On the Surface Design, Tooth Contact Analysis, and Optimum Design of Cycloidal Drives with Modified Tooth Profiles

• Main Authors: Chorng-Shiann Huang, 黃重憲
• Other Authors: Shen-Tarng Chiou
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/03317185194236448182

碩士 === 國立成功大學 === 機械工程學系碩博士班 === 94 === 　　Cycloidal drives are used in many machinery. They have some advantages, such as larger range of speed ratio, more compact, lighter weight, higher capacity, and higher efficiency, etc. The main purpose of this study is to investigate the characteristics of the drives with modified tooth profiles and to determine the optimum amounts of tooth modifications such that they have better characteristics. 　　Based on the theory of conjugate surfaces, a general model for the profile design of the cycloidal wheel without or with various tooth modifications is developed. Then, the model for the tooth contact analysis is evolved. Consequently, subjected to the required lubricant thickness and the tolerance for the assembly and manufacture errors, an optimization technique is applied to determine the amounts of tooth modifications such that the instantaneous velocity ratio error and the transmission error can be minimized. Examples are included to verify the correctness of the models developed and to demonstrate the characteristics of the drives. 　　The models developed should be an aid for designing the cycloidal drives with better performance, and they are also useful for the development of other gear mechanisms.