臺灣博碩士論文加值系統

國內中小企業從事於關鍵性零組件之開發的廠商相當多，而鍛造加工在零組件之製造上是目前相當普遍採用之方法之一，但鍛造加工尤其是溫鍛加工製程所需之技術層次相當高，因此在加工之過程中常因製程設計不良而無法得到精密之半成品或是成品。本研究即有鑑於此而擬，將針對溫鍛加工之製程設計予以學理上分析，並以不同管徑之銅管材零組件為例，研發其加工製程，包括數值模擬之輸入數據之取得、加工溫度之預測與擬定、模具之設計等，藉由溫鍛製程分析計算出溫鍛品於加工所需之加工壓力，成形過程，溫度的影響，進而判斷各加工製程之合理性。期待能讓業者藉由此研究之成果應用，累積銅管材溫鍛之加工經驗，從以往之冷鍛加工或是熱鍛加工轉型至高技術層次之溫鍛加工，提升產品之附加價值，進而提升產業之競爭力。

There are many small and medium enterprises engaged in the development of important components. The most common method in manufacturing components is forging. One of the most difficult ways to manufacture components is warm forging. Because of the imperfection in manufacturing design, they can not obtain precise finished or semi-finished products in the process of manufacturing. This project is aim at improving this drawback to analyze the manufacturing design of warm forging. Developing its manufacturing procedures are including the acquirement of input and output data, the prediction and setting of temperature and the design of mold etc. by the different thicknesses of copper pipes. We can calculate how many pressures that be needed in the process of manufacturing warm forging products and the effect on temperatures in shaping process by the manufacturing analysis of warm forging, And then we can judge the rationality of every manufacturing procedures. Hoping for manufacturers can apply the result of research to accumulate the warm forging experiences of copper pipes manufacturing. No matter the cold forging or hot forging, they can be transferred to the higher level technique of warm forging. It can increase additional value of products and heighten the competition of manufacturing.

摘要..................................... I
ABSTRACT ................................ II
誌謝.....................................III
目錄.................................... IV
圖表索引................................. X
第一章 緒論..............................1
1.1前言..................................1
1.2 文獻回顧.............................2
1.2.1 鍛造成形加工介紹...................2
1.2.2 金屬成形分析常用的方法.............8
1.3 研究目的............................13
1.4 論文架構............................14
第二章 基本理論........................ 15
2.1 基本假設............................15
2.1.1 有限變形之應變與應變率...........15
2.2 有限變形之應力與應力率..............17
2.3 有限變形之update Lagrangian formulation .....19
2.4 材料之彈塑性構成關係式......................22
第三章 動態有限元素分析軟體..................... 27
3.1 LS-DYNA 簡介................................27
3.2 動態有限元素簡介.............................28
3.2.1 前處理器.................................30
3.2.2 主程式求解器..............................36
3.2.3 後處理器...................................37
第四章 數值分析與實驗製程規劃................... 38
4.1 材料參數...................................40
4.2 電腦數值模擬解析方法步驟....................44
4.2.1 鍛粗加工之數值模型........................45
4.2.2 鍛粗加工之數值模擬........................47
4.3 實驗設備....................................52
4.3.1 模具組合圖....................................53
4.3.2 實驗機構規劃圖................................63
4.4 實驗結果.................................69
第五章 結論............................... 70
5.1 結論...................................70
5.2 未來研究之展望.........................71
5.2 改善成品卡模問題之製程建議.............71
5.2.1 製程建議.............................73
參考文獻................................... 78
作者簡介....................................81

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