Fork Structure Improve and Finite Element analysis of TFT-LCD Glass Handling Robot-fork

• Main Authors: Shun-Cheng Hsu, 徐順成
• Other Authors: 洪永銘
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/3rpy7h

碩士 === 國立臺北科技大學 === 製造科技研究所 === 98 === Nowadays, there is a tendency that the TFT-LCD glass base plate size becomes bigger and bigger. In the big generation, under the compression of production line, the equipment for the light-sized production line must be improved to produce the thin foundation plate. Due to the weight, the distortion scope of the thin glass plate is enlarged. This will raise the difficulties for the deliver of this thin plate one possible way to solve this problem is to reduce the bending of mechanical arm fork and increase more safety mooing space during the process of takes and puts of base plates. This research carries on mechanic analysis to the fork of mechanical arm and measure the downward deflection (not over 3.6 mm) and then by using finite element analysis to predict the result and find their difference. In view of the fork structure shortcoming, optimization analysis is used. Hollow, U shaped and salient structures are analyzed thru their displacement, stress and frequency. The analysis shows that the hollow fork structure has the smallest displacement and the optimum condition. It is suitable to do the optimization improvement reference design based on the hollow fork structure. Four planes are carried on as follows: First designates the varying parameter under the same load and find the most suitable section size. Second, under the limiting condition, find the best position for the sensor and digs a hole. Third, in the fork root space, supplement of reinforcement plate to reduce the sagging amount. Fourth, increase the metal reinforcement on the fork spatial core to reduce the bending. By way of the above optimization, the distortion of the arm fork cam be reduced to nearly 73%.