Static Balancing Design for Foldable Linkages

• Main Authors: Ping-Ju Chiang, 江秉儒
• Other Authors: Yu-Hsun Chen
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/8x44v2

碩士 === 國立臺灣科技大學 === 機械工程系 === 107 === This study refers to the foldable mechanism mentioned in the previous literature and patents and observes the elements that make up the folding mechanism. According to the design requirements, the angle between the rod and the output rod is restrained, and then a set of new folding mechanism design is proposed by combining the folding mechanism elements. Apply this design to the standard ping-pong table, using the size limit condition to limit the length of the link, and finally use MATLAB to get the rod size. Then introduce the concept of static balancing. Static balancing can usually be divided into counterweight method, spring method, and other energy storage components. In view of the fact that this study is a foldable mechanism, the overall volume of the mechanism is one of the design considerations. Due to the use of the counterweight method, the counterweight will increase the size of the mechanism. Therefore, the spring method will be used in this study, the spring is installed between the connecting rods, does not affect the overall size of the mechanism. Because the spring is limited by physical properties, this study discusses and analyzes the ideal and approximate static balancing. The zero-free length spring is used in the ideal static balancing, and the elastic coefficient of the spring is obtained by MATLAB operation; approximate static balancing part, using practical spring, there is a limit to the amount of stretching. The design regards this physical property as consideration. For the ideal and approximate static balancing, 3D CAD is drawn in Creo, then imported into Adams, and the mechanism simulation is performed. The gravity potential energy and the elastic potential energy curve are drawn. At the same time, using MATLAB to compute the gravity potential energy and elastic potential energy curves. Finally, the results of Adams and MATLAB are mutually verified.