- 學位論文
多層式軸肩摩擦攪拌機構之類型合成
Type Synthesis of Friction Stir Welding Mechanisms with Adgusable Pin
摘要
摩擦攪拌銲接技術是一種新式固態銲接製程，主要作動原理是將欲接合的工件對接並排後利用夾具將其固定，旋轉中的攪拌頭沿著接合線平移運動，藉著施壓攪拌頭可使攪拌頭在母材產生攪拌狀態，凸肩部同時產生摩擦並熱獲得熱塑流，可用以接合金屬材料。摩擦攪拌製程早期主要應用於航太零件與船舶板金構件的銲接，現已逐漸擴至民生工業與運輸工具的製程上。目前國內外相關研究主要是摩擦攪拌機構攪拌軸形狀與工件材料的晶相變化。由於鮮少見到有關於摩擦攪拌運動機構的拓樸構造研究，所以本研究目的在於系統化創新設計摩擦攪拌運動機構的新型拓樸構造。首先、本研究分析與歸納現有摩擦攪拌機構的類型與拓樸構造特性，接著根據此特性提出摩擦攪拌機構拓樸構造的設計限制與創新設計規範，再以具有七桿九接頭的現有多層式軸肩摩擦攪拌機構為研究基礎、進而利用創意機構設計方法設計出不同於原始構造之新構型，據此本研究設計成果可得11種類別的摩擦攪拌機構的運動鏈，71個新式摩擦攪拌機構。最後，本研究利用電腦動畫模擬其中10個新式摩擦攪拌機構各元件的運動狀態，所得結果驗證本研究之所提理論的可行性。
並列摘要
Friction Stir Welding (FSW) Technology is a new solid-state welding process. The main principles of FSW are described as two work pieces are docked side-by-side in order to be bound by using the fixture, the rotating profiled pin translates along the joint line, at the mean time the shoulder of the pin acted by a external force can make the local materials of the joint line to be under stir state with thermoplastic friction heat flow such as the work pieces could be jointed. Early days, FSW is mainly used in aerospace sheet metal parts and components ship welding. Now, FSW could be used in transport and livelihood industry. At present, the most researches of FSW investigated the spindle shape designs and crystal phases of work piece material; they seldom studied the topological structures of Friction Stir Welding Mechanisms (FSWM). Hence, the purpose of this work is to systematically creative design new topological structures of FSWM. First, we analysis and conclude the topological structures of existed FSWM. And, we provide the design constrains and criteria of the topological structures of existed FSWM. Furthermore, based on an existed (7,9) FSWM design, we used the creative design methodology of mechanical devices to generate new topological structures of FSWM. The design results are 11 kinds of kinematic chain and 71 new Friction Stir Welding Mechanisms (FSWM). Finally, we simulate the motion sate of 10 new FSWM among the 71 ones by using a CAD package, they can prove the proposed design constrains, criteria, and results are feasible.