JPS55107112A - Structure of engine crankshaft - Google Patents

Structure of engine crankshaft

Info

Publication number
JPS55107112A
JPS55107112A JP1311379A JP1311379A JPS55107112A JP S55107112 A JPS55107112 A JP S55107112A JP 1311379 A JP1311379 A JP 1311379A JP 1311379 A JP1311379 A JP 1311379A JP S55107112 A JPS55107112 A JP S55107112A
Authority
JP
Japan
Prior art keywords
core
pipes
pipe
casting
spaces
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
JP1311379A
Other languages
Japanese (ja)
Other versions
JPS6357144B2 (en
Inventor
Rihei Nagano
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.)
Kubota Corp
Original Assignee
Kubota 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 Kubota Corp filed Critical Kubota Corp
Priority to JP1311379A priority Critical patent/JPS55107112A/en
Publication of JPS55107112A publication Critical patent/JPS55107112A/en
Publication of JPS6357144B2 publication Critical patent/JPS6357144B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PURPOSE: To improve producibility and lubricating property by a method wherein plural casting cores are subjected to internal chill in such condition that they each enclose a closed space, and adjacent cores are coupled with each other by support pipes.
CONSTITUTION: A cocoon-shaped metallic casting core 4 with rounded corner portions is formed, a metallic support pipe 6 having small holes c is welded to the core 4 at the longitudinally middle portion of the latter in such a manner that the pipe 6 intersects the longitudinal core axis P2, and rotation preventing members 11 are fitted to the end portions of the pipe 6, to form a core body C in which a closed core space B is communicated with the pipe 6 by the small holes c. Such core bodies C are so located that their axes P2 accord with the axis of a journal portion 1 or of a crank pin portion 3, the pipes 6 are held in parallel with or perpendicular to the longitudinal direction of arms 2, the spaces B of the adjacent cores 4 are communicated with each other by pipes 12, and casting is conducted around the pipes 12 and core bodies C. Thus, there is obtained free circulation of lubricating oil between the spaces B, and differential wear is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP1311379A 1979-02-06 1979-02-06 Structure of engine crankshaft Granted JPS55107112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1311379A JPS55107112A (en) 1979-02-06 1979-02-06 Structure of engine crankshaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1311379A JPS55107112A (en) 1979-02-06 1979-02-06 Structure of engine crankshaft

Publications (2)

Publication Number Publication Date
JPS55107112A true JPS55107112A (en) 1980-08-16
JPS6357144B2 JPS6357144B2 (en) 1988-11-10

Family

ID=11824092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1311379A Granted JPS55107112A (en) 1979-02-06 1979-02-06 Structure of engine crankshaft

Country Status (1)

Country Link
JP (1) JPS55107112A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534241A (en) * 1981-10-08 1985-08-13 Ab Volvo Crankshaft for combustion engines
JPH0241758A (en) * 1988-08-01 1990-02-09 Hiroshima Alum Kogyo Kk Method of molding metallic molding having recess

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4534241A (en) * 1981-10-08 1985-08-13 Ab Volvo Crankshaft for combustion engines
JPH0241758A (en) * 1988-08-01 1990-02-09 Hiroshima Alum Kogyo Kk Method of molding metallic molding having recess

Also Published As

Publication number Publication date
JPS6357144B2 (en) 1988-11-10

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