Developing Of The Cam Life Predicted Software

In this paper, based on the wear theory, the wear mechanism and the main disable forms are discussed. The more appropriate Archard wear calculation model is selected. The cam's wear model in view of the influence of surface topography is established. Then the digital simulation model is obtained. For developing the software, the contact pressure between the cam and the follower can be gained by traditional Hertz theory formula . The elastohydrodynamic lubrication oil-film thickness on cam's surface can be calculated by the universal film thickness formula of EDH line contact. Then we can estimate the lubrication state between the friction faces. With the old large numbers of testing numbers the wear parameter K of every point on the steady work's cam can be decided. Finally, the life predicted software with the MATLAB is developed. This software includes the parameterized calculation module, film thickness calculation model and wear state model.In this research, the scientific efficient computer simulation technology replaces the traditional taking-time and arduous experimental method, which provides a beneficial thought for researching the wear design of the contacted machine in the boundary lubrication and computer simulative technology used in the part life design. The developed cam life predicted software can watch and control the cam wear state, forecast it's life and have the rudiment of the similar machine life predicted software. So the research has a good application prospect and practicality value.