There is relative slip between the meshing tooth of involute gears

cycloid gears

and arc gears. This slip causes a series of harmful results. In this paper

the research history of rolling contact gearing is reviewed briefly

the principle

realization as well as the transmission features of the pure rolling contact gearing are disussed in detail

the profile design and tooth design are presented

several simple and practical profiles are given. The proposed theory and scheme are verified using theoretical analysis

computer simulations and real gears.