ASSEMBLED CAMSHAFT

• Main Author: KIKUOKA SHINICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 10.09.2015
• Subjects: BLASTING; CRANKCASE VENTILATING; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide an assembled camshaft which enables easy processing while limiting the supply amount of a lubrication oil.SOLUTION: A spiral groove 12 is formed on an outer peripheral surface of a hollow shaft 10 in which an oil passage 11 is formed. The groove 12 communicates with the oil passage 11 through a communication hole 14. A cam piece 20 is shrink fitted to the shaft 10. The cam piece 20 covers the communication hole 14 of the shaft 10. Thus, a lubrication oil flowed from the oil passage 11 to the groove 12 through the communication hole 14 is discharged from a portion of the groove 12 which is exposed from the cam piece 20. The structure limits the discharge amount of the lubrication oil. 【課題】潤滑油の供給量を制限しつつも加工が容易な組み立てカムシャフトを提供する。【解決手段】油路１１が形成された中空のシャフト１０の外周面には、螺旋状の溝１２が形成されており、溝１２は、連通孔１４を介して油路１１に連通される。シャフト１０には、カムピース２０が焼き嵌めされる。カムピース２０は、シャフト１０のうち連通孔１４を覆う。このため、油路１１から連通孔１４を介して溝１２に流出する潤滑油は、溝１２のうちカムピース２０から露出した部分から放出される。これにより、潤滑油の放出量を制限することができる。【選択図】図２