Counterformal contacts of full toroidal continuously variable transmission  

作　　者：ATTIANabilAbdulla QINDa-tong 

机构地区：[1]MechanicalDesignDepartment,FacultyofEngineering,El-Mataria,HelwanUniversity,P.O.Box11718,Cairo,Egypt [2]TheStateKeyLaboratoryofMechanicalTransmission,ChongqingUniversity,Chongqing400030,P.R.China

出　　处：《Journal of Chongqing University》2005年第1期1-5,共5页重庆大学学报（英文版）

基　　金：Funded by the Ford-NSFC Foundation of China (No.50122151).

摘　　要：The point and the line contacts of a toroidal continuously variable transmission (CVT) are studied. The contact shapes between the roller and input and output disks are formulated by using the classical Hertz contact theory. Based on the formulated equations, different system factors affecting the maximum Hertz stress in the elliptical and strip contacts of the full toroidal CVT are explored, which include the properties of the contacting material (Young’s modulus), operating condition (pushing load) and geometrical parameters (aspect cavity ratio, aspect roller ratio). The comparative results reveal the relations between the maximum Hertz stress and the speed ratio in the form of graphs. These graphs give useful information for designer to know the maximum Hertz stress during operation in such systems.The point and the line contacts of a toroidal continuously variable transmission (CVT) are studied. The contact shapes between the roller and input and output disks are formulated by using the classical Hertz contact theory. Based on the formulated equations, different system factors affecting the maximum Hertz stress in the elliptical and strip contacts of the full toroidal CVT are explored, which include the properties of the contacting material (Young’s modulus), operating condition (pushing load) and geometrical parameters (aspect cavity ratio, aspect roller ratio). The comparative results reveal the relations between the maximum Hertz stress and the speed ratio in the form of graphs. These graphs give useful information for designer to know the maximum Hertz stress during operation in such systems.

关 键 词：continuously variable transmission (CVT) full toroidal elliptical contact strip contact Hertz stress operating FACTORS 

分 类 号：TH132[机械工程—机械制造及自动化] TH123