摘 要

板料沖壓是金屬塑性加工的一種基本方法。它用于生產各種板料零件，具有生產效率高、尺寸精度好、重量輕、成本低、并易于實現機械化和自動化等特點。在現代汽車、拖拉機、電器電機、電子、儀表、日用生活用品、航空航天以及國防工業(yè)等各個工業(yè)部門中均占有愈來愈重要的地位，沖壓加工已在國民經濟各部門得到廣泛的應用。
本次畢業(yè)設計以轎車翼子板內板為研究對象。根據給定的三維實體模型，對零件的幾何外形和結構進行分析以確定其成形過程中需要的成形方法。然后對轎車翼子板內板成形工藝和模具設計進行了研究，通過有限元數值模擬仿真軟件DYNAFORM，對“轎車翼子板內板”進行沖壓模擬分析，通過綜合分析和比較得到最佳的冷沖壓工藝方案。同時以沖壓工藝手冊等大量參考資料為依據，通過計算和模擬分析對成形方法的可行性進行驗證。在確定單工序之后，利用三維建模軟件UGNX畫出每一個工步的三維簡圖，從而合理的表述其工藝流程。最后，利用模具設計2D、3D 、CAD軟件，對模具關鍵部件進行三維造型，用于模具制造和模具繪圖。并且對其中2個關鍵工序（淺拉深成形和彎曲翻邊）進行模具設計，對其模具總裝進行計算機繪圖,并且拆繪其中的非標準零件，確定各零件的材料規(guī)格和技術要求。


關鍵詞：翼子板內板，數值模擬，工藝方案，工藝計算，模具設計








ABSTRACT

Sheet metal plastic processing is a basic method. It used for the production of various sheet metal parts with high production efficiency, accuracy good size, light weight, low cost, and easy mechanization and automation features. In modern automobiles, tractors, electrical appliances, electronics, instrumentation, daily living supplies, aerospace and defense industry, and other industrial sectors are all becoming more and more important position, Punching in various sectors of the national economy have been widely employed.
The part this paper desinged is the fender board of the vehicle. According to the three-dimensional solid model, the geometric shape and structure of the part was analysis to certain the forming method in the forming process of pars. The optimal process is obtained by finite element simulation software DYNAFORM. Then, based on the large amount of reference material, the validation of forming methods was desinged by calculation and analysis .In according with the characteristics of every process, the frequency and manner of composite process can be certained, after determining the single operation. Then, every step of three-dimensional diagram was painted with 3D modeling software UGNX, to express a reasonable representation of its process. Finally, using 2D mold design, 3D CAD software, the mold 3D modeling of the key components can be painted for mold and die manufacturing drawings. And of these two key processes Mold Design, Die assembly of its computer graphics. And demolition of painting the non-standard components, determine the components of material specifications and technical requirements.
Keyworks: the fender board of the vehicle, numerical simulation, process, process, the die design



目 錄

中文摘要 Ⅰ
ABSTRACT Ⅱ
1緒論 1
1.1 課題背景 1
1.2 國內外研究現狀和發(fā)展趨勢 2
1.3 課題研究意義及目的 3
1.4 研究的可行性 3
1.5 課題重點研究問題 4
2 成型工藝分析 5
2.1零件成形性分析 5
2.1.1結構及尺寸分析 5
2.1.2材料性能分析 5
2.2可成形性分析 6
2.2.1淺拉深成型分析 6
2.2.2翻邊彎曲分析 6
3工藝面的補充 8
3.1 模型展平 8
3.2工藝面補充 9
4 工藝設計與計算 14
4.1毛坯尺寸的確定 14
4.2各工序沖壓工藝力和設備選擇 14
4.2.1拉深成形力的計算及沖壓設備的選取 14
4.2.2沖裁力的計算及設備選取 15
4.2.3彎曲翻邊力的計算及設備選取 16
4.3工藝方案的選擇及確定 17
4.4沖壓工藝卡片 18
5 數值模擬的實現 19
6模具設計 21
6.1概述 21
6.2淺拉深成型模 21
6.2.1工作過程 21
6.2.2工作部分零件 22
6.2.3頂件零件 23
6.2.4導向零件及模座 23
6.3翻邊模具設計 23
6.3.1工作過程 24
6.4模具材料的選擇 24
6.4.1冷沖模材料的選擇原則 24
6.4.2模具的工作條件對冷沖模材料的要求 24
6.4.3冷沖模的材料類型 25
6.4.4冷沖模設計的材料選擇 26
7 結論 26
參 考 文 獻 27
致謝 28