JPS5671526A - Production of annular member - Google Patents

Production of annular member

Info

Publication number
JPS5671526A
JPS5671526A JP14935579A JP14935579A JPS5671526A JP S5671526 A JPS5671526 A JP S5671526A JP 14935579 A JP14935579 A JP 14935579A JP 14935579 A JP14935579 A JP 14935579A JP S5671526 A JPS5671526 A JP S5671526A
Authority
JP
Japan
Prior art keywords
dies
blank material
annular
die holes
annular member
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
JP14935579A
Other languages
Japanese (ja)
Inventor
Kazuo Imamura
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.)
DAIEI KOGYO CO Ltd
Daido Kogyo Co Ltd
Original Assignee
DAIEI KOGYO CO Ltd
Daido Kogyo 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 DAIEI KOGYO CO Ltd, Daido Kogyo Co Ltd filed Critical DAIEI KOGYO CO Ltd
Priority to JP14935579A priority Critical patent/JPS5671526A/en
Publication of JPS5671526A publication Critical patent/JPS5671526A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To inexpensively obtain annular members of intricate sectional shapes and small diameters by aligning both ends of a bar-like blank material to the two die holes of a predetermined shape formed mutually symmetrically, and approaching and moving the two dies alternately, thereby forming the blank material to an annular shape.
CONSTITUTION: Both ends of a blank material 13 consisting of a bar-like member are matched to the die holes 15 which are formed mutually symmetrically in two dies 12, 12', match the sectional shape of the blank material 13 and consist of arcs of a predetermined length and said two dies 12, 12' are moved so as to approach to each other to pass said blank material 13 into the die holes 12, 12', whereby the material is formed to an annular member 13b. Afterward, the dies are split, and the annular member 13b is removed from the dies. In this way, the annular members of large curvatures and small diameters which were difficult with conventional methods are produced inexpensively at low costs.
COPYRIGHT: (C)1981,JPO&Japio
JP14935579A 1979-11-16 1979-11-16 Production of annular member Pending JPS5671526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14935579A JPS5671526A (en) 1979-11-16 1979-11-16 Production of annular member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14935579A JPS5671526A (en) 1979-11-16 1979-11-16 Production of annular member

Publications (1)

Publication Number Publication Date
JPS5671526A true JPS5671526A (en) 1981-06-15

Family

ID=15473310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14935579A Pending JPS5671526A (en) 1979-11-16 1979-11-16 Production of annular member

Country Status (1)

Country Link
JP (1) JPS5671526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8905639B2 (en) 2012-01-17 2014-12-09 Daido Metal Company Ltd. Main bearing for crankshaft of internal combustion engine
CN110639988A (en) * 2019-08-02 2020-01-03 西安飞机工业（集团）有限责任公司 Roll bending forming die and method for large-curvature semicircular arc pipe orifice reinforcement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8905639B2 (en) 2012-01-17 2014-12-09 Daido Metal Company Ltd. Main bearing for crankshaft of internal combustion engine
CN110639988A (en) * 2019-08-02 2020-01-03 西安飞机工业（集团）有限责任公司 Roll bending forming die and method for large-curvature semicircular arc pipe orifice reinforcement

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