * 1977-06-30 1979-01-30 Matsushita Electric Ind Co Ltd Grating for lead storage battery
JPS54155973A (en) * 1978-05-30 1979-12-08 Nhk Spring Co Ltd Width collecting machine in leaf spring taper rolling

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5412420A (en) * 1977-06-30 1979-01-30 Matsushita Electric Ind Co Ltd Grating for lead storage battery
JPS54155973A (en) * 1978-05-30 1979-12-08 Nhk Spring Co Ltd Width collecting machine in leaf spring taper rolling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0538502A (en) * 1991-07-31 1993-02-19 Kawasaki Steel Corp Rolling method for sizing round steel bar
US5363682A (en) * 1991-11-29 1994-11-15 Kawasaki Steel Corporation Four-roller type sizing mill apparatus for producing round steel rods
EP0904860A2 (en) * 1997-09-30 1999-03-31 Firma Muhr und Bender Method and installation for manufacturing biconical wire
EP0904860A3 (en) * 1997-09-30 2000-07-05 Firma Muhr und Bender Method and installation for manufacturing biconical wire
JP2006263767A (en) * 2005-03-23 2006-10-05 Showa Denko Kk Anomalous-shape material and its producing method

Also Published As

Publication number Publication date
JPH0126762B2 (en) 1989-05-25

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