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JPS5636359A - Die forging method of crank shaft - Google Patents

Die forging method of crank shaft

Info

Publication number
JPS5636359A
JPS5636359A JP11046179A JP11046179A JPS5636359A JP S5636359 A JPS5636359 A JP S5636359A JP 11046179 A JP11046179 A JP 11046179A JP 11046179 A JP11046179 A JP 11046179A JP S5636359 A JPS5636359 A JP S5636359A
Authority
JP
Japan
Prior art keywords
molding
shafts
crank shaft
pin shafts
die
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
JP11046179A
Other languages
Japanese (ja)
Inventor
Minoru Kobayashi
Tatsuo Miyake
Tetsuo Kannonji
Tsuneo Ishihara
Takeshi Kodama
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP11046179A priority Critical patent/JPS5636359A/en
Publication of JPS5636359A publication Critical patent/JPS5636359A/en
Pending legal-status Critical Current

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  • Forging (AREA)

Abstract

PURPOSE: To die-forge a crank shaft with good molding efficiency and material yield with relatively small-sized equipment by making the direction of molding by forging into the direction where the respective centers of journal shafts and pin shafts are connected, at the time of molding a shaft-shaped blank material by dieforging with molding dies.
CONSTITUTION: A shaft-shaped blank material 1 such as billet or other is prepared as shown by, for example, alternate long and two short dashes lines, and is die- forged in the direction where the respective centers of journal shafts 2 and pin shafts 3 are connected, whereby a crank shaft consisting of the journal shafts 2 and the alternately offcentering pin shafts 3 on both outer sides thereof is forged. At this time, flashes 5 are produced on the outside circumference. According to this method, the respective pin shafts 3 are obtainable on one side of the blank material 1 and the other side thereof by bending of the same; therefore, the molding efficiency is good and the fatigue strength may be increased. In addition, the die life is long and the flashes 5 produced are relatively less, hence the yield is good.
COPYRIGHT: (C)1981,JPO&Japio
JP11046179A 1979-08-31 1979-08-31 Die forging method of crank shaft Pending JPS5636359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11046179A JPS5636359A (en) 1979-08-31 1979-08-31 Die forging method of crank shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11046179A JPS5636359A (en) 1979-08-31 1979-08-31 Die forging method of crank shaft

Publications (1)

Publication Number Publication Date
JPS5636359A true JPS5636359A (en) 1981-04-09

Family

ID=14536292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11046179A Pending JPS5636359A (en) 1979-08-31 1979-08-31 Die forging method of crank shaft

Country Status (1)

Country Link
JP (1) JPS5636359A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101823116A (en) * 2010-05-11 2010-09-08 林素伟 Forging process for engine crankshaft of excavator
CN109226624A (en) * 2018-08-29 2019-01-18 江阴南工锻造有限公司 A kind of eccentric shaft and its moulding process
CN110802195A (en) * 2019-10-15 2020-02-18 济南鑫伟锻造有限公司 Forging process of crankshaft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101823116A (en) * 2010-05-11 2010-09-08 林素伟 Forging process for engine crankshaft of excavator
CN109226624A (en) * 2018-08-29 2019-01-18 江阴南工锻造有限公司 A kind of eccentric shaft and its moulding process
CN110802195A (en) * 2019-10-15 2020-02-18 济南鑫伟锻造有限公司 Forging process of crankshaft

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