Lubrication Analyses of Cam and Flat-Faced Follower

Lubricants

OdayI. Abdullah¹  Adolfo Senatore²  HazimU. Jamali³  Amjad Al-Hamood³  Josef Schlattmann⁴ 

[1] Department of Energy Engineering, College of Engineering, University of Baghdad, 47024 Baghdad, Iraq;Department of Industrial Engineering, University of Salerno, I-84084 Fisciano, Italy;Mechanical Engineering Department, College of Engineering, University of Kerbala, 56001Kerbala, Iraq;System Technologies and Engineering Design Methodology, Hamburg University of Technology, 21073 Hamburg, Germany;

关键词: elastohydrodynamic;    point contact;    cam modification;   

DOI  :  10.3390/lubricants7040031

来源: DOAJ

【 摘 要 】

The principal factors that affect the characteristics of contact problem between cam and follower vary enormously during the operating cycle of this mechanism. This includes radius of curvature, surface velocities and applied load. It has been found over the last decades that the mechanism operates under an extremely thin film of lubricant. Any practical improvement in the level of film thickness that separates the contacted surfaces represents an essential step towards a satisfactory design of the system. In this paper a detailed numerical study is presented for the cam and follower (flat-faced) lubrication including the effect of introducing an axial modification (parabolic shape) of the cam depth on the levels of film thickness and pressure distribution. This is achieved based on a point contact model for a cam and flat-faced follower system. The results reveal that the cam form of modification has considerable consequences on the level of predicted film thickness and pressure distribution as well as surface deformation.

【 授权许可】

Unknown