【正文】 ct. The cross shaft is automobile chassis of a very important force transmission parts, products of high quality requirements, plex , DEFORM3D as a platform, and has done some research on mould design and FEM simulation, on the base of fe hot process which is widely used in local plant. First, using UG or Pro/E threedimensional modeling software for 3D modeling of the cross finite element simulation software DEFORM3D is used to simulate the forming process of the cross shaft. And analysis the stress distribution and the metal loadtrip curve. According to the result of the simulation, the problem in the Prefing has been analysed with some instructive suggestions for die designing put forward. Guidance is given from the mathematical model, then the optimized parameters, design of mould cavity and reasonable. A threedimensional model of cross shaft using a solid modeling function of UG. Key Words: cross shaft； numerical simulation； Prefing process； finite element method； forming process 安徽工程大學畢業(yè)設計（論文） III 目 錄 摘 要 ................................................................................................................................. I ABSTRACT ......................................................................................................................II 引 言 ............................................................................................................................ 1 第 1 章 緒 論 .............................................................................................................. 2 研究現(xiàn)狀和發(fā)展趨勢 ............................................................................... 2 研究意義（價值）及主要內(nèi)容 ............................................................... 3 第 2 章 設計研究方案 ............................................................................................... 4 對課題的認識 ........................................................................................... 4 課題的研究方法 ....................................................................................... 5 熱模鍛成形工藝 ....................................................................................... 6 模鍛的特點 ......................................................................................... 6 模鍛的分類 ......................................................................................... 6 開式模鍛工藝 ..................................................................................... 6 影響金屬成形的因素 ............................................................................... 7 UG 簡介 ........................................................................................................ 8 UG 產(chǎn)品概述 ....................................................................................... 8 UG 主要技術特點 ............................................................................... 9 本課題有關 UG 的運用 ..................................................................... 9 DEFORM3D簡介 ..................................................................................... 10 DEFORM的特 點 .............................................................................. 10 DEFORM模型的建立 ...................................................................... 10 第 3 章 十字軸模具設計 ......................................................................................... 12 十字軸鍛件幾何尺寸分析 ..................................................................... 12 終鍛模的設計 ......................................................................................... 14 分模面的制定 ................................................................................... 14 模塊的結構 ....................................................................................... 15 飛邊的選用 ....................................................................................... 15 鎖扣設計 ........................................................................................... 15 坯料體積計算 ................................................................................... 17 預鍛模的設計 ......................................................................................... 18 第 4 章 十字軸模具總裝配圖 ................................................................................ 22 模架的選取 ............................................................................................. 22 熱模鍛壓力機的選用 ............................................................................. 27 模具總裝配圖 ......................................................................................... 28 第 5 章 結論與展望 ................................................................................................. 30 致 謝 .......................................................................................................................... 31 主要參考文獻 ............................................................................................................. 32 左渭：十字軸鍛造成形工藝研究及模具設計 IV 附 錄 ........................................................................................................................ 33 插圖清單 圖 21 常見十字軸零件圖和模鍛件圖 ........................................................................ 4 圖 22 十字軸零件圖 .................................................................................................... 5 圖 23 十字軸 冷鍛件圖 ............................................................................................... 5 圖 31 十字軸冷鍛件圖尺寸 ..................................................................................... 12 圖 32 十字軸熱鍛件圖尺寸 ..................................................................................... 14 圖 33 十字軸熱鍛件三維圖 ....................................................