Research and Development of Planetary Gear Reducers
| Autor: | Tzu-Hsia Chen, 陳子夏 |
|---|---|
| Rok vydání: | 2013 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 101 Due to the reason of compact size, light weight, strong strength, high reduction ratio, and multi-degrees of freedom, planetary gear trains are commonly used in various transmissions. The works in this thesis including kinematic design, efficiency analysis, engineering design, and prototype manufacture of planetary gear trains, the complete process can call as the research and development of planetary gear reducers. By referring to the train value equation and latent power theorem, the reduction-ratio and meshing-efficiency equations of planetary gear trains are derived. Based on the reduction-ratio and meshing-efficiency equations, the kinematic design and meshing-efficiency analysis of corresponding planetary gear trains are accomplished. Four prototypes of planetary gear reducers are manufactured. The four prototypes including: (a)2K type planetary gear reducer with reduction ratio equal to four (Rr=4), (b)Two-stage planetary gear reducer with Rr=19.8, (c)3K type planetary gear reducers with Rr=156, and (d)3K type planetary gear reducers with Rr=50, and Rr=100. The four prototypes are installed to the test platform to carry out the efficiency test. We conclude: 1. For one- and two-stage planetary gear reducers, the mechanical efficiency decreases when input rotating speed increases. 2. For one- and two-stage planetary gear reducers, the mechanical efficiency increases when output torque increases. 3. Due to the reason of power circulation, the meshing efficiencies of 3K and 2K-2H type planetary gear reducers are not good. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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