轿车翼子板内板成形工艺分析及模具设计（本科毕业论文设计）.doc

摘 要

板料冲压是金属塑性加工的一种基本方法。它用于生产各种板料零件，具有生产效率高、尺寸精度好、重量轻、成本低、并易于实现机械化和自动化等特点。在现代汽车、拖拉机、电器电机、电子、仪表、日用生活用品、航空航天以及国防工业等各个工业部门中均占有愈来愈重要的地位，冲压加工已在国民经济各部门得到广泛的应用。
本次毕业设计以轿车翼子板内板为研究对象。根据给定的三维实体模型，对零件的几何外形和结构进行分析以确定其成形过程中需要的成形方法。然后对轿车翼子板内板成形工艺和模具设计进行了研究，通过有限元数值模拟仿真软件DYNAFORM，对“轿车翼子板内板”进行冲压模拟分析，通过综合分析和比较得到最佳的冷冲压工艺方案。同时以冲压工艺手册等大量参考资料为依据，通过计算和模拟分析对成形方法的可行性进行验证。在确定单工序之后，利用三维建模软件UGNX画出每一个工步的三维简图，从而合理的表述其工艺流程。最后，利用模具设计2D、3D 、CAD软件，对模具关键部件进行三维造型，用于模具制造和模具绘图。并且对其中2个关键工序（浅拉深成形和弯曲翻边）进行模具设计，对其模具总装进行计算机绘图,并且拆绘其中的非标准零件，确定各零件的材料规格和技术要求。


关键词：翼子板内板，数值模拟，工艺方案，工艺计算，模具设计








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 录

中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 1
1.1 课题背景 1
1.2 国内外研究现状和发展趋势 2
1.3 课题研究意义及目的 3
1.4 研究的可行性 3
1.5 课题重点研究问题 4
2 成型工艺分析 5
2.1零件成形性分析 5
2.1.1结构及尺寸分析 5
2.1.2材料性能分析 5
2.2可成形性分析 6
2.2.1浅拉深成型分析 6
2.2.2翻边弯曲分析 6
3工艺面的补充 8
3.1 模型展平 8
3.2工艺面补充 9
4 工艺设计与计算 14
4.1毛坯尺寸的确定 14
4.2各工序冲压工艺力和设备选择 14
4.2.1拉深成形力的计算及冲压设备的选取 14
4.2.2冲裁力的计算及设备选取 15
4.2.3弯曲翻边力的计算及设备选取 16
4.3工艺方案的选择及确定 17
4.4冲压工艺卡片 18
5 数值模拟的实现 19
6模具设计 21
6.1概述 21
6.2浅拉深成型模 21
6.2.1工作过程 21
6.2.2工作部分零件 22
6.2.3顶件零件 23
6.2.4导向零件及模座 23
6.3翻边模具设计 23
6.3.1工作过程 24
6.4模具材料的选择 24
6.4.1冷冲模材料的选择原则 24
6.4.2模具的工作条件对冷冲模材料的要求 24
6.4.3冷冲模的材料类型 25
6.4.4冷冲模设计的材料选择 26
7 结论 26
参 考 文 献 27
致谢 28