| Counterformal contacts of full toroidal continuously variable transmission |
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| 作者姓名： | ATTIA Nabil Abdulla |
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| 作者单位： | The State |
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| 摘 要： | 1 Introduction A traction drive is a device, which transmits powerby means of traction contacts among multiple rotatingbodies. Variable ratio power transmission is achievedby varying the system geometry so that the points ofaction of the traction force are varied. When this isdone in a continuous manner, it results in a conti-nuously variable traction drive varaitor. There areprimarily two types of traction drives that are ofinterest in the automotive area, viz., half toroidaltraction drive an…
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| 关 键 词： | 变速传动 超环面 牵引传动机械 滚筒 计算方法 |
Counterformal contacts of full toroidal continuously variable transmission |
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| ATTIA Nabil Abdulla.Counterformal contacts of full toroidal continuously variable transmission[J].Journal of Chongqing University,2005,4(1):1-5. |
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| Authors: | ATTIA Nabil Abdull Qin Da-tong |
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| Abstract: | 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. |
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| Keywords: | continuously variable transmission (CVT) full toroidal elliptical contact strip contact Hertz stress operating factors transmission variable continuously information designer know during operation systems results speed graphs aspect cavity geometrical parameters pushing load operating condition modulus |
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