Design of A High Precision Linkages Type Gate Positioning Mechanism

• Main Authors: Tzu-Wei-Chung, 鍾子威
• Other Authors: Hong-Tzer-Yan
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/53574526020645688620

碩士 === 建國科技大學 === 機械工程系暨製造科技研究所 === 99 === The use of the motor of speed reducer for forward and reverse control and the movement of the rocker arm by the commercially available automatic gates tend to lead to positioning errors, leaving the rocker arm unable to accurately position. In the study, using the motor of speed reducer as the main power source, a six bar linkage is created through the series connection of a unidirectional constant velocity double crankmechanism and a crank rocker mechanism. A performance curve indicating there is almost no motion when the rocker arm moves between two dead-center positions is thus obtained for the research and development of a positioning mechanism of high-precision, fast actuation speed, low vibration, easy to manufacture and low cost. The study develops a real working model, conducts performancetesting and confirms the practical benefits of the positioning mechanism.